小编Kam*_*ryn的帖子

我正在使用PowerMock编写单元测试,模拟一些util类的行为.为测试类定义一次行为(通过@BeforeClass注释)会导致:

• 第一次测试调用以返回模拟值
• 第二次测试调用返回实际方法返回值

示例代码:

import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest( {A.class, B.class})
public class TestMockedMethods {

private static B b;

@BeforeClass
public static void setUp() {
    PowerMockito.mockStatic(A.class);
    PowerMockito.when(A.getVal()).thenReturn("X");

    b = PowerMockito.mock(B.class);
    PowerMockito.when(b.getVal()).thenReturn("Y");
}

@Test
public void test1() { // PASS
    Assert.assertEquals("X", A.getVal());
    Assert.assertEquals("Y", b.getVal());
}

@Test
public void test2() { // FAIL
    Assert.assertEquals("X", A.getVal()); // actual="A"
    Assert.assertEquals("Y", b.getVal()); // actual="B"
}

}
class A {
  static String getVal() {
    return …

我正在尝试使用Espresso-2.2测试我的应用行为

在主要活动上,当按下按钮时,服务和另一个活动正在启动:

public class MainActivity extends Activity {

    public void onButtonClicked() {
        startActivity(SecondActivity.getStartIntent());
        startService(MyIntentService.getStartIntent());
    }
}

我正在测试是否正在启动预期的组件:

public class MainActivityTest {
    @Rule
    public final IntentsTestRule<MainActivity> intentsRule = new IntentsTestRule<>(MainActivity.class, true);

    @Test
    public void shouldStartServiceOnButtonClicked() {
        onView(withId(R.id.button)).perform(click());
        intended(hasComponent(hasClassName(SecondActivity.class.getName())));
        intended(hasComponent(hasClassName(MyIntentService.class.getName())));
    }
}

但是我收到了错误:

Caused by: junit.framework.AssertionFailedError: Wanted to match 1 intents. Actually matched 0 intents.

IntentMatcher: has component: has component with: class name: is "com.example.MyIntentService" package name: an instance of java.lang.String short class name: an instance of java.lang.String

Matched intents:[]

Recorded intents: …

我想测试B类:

class B : A {
    override fun init() {
        // do work here
    }
}

class A {
    protected fun init() { } // will be called by internal logic
}

并且在Java中调用没有问题:b.init()在测试方法中(测试类与测试对象在同一个包中),但在Kotlin编译器中抱怨:

无法访问'init':它在'B'中受到保护

@Test
fun `checks init`() {
    val b = B()
    b.init()
    // assert work done
}

为什么不工作？如何解决此问题(我想避免将方法公开)？

执行声明

true || true ? false : true

回报false.

不应该是真的,因为OR条件不会执行三元运算(右侧部分)？