我有一门课如下:
public class A {
public A(String test) {
bla bla bla
}
public String check() {
bla bla bla
}
}
构造函数 A(String test)
和 check()
中的逻辑是我试图模拟的东西。我想要任何调用,例如: new A($$$any string$$$).check()
返回一个虚拟字符串 "test"
.
我试过了:
A a = mock(A.class);
when(a.check()).thenReturn("test");
String test = a.check(); // to this point, everything works. test shows as "tests"
whenNew(A.class).withArguments(Matchers.anyString()).thenReturn(rk);
// also tried:
//whenNew(A.class).withParameterTypes(String.class).withArguments(Matchers.anyString()).thenReturn(rk);
new A("random string").check(); // this doesn't work
但它似乎不起作用。 new A($$$any string$$$).check()
仍在执行构造函数逻辑,而不是获取 A
的模拟对象。
最佳答案
您发布的代码适用于我最新版本的 Mockito 和 Powermockito。也许你还没有准备好A? 试试这个:
A.java
public class A {
private final String test;
public A(String test) {
this.test = test;
}
public String check() {
return "checked " + this.test;
}
}
MockA.java
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mockito;
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)
public class MockA {
@Test
public void test_not_mocked() throws Throwable {
assertThat(new A("random string").check(), equalTo("checked random string"));
}
@Test
public void test_mocked() throws Throwable {
A a = mock(A.class);
when(a.check()).thenReturn("test");
PowerMockito.whenNew(A.class).withArguments(Mockito.anyString()).thenReturn(a);
assertThat(new A("random string").check(), equalTo("test"));
}
}
这两个测试都应该通过 mockito 1.9.0、powermockito 1.4.12 和 junit 4.8.2
关于java - 模拟带参数的构造函数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13364406/