多次运行浓缩咖啡测试

有时我遇到了我的应用程序中的罕见错误。 但是我不能重现它，因为它非常罕见。 所以，我决定写简单的咖啡测试：

@RunWith(AndroidJUnit4::class) @LargeTest class MainActivityTest { val password = "1234" @Rule @JvmField var mActivityRule: ActivityTestRule<MainActivity> = ActivityTestRule(MainActivity::class.java) @Test fun checkNotesListNotEmpty() { onView(withId(R.id.password_edit_text)).perform(typeText(password)) onView(withId(R.id.notes_recycler_view)).check { view, noMatchingViewException -> if (noMatchingViewException != null) throw noMatchingViewException assertThat((view as RecyclerView).adapter.itemCount, Matchers.`is`(1)) } } } 

如何循环测试并在匹配失败时停止测试？

Answer 1

使用@Repeat注释：

 @Test @Repeat(100) fun checkNotesListNotEmpty() { } 

但是你必须自己实现它：

Repeat.java：

 import static java.lang.annotation.ElementType.ANNOTATION_TYPE; import static java.lang.annotation.ElementType.METHOD; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; @Retention( RetentionPolicy.RUNTIME ) @Target({ METHOD, ANNOTATION_TYPE }) public @interface Repeat { int value() default 1; } 

RepeatRule.java：

 import org.junit.rules.TestRule; import org.junit.runner.Description; import org.junit.runners.model.Statement; public class RepeatRule implements TestRule { private static class RepeatStatement extends Statement { private final Statement statement; private final int repeat; public RepeatStatement(Statement statement, int repeat) { this.statement = statement; this.repeat = repeat; } @Override public void evaluate() throws Throwable { for (int i = 0; i < repeat; i++) { statement.evaluate(); } } } @Override public Statement apply(Statement statement, Description description) { Statement result = statement; Repeat repeat = description.getAnnotation(Repeat.class); if (repeat != null) { int times = repeat.value(); result = new RepeatStatement(statement, times); } return result; } } 

Answer 2

你不能有一个单独的测试循环那个？ （如果是独一无二的情况）：

 @RunWith(AndroidJUnit4::class) @LargeTest class MainActivityTest { ... @Test fun checkNotesListNotEmpty() {...} @Test fun loopCheckNotesListNotEmpty() { while(true) checkNotesListNotEmpty() } } 

Answer 3

Kotlin的@mklimek提出的解决方案。

如何使用：

 @Rule @JvmField var repeatRule: RepeatRule = RepeatRule() @Test @RepeatTest(100) fun checkNotesListNotEmpty() { 

RepeatRule.kt

 class RepeatRule : TestRule { private class RepeatStatement(private val statement: Statement, private val repeat: Int) : Statement() { @Throws(Throwable::class) override fun evaluate() { for (i in 0..repeat - 1) { statement.evaluate() } } } override fun apply(statement: Statement, description: Description): Statement { var result = statement val repeat = description.getAnnotation(RepeatTest::class.java) if (repeat != null) { val times = repeat.value result = RepeatStatement(statement, times) } return result } } 

RepeatTest.kt

 @Retention(AnnotationRetention.RUNTIME) @Target(AnnotationTarget.FUNCTION, AnnotationTarget.ANNOTATION_CLASS) annotation class RepeatTest(val value: Int = 1) 

Answer 4

Android Studio允许您运行N次测试或运行，直到失败。 点击您的测试规则的“编辑配置”，并搜索“重复：”设置。