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path: root/firebase/testlab/testlab-gradle-plugin/src/test/java/com/android/tools/firebase/testlab/gradle/TestLabGradlePluginTest.kt
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/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.tools.firebase.testlab.gradle

import com.android.build.api.AndroidPluginVersion
import com.android.build.api.dsl.CommonExtension
import com.android.build.api.variant.AndroidComponentsExtension
import com.android.build.gradle.api.AndroidBasePlugin
import com.android.testutils.MockitoKt.argumentCaptor
import com.android.testutils.MockitoKt.capture
import com.android.testutils.MockitoKt.eq
import com.google.common.truth.Truth.assertThat
import com.google.firebase.testlab.gradle.TestLabGradlePluginExtension
import org.gradle.api.Action
import org.gradle.api.Project
import org.junit.Assert.assertThrows
import org.junit.Before
import org.junit.Rule
import org.junit.Test
import org.mockito.Answers
import org.mockito.Mock
import org.mockito.Mockito.atLeastOnce
import org.mockito.Mockito.verify
import org.mockito.Mockito.`when`
import org.mockito.junit.MockitoJUnit
import org.mockito.junit.MockitoRule

/**
 * Unit tests for [TestLabGradlePlugin]
 */
class TestLabGradlePluginTest {

    @get:Rule
    val mockitoJUnitRule: MockitoRule = MockitoJUnit.rule()

    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    lateinit var mockProject: Project

    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    lateinit var mockAndroidPlugin: AndroidComponentsExtension<*, *, *>

    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    lateinit var mockCommonExtension: CommonExtension<*, *, *, *, *>

    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
    lateinit var mockTestLabExtension: TestLabGradlePluginExtension

    @Before
    fun setupMocks() {
        `when`(mockProject.extensions.getByType(eq(AndroidComponentsExtension::class.java))).thenReturn(mockAndroidPlugin)
        `when`(mockProject.extensions.getByType(eq(CommonExtension::class.java))).thenReturn(mockCommonExtension)
        `when`(mockProject.extensions.getByType(eq(TestLabGradlePluginExtension::class.java))).thenReturn(mockTestLabExtension)
    }

    private fun applyFtlPlugin(
            agpVersion: AndroidPluginVersion = AndroidPluginVersion(8, 1)) {
        `when`(mockAndroidPlugin.pluginVersion).thenReturn(agpVersion)

        val plugin = TestLabGradlePlugin()
        plugin.apply(mockProject)

        val captor = argumentCaptor<Action<AndroidBasePlugin>>()
        verify(mockProject.plugins, atLeastOnce())
                .withType(eq(AndroidBasePlugin::class.java), capture(captor))

        captor.value.execute(AndroidBasePlugin())
    }

    @Test
    fun agpVersionCheck() {
        val unsupportedVersionsTooOld = listOf(
                AndroidPluginVersion(8, 1, 0).alpha(8),
        )
        val supportedVersions = listOf(
                AndroidPluginVersion(8, 1, 0).alpha(9),
                AndroidPluginVersion(8, 1),
                AndroidPluginVersion(8, 2),
                AndroidPluginVersion(8, 3, 0).dev(),
        )
        val unsupportedVersionsTooRecent = listOf(
                AndroidPluginVersion(8, 3, 0).alpha(1),
                AndroidPluginVersion(8, 3, 0),
        )

        unsupportedVersionsTooOld.forEach {
            val e = assertThrows(IllegalStateException::class.java) {
                applyFtlPlugin(it)
            }
            assertThat(e).hasMessageThat()
                    .contains("Android Gradle plugin version 8.1.0-alpha09 or higher is required.")
        }

        supportedVersions.forEach {
            applyFtlPlugin(it)
        }

        unsupportedVersionsTooRecent.forEach {
            val e = assertThrows(IllegalStateException::class.java) {
                applyFtlPlugin(it)
            }
            assertThat(e).hasMessageThat().contains("It requires Android Gradle plugin version 8.2.0.")
        }
    }
}