无法使用 minifyEnabled 运行 Android 仪表化 (UI) 测试

Question

minifyEnabled目前，我的 UI 测试在调试版本设置为 false 时运行良好。然而，我希望能够使用 minifyEnabled 运行我们的 UI 测试，但我收到错误：

java.lang.NoClassDefFoundError: Failed resolution of: Lkotlin/LazyKt;
at com.myapp.android.helpers.BaseUITest.<init>(BaseUITest.kt:89)
at com.myapp.android.helpers.BaseLoggedInUITest.<init>(BaseUITest.kt:58)
at com.myapp.android.BookingTest.<init>(BookingTest.kt:25)
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217)
at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:392)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2189)
Caused by: java.lang.ClassNotFoundException: Didn't find class "kotlin.LazyKt" on path: DexPathList[[zip file "/system/framework/android.test.runner.jar", zip file "/system/framework/android.test.mock.jar", zip file "/data/app/com.myapp.android.test-9ynAvfUfqJ1OtJ0zKiGLQw==/base.apk", zip file "/data/app/com.myapp.android-jo1Vp8gfqma6NGH5xtf4nw==/base.apk"],nativeLibraryDirectories=[/data/app/com.myapp.android.test-9ynAvfUfqJ1OtJ0zKiGLQw==/lib/x86, /data/app/com.myapp.android-jo1Vp8gfqma6NGH5xtf4nw==/lib/x86, /data/app/com.myapp.android.test-9ynAvfUfqJ1OtJ0zKiGLQw==/base.apk!/lib/x86, /data/app/com.myapp.android-jo1Vp8gfqma6NGH5xtf4nw==/base.apk!/lib/x86, /system/lib, /system/product/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:196)

有问题的行只是 BaseUiTest 类中使用 Koin 进行依赖注入的第一行：

private val localPrefs: LocalPrefs by inject()

build.gradle 文件如下所示：

buildTypes {
  debug {
    minifyEnabled true
    proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    testProguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-test.pro'
  }
}

我已经为该proguard-test.pro文件尝试了所有我能想到的方法，包括：

-include proguard-rules.pro
-dontobfuscate
-dontwarn
-keepattributes SourceFile,LineNumberTable

我不明白为什么它无法解析 Kotlin 类LazyKt

Answer 1

当我也尝试在启用缩小功能的情况下运行 UI 测试时，我遇到了一个非常类似的问题。我的堆栈跟踪如下所示：

java.lang.NoClassDefFoundError: Failed resolution of: Lkotlin/LazyKt;
    at androidx.test.platform.io.OutputDirCalculator.<init>(OutputDirCalculator.kt:27)
    at androidx.test.platform.io.FileTestStorage.<init>(FileTestStorage.java:45)
    at androidx.test.runner.AndroidJUnitRunner.registerTestStorage(AndroidJUnitRunner.java:664)
    at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:441)
    at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2361)
Caused by: java.lang.ClassNotFoundException: Didn't find class "kotlin.LazyKt" on path: DexPathList[[zip file "/system/framework/android.test.runner.jar", zip file "/system/framework/android.test.mock.jar", zip file "/system/framework/android.test.base.jar", ...]]

解决方案是将以下行添加到 proguard 配置文件中：

-keep public class kotlin.**