From 954e16bc2d8e8776c45c424f76b485744bd7c393 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:08:35 +0100
Subject: [PATCH 01/40] docs: design

---
 README.md | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index cbae739405..4e6196a506 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,22 @@
-# kotlin-lotto
\ No newline at end of file
+# kotlin-lotto
+
+## Process
+
+1. Input purchase
+2. Calculate purchased amount of tickets
+3. Generate purchased tickets
+4. Input winning numbers
+5. Calculate matches
+6. Calculate return rate
+7. Display result
+
+## MVC
+### Model
+1. Ticket
+2. Purchased Tickets
+3. Lotto Result
+### View
+1. Input View
+2. Result View
+### Controller
+1. Lotto Controller

From 580df846239a4c1c09e16aee0a6e279c75af4190 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:36:15 +0100
Subject: [PATCH 02/40] docs: test cases for TicketModel

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index 4e6196a506..18b9f5bc78 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@
 7. Display result
 
 ## MVC
+
 ### Model
 1. Ticket
 2. Purchased Tickets
@@ -20,3 +21,9 @@
 2. Result View
 ### Controller
 1. Lotto Controller
+
+## TDD 
+
+### Ticket
+- [ ] ticket should contain 6 numbers
+- [ ] should fail if numbers less or more then 6

From ae0801415b1d229d602d29bb31bd1000f11b4b39 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:40:42 +0100
Subject: [PATCH 03/40] test: case 1.1 - failing test

---
 README.md                                           |  6 +++---
 src/main/kotlin/lotto/model/TicketModel.kt          |  5 +++++
 src/test/kotlin/lotto/model/TicketModelModelTest.kt | 13 +++++++++++++
 3 files changed, 21 insertions(+), 3 deletions(-)
 create mode 100644 src/main/kotlin/lotto/model/TicketModel.kt
 create mode 100644 src/test/kotlin/lotto/model/TicketModelModelTest.kt

diff --git a/README.md b/README.md
index 18b9f5bc78..1bed757bef 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,6 @@
 
 ## TDD 
 
-### Ticket
-- [ ] ticket should contain 6 numbers
-- [ ] should fail if numbers less or more then 6
+### 1. Ticket
+- [ ] 1.1. ticket should contain 6 numbers
+- [ ] 1.2. should fail if numbers less or more then 6
diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
new file mode 100644
index 0000000000..00bdc1d8de
--- /dev/null
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -0,0 +1,5 @@
+package lotto.model
+
+class TicketModel() {
+
+}
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
new file mode 100644
index 0000000000..f53b2cb710
--- /dev/null
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -0,0 +1,13 @@
+package lotto.model
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+
+class TicketModelModelTest {
+
+    @Test
+    fun `ticket should contain 6 numbers`(){
+        val ticket = TicketModel()
+        assertThat(ticket.numbers).isEqualTo(listOf(1,2,3,4,5,6))
+    }
+}
\ No newline at end of file

From d4b1f6554b5fd81e90910d56cb8d8a5eacfa140a Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:41:19 +0100
Subject: [PATCH 04/40] test: case 1.1 - passing test

---
 src/main/kotlin/lotto/model/TicketModel.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index 00bdc1d8de..8aa8fcae6a 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -1,5 +1,5 @@
 package lotto.model
 
 class TicketModel() {
-
+    val numbers: List<Int> = listOf(1,2,3,4,5,6)
 }
\ No newline at end of file

From 5ddd2f72e7dde989996e5dabbe93d225cf6d077f Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:43:28 +0100
Subject: [PATCH 05/40] test: case 1.1 - refactor

---
 src/main/kotlin/lotto/model/TicketModel.kt          | 3 +--
 src/test/kotlin/lotto/model/TicketModelModelTest.kt | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index 8aa8fcae6a..295ff0840c 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -1,5 +1,4 @@
 package lotto.model
 
-class TicketModel() {
-    val numbers: List<Int> = listOf(1,2,3,4,5,6)
+class TicketModel(val numbers : List<Int>) {
 }
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index f53b2cb710..c54cdadc4a 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -7,7 +7,7 @@ class TicketModelModelTest {
 
     @Test
     fun `ticket should contain 6 numbers`(){
-        val ticket = TicketModel()
+        val ticket = TicketModel(listOf(1,2,3,4,5,6))
         assertThat(ticket.numbers).isEqualTo(listOf(1,2,3,4,5,6))
     }
 }
\ No newline at end of file

From e66a204ee45d14f6f401c9ec1d4f1630fb11a083 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:44:54 +0100
Subject: [PATCH 06/40] test: case 1.1 - new test

---
 src/test/kotlin/lotto/model/TicketModelModelTest.kt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index c54cdadc4a..74d8137644 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -10,4 +10,10 @@ class TicketModelModelTest {
         val ticket = TicketModel(listOf(1,2,3,4,5,6))
         assertThat(ticket.numbers).isEqualTo(listOf(1,2,3,4,5,6))
     }
+
+    @Test
+    fun `ticket should contain another 6 numbers`(){
+        val ticket = TicketModel(listOf(6,5,4,3,2,1))
+        assertThat(ticket.numbers).isEqualTo(listOf(6,5,4,3,2,1))
+    }
 }
\ No newline at end of file

From a2a7b8ecee8b7eb39c45b92eee19247b6c258c4e Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:51:46 +0100
Subject: [PATCH 07/40] test: case 1.1 - refactor test

---
 .../lotto/model/TicketModelModelTest.kt       | 22 ++++++++++++-------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index 74d8137644..edbaf745fe 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -2,18 +2,24 @@ package lotto.model
 
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.MethodSource
 
 class TicketModelModelTest {
 
-    @Test
-    fun `ticket should contain 6 numbers`(){
-        val ticket = TicketModel(listOf(1,2,3,4,5,6))
-        assertThat(ticket.numbers).isEqualTo(listOf(1,2,3,4,5,6))
+    @ParameterizedTest
+    @MethodSource("provideNumbers")
+    fun `ticket should contain 6 numbers`(numbers: List<Int>) {
+        val ticket = TicketModel(numbers)
+        assertThat(ticket.numbers).isEqualTo(numbers)
     }
 
