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gson cleanup work

This commit is contained in:
eugenp 2014-09-11 18:38:42 +03:00
parent e8a6b469f6
commit 42d17c1c4d
4 changed files with 121 additions and 81 deletions
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2
gson/.project
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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>jackson</name>
<name>gson</name>
<comment></comment>
<projects>
</projects>

80
gson/src/test/java/org/baeldung/gson/serialization/GsonSerializationTest.java
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@ -1,80 +0,0 @@
package org.baeldung.gson.serialization;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.Date;
import org.junit.Test;
import com.google.common.collect.Lists;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
public class GsonSerializationTest {
@Test
public void givenCollection_whenSerializing_thenCorrect() {
final Collection<SourceClass> sourceCollection = Lists.newArrayList(new SourceClass(1, "one"), new SourceClass(2, "two"));
final Type sourceCollectionType = new TypeToken<Collection<SourceClass>>() {
}.getType();
final String jsonCollection = new Gson().toJson(sourceCollection, sourceCollectionType);
// test
final String estimatedResult = "[{\"intValue\":1,\"stringValue\":\"one\"},{\"intValue\":2,\"stringValue\":\"two\"}]";
assertEquals(estimatedResult, jsonCollection);
}
@Test
public void givenArrayOfObjects_whenSerializing_thenCorrect() {
final SourceClass[] sourceArray = { new SourceClass(1, "one"), new SourceClass(2, "two") };
final String jsonString = new Gson().toJson(sourceArray);
// test
final String estimatedResult = "[{\"intValue\":1,\"stringValue\":\"one\"},{\"intValue\":2,\"stringValue\":\"two\"}]";
assertEquals(estimatedResult, jsonString);
}
@Test
public void givenUsingCustomSerializer_whenChangingNameOfFieldOnSerializing_thenCorrect() {
final SourceClass sourceObject = new SourceClass(7, "seven");
final GsonBuilder gsonBuildr = new GsonBuilder();
gsonBuildr.registerTypeAdapter(SourceClass.class, new DifferentNameSerializer());
final Gson gson = gsonBuildr.create();
final String jsonString = gson.toJson(sourceObject);
// test
final String estimatedResult = "{\"otherIntValue\":7,\"otherStringValue\":\"seven\"}";
assertEquals(estimatedResult, jsonString);
}
@Test
public void givenIgnoringAField_whenSerializingWithCustomSerializer_thenFieldIgnored() {
final SourceClass sourceObject = new SourceClass(7, "seven");
final GsonBuilder gsonBuildr = new GsonBuilder();
gsonBuildr.registerTypeAdapter(SourceClass.class, new IgnoringFieldsSerializer());
final Gson gson = gsonBuildr.create();
final String jsonString = gson.toJson(sourceObject);
// test
final String estimatedResult = "{\"intValue\":7}";
assertEquals(estimatedResult, jsonString);
}
@Test
public void givenDate_whenSerializing_thenCorrect() {
final Date sourceDate = new Date(1000000L);
final Gson gson = new Gson();
final Type sourceDateType = new TypeToken<Date>() {
}.getType();
final String jsonDate = gson.toJson(sourceDate, sourceDateType);
// test
final String estimatedResult = "\"Jan 1, 1970 3:16:40 AM\"";
assertTrue(jsonDate.equals(estimatedResult));
}
}

27
gson/src/test/java/org/baeldung/gson/serialization/IgnoringFieldsNotMatchingCriteriaSerializer.java Normal file
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package org.baeldung.gson.serialization;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import java.lang.reflect.Type;
public class IgnoringFieldsNotMatchingCriteriaSerializer implements JsonSerializer<SourceClass> {
@Override
public JsonElement serialize(SourceClass src, Type typeOfSrc, JsonSerializationContext context) {
JsonObject jObject = new JsonObject();
// Criteria: intValue >= 0
if (src.getIntValue() >= 0) {
String intValue = "intValue";
jObject.addProperty(intValue, src.getIntValue());
}
String stringValue = "stringValue";
jObject.addProperty(stringValue, src.getStringValue());
return jObject;
}
}

