Add: Tests for the minimum required Android Gradle Plugin version check (#56)

Author: Rolf-Smit

gradle/libs.versions.toml

@@ -19,6 +19,7 @@ androidJUnit        = { module = "androidx.test.ext:junit",                 vers
 commonsCsv          = { module = "org.apache.commons:commons-csv",          version = "1.9.0" }
 kotlinTest          = { module = "org.jetbrains.kotlin:kotlin-test",        version.ref = "kotlin" }
 robolectric         = { module = "org.robolectric:robolectric",             version = "4.7.3" }
+mockk               = { module = "io.mockk:mockk",                          version = "1.12.4" }
 
 [bundles]
 androidInstrumentedTest = ["supportTestRunner", "espressoCore", "androidJUnit"]

plugin/build.gradle

@@ -74,4 +74,5 @@ dependencies {
     testImplementation libs.androidGradlePlugin
     testImplementation libs.bundles.jvmTest
     testImplementation gradleTestKit()
+    testImplementation libs.mockk
 }

plugin/src/test/kotlin/org/neotech/plugin/rootcoverage/AndroidGradlePluginExtensionsTest.kt

@@ -0,0 +1,32 @@
+package org.neotech.plugin.rootcoverage
+
+import com.android.build.api.AndroidPluginVersion
+import com.android.build.api.variant.AndroidComponentsExtension
+import io.mockk.every
+import io.mockk.mockk
+import org.gradle.api.GradleException
+import org.junit.Test
+import org.neotech.plugin.rootcoverage.utilities.assertMinimumRequiredAGPVersion
+
+class AndroidGradlePluginExtensionsTest {
+
+    @Test(expected = GradleException::class)
+    fun `when AGP version is lower than minimum required then assertMinimumRequiredAGPVersion throws an exception`() {
+
+        val mockedAndroidComponentsExtension = mockk<AndroidComponentsExtension<*,*,*>>()
+
+        every { mockedAndroidComponentsExtension.pluginVersion } returns AndroidPluginVersion(7, 1)
+
+        mockedAndroidComponentsExtension.assertMinimumRequiredAGPVersion(AndroidPluginVersion(7, 2).alpha(6))
+    }
+
+    @Test
+    fun `when AGP version is higher than minimum required then assertMinimumRequiredAGAVEVersion() returns successfully`() {
+
+        val mockedAndroidComponentsExtension = mockk<AndroidComponentsExtension<*,*,*>>()
+
+        every { mockedAndroidComponentsExtension.pluginVersion } returns AndroidPluginVersion(7, 3)
+
+        mockedAndroidComponentsExtension.assertMinimumRequiredAGPVersion(AndroidPluginVersion(7, 2).alpha(6))
+    }
+}