-    @Test
-    fun `ticket should contain another 6 numbers`(){
-        val ticket = TicketModel(listOf(6,5,4,3,2,1))
-        assertThat(ticket.numbers).isEqualTo(listOf(6,5,4,3,2,1))
+    companion object {
+        @JvmStatic
+        fun provideNumbers(): List<List<Int>> = listOf(
+            listOf(1, 2, 3, 4, 5, 6),
+            listOf(6, 5, 4, 3, 2, 1),
+            listOf(8, 9, 10, 11, 12, 13)
+        )
     }
 }
\ No newline at end of file

From 9dcb672c61e06d725a100c444436f012c110f1e2 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:52:09 +0100
Subject: [PATCH 08/40] test: case 1.1 - refactor test

---
 src/test/kotlin/lotto/model/TicketModelModelTest.kt | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index edbaf745fe..80fdfa9c4c 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -1,7 +1,6 @@
 package lotto.model
 
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.jupiter.api.Test
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.MethodSource
 

From e107701c7fdaef5cb55cafadaf59882c88d0a182 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 20:54:29 +0100
Subject: [PATCH 09/40] test: case 1.2 - failing test

---
 src/test/kotlin/lotto/model/TicketModelModelTest.kt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index 80fdfa9c4c..fbf237ec4c 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -1,6 +1,8 @@
 package lotto.model
 
 import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.MethodSource
 
@@ -13,6 +15,11 @@ class TicketModelModelTest {
         assertThat(ticket.numbers).isEqualTo(numbers)
     }
 
+    @Test
+    fun `should fail if numbers less or more then 6`() {
+        assertThrows<IllegalArgumentException> { TicketModel(listOf(1, 2, 3)) }
+    }
+
     companion object {
         @JvmStatic
         fun provideNumbers(): List<List<Int>> = listOf(

From 6ec260401e05fade7987b994e4b54c485bec881a Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 21:54:21 +0100
Subject: [PATCH 10/40] test: case 1.2 - passing test

---
 src/main/kotlin/lotto/model/TicketModel.kt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index 295ff0840c..7c026b776e 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -1,4 +1,7 @@
 package lotto.model
 
 class TicketModel(val numbers : List<Int>) {
+    init {
+        require(numbers.size == 6)
+    }
 }
\ No newline at end of file

From 7b41b8cd643ca6f695bcc73acd18786f10471d0c Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 21:56:04 +0100
Subject: [PATCH 11/40] test: case 1.2 - refactor

---
 src/main/kotlin/lotto/model/TicketModel.kt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index 7c026b776e..a102254a0c 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -1,7 +1,11 @@
 package lotto.model
 
+const val TICKET_NUMBER_LENGTH = 6
+
 class TicketModel(val numbers : List<Int>) {
     init {
-        require(numbers.size == 6)
+        require(numbers.size == TICKET_NUMBER_LENGTH) {
+            "Ticket should contain $TICKET_NUMBER_LENGTH numbers"
+        }
     }
 }
\ No newline at end of file

From bfaff9b2338f556af6c7d481f4d22fd09c5bf3cf Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Thu, 27 Mar 2025 22:01:50 +0100
Subject: [PATCH 12/40] test: case 1.2 - refactor test

---
 .../kotlin/lotto/model/TicketModelModelTest.kt | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index fbf237ec4c..9d73d9b589 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -9,23 +9,31 @@ import org.junit.jupiter.params.provider.MethodSource
 class TicketModelModelTest {
 
     @ParameterizedTest
-    @MethodSource("provideNumbers")
+    @MethodSource("validTickets")
     fun `ticket should contain 6 numbers`(numbers: List<Int>) {
         val ticket = TicketModel(numbers)
         assertThat(ticket.numbers).isEqualTo(numbers)
     }
 
-    @Test
-    fun `should fail if numbers less or more then 6`() {
-        assertThrows<IllegalArgumentException> { TicketModel(listOf(1, 2, 3)) }
+    @ParameterizedTest
+    @MethodSource("invalidTickets")
+    fun `should fail if numbers less or more then 6`(numbers: List<Int>) {
+        assertThrows<IllegalArgumentException> { TicketModel(numbers) }
     }
 
     companion object {
         @JvmStatic
-        fun provideNumbers(): List<List<Int>> = listOf(
+        fun validTickets(): List<List<Int>> = listOf(
             listOf(1, 2, 3, 4, 5, 6),
             listOf(6, 5, 4, 3, 2, 1),
             listOf(8, 9, 10, 11, 12, 13)
         )
+        @JvmStatic
+        fun invalidTickets(): List<List<Int>> = listOf(
+            listOf(1, 2, 3),
+            listOf(3, 2, 1),
+            listOf(1, 2, 3, 4, 5, 6, 7),
+            listOf(7, 6, 5, 4, 3, 2, 1),
+        )
     }
 }
\ No newline at end of file

From a13697a3e6bd2117fb559d09f570a479cf40439c Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Fri, 28 Mar 2025 21:15:40 +0100
Subject: [PATCH 13/40] dacs: test cases for PurchasedTickets

---
 README.md | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 1bed757bef..bd67ea3ebd 100644
--- a/README.md
+++ b/README.md
@@ -25,5 +25,10 @@
 ## TDD 
 
 ### 1. Ticket
-- [ ] 1.1. ticket should contain 6 numbers
-- [ ] 1.2. should fail if numbers less or more then 6
+- [x] 1.1. ticket should contain 6 numbers
+- [x] 1.2. should fail if numbers less or more then 6
+
+### 2. Purchased Ticket
+- [ ] 2.1. should generate correct number of tickets based on purchased amount
+- [ ] 2.2. should return empty list if purchased amount less that ticket price
+- [ ] 2.3. should fail if purchased amount is negative

From 1c4447cb26e87c95db978bf046b76f784c4d6cfd Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Fri, 28 Mar 2025 22:07:26 +0100
Subject: [PATCH 14/40] test: case 2.1. passing test

---
 README.md                                           |  7 ++++---
 src/main/kotlin/lotto/model/PurchasedTickets.kt     |  6 ++++++
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 13 +++++++++++++
 src/test/kotlin/lotto/model/TicketModelModelTest.kt |  1 -
 4 files changed, 23 insertions(+), 4 deletions(-)
 create mode 100644 src/main/kotlin/lotto/model/PurchasedTickets.kt
 create mode 100644 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt

diff --git a/README.md b/README.md
index bd67ea3ebd..d84bb1fb1d 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@
 - [x] 1.2. should fail if numbers less or more then 6
 
