test: Add test for repeated, test template and nested tests (#21)

robolectric-extension/src/main/kotlin/tech/apter/junit/jupiter/robolectric/internal/BlockJUnit4ClassRunnerExtensions.kt

@@ -8,10 +8,14 @@ import org.junit.jupiter.api.AfterAll
 import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Disabled
+import org.junit.jupiter.api.RepeatedTest
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestFactory
+import org.junit.jupiter.api.TestTemplate
 import org.junit.runners.BlockJUnit4ClassRunner
 import org.junit.runners.model.FrameworkMethod
+import org.junit.runners.model.TestClass
+import java.lang.reflect.Modifier
 import java.util.Collections
 
 private val parameterizedTestAnnotation: Class<out Annotation>? by lazy {
@@ -24,19 +28,35 @@ private val parameterizedTestAnnotation: Class<out Annotation>? by lazy {
 }
 
 internal fun BlockJUnit4ClassRunner.computeJUnit5TestMethods(): MutableList<FrameworkMethod> {
-    val testMethods = testClass.getAnnotatedMethods(Test::class.java)
-    val testFactoryMethods = testClass.getAnnotatedMethods(TestFactory::class.java)
-    val parameterizedTestMethods = if (parameterizedTestAnnotation == null) {
-        emptyList()
-    } else {
-        testClass.getAnnotatedMethods(parameterizedTestAnnotation)
+    fun testMethods(testClass: TestClass): MutableList<FrameworkMethod> {
+        val testMethods = testClass.getAnnotatedMethods(Test::class.java)
+        val testFactoryMethods = testClass.getAnnotatedMethods(TestFactory::class.java)
+        val repeatedTestMethods = testClass.getAnnotatedMethods(RepeatedTest::class.java)
+        val testTemplateMethods = testClass.getAnnotatedMethods(TestTemplate::class.java)
+        val parameterizedTestMethods = if (parameterizedTestAnnotation == null) {
+            emptyList()
+        } else {
+            testClass.getAnnotatedMethods(parameterizedTestAnnotation)
+        }
+
+        val nestedTestMethods = testClass
+            .javaClass
+            .declaredClasses
+            .filter { !Modifier.isStatic(it.modifiers) }
+            .map { testMethods(TestClass(it)) }
+            .flatten()
+
+        val methods = mutableListOf<FrameworkMethod>()
+        methods.addAll(testMethods)
+        methods.addAll(testTemplateMethods)
+        methods.addAll(testFactoryMethods)
+        methods.addAll(repeatedTestMethods)
+        methods.addAll(parameterizedTestMethods)
+        methods.addAll(nestedTestMethods)
+        return Collections.unmodifiableList(methods)
     }
 
-    val methods = mutableListOf<FrameworkMethod>()
-    methods.addAll(testMethods)
-    methods.addAll(testFactoryMethods)
-    methods.addAll(parameterizedTestMethods)
-    return Collections.unmodifiableList(methods)
+    return testMethods(testClass)
 }
 
 @Suppress("UnusedReceiverParameter")

robolectric-extension/src/main/kotlin/tech/apter/junit/jupiter/robolectric/internal/JUnit5RobolectricTestRunner.kt

@@ -53,6 +53,10 @@ internal class JUnit5RobolectricTestRunner(clazz: Class<*>, injector: Injector =
 
     override fun computeTestMethods() = computeJUnit5TestMethods()
 
+    override fun validateNoNonStaticInnerClass(errors: MutableList<Throwable>) {
+        // Skip validation
+    }
+
     override fun isIgnored(child: FrameworkMethod) = isJUnit5Ignored(child)
 
     override fun validatePublicVoidNoArgMethods(
@@ -68,6 +72,10 @@ internal class JUnit5RobolectricTestRunner(clazz: Class<*>, injector: Injector =
         RobolectricTestRunner.HelperTestRunner(bootstrappedTestClass) {
         override fun computeTestMethods(): MutableList<FrameworkMethod> = computeJUnit5TestMethods()
 
+        override fun validateNoNonStaticInnerClass(errors: MutableList<Throwable>) {
+            // Skip validation
+        }
+
         override fun isIgnored(child: FrameworkMethod) = isJUnit5Ignored(child)
 
         override fun validatePublicVoidNoArgMethods(

robolectric-extension/src/test/kotlin/tech/apter/junit/jupiter/robolectric/RobolectricExtensionNestedSelfTest.kt

