/*
* Created on Sep 27, 2013
*
* 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.
*
* Copyright @2010-2013 the original author or authors.
*/
package org.assertj.core.util.introspection;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.test.ExpectedException.none;
import org.assertj.core.test.ExpectedException;
import org.assertj.core.test.Person;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
/**
* Tests for <code>{@link MethodSupport#methodResultFor(Object, String)}</code>.
*
* @author Michał Piotrkowski
*/
public class MethodSupport_methodResultFor_Test {
@Rule
public ExpectedException thrown = none();
private Person bruceWayne;
private Person joker;
private SuperHero batman;
@Before
public void setUp() {
bruceWayne = new Person("Bruce Wayne");
joker = new Person("Joker");
batman = new SuperHero("Batman", bruceWayne, joker);
}
@Test
public void should_invoke_methods_without_arguments() throws Exception {
Object result = MethodSupport.methodResultFor(batman, "archenemy");
assertThat(result).isEqualTo(joker);
}
@Test
public void should_invoke_methods_from_superclass() throws Exception {
Object result = MethodSupport.methodResultFor(batman, "getName");
assertThat(result).isEqualTo("Batman");
}
@Test
public void should_fail_meaningfully_if_object_instance_not_provided() throws Exception {
thrown.expectNullPointerException("Object instance can not be null!");
MethodSupport.methodResultFor(null, "methodName");
}
@Test
public void should_fail_meaningfully_if_method_name_not_provided() throws Exception {
thrown.expectNullPointerException("Method name can not be empty!");
MethodSupport.methodResultFor(batman, null);
}
@Test
public void should_fail_meaningfully_if_method_name_is_empty() throws Exception {
thrown.expectIllegalArgumentException("Method name can not be empty!");
MethodSupport.methodResultFor(batman, "");
}
@Test
public void should_fail_meaningfully_if_method_not_found() throws Exception {
thrown.expectIllegalArgumentException("Can't find method 'commitCrime' in class SuperHero.class. Make sure public" +
" method exists and accepts no arguments!");
MethodSupport.methodResultFor(batman, "commitCrime");
}
@Test
public void should_fail_meaningfully_if_method_does_not_return_value() throws Exception {
thrown.expectIllegalArgumentException("Method 'saveTheDay' in class SuperHero.class has to return a value!");
MethodSupport.methodResultFor(batman, "saveTheDay");
}
@Test
public void should_fail_meaningfully_if_method_is_not_public() throws Exception {
thrown.expectIllegalArgumentException("Can't find method 'trueIdentity' in class SuperHero.class. Make sure " +
"public method exists and accepts no arguments!");
MethodSupport.methodResultFor(batman, "trueIdentity");
}
public static class SuperHero extends Person {
private final Person trueIdentity;
private final Person archenemy;
public SuperHero(String name, Person trueIdentity, Person archenemy) {
super(name);
this.trueIdentity = trueIdentity;
this.archenemy = archenemy;
}
public Person archenemy() {
return archenemy;
}
public void saveTheDay() {
// do some superheroic stuff
}
@SuppressWarnings("unused")
private Person trueIdentity() {
return trueIdentity;
}
}
}