使用Firebase在Library模块中进行Android仪器化测试

Question

我的项目结构如下：

project
  ∟ app // apply `google-services` and `firebase-crashlytics` plugins here
    ∟ google-services.json
  ∟ lib1 // including Firebase SDK, and Firebase related operations here
  ∟ lib2

在正常运行应用程序时，它表现良好。但是当我在lib1中运行androidTest时，我遇到了以下异常：

Fatal Exception: java.lang.IllegalStateException: Default FirebaseApp is not initialized in this XXX. Make sure to call FirebaseApp.initializeApp(Context) first.

我尝试通过在/androidTest/values/res/ 中放置一个带有google-services相关配置的strings.xml文件来解决它。

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <! -- Present in all applications -->
    <string name="google_app_id" translatable="false">client_info/mobilesdk_app_id</string>

    <! -- Present in applications with the appropriate services configured -->
    <string name="gcm_defaultSenderId" translatable="false">${project_info/project_number}</string>
    <string name="default_web_client_id" translatable="false">${oauth_client/client_id}</string>
    <string name="ga_trackingId" translatable="false">${analytics_property/tracking_id}</string>
    <string name="firebase_database_url" translatable="false">${project_info/firebase_url}</string>
    <string name="google_api_key" translatable="false">${api_key/current_key}</string>
    <string name="google_crash_reporting_api_key" translatable="false">${api_key/current_key}</string>
    <string name="project_id" translatable="false">${project_info/project_id}</string>

</resources>

然而，我遇到了另一个问题

java.lang.RuntimeException: Unable to get provider com.google.firebase.provider.FirebaseInitProvider: java.lang.IllegalStateException: The Crashlytics build ID is missing. This occurs when Crashlytics tooling is absent from your app's build configuration. Please review Crashlytics onboarding instructions and ensure you have a valid Crashlytics account.

我曾尝试在lib1模块中应用firebase-crashlytics插件，但出现了错误。

Caused by: org.gradle.api.GradleException: Applying the Firebase Crashlytics plugin to a library project is unsupported. It should only be applied to the application module of your project to enable automatic upload of obfuscation mapping files for your application.

所以我必须保留firebase-crashlytics插件在app模块中。

然后我尝试将测试移动到app模块中，但是遇到了另一个错误。

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/test/internal/runner/tracker/UsageTrackerRegistry;
        at androidx.test.espresso.GraphHolder.baseLayer(GraphHolder.java:9)
        at androidx.test.espresso.Espresso.<clinit>(Espresso.java:2)
        at androidx.test.espresso.Espresso.onView(Espresso.java:38)

欢迎任何帮助。谢谢。

- Z.J Hung

Answer 1

从该模块的仪器化测试中完全删除 Firebase 依赖项，方法是将以下内容添加到您的 build.gradle 文件中：

configurations {
    androidTestImplementation {
        exclude group: 'com.google.firebase', module: 'firebase-perf'
    }
}

这样就不会再抱怨了，因为 Firebase 不在测试中，如果您已经正确地使用 DI 或使用测试替身替换了存储库或数据源，则不应运行该代码。

- jeprubio