Johannes/gson-comments
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add a test case for a problem reported on the group.

Browse Source 
https://groups.google.com/d/topic/google-gson/EBmOCa8kJPE/discussion
This commit is contained in:
Jesse Wilson 2012-10-29 16:30:33 +00:00
parent 040bae34d7
commit b4d51db776
1 changed files with 43 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

45
gson/src/test/java/com/google/gson/GsonTypeAdapterTest.java
View File

@ -16,12 +16,11 @@
package com.google.gson;
import junit.framework.TestCase;
import java.lang.reflect.Type;
import java.math.BigInteger;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import junit.framework.TestCase;
/**
* Contains numerous tests involving registered type converters with a Gson instance.
@ -105,4 +104,46 @@ public class GsonTypeAdapterTest extends TestCase {
return new AtomicInteger(--intValue);
}
}
static abstract class Abstract {
String a;
}
static class Concrete extends Abstract {
String b;
}
// https://groups.google.com/d/topic/google-gson/EBmOCa8kJPE/discussion
public void testDeserializerForAbstractClass() {
Concrete instance = new Concrete();
instance.a = "android";
instance.b = "beep";
assertSerialized("{\"a\":\"android\"}", Abstract.class, true, true, instance);
assertSerialized("{\"a\":\"android\"}", Abstract.class, true, false, instance);
assertSerialized("{\"a\":\"android\"}", Abstract.class, false, true, instance);
assertSerialized("{\"a\":\"android\"}", Abstract.class, false, false, instance);
assertSerialized("{\"b\":\"beep\",\"a\":\"android\"}", Concrete.class, true, true, instance);
assertSerialized("{\"b\":\"beep\",\"a\":\"android\"}", Concrete.class, true, false, instance);
assertSerialized("{\"b\":\"beep\",\"a\":\"android\"}", Concrete.class, false, true, instance);
assertSerialized("{\"b\":\"beep\",\"a\":\"android\"}", Concrete.class, false, false, instance);
}
private void assertSerialized(String expected, Class<?> instanceType, boolean registerAbstractDeserializer,
boolean registerAbstractHierarchyDeserializer, Object instance) {
JsonDeserializer<Abstract> deserializer = new JsonDeserializer<Abstract>() {
public Abstract deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
throw new AssertionError();
}
};
GsonBuilder builder = new GsonBuilder();
if (registerAbstractDeserializer) {
builder.registerTypeAdapter(Abstract.class, deserializer);
}
if (registerAbstractHierarchyDeserializer) {
builder.registerTypeHierarchyAdapter(Abstract.class, deserializer);
}
Gson gson = builder.create();
assertEquals(expected, gson.toJson(instance, instanceType));
}
}