package samples.powermockito.junit4.finalmocking;
import org.junit.Test;
import samples.finalmocking.FinalDemo;
import samples.privateandfinal.PrivateFinal;
import java.lang.reflect.Method;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Matchers.isA;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.powermock.api.mockito.PowerMockito.doThrow;
import static org.powermock.api.mockito.PowerMockito.mock;
import static org.powermock.api.mockito.PowerMockito.spy;
import static org.powermock.api.mockito.PowerMockito.verifyPrivate;
import static org.powermock.api.mockito.PowerMockito.when;
import static org.powermock.api.support.membermodification.MemberMatcher.method;
/**
* Cases to check mocking final non-static methods and final class
*/
public class MockFinalMethodsCases {
@Test
public void shouldMockFinalMethodWithNoExpectations() throws Exception {
final String argument = "hello";
FinalDemo tested = mock(FinalDemo.class);
assertThat(tested.say(argument)).isNull();
verify(tested).say(argument);
}
@Test
public void shouldMockFinalMethodWithExpectations() throws Exception {
final String argument = "hello";
final String expected = "Hello altered World";
FinalDemo tested = mock(FinalDemo.class);
when(tested.say(argument)).thenReturn(expected);
final String actual = tested.say(argument);
verify(tested).say(argument);
assertThat(actual).isEqualTo(expected);
}
@Test
public void shouldMockFinalNativeMethodWithExpectations() throws Exception {
final String expected = "Hello altered World";
final String argument = "hello";
FinalDemo tested = mock(FinalDemo.class);
when(tested.sayFinalNative(argument)).thenReturn("Hello altered World");
String actual = tested.sayFinalNative(argument);
verify(tested).sayFinalNative(argument);
assertThat(actual).isEqualTo(expected);
}
@Test
public void shouldSpyingOnFinalInstanceMethod() throws Exception {
FinalDemo tested = new FinalDemo();
FinalDemo spy = spy(tested);
final String argument = "PowerMock";
final String expected = "something";
assertThat(spy.say(argument)).isEqualTo("Hello " + argument);
when(spy.say(argument)).thenReturn(expected);
assertThat(spy.say(argument)).isEqualTo(expected);
}
@Test(expected = ArrayStoreException.class)
public void shouldSpyingOnFinalVoidInstanceMethod() throws Exception {
FinalDemo tested = new FinalDemo();
FinalDemo spy = spy(tested);
doThrow(new ArrayStoreException()).when(spy).finalVoidCallee();
spy.finalVoidCaller();
}
@Test
public void shouldSpyingOnPrivateFinalInstanceMethod() throws Exception {
PrivateFinal spy = spy(new PrivateFinal());
final String expected = "test";
assertThat(spy.say(expected)).isEqualTo("Hello " + expected);
when(spy, "sayIt", isA(String.class)).thenReturn(expected);
assertThat(spy.say(expected)).isEqualTo(expected);
verifyPrivate(spy, times(2)).invoke("sayIt", expected);
}
@Test
public void shouldSpyingOnPrivateFinalInstanceMethodWhenUsingJavaLangReflectMethod() throws Exception {
PrivateFinal spy = spy(new PrivateFinal());
final String expected = "test";
assertThat(spy.say(expected)).isEqualTo("Hello " + expected);
final Method methodToExpect = method(PrivateFinal.class, "sayIt");
when(spy, methodToExpect).withArguments(isA(String.class)).thenReturn(expected);
assertThat(spy.say(expected)).isEqualTo(expected);
verifyPrivate(spy, times(2)).invoke(methodToExpect).withArguments(expected);
}
}