使用自定义选项卡的 Espresso 测试 OAuth2.0 失败

Question

我正在尝试通过 android 自定义选项卡为 oauth2.0 登录编写 espresso 测试。完成登录后，它通过深层链接返回到应用程序。但是测试没有通过。我可以看到一切都很好，但是当 activityScenarioTestRule 试图关闭它抛出的环境时

NullPointerException

。这是我来自测试的堆栈跟踪

java.lang.NullPointerException: Current state was null unexpectedly. Last stage = STARTED
at androidx.test.internal.util.Checks.checkNotNull(Checks.java:45)
at androidx.test.core.app.ActivityScenario.moveToState(ActivityScenario.java:652)
at androidx.test.core.app.ActivityScenario.close(ActivityScenario.java:416)
at androidx.test.ext.junit.rules.ActivityScenarioRule.after(ActivityScenarioRule.java:114)
at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:59)
at androidx.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(GrantPermissionRule.java:136)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:67)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:446)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2361)

我假设测试无法关闭自定义选项卡。所以我试着添加

customTabsIntent.intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY)

但这并没有帮助。