| /* |
| * Copyright (C) 2008 Google Inc. |
| * |
| * 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.gson.functional; |
| |
| import com.google.gson.FieldNamingPolicy; |
| import com.google.gson.FieldNamingStrategy; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.gson.annotations.SerializedName; |
| import com.google.gson.common.TestTypes.ClassWithSerializedNameFields; |
| import com.google.gson.common.TestTypes.StringWrapper; |
| |
| import junit.framework.TestCase; |
| |
| import java.lang.reflect.Field; |
| |
| /** |
| * Functional tests for naming policies. |
| * |
| * @author Inderjeet Singh |
| * @author Joel Leitch |
| */ |
| public class NamingPolicyTest extends TestCase { |
| private GsonBuilder builder; |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| builder = new GsonBuilder(); |
| } |
| |
| public void testGsonWithNonDefaultFieldNamingPolicySerialization() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE).create(); |
| StringWrapper target = new StringWrapper("blah"); |
| assertEquals("{\"SomeConstantStringInstanceField\":\"" |
| + target.someConstantStringInstanceField + "\"}", gson.toJson(target)); |
| } |
| |
| public void testGsonWithNonDefaultFieldNamingPolicyDeserialiation() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE).create(); |
| String target = "{\"SomeConstantStringInstanceField\":\"someValue\"}"; |
| StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class); |
| assertEquals("someValue", deserializedObject.someConstantStringInstanceField); |
| } |
| |
| public void testGsonWithLowerCaseDashPolicySerialization() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES).create(); |
| StringWrapper target = new StringWrapper("blah"); |
| assertEquals("{\"some-constant-string-instance-field\":\"" |
| + target.someConstantStringInstanceField + "\"}", gson.toJson(target)); |
| } |
| |
| public void testGsonWithLowerCaseDashPolicyDeserialiation() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES).create(); |
| String target = "{\"some-constant-string-instance-field\":\"someValue\"}"; |
| StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class); |
| assertEquals("someValue", deserializedObject.someConstantStringInstanceField); |
| } |
| |
| public void testGsonWithLowerCaseUnderscorePolicySerialization() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES) |
| .create(); |
| StringWrapper target = new StringWrapper("blah"); |
| assertEquals("{\"some_constant_string_instance_field\":\"" |
| + target.someConstantStringInstanceField + "\"}", gson.toJson(target)); |
| } |
| |
| public void testGsonWithLowerCaseUnderscorePolicyDeserialiation() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES) |
| .create(); |
| String target = "{\"some_constant_string_instance_field\":\"someValue\"}"; |
| StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class); |
| assertEquals("someValue", deserializedObject.someConstantStringInstanceField); |
| } |
| |
| public void testGsonWithSerializedNameFieldNamingPolicySerialization() { |
| Gson gson = builder.create(); |
| ClassWithSerializedNameFields expected = new ClassWithSerializedNameFields(5, 6); |
| String actual = gson.toJson(expected); |
| assertEquals(expected.getExpectedJson(), actual); |
| } |
| |
| public void testGsonWithSerializedNameFieldNamingPolicyDeserialization() { |
| Gson gson = builder.create(); |
| ClassWithSerializedNameFields expected = new ClassWithSerializedNameFields(5, 7); |
| ClassWithSerializedNameFields actual = |
| gson.fromJson(expected.getExpectedJson(), ClassWithSerializedNameFields.class); |
| assertEquals(expected.f, actual.f); |
| } |
| |
| public void testGsonDuplicateNameUsingSerializedNameFieldNamingPolicySerialization() { |
| Gson gson = builder.create(); |
| try { |
| ClassWithDuplicateFields target = new ClassWithDuplicateFields(10); |
| gson.toJson(target); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testGsonWithUpperCamelCaseSpacesPolicySerialiation() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES) |
| .create(); |
| StringWrapper target = new StringWrapper("blah"); |
| assertEquals("{\"Some Constant String Instance Field\":\"" |
| + target.someConstantStringInstanceField + "\"}", gson.toJson(target)); |
| } |
| |
| public void testGsonWithUpperCamelCaseSpacesPolicyDeserialiation() { |
| Gson gson = builder.setFieldNamingPolicy(FieldNamingPolicy.UPPER_CAMEL_CASE_WITH_SPACES) |
| .create(); |
| String target = "{\"Some Constant String Instance Field\":\"someValue\"}"; |
| StringWrapper deserializedObject = gson.fromJson(target, StringWrapper.class); |
| assertEquals("someValue", deserializedObject.someConstantStringInstanceField); |
| } |
| |
| public void testDeprecatedNamingStrategy() throws Exception { |
| Gson gson = builder.setFieldNamingStrategy(new UpperCaseNamingStrategy()).create(); |
| ClassWithDuplicateFields target = new ClassWithDuplicateFields(10); |
| String actual = gson.toJson(target); |
| assertEquals("{\"A\":10}", actual); |
| } |
| |
| public void testComplexFieldNameStrategy() throws Exception { |
| Gson gson = new Gson(); |
| String json = gson.toJson(new ClassWithComplexFieldName(10)); |
| String escapedFieldName = "@value\\\"_s$\\\\"; |
| assertEquals("{\"" + escapedFieldName + "\":10}", json); |
| |
| ClassWithComplexFieldName obj = gson.fromJson(json, ClassWithComplexFieldName.class); |
| assertEquals(10, obj.value); |
| } |
| |
| /** http://code.google.com/p/google-gson/issues/detail?id=349 */ |
| public void testAtSignInSerializedName() { |
| assertEquals("{\"@foo\":\"bar\"}", new Gson().toJson(new AtName())); |
| } |
| |
| static final class AtName { |
| @SerializedName("@foo") String f = "bar"; |
| } |
| |
| private static final class UpperCaseNamingStrategy implements FieldNamingStrategy { |
| @Override |
| public String translateName(Field f) { |
| return f.getName().toUpperCase(); |
| } |
| } |
| |
| @SuppressWarnings("unused") |
| private static class ClassWithDuplicateFields { |
| public Integer a; |
| @SerializedName("a") public Double b; |
| |
| public ClassWithDuplicateFields(Integer a) { |
| this(a, null); |
| } |
| |
| public ClassWithDuplicateFields(Double b) { |
| this(null, b); |
| } |
| |
| public ClassWithDuplicateFields(Integer a, Double b) { |
| this.a = a; |
| this.b = b; |
| } |
| } |
| |
| private static class ClassWithComplexFieldName { |
| @SerializedName("@value\"_s$\\") public final long value; |
| |
| ClassWithComplexFieldName(long value) { |
| this.value = value; |
| } |
| } |
| } |