在 Android 中模拟

Question

我正在尝试在 Android 应用程序中测试 KeyguardManager 类的 isKeyguardSecure() 方法。

我尝试使用EasyMock、Mockito 和PowerMock 创建模拟KeyguardManager 对象，但失败了。以下是我的尝试和收到的错误消息。

---

EasyMock

KeyguardManager keyguardManagerMock = EasyMock.createMock(KeyguardManager.class);

错误信息：java.lang.IllegalArgumentException: android.app.KeyguardManager is not an interface

---

Mockito 和 PowerMock

KeyguardManager mockedKeyguardManager = Mockito.mock(KeyguardManager.class); KeyguardManager mockedKeyguardManager = PowerMockito.mock(KeyguardManager.class);

错误消息：java.lang.VerifyError: mockit/internal/startup/Startup java.lang.VerifyError: org/mockito/cglib/core/ReflectUtils

---

One explanation for this 指出根本问题在于 Android 设备运行的 Dalvik 虚拟机。任何人都可以验证这一点吗？是否可以使用任何可用于测试 Android 应用的可用模拟库来模拟 KeyguardManager 类？

谢谢！

Answer 1

您的 EasyMock 版本太旧。 PowerMock 不是必需的。使用 EasyMock 3.4，我做了以下工作，效果很好：

public static void main(String[] args) {
    KeyguardManager manager = createMock(KeyguardManager.class);
    expect(manager.isKeyguardSecure()).andReturn(true);
    replay(manager);
    assertTrue(manager.isKeyguardSecure());
    verify(manager);
}

Answer 2

将 PowerMock 与 EasyMock 结合使用。

依赖关系：

testCompile 'junit:junit:4.12'
testCompile 'org.easymock:easymock:3.3.1'
testCompile 'org.powermock:powermock-core:1.6.2'
testCompile 'org.powermock:powermock-api-easymock:1.6.2'
testCompile 'org.powermock:powermock-module-junit4:1.6.2'

示例代码：

package com.example.user.exampleapp;

import android.app.KeyguardManager;

import org.easymock.EasyMock;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.easymock.PowerMock;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest(KeyguardManager.class)
public class KeyguardTest {

    @Test
    public void testKeyguard() {
        KeyguardManager keyguardMock = PowerMock.createMock(KeyguardManager.class);
        EasyMock.expect(keyguardMock.isKeyguardSecure()).andReturn(false);
        PowerMock.replayAll();
        System.out.println("is locked " + keyguardMock.isKeyguardSecure());
        PowerMock.verifyAll();
    }
}

输出：

is locked false