 ### 2. Purchased Ticket
-- [ ] 2.1. should generate correct number of tickets based on purchased amount
-- [ ] 2.2. should return empty list if purchased amount less that ticket price
-- [ ] 2.3. should fail if purchased amount is negative
+- [ ] 2.1. should calculate correct number of tickets based on purchased amount  
+- [ ] 2.2. should generate tickets based on purchased amount
+- [ ] 2.3. should return empty list if purchased amount less that ticket price
+- [ ] 2.4. should fail if purchased amount is negative
diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
new file mode 100644
index 0000000000..4116b2959b
--- /dev/null
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -0,0 +1,6 @@
+package lotto.model
+
+class PurchasedTickets(val amount: Int) {
+
+    val ticketCount = 5
+}
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
new file mode 100644
index 0000000000..3e34fb96d8
--- /dev/null
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -0,0 +1,13 @@
+package lotto.model
+
+import org.assertj.core.api.Assertions.assertThat;
+import org.junit.jupiter.api.Test;
+
+class PurchasedTicketsTest {
+
+    @Test
+    fun `should calculate correct number of tickets based on purchased amount`() {
+        val tickets = PurchasedTickets(5000);
+        assertThat(tickets.ticketCount).isEqualTo(5)
+    }
+}
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/TicketModelModelTest.kt b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
index 9d73d9b589..874dae8da4 100644
--- a/src/test/kotlin/lotto/model/TicketModelModelTest.kt
+++ b/src/test/kotlin/lotto/model/TicketModelModelTest.kt
@@ -1,7 +1,6 @@
 package lotto.model
 
 import org.assertj.core.api.Assertions.assertThat
-import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.MethodSource

From 4266c9f03579d817939161c43f68d7c8354de48c Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Fri, 28 Mar 2025 22:09:04 +0100
Subject: [PATCH 15/40] test: case 2.1. refactor

---
 src/main/kotlin/lotto/model/PurchasedTickets.kt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
index 4116b2959b..5329366583 100644
--- a/src/main/kotlin/lotto/model/PurchasedTickets.kt
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -1,6 +1,7 @@
 package lotto.model
 
-class PurchasedTickets(val amount: Int) {
+const val TICKET_PRICE = 1000;
 
-    val ticketCount = 5
+class PurchasedTickets(amount: Int) {
+    val ticketCount = amount/TICKET_PRICE
 }
\ No newline at end of file

From 55401f462b90d4e42aaf81f967bf6c5b85108e3e Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Fri, 28 Mar 2025 22:40:35 +0100
Subject: [PATCH 16/40] refactor: implement ticket factory method

---
 src/main/kotlin/lotto/model/TicketModel.kt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index a102254a0c..a2ce164a6d 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -8,4 +8,10 @@ class TicketModel(val numbers : List<Int>) {
             "Ticket should contain $TICKET_NUMBER_LENGTH numbers"
         }
     }
+
+    companion object {
+        fun generate(): TicketModel {
+            return TicketModel((1..45).shuffled().take(6))
+        }
+    }
 }
\ No newline at end of file

From 45178dd417311dd3511069c992b0d116b4766808 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Fri, 28 Mar 2025 22:50:06 +0100
Subject: [PATCH 17/40] refactor: implement buy ticket method

---
 src/main/kotlin/lotto/model/PurchasedTickets.kt | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
index 5329366583..f65989cf4b 100644
--- a/src/main/kotlin/lotto/model/PurchasedTickets.kt
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -2,6 +2,11 @@ package lotto.model
 
 const val TICKET_PRICE = 1000;
 
-class PurchasedTickets(amount: Int) {
-    val ticketCount = amount/TICKET_PRICE
+class PurchasedTickets(private val tickets: List<TicketModel>) {
+    companion object {
+        fun buyTickets(amount: Int): PurchasedTickets {
+            val ticketCount = amount/TICKET_PRICE
+            return PurchasedTickets( List(ticketCount) { TicketModel.generate()} )
+        }
+    }
 }
\ No newline at end of file

From d5c83a821638db56f8d0b347d2de01dcbcb14a8b Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 20:59:27 +0200
Subject: [PATCH 18/40] test: case 2.1. refactor

---
 src/main/kotlin/lotto/model/PurchasedTickets.kt     | 2 ++
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
index f65989cf4b..a2d7914af9 100644
--- a/src/main/kotlin/lotto/model/PurchasedTickets.kt
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -3,6 +3,8 @@ package lotto.model
 const val TICKET_PRICE = 1000;
 
 class PurchasedTickets(private val tickets: List<TicketModel>) {
+    fun getTickets(): List<TicketModel> = tickets
+
     companion object {
         fun buyTickets(amount: Int): PurchasedTickets {
             val ticketCount = amount/TICKET_PRICE
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index 3e34fb96d8..abe9c85e2c 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -7,7 +7,7 @@ class PurchasedTicketsTest {
 
     @Test
     fun `should calculate correct number of tickets based on purchased amount`() {
-        val tickets = PurchasedTickets(5000);
-        assertThat(tickets.ticketCount).isEqualTo(5)
+        val purchasedTickets = PurchasedTickets.buyTickets(5000)
+        assertThat(purchasedTickets.getTickets().size).isEqualTo(5)
     }
 }
\ No newline at end of file

From 5c8d3a9b9fd5cd53675b0346947701b5f499672f Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:03:23 +0200
Subject: [PATCH 19/40] test: case 2.2. failing test

---
 README.md                                           | 2 +-
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d84bb1fb1d..81f26e2e5a 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@
 - [x] 1.2. should fail if numbers less or more then 6
 
 ### 2. Purchased Ticket
-- [ ] 2.1. should calculate correct number of tickets based on purchased amount  
+- [X] 2.1. should calculate correct number of tickets based on purchased amount  
 - [ ] 2.2. should generate tickets based on purchased amount
 - [ ] 2.3. should return empty list if purchased amount less that ticket price
 - [ ] 2.4. should fail if purchased amount is negative
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index abe9c85e2c..20e77ee427 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -10,4 +10,10 @@ class PurchasedTicketsTest {
         val purchasedTickets = PurchasedTickets.buyTickets(5000)
         assertThat(purchasedTickets.getTickets().size).isEqualTo(5)
     }
+
+    @Test
+    fun `should generate tickets based on purchased amount`() {
+        val purchasedTickets = PurchasedTickets.buyTickets(1000)
+        assertThat(purchasedTickets.getTickets().first()).isEqualTo(TicketModel(listOf(1,2,3,4,5,6)))
+    }
 }
\ No newline at end of file

