当突变应该使用具有自动注入场的方法时,突变未被杀死
2022-09-04 23:33:15
我有以下几点:
public class UnsetProperty extends Command {
@Resource
private SetProperty setProperty;
public String parse(String[] args) {
if (args.length != 4) {
throw new RuntimeException("Incorrect number of arguments. Expected 4. Got " + args.length);
}
String publisher = args[0];
String version = args[1];
String mode = args[2];
String property = args[3];
/*
* Unsetting a property is done by changing the current property to null.
* Technically, the old property doesn't get changed, a new one is inserted with
* a higher revision number, and it becomes the canonical one.
*/
setProperty.setProperty(publisher, version, mode, property, null, false);
return "";
}
}
和以下测试:
public class UnsetPropertyTest extends CommandTest {
@Configuration
public static class Config {
@Bean(name = "mockSetProperty")
public SetProperty getSetProperty() {
return mock(SetProperty.class);
}
@Bean
public UnsetProperty getUnsetProperty() {
return new UnsetProperty();
}
}
@Resource
@InjectMocks
private UnsetProperty unsetProperty;
@Resource(name = "mockSetProperty")
private SetProperty setProperty;
// ... SNIP ...
@Test
public void testCallsSetPropertyWithCorrectParameters() throws SQLException, TaboolaException {
final String[] args = new String[]{"publisher", "version", "mode", "property"};
final String output = unsetProperty.parse(args);
verify(setProperty).setProperty("publisher", "version", "mode", "property", null, false);
// The above line should have killed the mutation!
verifyNoMoreInteractions(setProperty);
assertThat(output).isEqualTo("");
}
}
测试按预期通过。当我通过PIT运行它时,我得到以下结果
33 1. removed call to my/package/SetProperty::setProperty → SURVIVED
第 33 行在类代码中突出显示。
检查的测试如下:
-
my.package.UnsetPropertyTest.testCallsSetPropertyWithCorrectParameters(my.package.UnsetPropertyTest)
(32毫秒) -
my.package.UnsetPropertyTest.testUnsetThrowsForIncorrectNumberOfParameters(my.package.UnsetPropertyTest)
(3 毫秒)
现在:
- 当我更改测试调用参数()时,测试失败。不出所料
args
- 当我更改断言 () 参数时,测试失败。不出所料。
verify(setProperty).setProperty(...)
- 当我手动注释掉第一个代码块中突出显示的函数调用时,测试失败。
为什么突变会存活下来?
我使用的是Java 8,Mockito 1.9.5和PIT 1.1.4。