diff --git a/app/build.gradle b/app/build.gradle
index 15cbda4..1f1487e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -80,5 +80,13 @@ dependencies {
     implementation 'com.google.dagger:dagger:2.42'
     kapt 'com.google.dagger:dagger-compiler:2.42'
 
+    //Mockito
+    testImplementation "org.mockito:mockito-core:3.12.4"
+    testImplementation 'org.mockito:mockito-inline:2.8.9'
+    testImplementation('com.nhaarman:mockito-kotlin:1.5.0') {
+        exclude group: 'org.jetbrains.kotlin'
+        exclude group: 'org.mockito'
+    }
+
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/githubclient/mvp/presenter/MainPresenter.kt b/app/src/main/java/com/example/githubclient/mvp/presenter/MainPresenter.kt
index 72946b8..4920c83 100644
--- a/app/src/main/java/com/example/githubclient/mvp/presenter/MainPresenter.kt
+++ b/app/src/main/java/com/example/githubclient/mvp/presenter/MainPresenter.kt
@@ -12,7 +12,7 @@ class MainPresenter : MvpPresenter<MainView>() {
 
     @Inject
     lateinit var screens: IScreens
-    override fun onFirstViewAttach() {
+    public override fun onFirstViewAttach() {
         super.onFirstViewAttach()
         router.replaceScreen(screens.users())
     }
diff --git a/app/src/main/java/com/example/githubclient/mvp/presenter/RepositoryPresenter.kt b/app/src/main/java/com/example/githubclient/mvp/presenter/RepositoryPresenter.kt
index 643f1dd..cd4505a 100644
--- a/app/src/main/java/com/example/githubclient/mvp/presenter/RepositoryPresenter.kt
+++ b/app/src/main/java/com/example/githubclient/mvp/presenter/RepositoryPresenter.kt
@@ -12,7 +12,7 @@ class RepositoryPresenter(private val githubUserRepositories: GithubUserReposito
     @Inject
     lateinit var router: Router
 
-    override fun onFirstViewAttach() {
+    public override fun onFirstViewAttach() {
         super.onFirstViewAttach()
         viewState.init()
         githubUserRepositories?.let { viewState.setId(it.id) }
diff --git a/app/src/test/java/com/example/githubclient/MainPresenterTest.kt b/app/src/test/java/com/example/githubclient/MainPresenterTest.kt
new file mode 100644
index 0000000..f67e18e
--- /dev/null
+++ b/app/src/test/java/com/example/githubclient/MainPresenterTest.kt
@@ -0,0 +1,59 @@
+package com.example.githubclient
+
+import com.example.githubclient.mvp.presenter.MainPresenter
+import com.example.githubclient.mvp.view.MainView
+import com.example.githubclient.navigation.IScreens
+import com.github.terrakok.cicerone.Router
+import com.github.terrakok.cicerone.Screen
+import com.nhaarman.mockito_kotlin.atLeastOnce
+import com.nhaarman.mockito_kotlin.mock
+import com.nhaarman.mockito_kotlin.times
+import com.nhaarman.mockito_kotlin.whenever
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.Mockito
+import org.mockito.MockitoAnnotations
+
+class MainPresenterTest {
+    private lateinit var presenter: MainPresenter
+
+    @Mock
+    private lateinit var view: MainView
+
+    @Mock
+    private lateinit var router: Router
+
+    @Mock
+    private lateinit var screens: IScreens
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.openMocks(this)
+
+        presenter = MainPresenter()
+        presenter.router = router
+        presenter.screens = screens
+        presenter.attachView(view)
+
+    }
+
+    @Test
+    fun onFirstViewAttach_Test() {
+        val expectedScreen = mock<Screen>()
+        whenever(screens.users()).thenReturn(expectedScreen)
+
+        presenter.onFirstViewAttach()
+
+        Mockito.verify(screens, atLeastOnce()).users()
+        Mockito.verify(router, times(1)).replaceScreen(expectedScreen)
+    }
+
+    @Test
+    fun backClicked_shouldExitRouter() {
+
+        presenter.backClicked()
+
+        Mockito.verify(router, times(1)).exit()
+    }
+}
\ No newline at end of file
diff --git a/app/src/test/java/com/example/githubclient/RepositoryPresenterTest.kt b/app/src/test/java/com/example/githubclient/RepositoryPresenterTest.kt
new file mode 100644
index 0000000..013ee70
--- /dev/null
+++ b/app/src/test/java/com/example/githubclient/RepositoryPresenterTest.kt
@@ -0,0 +1,64 @@
+package com.example.githubclient
+
+import com.example.githubclient.mvp.model.entity.GithubUserRepositories
+import com.example.githubclient.mvp.presenter.RepositoryPresenter
+import com.example.githubclient.mvp.view.RepositoryView
+import com.github.terrakok.cicerone.Router
+import com.nhaarman.mockito_kotlin.atMost
+import com.nhaarman.mockito_kotlin.mock
+import com.nhaarman.mockito_kotlin.times
+import com.nhaarman.mockito_kotlin.verify
+import com.nhaarman.mockito_kotlin.whenever
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.MockitoAnnotations
+
+class RepositoryPresenterTest {
+    private lateinit var presenter: RepositoryPresenter
+
+    @Mock
+    private lateinit var view: RepositoryView
+
+    @Mock
+    private lateinit var router: Router
+
+    @Mock
+    private lateinit var githubRepository: GithubUserRepositories
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.openMocks(this)
+
+        githubRepository = mock()
+        presenter = RepositoryPresenter(githubRepository)
+        presenter.router = router
+        presenter.attachView(view)
+    }
+
+    @Test
+    fun onFirstViewAttach_Test() {
+        whenever(githubRepository.id)
+            .thenReturn("1")
+            .thenReturn("2")
+        whenever(githubRepository.name)
+            .thenReturn("Ololo")
+            .thenReturn("Ururu")
+        whenever(githubRepository.forksCount)
+            .thenReturn(5)
+            .thenReturn(10)
+
+        presenter.onFirstViewAttach()
+
+        verify(githubRepository, atMost(2)).id
+        verify(githubRepository, atMost(2)).name
+        verify(githubRepository, atMost(2)).forksCount
+    }
+
+    @Test
+    fun backPressed_Test() {
+        presenter.backPressed()
+
+        verify(router, times(1)).exit()
+    }
+}
\ No newline at end of file