common/device-side/bedstead/testapp/src/test/java/com/android/bedstead/testapp/TestAppTest.java

/*
 * Copyright (C) 2021 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.bedstead.testapp;

import static com.google.common.truth.Truth.assertThat;

import static org.testng.Assert.assertThrows;

import android.content.Context;
import android.os.UserHandle;

import com.android.bedstead.nene.TestApis;
import com.android.bedstead.nene.packages.Package;
import com.android.bedstead.nene.users.UserReference;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

import java.io.File;

@RunWith(JUnit4.class)
public class TestAppTest {
    private static final UserReference sUser = TestApis.users().instrumented();
    private static final UserHandle sUserHandle = sUser.userHandle();
    private static final UserReference sNonExistingUser = TestApis.users().find(9999);
    private static final UserHandle sNonExistingUserHandle = sNonExistingUser.userHandle();
    private static final Context sContext = TestApis.context().instrumentedContext();

    private TestAppProvider mTestAppProvider;

    @Before
    public void setup() {
        mTestAppProvider = new TestAppProvider();
    }

    @Test
    public void reference_returnsNeneReference() {
        TestApp testApp = mTestAppProvider.any();

        assertThat(testApp.reference()).isEqualTo(TestApis.packages().find(testApp.packageName()));
    }

    @Test
    public void resolve_returnsNenePackage() {
        TestApp testApp = mTestAppProvider.any();
        testApp.install(sUser);

        try {
            Package pkg = testApp.resolve();

            assertThat(pkg.packageName()).isEqualTo(testApp.packageName());
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_noUserSpecified_installsInInstrumentedUser() {
        TestApp testApp = mTestAppProvider.any();

        testApp.install();

        try {
            assertThat(testApp.resolve().installedOnUsers()).contains(sUser);
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_userReference_installs() {
        TestApp testApp = mTestAppProvider.any();

        testApp.install(sUser);

        try {
            assertThat(testApp.resolve().installedOnUsers()).contains(sUser);
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_userReference_returnsReferenceToInstance() {
        TestApp testApp = mTestAppProvider.any();

        try {
            TestAppInstanceReference testAppInstance = testApp.install(sUser);

            assertThat(testAppInstance.testApp()).isEqualTo(testApp);
            assertThat(testAppInstance.user()).isEqualTo(sUser);
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_userHandle_installs() {
        TestApp testApp = mTestAppProvider.any();

        testApp.install(sUserHandle);

        try {
            assertThat(testApp.resolve().installedOnUsers()).contains(sUser);
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_userHandle_returnsReferenceToInstance() {
        TestApp testApp = mTestAppProvider.any();

        try {
            TestAppInstanceReference testAppInstance = testApp.install(sUserHandle);

            assertThat(testAppInstance.testApp()).isEqualTo(testApp);
            assertThat(testAppInstance.user()).isEqualTo(sUser);
        } finally {
            testApp.uninstall(sUser);
        }
    }

    @Test
    public void install_nullUserReference_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.install((UserReference) null));
    }

    @Test
    public void install_nullUserHandle_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.install((UserHandle) null));
    }

    @Test
    public void instance_userHandle_instanceIsNotInstalled_stillReturnsInstance() {
        TestApp testApp = mTestAppProvider.any();

        TestAppInstanceReference testAppInstance = testApp.instance(sUserHandle);

        assertThat(testAppInstance.testApp()).isEqualTo(testApp);
        assertThat(testAppInstance.user()).isEqualTo(sUser);
    }

    @Test
    public void instance_userReference_instanceIsNotInstalled_stillReturnsInstance() {
        TestApp testApp = mTestAppProvider.any();

        TestAppInstanceReference testAppInstance = testApp.instance(sNonExistingUserHandle);

        assertThat(testAppInstance.testApp()).isEqualTo(testApp);
        assertThat(testAppInstance.user()).isEqualTo(sNonExistingUser);
    }

    @Test
    public void instance_userHandle_nonExistingUser_stillReturnsInstance() {
        TestApp testApp = mTestAppProvider.any();

        TestAppInstanceReference testAppInstance = testApp.instance(sUserHandle);

        assertThat(testAppInstance.testApp()).isEqualTo(testApp);
        assertThat(testAppInstance.user()).isEqualTo(sUser);
    }

    @Test
    public void instance_nullUserHandle_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.instance((UserHandle) null));
    }

    @Test
    public void instance_userReference_nonExistingUser_stillReturnsInstance() {
        TestApp testApp = mTestAppProvider.any();

        TestAppInstanceReference testAppInstance = testApp.instance(sNonExistingUser);

        assertThat(testAppInstance.testApp()).isEqualTo(testApp);
        assertThat(testAppInstance.user()).isEqualTo(sNonExistingUser);
    }

    @Test
    public void instance_nullUserReference_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.instance((UserReference) null));
    }

    @Test
    public void uninstall_nullUserReference_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.uninstall((UserReference) null));
    }

    @Test
    public void uninstall_nullUserHandle_throwsException() {
        TestApp testApp = mTestAppProvider.any();

        assertThrows(NullPointerException.class, () -> testApp.uninstall((UserHandle) null));
    }

    @Test
    public void uninstall_userReference_nonExistingUser_doesNothing() {
        TestApp testApp = mTestAppProvider.any();

        testApp.uninstall(sNonExistingUser);
    }

    @Test
    public void uninstall_userHandle_nonExistingUser_doesNothing() {
        TestApp testApp = mTestAppProvider.any();

        testApp.uninstall(sNonExistingUserHandle);
    }

    @Test
    public void uninstall_userReference_notInstalled_doesNothing() {
        TestApp testApp = mTestAppProvider.any();
        testApp.uninstall(sUser);

        testApp.uninstall(sUser);
    }

    @Test
    public void uninstall_userHandle_notInstalled_doesNothing() {
        TestApp testApp = mTestAppProvider.any();
        testApp.uninstall(sUser);

        testApp.uninstall(sUserHandle);
    }

    @Test
    public void uninstall_noUserSpecified_uninstallsFromInstrumentedUser() {
        TestApp testApp = mTestAppProvider.any();
        testApp.install(sUser);

        testApp.uninstall();

        Package testAppPackage = testApp.reference().resolve();
        if (testAppPackage != null) {
            assertThat(testAppPackage.installedOnUsers()).doesNotContain(sUser);
        }
    }

    @Test
    public void uninstall_userHandle_uninstalls() {
        TestApp testApp = mTestAppProvider.any();
        testApp.install(sUser);

        testApp.uninstall(sUserHandle);

        Package testAppPackage = testApp.reference().resolve();
        if (testAppPackage != null) {
            assertThat(testAppPackage.installedOnUsers()).doesNotContain(sUser);
        }
    }

    @Test
    public void uninstall_userReference_uninstalls() {
        TestApp testApp = mTestAppProvider.any();
        testApp.install(sUser);

        testApp.uninstall(sUser);

        Package testAppPackage = testApp.reference().resolve();
        if (testAppPackage != null) {
            assertThat(testAppPackage.installedOnUsers()).doesNotContain(sUser);
        }
    }

    @Test
    public void writeApkFile_writesFile() throws Exception {
        TestApp testApp = mTestAppProvider.any();
        File filesDir = sContext.getExternalFilesDir(/* type= */ null);
        File outputFile = new File(filesDir, "test.apk");
        outputFile.delete();

        testApp.writeApkFile(outputFile);

        try {
            assertThat(outputFile.exists()).isTrue();
        } finally {
            outputFile.delete();
        }
    }
}