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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.pooling.extractor;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import java.lang.reflect.Method;
import org.junit.Before;
import org.junit.Test;
public class MethodExtractorTest {
private static final String VALUE = "the value";
private static final Integer INT_VALUE = 10;
private Method meth;
private MethodExtractor ext;
@Before
public void setUp() throws Exception {
meth = MyClass.class.getMethod("getValue");
ext = new MethodExtractor(meth);
}
@Test
public void testExtract() throws Exception {
assertEquals(VALUE, ext.extract(new MyClass()));
// repeat
assertEquals(VALUE, ext.extract(new MyClass()));
// null value
MyClass obj = new MyClass();
meth = MyClass.class.getMethod("getNullValue");
ext = new MethodExtractor(meth);
assertEquals(null, ext.extract(obj));
// different value type
meth = MyClass.class.getMethod("getIntValue");
ext = new MethodExtractor(meth);
assertEquals(INT_VALUE, ext.extract(new MyClass()));
}
@Test
public void testExtract_ArgEx() {
// pass it the wrong class type
assertNull(ext.extract(this));
}
@Test
public void testExtract_InvokeEx() throws Exception {
// invoke method that throws an exception
meth = MyClass.class.getMethod("throwException");
ext = new MethodExtractor(meth);
assertEquals(null, ext.extract(new MyClass()));
}
private static class MyClass {
@SuppressWarnings("unused")
public String getValue() {
return VALUE;
}
@SuppressWarnings("unused")
public int getIntValue() {
return INT_VALUE;
}
@SuppressWarnings("unused")
public String getNullValue() {
return null;
}
@SuppressWarnings("unused")
public String throwException() {
throw new IllegalStateException("expected");
}
}
}
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