/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you 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 org.jclouds.json;
import static com.google.common.io.BaseEncoding.base16;
import static com.google.common.primitives.Bytes.asList;
import static org.testng.Assert.assertEquals;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.jclouds.json.config.GsonModule;
import org.jclouds.json.config.GsonModule.DefaultExclusionStrategy;
import org.testng.annotations.Test;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.gson.FieldAttributes;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.TypeLiteral;
@Test
public class JsonTest {
private Json json = Guice.createInjector(new GsonModule()).getInstance(Json.class);
private static class ObjectNoDefaultConstructor {
private final String stringValue;
private final int intValue;
public ObjectNoDefaultConstructor(String stringValue, int intValue) {
this.stringValue = stringValue;
this.intValue = intValue;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + intValue;
result = prime * result + ((stringValue == null) ? 0 : stringValue.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
ObjectNoDefaultConstructor other = (ObjectNoDefaultConstructor) obj;
if (intValue != other.intValue)
return false;
if (stringValue == null) {
if (other.stringValue != null)
return false;
} else if (!stringValue.equals(other.stringValue))
return false;
return true;
}
}
public void testObjectNoDefaultConstructor() {
ObjectNoDefaultConstructor obj = new ObjectNoDefaultConstructor("foo", 1);
assertEquals(json.toJson(obj), "{\"stringValue\":\"foo\",\"intValue\":1}");
ObjectNoDefaultConstructor obj2 = json.fromJson(json.toJson(obj), ObjectNoDefaultConstructor.class);
assertEquals(obj2, obj);
assertEquals(json.toJson(obj2), json.toJson(obj));
}
static class ExcludeStringValue implements DefaultExclusionStrategy {
public boolean shouldSkipClass(Class<?> clazz) {
return false;
}
public boolean shouldSkipField(FieldAttributes f) {
return f.getName().equals("stringValue");
}
}
public void testExcluder() {
Json excluder = Guice.createInjector(new GsonModule(), new AbstractModule() {
protected void configure() {
bind(DefaultExclusionStrategy.class).to(ExcludeStringValue.class);
}
}).getInstance(Json.class);
ObjectNoDefaultConstructor obj = new ObjectNoDefaultConstructor("foo", 1);
assertEquals(excluder.toJson(obj), "{\"intValue\":1}");
}
private static class EnumInside {
private static enum Test {
FOO, BAR;
}
private Test enumValue;
}
private static class ByteList {
List<Byte> checksum;
}
public void testByteList() {
ByteList bl = new ByteList();
bl.checksum = asList(base16().lowerCase().decode("1dda05ed139664f1f89b9dec482b77c0"));
assertEquals(json.toJson(bl), "{\"checksum\":\"1dda05ed139664f1f89b9dec482b77c0\"}");
assertEquals(json.fromJson(json.toJson(bl), ByteList.class).checksum, bl.checksum);
}
public void testPropertiesSerializesDefaults() {
Properties props = new Properties();
props.put("string", "string");
props.put("number", "1");
props.put("boolean", "true");
assertEquals(json.toJson(props), "{\"string\":\"string\",\"boolean\":\"true\",\"number\":\"1\"}");
Properties props3 = new Properties(props);
assertEquals(json.toJson(props3), "{\"string\":\"string\",\"boolean\":\"true\",\"number\":\"1\"}");
Properties props2 = json.fromJson(json.toJson(props), Properties.class);
assertEquals(props2, props);
assertEquals(json.toJson(props2), json.toJson(props));
}
public void testMapStringObjectWithAllValidValuesOneDeep() {
Map<String, Object> map = Maps.newHashMap();
map.put("string", "string");
map.put("number", 1.0);
map.put("boolean", true);
map.put("map", ImmutableMap.of("key", "value"));
map.put("list", ImmutableList.of("key", "value"));
assertEquals(json.toJson(map),
"{\"string\":\"string\",\"map\":{\"key\":\"value\"},\"list\":[\"key\",\"value\"],\"boolean\":true,\"number\":1.0}");
Map<String, Object> map2 = json.fromJson(json.toJson(map), new TypeLiteral<Map<String, Object>>() {
}.getType());
assertEquals(map2, map);
assertEquals(json.toJson(map2), json.toJson(map));
}
public void testMapStringObjectWithNumericalKeysConvertToStrings() {
Map<String, Object> map = ImmutableMap.<String, Object> of("map", ImmutableMap.of(1, "value"));
assertEquals(json.toJson(map), "{\"map\":{\"1\":\"value\"}}");
Map<String, Object> map2 = json.fromJson(json.toJson(map), new TypeLiteral<Map<String, Object>>() {
}.getType());
// note conversion.. ensures valid
assertEquals(map2, ImmutableMap.<String, Object> of("map", ImmutableMap.of("1", "value")));
assertEquals(json.toJson(map2), json.toJson(map));
}
public void testMapStringObjectWithBooleanKeysConvertToStrings() {
Map<String, Object> map = ImmutableMap.<String, Object> of("map", ImmutableMap.of(true, "value"));
assertEquals(json.toJson(map), "{\"map\":{\"true\":\"value\"}}");
Map<String, Object> map2 = json.fromJson(json.toJson(map), new TypeLiteral<Map<String, Object>>() {
}.getType());
// note conversion.. ensures valid
assertEquals(map2, ImmutableMap.<String, Object> of("map", ImmutableMap.of("true", "value")));
assertEquals(json.toJson(map2), json.toJson(map));
}
public void testDeserializeEnum() {
assertEquals(json.fromJson("{enumValue : \"FOO\"}", EnumInside.class).enumValue, EnumInside.Test.FOO);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testDeserializeEnumWhenBadValue() {
assertEquals(json.fromJson("{enumValue : \"s\"}", EnumInside.class).enumValue, EnumInside.Test.FOO);
}
private static class EnumInsideWithParser {
private static enum Test {
FOO, BAR, UNRECOGNIZED;
@SuppressWarnings("unused")
public static Test fromValue(String state) {
try {
return valueOf(state);
} catch (IllegalArgumentException e) {
return UNRECOGNIZED;
}
}
}
private Test enumValue;
}
public void testDeserializeEnumWithParser() {
assertEquals(json.fromJson("{enumValue : \"FOO\"}", EnumInsideWithParser.class).enumValue,
EnumInsideWithParser.Test.FOO);
}
public void testDeserializeEnumWithParserAndBadValue() {
assertEquals(json.fromJson("{enumValue : \"sd\"}", EnumInsideWithParser.class).enumValue,
EnumInsideWithParser.Test.UNRECOGNIZED);
}
}