@@ -0,0 +1,24 @@
+package tech.apter.junit.jupiter.robolectric
+
+import android.app.Application
+import android.content.Context
+import androidx.test.core.app.ApplicationProvider
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.assertDoesNotThrow
+import org.junit.jupiter.api.extension.ExtendWith
+import kotlin.test.Test
+import kotlin.test.assertIs
+import kotlin.test.assertNotNull
+
+@ExtendWith(RobolectricExtension::class)
+class RobolectricExtensionNestedSelfTest {
+    @Nested
+    inner class NestedSelfTest {
+        @Test
+        fun `Given a test extended with robolectric when call a nested test then robolectric should be available`() {
+            val application = assertDoesNotThrow { ApplicationProvider.getApplicationContext<Context>() }
+            assertNotNull(application)
+            assertIs<Application>(application, "application")
+        }
+    }
+}

robolectric-extension/src/test/kotlin/tech/apter/junit/jupiter/robolectric/RobolectricExtensionRepeatedSelfTest.kt

@@ -0,0 +1,40 @@
+package tech.apter.junit.jupiter.robolectric
+
+import android.app.Application
+import android.content.Context
+import androidx.test.core.app.ApplicationProvider
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.RepeatedTest
+import org.junit.jupiter.api.RepetitionInfo
+import org.junit.jupiter.api.assertDoesNotThrow
+import org.junit.jupiter.api.extension.ExtendWith
+import kotlin.test.assertEquals
+import kotlin.test.assertIs
+import kotlin.test.assertNotNull
+
+@ExtendWith(RobolectricExtension::class)
+class RobolectricExtensionRepeatedSelfTest {
+
+    @RepeatedTest(REPEATED_TEST_COUNT)
+    fun `Given a test extended with robolectric when call a repeated test then robolectric should be available`(
+        testInfo: RepetitionInfo,
+    ) {
+        testCallCount++
+        val application = assertDoesNotThrow { ApplicationProvider.getApplicationContext<Context>() }
+        assertNotNull(application)
+        assertIs<Application>(application, "application")
+        assertEquals(REPEATED_TEST_COUNT, testInfo.totalRepetitions)
+    }
+
+    companion object {
+        private const val REPEATED_TEST_COUNT = 3
+        private var testCallCount: Int = 0
+
+        @AfterAll
+        @Throws(Exception::class)
+        @JvmStatic
+        fun `Repeated test should be called as much as REPEATED_TEST_COUNT`() {
+            assertEquals(REPEATED_TEST_COUNT, testCallCount)
+        }
+    }
+}

robolectric-extension/src/test/kotlin/tech/apter/junit/jupiter/robolectric/RobolectricExtensionTestTemplateSelfTest.kt

@@ -0,0 +1,51 @@
+package tech.apter.junit.jupiter.robolectric
+
+import android.app.Application
+import android.content.Context
+import androidx.test.core.app.ApplicationProvider
+import org.junit.jupiter.api.AfterAll
+import org.junit.jupiter.api.TestTemplate
+import org.junit.jupiter.api.assertDoesNotThrow
+import org.junit.jupiter.api.extension.ExtendWith
+import org.junit.jupiter.api.extension.ExtensionContext
+import org.junit.jupiter.api.extension.TestTemplateInvocationContext
+import org.junit.jupiter.api.extension.TestTemplateInvocationContextProvider
+import java.util.stream.Stream
+import kotlin.test.assertEquals
+import kotlin.test.assertIs
+import kotlin.test.assertNotNull
+
+@ExtendWith(RobolectricExtension::class)
+class RobolectricExtensionTestTemplateSelfTest {
+
+    @TestTemplate
+    @ExtendWith(RobolectricTestTemplateInvocationContextProvider::class)
+    fun `Given a test extended with robolectric when call a test template then robolectric should be available`() {
+        testCallCount++
+        val application = assertDoesNotThrow { ApplicationProvider.getApplicationContext<Context>() }
+        assertNotNull(application)
+        assertIs<Application>(application, "application")
+    }
+
+    companion object {
+        private var testCallCount: Int = 0
+
+        @AfterAll
+        @Throws(Exception::class)
+        @JvmStatic
+        fun `Test template should be called as much as defined RobolectricTestTemplateInvocationContextProvider`() {
+            assertEquals(2, testCallCount)
+        }
+    }
+}
+
+private fun noOpTestTemplateInvocationContext(): TestTemplateInvocationContext =
+    object : TestTemplateInvocationContext {}
+
+private class RobolectricTestTemplateInvocationContextProvider : TestTemplateInvocationContextProvider {
+    override fun supportsTestTemplate(context: ExtensionContext): Boolean = true
+
+    override fun provideTestTemplateInvocationContexts(context: ExtensionContext): Stream<TestTemplateInvocationContext> {
+        return Stream.of(noOpTestTemplateInvocationContext(), noOpTestTemplateInvocationContext())
+    }
+}