小编J. *_*nen的帖子

我正在将我的应用程序迁移到androidx,我似乎无法让我的单元测试工作.我从Google的AndroidJunitRunnerSample中获取了示例,该示例已更新为使用新的androidx api.尝试运行测试时出现以下错误:

java.lang.Exception: Delegate runner 'androidx.test.internal.runner.junit4.AndroidJUnit4ClassRunner' for AndroidJUnit4 could not be loaded. Check your build configuration.

这是我的模块build.gradle:

android {
    defaultConfig {
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
}
dependencies {
    // Test dependencies
    androidTestImplementation 'androidx.test:core:1.0.0-beta02'
    androidTestImplementation 'androidx.test.ext:junit:1.0.0-beta02'
    androidTestImplementation 'androidx.test:runner:1.1.0-beta02'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-beta02'
    androidTestImplementation "androidx.arch.core:core-testing:2.0.0"
    androidTestImplementation 'androidx.room:room-testing:2.1.0-alpha01'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-beta02'
    androidTestImplementation 'org.hamcrest:hamcrest-library:1.3'
}

以下是我的测试结构:

import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;

import androidx.test.ext.junit.runners.AndroidJUnit4;

@RunWith(AndroidJUnit4.class)
public class EntityParcelTest {

    @BeforeClass
    public void createEntities() {
        // Setup...
    }

    @Test
    void someTest() {
        // Testing here
    }

我究竟做错了什么？

就像标题所说的那样，当我尝试测试数据库迁移时，我得到了这个SQLiteException。这是完整的错误：

android.database.sqlite.SQLiteException: no such table: alarmInfo (code 1): , while compiling: INSERT INTO SystemIdInfo(work_spec_id, system_id) SELECT work_spec_id, alarm_id AS system_id FROM alarmInfo
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:905)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:516)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.executeSql(SQLiteDatabase.java:1703)
at android.database.sqlite.SQLiteDatabase.execSQL(SQLiteDatabase.java:1633)
at androidx.sqlite.db.framework.FrameworkSQLiteDatabase.execSQL(FrameworkSQLiteDatabase.java:242)
at androidx.work.impl.WorkDatabaseMigrations$1.migrate(WorkDatabaseMigrations.java:83)
at androidx.room.RoomOpenHelper.onUpgrade(RoomOpenHelper.java:87)
at androidx.sqlite.db.framework.FrameworkSQLiteOpenHelper$OpenHelper.onUpgrade(FrameworkSQLiteOpenHelper.java:133)
at android.database.sqlite.SQLiteOpenHelper.getDatabaseLocked(SQLiteOpenHelper.java:299)
at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:194)
at androidx.sqlite.db.framework.FrameworkSQLiteOpenHelper$OpenHelper.getWritableSupportDatabase(FrameworkSQLiteOpenHelper.java:96)
at androidx.sqlite.db.framework.FrameworkSQLiteOpenHelper.getWritableDatabase(FrameworkSQLiteOpenHelper.java:54)
at androidx.room.testing.MigrationTestHelper.openDatabase(MigrationTestHelper.java:238)
at androidx.room.testing.MigrationTestHelper.runMigrationsAndValidate(MigrationTestHelper.java:228)
at com.github.jnuutinen.functional.unit.DatabaseMigrationTest.migrate1To2(DatabaseMigrationTest.kt:36)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) …