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/*
* Copyright (C) 2009 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;
import java.io.CharArrayReader;
import java.io.CharArrayWriter;
import java.io.StringReader;
import junit.framework.TestCase;
import com.google.gson.common.TestTypes.BagOfPrimitives;
import com.google.gson.internal.Streams;
import com.google.gson.stream.JsonReader;
/**
* Unit test for {@link JsonParser}
*
* @author Inderjeet Singh
*/
public class JsonParserTest extends TestCase {
private JsonParser parser;
@Override
protected void setUp() throws Exception {
super.setUp();
parser = new JsonParser();
}
public void testParseInvalidJson() {
try {
parser.parse("[[]");
fail();
} catch (JsonSyntaxException expected) { }
}
public void testParseUnquotedStringArrayFails() {
JsonElement element = parser.parse("[a,b,c]");
assertEquals("a", element.getAsJsonArray().get(0).getAsString());
assertEquals("b", element.getAsJsonArray().get(1).getAsString());
assertEquals("c", element.getAsJsonArray().get(2).getAsString());
assertEquals(3, element.getAsJsonArray().size());
}
public void testParseString() {
String json = "{a:10,b:'c'}";
JsonElement e = parser.parse(json);
assertTrue(e.isJsonObject());
assertEquals(10, e.getAsJsonObject().get("a").getAsInt());
assertEquals("c", e.getAsJsonObject().get("b").getAsString());
}
public void testParseEmptyString() {
JsonElement e = parser.parse("\" \"");
assertTrue(e.isJsonPrimitive());
assertEquals(" ", e.getAsString());
}
public void testParseEmptyWhitespaceInput() {
JsonElement e = parser.parse(" ");
assertTrue(e.isJsonNull());
}
public void testParseUnquotedSingleWordStringFails() {
assertEquals("Test", parser.parse("Test").getAsString());
}
public void testParseUnquotedMultiWordStringFails() {
String unquotedSentence = "Test is a test..blah blah";
try {
parser.parse(unquotedSentence);
fail();
} catch (JsonSyntaxException expected) { }
}
public void testParseMixedArray() {
String json = "[{},13,\"stringValue\"]";
JsonElement e = parser.parse(json);
assertTrue(e.isJsonArray());
JsonArray array = e.getAsJsonArray();
assertEquals("{}", array.get(0).toString());
assertEquals(13, array.get(1).getAsInt());
assertEquals("stringValue", array.get(2).getAsString());
}
public void testParseReader() {
StringReader reader = new StringReader("{a:10,b:'c'}");
JsonElement e = parser.parse(reader);
assertTrue(e.isJsonObject());
assertEquals(10, e.getAsJsonObject().get("a").getAsInt());
assertEquals("c", e.getAsJsonObject().get("b").getAsString());
}
public void testReadWriteTwoObjects() throws Exception {
Gson gson = new Gson();
CharArrayWriter writer = new CharArrayWriter();
BagOfPrimitives expectedOne = new BagOfPrimitives(1, 1, true, "one");
writer.write(gson.toJson(expectedOne).toCharArray());
BagOfPrimitives expectedTwo = new BagOfPrimitives(2, 2, false, "two");
writer.write(gson.toJson(expectedTwo).toCharArray());
CharArrayReader reader = new CharArrayReader(writer.toCharArray());
JsonReader parser = new JsonReader(reader);
parser.setLenient(true);
JsonElement element1 = Streams.parse(parser);
JsonElement element2 = Streams.parse(parser);
BagOfPrimitives actualOne = gson.fromJson(element1, BagOfPrimitives.class);
assertEquals("one", actualOne.stringValue);
BagOfPrimitives actualTwo = gson.fromJson(element2, BagOfPrimitives.class);
assertEquals("two", actualTwo.stringValue);
}
}
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