/*
* Copyright (C) 2013 The Guava Authors
*
* 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.google.common.collect;
import com.google.common.annotations.GwtCompatible;
import com.google.common.collect.MapConstraintsTest.TestKeyException;
import com.google.common.collect.MapConstraintsTest.TestValueException;
import com.google.common.collect.testing.TestStringMapGenerator;
import junit.framework.TestCase;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
/**
* Tests for {@link MapConstraints#constrainedMap}.
*
* @author Jared Levy
* @author Louis Wasserman
*/
@GwtCompatible(emulated = true)
public class ConstrainedMapTest extends TestCase {
private static final String TEST_KEY = "42";
private static final String TEST_VALUE = "test";
private static final MapConstraint<String, String> TEST_CONSTRAINT = new TestConstraint();
public void testPutWithForbiddenKeyForbiddenValue() {
Map<String, String> map = MapConstraints.constrainedMap(
new HashMap<String, String>(),
TEST_CONSTRAINT);
try {
map.put(TEST_KEY, TEST_VALUE);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
// success
}
}
public void testPutWithForbiddenKeyAllowedValue() {
Map<String, String> map = MapConstraints.constrainedMap(
new HashMap<String, String>(),
TEST_CONSTRAINT);
try {
map.put(TEST_KEY, "allowed");
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
// success
}
}
public void testPutWithAllowedKeyForbiddenValue() {
Map<String, String> map = MapConstraints.constrainedMap(
new HashMap<String, String>(),
TEST_CONSTRAINT);
try {
map.put("allowed", TEST_VALUE);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
// success
}
}
public static final class ConstrainedMapGenerator extends TestStringMapGenerator {
@Override
protected Map<String, String> create(Entry<String, String>[] entries) {
Map<String, String> map = MapConstraints.constrainedMap(
new HashMap<String, String>(),
TEST_CONSTRAINT);
for (Entry<String, String> entry : entries) {
map.put(entry.getKey(), entry.getValue());
}
return map;
}
}
private static final class TestConstraint implements MapConstraint<String, String> {
@Override
public void checkKeyValue(String key, String value) {
if (TEST_KEY.equals(key)) {
throw new TestKeyException();
}
if (TEST_VALUE.equals(value)) {
throw new TestValueException();
}
}
private static final long serialVersionUID = 0;
}
}