93
gson/src/test/java/org/baeldung/gson/serialization/test/GsonSerializationTest.java Normal file
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package org.baeldung.gson.serialization.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.lang.reflect.Type;
import java.util.Collection;
import java.util.Date;
import org.baeldung.gson.serialization.DifferentNameSerializer;
import org.baeldung.gson.serialization.IgnoringFieldsNotMatchingCriteriaSerializer;
import org.baeldung.gson.serialization.IgnoringFieldsSerializer;
import org.baeldung.gson.serialization.SourceClass;
import org.junit.Test;
import com.google.common.collect.Lists;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;
public class GsonSerializationTest {
@Test
public void givenArrayOfObjects_whenSerializing_thenCorrect() {
final SourceClass[] sourceArray = { new SourceClass(1, "one"), new SourceClass(2, "two") };
final String jsonString = new Gson().toJson(sourceArray);
// test
final String expectedResult = "[{\"intValue\":1,\"stringValue\":\"one\"},{\"intValue\":2,\"stringValue\":\"two\"}]";
assertEquals(expectedResult, jsonString);
}
@Test
public void givenCollection_whenSerializing_thenCorrect() {
final Collection<SourceClass> sourceCollection = Lists.newArrayList(new SourceClass(1, "one"), new SourceClass(2, "two"));
final Type sourceCollectionType = new TypeToken<Collection<SourceClass>>() {
}.getType();
final String jsonCollection = new Gson().toJson(sourceCollection, sourceCollectionType);
final String expectedResult = "[{\"intValue\":1,\"stringValue\":\"one\"},{\"intValue\":2,\"stringValue\":\"two\"}]";
assertEquals(expectedResult, jsonCollection);
}
@Test
public void givenUsingCustomSerializer_whenChangingNameOfFieldOnSerializing_thenCorrect() {
final SourceClass sourceObject = new SourceClass(7, "seven");
final GsonBuilder gsonBuildr = new GsonBuilder();
gsonBuildr.registerTypeAdapter(SourceClass.class, new DifferentNameSerializer());
final String jsonString = gsonBuildr.create().toJson(sourceObject);
final String expectedResult = "{\"otherIntValue\":7,\"otherStringValue\":\"seven\"}";
assertEquals(expectedResult, jsonString);
}
@Test
public void givenIgnoringAField_whenSerializingWithCustomSerializer_thenFieldIgnored() {
final SourceClass sourceObject = new SourceClass(7, "seven");
final GsonBuilder gsonBuildr = new GsonBuilder();
gsonBuildr.registerTypeAdapter(SourceClass.class, new IgnoringFieldsSerializer());
final String jsonString = gsonBuildr.create().toJson(sourceObject);
final String expectedResult = "{\"intValue\":7}";
assertEquals(expectedResult, jsonString);
}
@Test
public void givenDate_whenSerializing_thenCorrect() {
Date sourceDate = new Date(1000000L);
Gson gson = new Gson();
Type sourceDateType = new TypeToken<Date>() {
}.getType();
String jsonDate = gson.toJson(sourceDate, sourceDateType);
// test
System.out.println("jsonDate:\n" + jsonDate);
String estimatedResult = "\"Jan 1, 1970 3:16:40 AM\"";
assertTrue(jsonDate.equals(estimatedResult));
}
@Test
public void givenUsingCustomDeserializer_whenFieldNotMatchesCriteria_thenIgnoringIt() {
SourceClass sourceObject = new SourceClass(-1, "minus 1");
GsonBuilder gsonBuildr = new GsonBuilder();
gsonBuildr.registerTypeAdapter(SourceClass.class, new IgnoringFieldsNotMatchingCriteriaSerializer());
Gson gson = gsonBuildr.create();
Type sourceObjectType = new TypeToken<SourceClass>() {
}.getType();
String jsonString = gson.toJson(sourceObject, sourceObjectType);
// test
String estimatedResult = "{\"stringValue\":\"minus 1\"}";
assertEquals(estimatedResult, jsonString);
}
}