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问题描述
我需要在我的测试类的父类中模拟一个受保护的方法,但父类位于不同的包中,因此我的测试类无法访问该方法,因此我无法模拟它.这个问题必须有一个无需重构的解决方案
I need to mock a protected method in the parent class of my class under test but the parent class is in a different package so my test class cannot access that method so I cannot mock it. There's gotta be a solution for this issue without refactoring
我需要使用 Powermock 和 Mockito.这是 JAR
I need to use Powermock and Mockito. Here's the JARs
- mockito-all 1.10.8
- powermock-core 1.6.1
- powermock-module-junit4 1.6.1
- powermock-api-mockito 1.6.1
- junit 4.12
这是遗留代码,所以我无法重构,但这是简化的代码.
This is legacy code so I cannot refactor, but here's the simplified code.
Parent.java
package parent; public class Parent { // Want to mock this protected parent method from different package protected String foo() { String someValue = null; // Logic setting someValue return someValue; } }Child.java
package child; import parent.Parent; public class Child extends Parent { String fooString = null; public String boo() { this.fooString = this.foo(); String booString = null; // Logic setting booString return booString; } }ChildTest.java
package child; import static org.mockito.Mockito.spy; import org.junit.Assert; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.junit4.PowerMockRunner; import parent.Parent; @RunWith(PowerMockRunner.class) @PrepareForTest({ Parent.class, Child.class }) public class ChildTest { // Class Under Test Child cut; @Before public void setUp() throws Exception { // Partial mock to mock methods in parent class cut = spy(new Child()); } @Test public void testBoo() { // TODO: Need to mock cut.foo() but can't figure out how. // Following gives me this error: The method foo() from the type Parent is not visible Mockito.when(((Parent)cut).foo()).thenReturn("mockValue"); // Test cut.boo(); // Validations Assert.assertEquals(cut.fooString, "mockValue"); } } 推荐答案你可以使用 PowerMock 来模拟没有公共方法.
You can use PowerMock to mocking no public method.
@RunWith(PowerMockRunner.class) public class ChildTest { @Test public void testBoo() throws Exception { //given Child child = PowerMockito.spy(new Child()); PowerMockito.when(child, "foo").thenReturn("mockValue"); //when String boo = child.boo(); //then Assert.assertEquals("boo+mockValue", boo); } }更多推荐
当父级在不同的包中时模拟受保护的父级方法
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