package com.vaadin.server;
/*
* Copyright 2000-2014 Vaadin Ltd.
*
* 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.
*/
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;
import com.vaadin.server.JsonCodec.BeanProperty;
import com.vaadin.shared.communication.UidlValue;
import com.vaadin.shared.ui.splitpanel.AbstractSplitPanelState;
import elemental.json.Json;
import elemental.json.JsonArray;
import elemental.json.JsonException;
import elemental.json.JsonValue;
/**
* Tests for {@link JsonCodec}
*
* @author Vaadin Ltd
* @since 7.0
*
*/
public class JSONSerializerTest extends TestCase {
HashMap<String, AbstractSplitPanelState> stringToStateMap;
HashMap<AbstractSplitPanelState, String> stateToStringMap;
public void testStringToBeanMapSerialization() throws Exception {
Type mapType = getClass().getDeclaredField("stringToStateMap")
.getGenericType();
stringToStateMap = new HashMap<String, AbstractSplitPanelState>();
AbstractSplitPanelState s = new AbstractSplitPanelState();
AbstractSplitPanelState s2 = new AbstractSplitPanelState();
s.caption = "State 1";
s.id = "foo";
s2.caption = "State 2";
s2.id = "bar";
stringToStateMap.put("string - state 1", s);
stringToStateMap.put("String - state 2", s2);
JsonValue encodedMap = JsonCodec.encode(stringToStateMap, null, mapType,
null).getEncodedValue();
ensureDecodedCorrectly(stringToStateMap, encodedMap, mapType);
}
public void testBeanToStringMapSerialization() throws Exception {
Type mapType = getClass().getDeclaredField("stateToStringMap")
.getGenericType();
stateToStringMap = new HashMap<AbstractSplitPanelState, String>();
AbstractSplitPanelState s = new AbstractSplitPanelState();
AbstractSplitPanelState s2 = new AbstractSplitPanelState();
s.caption = "State 1";
s2.caption = "State 2";
stateToStringMap.put(s, "string - state 1");
stateToStringMap.put(s2, "String - state 2");
JsonValue encodedMap = JsonCodec.encode(stateToStringMap, null, mapType,
null).getEncodedValue();
ensureDecodedCorrectly(stateToStringMap, encodedMap, mapType);
}
public void testNullLegacyValue() throws JsonException {
JsonArray inputArray = Json.createArray();
inputArray.set(0, "n");
inputArray.set(1, Json.createNull());
UidlValue decodedObject = (UidlValue) JsonCodec.decodeInternalType(
UidlValue.class, true, inputArray, null);
assertNull(decodedObject.getValue());
}
public void testNullTypeOtherValue() {
try {
JsonArray inputArray = Json.createArray();
inputArray.set(0, "n");
inputArray.set(1, "a");
UidlValue decodedObject = (UidlValue) JsonCodec.decodeInternalType(
UidlValue.class, true, inputArray, null);
throw new AssertionFailedError("No JsonException thrown");
} catch (JsonException e) {
// Should throw exception
}
}
private void ensureDecodedCorrectly(Object original, JsonValue encoded,
Type type) throws Exception {
Object serverSideDecoded = JsonCodec.decodeInternalOrCustomType(type,
encoded, null);
assertTrue("Server decoded", equals(original, serverSideDecoded));
}
private boolean equals(Object o1, Object o2) throws Exception {
if (o1 == null) {
return (o2 == null);
}
if (o2 == null) {
return false;
}
if (o1 instanceof Map) {
if (!(o2 instanceof Map)) {
return false;
}
return equalsMap((Map) o1, (Map) o2);
}
if (o1.getClass() != o2.getClass()) {
return false;
}
if (o1 instanceof Collection || o1 instanceof Number
|| o1 instanceof String) {
return o1.equals(o2);
}
return equalsBean(o1, o2);
}
private boolean equalsBean(Object o1, Object o2) throws Exception {
for (BeanProperty property : JsonCodec.getProperties(o1.getClass())) {
Object c1 = property.getValue(o1);
Object c2 = property.getValue(o2);
if (!equals(c1, c2)) {
return false;
}
}
return true;
}
private boolean equalsMap(Map o1, Map o2) throws Exception {
for (Object key1 : o1.keySet()) {
Object key2 = key1;
if (!(o2.containsKey(key2))) {
// Try to fins a key that is equal
for (Object k2 : o2.keySet()) {
if (equals(key1, k2)) {
key2 = k2;
break;
}
}
}
if (!equals(o1.get(key1), o2.get(key2))) {
return false;
}
}
return true;
}
}