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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.dx.mockito.tests;
import android.support.test.runner.AndroidJUnit4;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.exceptions.base.MockitoException;
import org.mockito.exceptions.verification.NoInteractionsWanted;
import java.util.ArrayList;
import java.util.Arrays;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.isNull;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verifyNoMoreInteractions;
import static org.mockito.Mockito.when;
@RunWith(AndroidJUnit4.class)
public class GeneralMocking {
public static class TestClass {
public String returnA() {
return "A";
}
public String throwThrowable() throws Throwable {
throw new Throwable();
}
public String throwOutOfMemoryError() throws OutOfMemoryError {
throw new OutOfMemoryError();
}
public void throwNullPointerException() {
throw new NullPointerException();
}
public String concat(String a, String b) {
return a + b;
}
}
public static class TestSubClass extends TestClass {
}
public interface TestInterface {
String returnA();
String concat(String a, String b);
}
@Test
public void mockClass() throws Exception {
TestClass t = mock(TestClass.class);
assertNull(t.returnA());
when(t.returnA()).thenReturn("B");
assertEquals("B", t.returnA());
}
@Test
public void mockInterface() throws Exception {
TestInterface t = mock(TestInterface.class);
assertNull(t.returnA());
when(t.returnA()).thenReturn("B");
assertEquals("B", t.returnA());
}
@Test
public void spyClass() throws Exception {
TestClass originalT = new TestClass();
TestClass t = spy(originalT);
assertEquals("A", t.returnA());
when(t.returnA()).thenReturn("B");
assertEquals("B", t.returnA());
// Wrapped object is not affected by mocking
assertEquals("A", originalT.returnA());
}
@Test
public void spyNewClass() throws Exception {
TestClass t = spy(TestClass.class);
assertEquals("A", t.returnA());
when(t.returnA()).thenReturn("B");
assertEquals("B", t.returnA());
}
@Test
public void verifyAdditionalInvocations() {
TestClass t = mock(TestClass.class);
t.returnA();
t.returnA();
try {
verifyNoMoreInteractions(t);
} catch (NoInteractionsWanted e) {
try {
throw new Exception();
} catch (Exception here) {
// The error message should indicate where the additional invocations have been made
assertTrue(e.getMessage(),
e.getMessage().contains(here.getStackTrace()[0].getMethodName()));
}
}
}
@Test
public void spyThrowingMethod() throws Exception {
TestClass t = spy(TestClass.class);
try {
t.throwThrowable();
} catch (Throwable e) {
assertEquals("throwThrowable", e.getStackTrace()[0].getMethodName());
return;
}
fail();
}
@Test()
public void spyErrorMethod() throws Exception {
TestClass t = spy(TestClass.class);
try {
t.throwOutOfMemoryError();
fail();
} catch (OutOfMemoryError e) {
assertEquals("throwOutOfMemoryError", e.getStackTrace()[0].getMethodName());
}
}
@Test()
public void spyExceptingMethod() throws Exception {
TestClass t = spy(TestClass.class);
try {
t.throwNullPointerException();
fail();
} catch (NullPointerException e) {
assertEquals("throwNullPointerException", e.getStackTrace()[0].getMethodName());
}
}
@Test
public void callAbstractRealMethod() throws Exception {
TestInterface t = mock(TestInterface.class);
try {
when(t.returnA()).thenCallRealMethod();
} catch (MockitoException e) {
assertEquals("callAbstractRealMethod", e.getStackTrace()[0].getMethodName());
}
}
@Test
public void callInterfaceWithoutMatcher() throws Exception {
TestInterface t = mock(TestInterface.class);
when(t.concat("a", "b")).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertNull(t.concat("b", "a"));
}
@Test
public void callInterfaceWithMatcher() throws Exception {
TestInterface t = mock(TestInterface.class);
when(t.concat(eq("a"), anyString())).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertNull(t.concat("b", "a"));
}
@Test
public void callInterfaceWithNullMatcher() throws Exception {
TestInterface t = mock(TestInterface.class);
when(t.concat(eq("a"), (String) isNull())).thenReturn("match");
assertEquals("match", t.concat("a", null));
assertNull(t.concat("a", "b"));
}
@Test
public void callClassWithoutMatcher() throws Exception {
TestClass t = spy(TestClass.class);
when(t.concat("a", "b")).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertEquals("ba", t.concat("b", "a"));
}
@Test
public void callClassWithMatcher() throws Exception {
TestClass t = spy(TestClass.class);
when(t.concat(eq("a"), anyString())).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertEquals("ba", t.concat("b", "a"));
}
@Test
public void callClassWithNullMatcher() throws Exception {
TestClass t = spy(TestClass.class);
when(t.concat(eq("a"), (String) isNull())).thenReturn("match");
assertEquals("match", t.concat("a", null));
assertEquals("ab", t.concat("a", "b"));
}
@Test
public void callSubClassWithoutMatcher() throws Exception {
TestSubClass t = spy(TestSubClass.class);
when(t.concat("a", "b")).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertEquals("ba", t.concat("b", "a"));
}
@Test
public void callSubClassWithMatcher() throws Exception {
TestSubClass t = spy(TestSubClass.class);
when(t.concat(eq("a"), anyString())).thenReturn("match");
assertEquals("match", t.concat("a", "b"));
assertEquals("ba", t.concat("b", "a"));
}
@Test
public void callSubClassWithNullMatcher() throws Exception {
TestSubClass t = spy(TestSubClass.class);
when(t.concat(eq("a"), (String) isNull())).thenReturn("match");
assertEquals("match", t.concat("a", null));
assertEquals("ab", t.concat("a", "b"));
}
}
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