From 39859dfff0c478428b8fce00cde7db8f33c32fc4 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:25:40 +0200
Subject: [PATCH 20/40] test: add ticket number generator

---
 src/main/kotlin/lotto/model/RandomTicketNumberGenerator.kt | 7 +++++++
 src/main/kotlin/lotto/model/TicketNumberGenerator.kt       | 5 +++++
 2 files changed, 12 insertions(+)
 create mode 100644 src/main/kotlin/lotto/model/RandomTicketNumberGenerator.kt
 create mode 100644 src/main/kotlin/lotto/model/TicketNumberGenerator.kt

diff --git a/src/main/kotlin/lotto/model/RandomTicketNumberGenerator.kt b/src/main/kotlin/lotto/model/RandomTicketNumberGenerator.kt
new file mode 100644
index 0000000000..059ee56780
--- /dev/null
+++ b/src/main/kotlin/lotto/model/RandomTicketNumberGenerator.kt
@@ -0,0 +1,7 @@
+package lotto.model
+
+class RandomTicketNumberGenerator: TicketNumberGenerator {
+    override fun generateNumbers(): List<Int> {
+        return (1..45).shuffled().take(6).toList()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/lotto/model/TicketNumberGenerator.kt b/src/main/kotlin/lotto/model/TicketNumberGenerator.kt
new file mode 100644
index 0000000000..820c072227
--- /dev/null
+++ b/src/main/kotlin/lotto/model/TicketNumberGenerator.kt
@@ -0,0 +1,5 @@
+package lotto.model
+
+interface TicketNumberGenerator {
+    fun generateNumbers(): List<Int>
+}
\ No newline at end of file

From 4e8e38bdcb9a27885a09e34794253f82be11ee09 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:35:35 +0200
Subject: [PATCH 21/40] refactor: generate ticket using generator

---
 src/main/kotlin/lotto/model/PurchasedTickets.kt | 4 ++--
 src/main/kotlin/lotto/model/TicketModel.kt      | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
index a2d7914af9..113831e23e 100644
--- a/src/main/kotlin/lotto/model/PurchasedTickets.kt
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -6,9 +6,9 @@ class PurchasedTickets(private val tickets: List<TicketModel>) {
     fun getTickets(): List<TicketModel> = tickets
 
     companion object {
-        fun buyTickets(amount: Int): PurchasedTickets {
+        fun buyTickets(amount: Int, generator: TicketNumberGenerator): PurchasedTickets {
             val ticketCount = amount/TICKET_PRICE
-            return PurchasedTickets( List(ticketCount) { TicketModel.generate()} )
+            return PurchasedTickets( List(ticketCount) { TicketModel.generate(generator)} )
         }
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index a2ce164a6d..a5ca280e18 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -10,8 +10,8 @@ class TicketModel(val numbers : List<Int>) {
     }
 
     companion object {
-        fun generate(): TicketModel {
-            return TicketModel((1..45).shuffled().take(6))
+        fun generate(generator: TicketNumberGenerator): TicketModel {
+            return TicketModel(generator.generateNumbers())
         }
     }
 }
\ No newline at end of file

From dbef2504716818a35de7ba8c00ffe3bc2df2ac8c Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:50:11 +0200
Subject: [PATCH 22/40] test: case 2.2. refactoring

---
 src/main/kotlin/lotto/model/TicketModel.kt          |  2 +-
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 11 ++++++++---
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/main/kotlin/lotto/model/TicketModel.kt b/src/main/kotlin/lotto/model/TicketModel.kt
index a5ca280e18..4f73f315f8 100644
--- a/src/main/kotlin/lotto/model/TicketModel.kt
+++ b/src/main/kotlin/lotto/model/TicketModel.kt
@@ -2,7 +2,7 @@ package lotto.model
 
 const val TICKET_NUMBER_LENGTH = 6
 
-class TicketModel(val numbers : List<Int>) {
+data class TicketModel(val numbers : List<Int>) {
     init {
         require(numbers.size == TICKET_NUMBER_LENGTH) {
             "Ticket should contain $TICKET_NUMBER_LENGTH numbers"
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index 20e77ee427..0c24dadb28 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -4,16 +4,21 @@ import org.assertj.core.api.Assertions.assertThat;
 import org.junit.jupiter.api.Test;
 
 class PurchasedTicketsTest {
+    private val testGenerator = TestTicketNumberGenerator(listOf(1, 2, 3, 4, 5, 6))
 
     @Test
     fun `should calculate correct number of tickets based on purchased amount`() {
-        val purchasedTickets = PurchasedTickets.buyTickets(5000)
+        val purchasedTickets = PurchasedTickets.buyTickets(5000, testGenerator)
         assertThat(purchasedTickets.getTickets().size).isEqualTo(5)
     }
 
     @Test
     fun `should generate tickets based on purchased amount`() {
-        val purchasedTickets = PurchasedTickets.buyTickets(1000)
-        assertThat(purchasedTickets.getTickets().first()).isEqualTo(TicketModel(listOf(1,2,3,4,5,6)))
+        val purchasedTickets = PurchasedTickets.buyTickets(1000, testGenerator)
+        assertThat(purchasedTickets.getTickets().first()).isEqualTo(TicketModel(listOf(1, 2, 3, 4, 5, 6)))
+    }
+
+    class TestTicketNumberGenerator(private val fixedNumbers: List<Int>) : TicketNumberGenerator {
+        override fun generateNumbers(): List<Int> = fixedNumbers
     }
 }
\ No newline at end of file

From 35960000620c9177bcaa8d487e5ff5c52b6c95c4 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:52:09 +0200
Subject: [PATCH 23/40] test: case 2.2. refactoring

---
 README.md                                           | 2 +-
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 81f26e2e5a..20ccf0dcea 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,6 @@
 
