Question

有时我在申请中遇到了罕见的错误。但我无法重现它，因为它非常罕见。所以，我决定写简单的浓咖啡测试：

    private FlowDocument GenerateDocument(string path)
    {
        var doc = new FlowDocument();
        using (FileStream fs = File.Open(path, FileMode.Open, FileAccess.Read))
        {
            var content = new TextRange(doc.ContentStart, doc.ContentEnd);
            content.Load(fs, DataFormats.Rtf);
        }
        return doc;
    }

如何在匹配失败时循环此测试并停止它？

Answer 1

使用@Repeat注释：

@RunWith(AndroidJUnit4.class)
public class MyTest {

    @Rule
    public RepeatRule repeatRule = new RepeatRule();

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

但你必须自己实现它：

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

@mklimek在Kotlin提出的解决方案。

使用方法：

@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 3

你不能有一个单独的测试循环那个吗？（如果它是一种独一无二的情况）：

@RunWith(AndroidJUnit4::class)
@LargeTest
class MainActivityTest {
    ...

    @Test fun checkNotesListNotEmpty() {...}

    @Test fun loopCheckNotesListNotEmpty() {
        while(true)
            checkNotesListNotEmpty()
    }
}

Answer 4

Android Studio允许您运行测试N次或运行直到失败。点击＆＃34;编辑配置＆＃34;为您的测试规则并搜索＆＃34;重复：＆＃34;设置。

Screenshot

Answer 5

我遇到了同样的问题，因此，我创建了一个库来多次运行测试：https://github.com/stepstone-tech/AndroidTestXRunner

一旦运行它，就可以检查测试结果是否有任何故障。

多次运行espresso测试

5 个答案: