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Added tests in response to Issue 70.

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This commit is contained in:
Inderjeet Singh 2008-11-14 21:59:59 +00:00
parent 9a69560d9f
commit dfad0a3612
1 changed files with 65 additions and 1 deletions
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66
gson/src/test/java/com/google/gson/functional/CustomTypeAdaptersTest.java
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@ -17,10 +17,10 @@ package com.google.gson.functional;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.InstanceCreator;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonNull;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
@ -28,10 +28,13 @@ import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.google.gson.common.TestTypes.BagOfPrimitives;
import com.google.gson.common.TestTypes.ClassWithCustomTypeConverter;
import com.google.gson.reflect.TypeToken;
import junit.framework.TestCase;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;
/**
* Functional tests for the support of custom serializer and deserializers.
@ -252,4 +255,65 @@ public class CustomTypeAdaptersTest extends TestCase {
private static class ClassWithBooleanField {
Boolean value;
}
private static class StringHolder {
String part1;
String part2;
public StringHolder(String string) {
String[] parts = string.split(":");
part1 = parts[0];
part2 = parts[1];
}
public StringHolder(String part1, String part2) {
this.part1 = part1;
this.part2 = part2;
}
}
private static class StringHolderTypeAdapter implements JsonSerializer<StringHolder>,
JsonDeserializer<StringHolder>, InstanceCreator<StringHolder> {
public StringHolder createInstance(Type type) {
//Fill up with objects that will be thrown away
return new StringHolder("unknown:thing");
}
public StringHolder deserialize(JsonElement src, Type type,
JsonDeserializationContext context) {
return new StringHolder(src.getAsString());
}
public JsonElement serialize(StringHolder src, Type typeOfSrc,
JsonSerializationContext context) {
String contents = src.part1 + ':' + src.part2;
return new JsonPrimitive(contents);
}
}
// Test created from Issue 70
public void testCustomAdapterInvokedForCollectionElementSerialization() {
Gson gson = new GsonBuilder()
.registerTypeAdapter(StringHolder.class, new StringHolderTypeAdapter())
.create();
Type setType = new TypeToken<Set<StringHolder>>() {}.getType();
StringHolder holder = new StringHolder("Jacob", "Tomaw");
Set<StringHolder> setOfHolders = new HashSet<StringHolder>();
setOfHolders.add(holder);
String json = gson.toJson(holder);
assertTrue(json.contains("Jacob:Tomaw"));
}
// Test created from Issue 70
public void testCustomAdapterInvokedForCollectionElementDeserialization() {
Gson gson = new GsonBuilder()
.registerTypeAdapter(StringHolder.class, new StringHolderTypeAdapter())
.create();
Type setType = new TypeToken<Set<StringHolder>>() {}.getType();
Set<StringHolder> setOfFoo = gson.fromJson("['Jacob:Tomaw']", setType);
assertEquals(1, setOfFoo.size());
StringHolder foo = setOfFoo.iterator().next();
assertEquals("Jacob", foo.part1);
assertEquals("Tomaw", foo.part2);
}
}