 ### 2. Purchased Ticket
 - [X] 2.1. should calculate correct number of tickets based on purchased amount  
-- [ ] 2.2. should generate tickets based on purchased amount
+- [ ] 2.2. should generate tickets with correct numbers using generator
 - [ ] 2.3. should return empty list if purchased amount less that ticket price
 - [ ] 2.4. should fail if purchased amount is negative
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index 0c24dadb28..c325a11da9 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -13,7 +13,7 @@ class PurchasedTicketsTest {
     }
 
     @Test
-    fun `should generate tickets based on purchased amount`() {
+    fun `should generate tickets with correct numbers using generator`() {
         val purchasedTickets = PurchasedTickets.buyTickets(1000, testGenerator)
         assertThat(purchasedTickets.getTickets().first()).isEqualTo(TicketModel(listOf(1, 2, 3, 4, 5, 6)))
     }

From 02a7229709d9fe532977ba5da5eb13c0799c6902 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:53:25 +0200
Subject: [PATCH 24/40] test: case 2.3. passing test

---
 README.md                                           | 4 ++--
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 20ccf0dcea..5f758275b1 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,6 @@
 
 ### 2. Purchased Ticket
 - [X] 2.1. should calculate correct number of tickets based on purchased amount  
-- [ ] 2.2. should generate tickets with correct numbers using generator
-- [ ] 2.3. should return empty list if purchased amount less that ticket price
+- [x] 2.2. should generate tickets with correct numbers using generator
+- [x] 2.3. should return empty list if purchased amount less that ticket price
 - [ ] 2.4. should fail if purchased amount is negative
diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index c325a11da9..80ef300c69 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -18,6 +18,12 @@ class PurchasedTicketsTest {
         assertThat(purchasedTickets.getTickets().first()).isEqualTo(TicketModel(listOf(1, 2, 3, 4, 5, 6)))
     }
 
+    @Test
+    fun `should return empty list if purchased amount less that ticket price`() {
+        val purchasedTickets = PurchasedTickets.buyTickets(999, testGenerator)
+        assertThat(purchasedTickets.getTickets().size).isEqualTo(0)
+    }
+
     class TestTicketNumberGenerator(private val fixedNumbers: List<Int>) : TicketNumberGenerator {
         override fun generateNumbers(): List<Int> = fixedNumbers
     }

From 87511259ae35e3525026cb55994f00ac7a90fe10 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:56:01 +0200
Subject: [PATCH 25/40] test: case 2.4. failing test

---
 src/test/kotlin/lotto/model/PurchasedTicketsTest.kt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
index 80ef300c69..93efa1fa1a 100644
--- a/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
+++ b/src/test/kotlin/lotto/model/PurchasedTicketsTest.kt
@@ -2,6 +2,7 @@ package lotto.model
 
 import org.assertj.core.api.Assertions.assertThat;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.assertThrows
 
 class PurchasedTicketsTest {
     private val testGenerator = TestTicketNumberGenerator(listOf(1, 2, 3, 4, 5, 6))
@@ -24,6 +25,13 @@ class PurchasedTicketsTest {
         assertThat(purchasedTickets.getTickets().size).isEqualTo(0)
     }
 
+    @Test
+    fun `should fail if purchased amount is negative`() {
+        assertThrows<IllegalArgumentException> {
+            PurchasedTickets.buyTickets(-1, testGenerator)
+        }
+    }
+
     class TestTicketNumberGenerator(private val fixedNumbers: List<Int>) : TicketNumberGenerator {
         override fun generateNumbers(): List<Int> = fixedNumbers
     }

From 855ee4bf848727d7e013ee1ca6e39d10c674dc30 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 21:56:40 +0200
Subject: [PATCH 26/40] test: case 2.4. passing test

---
 src/main/kotlin/lotto/model/PurchasedTickets.kt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/main/kotlin/lotto/model/PurchasedTickets.kt b/src/main/kotlin/lotto/model/PurchasedTickets.kt
index 113831e23e..df26055c8c 100644
--- a/src/main/kotlin/lotto/model/PurchasedTickets.kt
+++ b/src/main/kotlin/lotto/model/PurchasedTickets.kt
@@ -7,8 +7,9 @@ class PurchasedTickets(private val tickets: List<TicketModel>) {
 
     companion object {
         fun buyTickets(amount: Int, generator: TicketNumberGenerator): PurchasedTickets {
-            val ticketCount = amount/TICKET_PRICE
-            return PurchasedTickets( List(ticketCount) { TicketModel.generate(generator)} )
+            require(amount > 0)
+            val ticketCount = amount / TICKET_PRICE
+            return PurchasedTickets(List(ticketCount) { TicketModel.generate(generator) })
         }
     }
 }
\ No newline at end of file

From 9bb66939ed8b18b207a8d334fbd38e8b981e933f Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 22:38:25 +0200
Subject: [PATCH 27/40] test: test cases for Lotto Result

---
 README.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5f758275b1..95ca56fa33 100644
--- a/README.md
+++ b/README.md
@@ -32,4 +32,9 @@
 - [X] 2.1. should calculate correct number of tickets based on purchased amount  
 - [x] 2.2. should generate tickets with correct numbers using generator
 - [x] 2.3. should return empty list if purchased amount less that ticket price
-- [ ] 2.4. should fail if purchased amount is negative
+- [x] 2.4. should fail if purchased amount is negative
+
+### 3. Lotto Result
+- [ ] 3.1. should calculate matches
+- [ ] 3.1. should calculate total prize correctly
+- [ ] 3.2. should calculate return rate correctly

From a019f154d9b0fa1cf6d4dc2ed5bb05fe5dcff39f Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 22:53:18 +0200
Subject: [PATCH 28/40] test: case 3.1. failing test

---
 src/test/kotlin/lotto/model/LottoResultTest.kt | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/test/kotlin/lotto/model/LottoResultTest.kt

diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
new file mode 100644
index 0000000000..8026c57b82
--- /dev/null
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -0,0 +1,17 @@
+package lotto.model
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+
+class LottoResultTest {
+    @Test
+    fun `should calculate matches`() {
+        val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+        val tickets = listOf(
+            TicketModel(listOf(1, 2, 3, 4, 5, 6))
+        )
+        val lottoResult = LottoResult(winningNumbers, tickets)
+        val result = lottoResult.calculateResult()
+        assertThat(result[6]).isEqualTo(1)
+    }
+}
\ No newline at end of file

From aa601be88b141f7e3e4c3ac2d51d1253ec70b96e Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 22:53:24 +0200
Subject: [PATCH 29/40] test: case 3.1. passing test

---
 src/main/kotlin/lotto/model/LottoResult.kt | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 src/main/kotlin/lotto/model/LottoResult.kt

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
new file mode 100644
index 0000000000..6ee6cebe73
--- /dev/null
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -0,0 +1,8 @@
+package lotto.model
+
+class LottoResult(private val winningNumbers: List<Int>, private val tickets: List<TicketModel>) {
+    fun calculateResult(): Map<Int, Int> {
+        return mapOf(Pair(6,1))
+    }
+
+}
\ No newline at end of file

From 181397d6b0d24dde8011ae2a9ff69eca6b3fa442 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:06:56 +0200
Subject: [PATCH 30/40] test: case 3.1. refactor

---
 src/main/kotlin/lotto/model/LottoResult.kt     | 6 ++++--
 src/test/kotlin/lotto/model/LottoResultTest.kt | 4 ++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index 6ee6cebe73..a5232e72cd 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -2,7 +2,9 @@ package lotto.model
 
 class LottoResult(private val winningNumbers: List<Int>, private val tickets: List<TicketModel>) {
     fun calculateResult(): Map<Int, Int> {
-        return mapOf(Pair(6,1))
+        return tickets.groupingBy { ticket ->
+            ticket.numbers.count { it in winningNumbers }
+        }
+            .eachCount()
     }
-
 }
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
index 8026c57b82..d3b037ade9 100644
--- a/src/test/kotlin/lotto/model/LottoResultTest.kt
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -8,10 +8,10 @@ class LottoResultTest {
     fun `should calculate matches`() {
         val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
         val tickets = listOf(
-            TicketModel(listOf(1, 2, 3, 4, 5, 6))
+            TicketModel(listOf(1, 2, 3, 4, 5, 7))
         )
         val lottoResult = LottoResult(winningNumbers, tickets)
         val result = lottoResult.calculateResult()
-        assertThat(result[6]).isEqualTo(1)
+        assertThat(result[5]).isEqualTo(1)
     }
 }
\ No newline at end of file

From e575348e598697f3b6542853b0cac4f07e89db22 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:11:52 +0200
Subject: [PATCH 31/40] test: case 3.2. failing test

---
 src/main/kotlin/lotto/model/LottoResult.kt     |  4 ++++
 src/test/kotlin/lotto/model/LottoResultTest.kt | 13 +++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index a5232e72cd..38dae535e2 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -7,4 +7,8 @@ class LottoResult(private val winningNumbers: List<Int>, private val tickets: Li
         }
             .eachCount()
     }
+
+    fun totalPrize(): Int{
+        return 0
+    }
 }
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
index d3b037ade9..e07b05a1ea 100644
--- a/src/test/kotlin/lotto/model/LottoResultTest.kt
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -14,4 +14,17 @@ class LottoResultTest {
         val result = lottoResult.calculateResult()
         assertThat(result[5]).isEqualTo(1)
     }
+
+    @Test
+    fun `should calculate total prize correctly`() {
+        val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+        val tickets = listOf(
+            TicketModel(listOf(1, 2, 3, 4, 5, 6)),
+            TicketModel(listOf(1, 2, 3, 4, 5, 7)),
+            TicketModel(listOf(1, 2, 3, 4, 7, 8)),
+
+        )
+        val lottoResult = LottoResult(winningNumbers, tickets)
+        assertThat(lottoResult.totalPrize()).isEqualTo(2_001_550_000)
+    }
 }
\ No newline at end of file

From e28b3dafe62aaa0a2f56827d1dac0bb212efcff5 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:12:15 +0200
Subject: [PATCH 32/40] test: case 3.2. passing test

---
 src/main/kotlin/lotto/model/LottoResult.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index 38dae535e2..7980dac218 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -9,6 +9,6 @@ class LottoResult(private val winningNumbers: List<Int>, private val tickets: Li
     }
 
     fun totalPrize(): Int{
-        return 0
+        return 2_001_550_000
     }
 }
\ No newline at end of file

From 87a01f4b1dd87f226cff8b01295af3f752d39792 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:14:12 +0200
Subject: [PATCH 33/40] test: case 3.2. refactor

---
 src/main/kotlin/lotto/model/LottoResult.kt | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index 7980dac218..732623bf17 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -9,6 +9,15 @@ class LottoResult(private val winningNumbers: List<Int>, private val tickets: Li
     }
 
     fun totalPrize(): Int{
-        return 2_001_550_000
+        val prizeMap = mapOf(
+            3 to 5_000,
+            4 to 50_000,
+            5 to 1_500_000,
+            6 to 2_000_000_000
+        )
+
+        return calculateResult().entries.sumOf { (matchCount, count) ->
+            prizeMap[matchCount]?.times(count) ?: 0
+        }
     }
 }
\ No newline at end of file

From 553ac317351908d44e57b6f0e24c6bbab75a19bb Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:18:37 +0200
Subject: [PATCH 34/40] test: case 3.3. passing test

---
 src/main/kotlin/lotto/model/LottoResult.kt     |  4 ++++
 src/test/kotlin/lotto/model/LottoResultTest.kt | 13 +++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index 732623bf17..3a880b38cf 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -20,4 +20,8 @@ class LottoResult(private val winningNumbers: List<Int>, private val tickets: Li
             prizeMap[matchCount]?.times(count) ?: 0
         }
     }
+
+    fun returnRate(): Double {
+        return 667_183.33
+    }
 }
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
index e07b05a1ea..598089d04f 100644
--- a/src/test/kotlin/lotto/model/LottoResultTest.kt
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -27,4 +27,17 @@ class LottoResultTest {
         val lottoResult = LottoResult(winningNumbers, tickets)
         assertThat(lottoResult.totalPrize()).isEqualTo(2_001_550_000)
     }
+
+    @Test
+    fun `should calculate return rate correctly`() {
+        val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+        val tickets = listOf(
+            TicketModel(listOf(1, 2, 3, 4, 5, 6)),
+            TicketModel(listOf(1, 2, 3, 4, 5, 7)),
+            TicketModel(listOf(1, 2, 3, 4, 7, 8)),
+
+            )
+        val lottoResult = LottoResult(winningNumbers, tickets)
+        assertThat(lottoResult.returnRate()).isEqualTo(667_183.33)
+    }
 }
\ No newline at end of file

From 278a134499bfca3c8aa77a6bdf608299e3f6c369 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:22:00 +0200
Subject: [PATCH 35/40] test: case 3.3. refactor

---
 src/main/kotlin/lotto/model/LottoResult.kt     | 4 ++--
 src/test/kotlin/lotto/model/LottoResultTest.kt | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index 3a880b38cf..ec76f9192e 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -21,7 +21,7 @@ class LottoResult(private val winningNumbers: List<Int>, private val tickets: Li
         }
     }
 
-    fun returnRate(): Double {
-        return 667_183.33
+    fun returnRate(purchaseAmount: Int): Double {
+        return if (purchaseAmount == 0) 0.0 else totalPrize().toDouble() / purchaseAmount
     }
 }
\ No newline at end of file
diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
index 598089d04f..4f67491f06 100644
--- a/src/test/kotlin/lotto/model/LottoResultTest.kt
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -38,6 +38,7 @@ class LottoResultTest {
 
             )
         val lottoResult = LottoResult(winningNumbers, tickets)
-        assertThat(lottoResult.returnRate()).isEqualTo(667_183.33)
+        val purchasedAmount = 3000
+        assertThat(lottoResult.returnRate(purchasedAmount)).isEqualTo(667_183.3333333334)
     }
 }
\ No newline at end of file

From 0b81b9f32b87f512a45c6a97269cd0a856f5496b Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:27:03 +0200
Subject: [PATCH 36/40] test: case 3.4. implementation

---
 README.md                                      |  1 +
 src/main/kotlin/lotto/model/LottoResult.kt     |  3 +++
 src/test/kotlin/lotto/model/LottoResultTest.kt | 11 +++++++++++
 3 files changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 95ca56fa33..d8c41cfd48 100644
--- a/README.md
+++ b/README.md
@@ -38,3 +38,4 @@
 - [ ] 3.1. should calculate matches
 - [ ] 3.1. should calculate total prize correctly
 - [ ] 3.2. should calculate return rate correctly
+- [ ] 3.4. should return empty map if matches less than 3
diff --git a/src/main/kotlin/lotto/model/LottoResult.kt b/src/main/kotlin/lotto/model/LottoResult.kt
index ec76f9192e..4943145c5d 100644
--- a/src/main/kotlin/lotto/model/LottoResult.kt
+++ b/src/main/kotlin/lotto/model/LottoResult.kt
@@ -1,11 +1,14 @@
 package lotto.model
 
+const val MINIMUM_MATCHES = 3
+
 class LottoResult(private val winningNumbers: List<Int>, private val tickets: List<TicketModel>) {
     fun calculateResult(): Map<Int, Int> {
         return tickets.groupingBy { ticket ->
             ticket.numbers.count { it in winningNumbers }
         }
             .eachCount()
+            .filterKeys { it >= MINIMUM_MATCHES }
     }
 
     fun totalPrize(): Int{
diff --git a/src/test/kotlin/lotto/model/LottoResultTest.kt b/src/test/kotlin/lotto/model/LottoResultTest.kt
index 4f67491f06..017f88f0ee 100644
--- a/src/test/kotlin/lotto/model/LottoResultTest.kt
+++ b/src/test/kotlin/lotto/model/LottoResultTest.kt
@@ -15,6 +15,17 @@ class LottoResultTest {
         assertThat(result[5]).isEqualTo(1)
     }
 
+    @Test
+    fun `should return empty map if matches less than 3`() {
+        val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+        val tickets = listOf(
+            TicketModel(listOf(1, 2, 7, 8, 9, 10))
+        )
+        val lottoResult = LottoResult(winningNumbers, tickets)
+        val result = lottoResult.calculateResult()
+        assertThat(result).isEmpty()
+    }
+
     @Test
     fun `should calculate total prize correctly`() {
         val winningNumbers = listOf(1, 2, 3, 4, 5, 6)

From 51a77dc89bde52791a4915542ad405524a5e8f40 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:27:45 +0200
Subject: [PATCH 37/40] docs: mark implemented tests

---
 README.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index d8c41cfd48..52235f1783 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@
 - [x] 2.4. should fail if purchased amount is negative
 
 ### 3. Lotto Result
-- [ ] 3.1. should calculate matches
-- [ ] 3.1. should calculate total prize correctly
-- [ ] 3.2. should calculate return rate correctly
-- [ ] 3.4. should return empty map if matches less than 3
+- [x] 3.1. should calculate matches
+- [x] 3.1. should calculate total prize correctly
+- [x] 3.2. should calculate return rate correctly
+- [x] 3.4. should return empty map if matches less than 3

From 6b21092ca3b741e0340b305d78d19aef9db0aff0 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Mon, 31 Mar 2025 23:37:16 +0200
Subject: [PATCH 38/40] feat: LottoController

---
 src/main/kotlin/lotto/Main.kt                 |  7 +++++++
 .../lotto/controller/LottoController.kt       | 20 +++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 src/main/kotlin/lotto/Main.kt
 create mode 100644 src/main/kotlin/lotto/controller/LottoController.kt

diff --git a/src/main/kotlin/lotto/Main.kt b/src/main/kotlin/lotto/Main.kt
new file mode 100644
index 0000000000..403b6a06e6
--- /dev/null
+++ b/src/main/kotlin/lotto/Main.kt
@@ -0,0 +1,7 @@
+package lotto
+
+import lotto.controller.LottoController
+
+fun main() {
+    LottoController.run()
+}
\ No newline at end of file
diff --git a/src/main/kotlin/lotto/controller/LottoController.kt b/src/main/kotlin/lotto/controller/LottoController.kt
new file mode 100644
index 0000000000..62d08b9e0f
--- /dev/null
+++ b/src/main/kotlin/lotto/controller/LottoController.kt
@@ -0,0 +1,20 @@
+package lotto.controller
+
+import lotto.model.LottoResult
+import lotto.model.PurchasedTickets
+import lotto.model.RandomTicketNumberGenerator
+
+class LottoController {
+
+    companion object {
+        private val generator = RandomTicketNumberGenerator()
+        fun run() {
+            val purchasedAmount = 5000
+            val purchasedTickets = PurchasedTickets.buyTickets(purchasedAmount, generator)
+            println(purchasedTickets.getTickets())
+            val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+            val result = LottoResult(winningNumbers, purchasedTickets.getTickets())
+            println(result)
+        }
+    }
+}
\ No newline at end of file

From 2d8f4bc0f61d1c23d8e8354fdbfbf967403ccd51 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Tue, 1 Apr 2025 00:05:24 +0200
Subject: [PATCH 39/40] feat: InputView

---
 .../lotto/controller/LottoController.kt       |  5 ++--
 src/main/kotlin/lotto/view/InputView.kt       | 23 +++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)
 create mode 100644 src/main/kotlin/lotto/view/InputView.kt

diff --git a/src/main/kotlin/lotto/controller/LottoController.kt b/src/main/kotlin/lotto/controller/LottoController.kt
index 62d08b9e0f..cff5ffb039 100644
--- a/src/main/kotlin/lotto/controller/LottoController.kt
+++ b/src/main/kotlin/lotto/controller/LottoController.kt
@@ -3,16 +3,17 @@ package lotto.controller
 import lotto.model.LottoResult
 import lotto.model.PurchasedTickets
 import lotto.model.RandomTicketNumberGenerator
+import lotto.view.InputView
 
 class LottoController {
 
     companion object {
         private val generator = RandomTicketNumberGenerator()
         fun run() {
-            val purchasedAmount = 5000
+            val purchasedAmount = InputView.readPurchaseAmount()
             val purchasedTickets = PurchasedTickets.buyTickets(purchasedAmount, generator)
             println(purchasedTickets.getTickets())
-            val winningNumbers = listOf(1, 2, 3, 4, 5, 6)
+            val winningNumbers = InputView.readWinningNumbers()
             val result = LottoResult(winningNumbers, purchasedTickets.getTickets())
             println(result)
         }
diff --git a/src/main/kotlin/lotto/view/InputView.kt b/src/main/kotlin/lotto/view/InputView.kt
new file mode 100644
index 0000000000..cd45e16927
--- /dev/null
+++ b/src/main/kotlin/lotto/view/InputView.kt
@@ -0,0 +1,23 @@
+package lotto.view
+
+class InputView {
+
+    companion object {
+        fun readPurchaseAmount(): Int {
+            println("Please enter the purchase amount.")
+            return readlnOrNull()?.toIntOrNull()
+                ?.takeIf { it >= 1000 }
+                ?: throw IllegalArgumentException("Invalid amount. Must be at least 1,000 KRW.")
+        }
+
+        fun readWinningNumbers(): List<Int> {
+            println("Please enter last week’s winning numbers.")
+            return readlnOrNull()
+                ?.split(",")
+                ?.map { it.trim().toInt() }
+                ?.toList()
+                ?.takeIf { it.size == 6 }
+                ?: throw IllegalArgumentException("Invalid input. Must enter exactly 6 unique numbers.")
+        }
+    }
+}
\ No newline at end of file

From eb29f3f1c24bd407bed0b456936ee54034483d86 Mon Sep 17 00:00:00 2001
From: Arkadii Shyn <arkadii.shyn@deliveryhero.com>
Date: Tue, 1 Apr 2025 00:11:04 +0200
Subject: [PATCH 40/40] feat: ResultView

---
 .../lotto/controller/LottoController.kt       |  6 ++--
 src/main/kotlin/lotto/view/ResultView.kt      | 36 +++++++++++++++++++
 2 files changed, 40 insertions(+), 2 deletions(-)
 create mode 100644 src/main/kotlin/lotto/view/ResultView.kt

diff --git a/src/main/kotlin/lotto/controller/LottoController.kt b/src/main/kotlin/lotto/controller/LottoController.kt
index cff5ffb039..1f84445e75 100644
--- a/src/main/kotlin/lotto/controller/LottoController.kt
+++ b/src/main/kotlin/lotto/controller/LottoController.kt
@@ -4,6 +4,7 @@ import lotto.model.LottoResult
 import lotto.model.PurchasedTickets
 import lotto.model.RandomTicketNumberGenerator
 import lotto.view.InputView
+import lotto.view.ResultView
 
 class LottoController {
 
@@ -12,10 +13,11 @@ class LottoController {
         fun run() {
             val purchasedAmount = InputView.readPurchaseAmount()
             val purchasedTickets = PurchasedTickets.buyTickets(purchasedAmount, generator)
-            println(purchasedTickets.getTickets())
+            ResultView.showTickets(purchasedTickets.getTickets())
+
             val winningNumbers = InputView.readWinningNumbers()
             val result = LottoResult(winningNumbers, purchasedTickets.getTickets())
-            println(result)
+            ResultView.showStatistics(result, purchasedAmount)
         }
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/lotto/view/ResultView.kt b/src/main/kotlin/lotto/view/ResultView.kt
new file mode 100644
index 0000000000..3b5bc99b46
--- /dev/null
+++ b/src/main/kotlin/lotto/view/ResultView.kt
@@ -0,0 +1,36 @@
+package lotto.view
+
+import lotto.model.LottoResult
+import lotto.model.TicketModel
+
+class ResultView {
+
+    companion object {
+        fun showTickets(tickets: List<TicketModel>) {
+            println("You have purchased ${tickets.size} tickets.")
+            tickets.forEach { println(it) }
+        }
+
+        fun showStatistics(result: LottoResult, purchaseAmount: Int) {
+            println("Winning Statistics")
+            println("------------------")
+
+            val stats = result.calculateResult()
+            val prizeMap = mapOf(
+                3 to 5_000L,
+                4 to 50_000L,
+                5 to 1_500_000L,
+                6 to 2_000_000_000L
+            )
+
+            prizeMap.forEach { (matchCount, prize) ->
+                val count = stats.getOrDefault(matchCount, 0)
+                println("$matchCount Matches ($prize KRW) - $count tickets")
+            }
+
+            val returnRate = result.returnRate(purchaseAmount)
+            println("Total return rate is %.2f (A rate below 1 means a loss)".format(returnRate))
+        }
+    }
+
+}
\ No newline at end of file