juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/json/CommonParserTest.java

// ***************************************************************************************************************************
// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
// * to you 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 org.apache.juneau.json;

import static org.junit.Assert.*;

import java.util.*;

import org.apache.juneau.*;
import org.apache.juneau.annotation.*;
import org.apache.juneau.parser.*;
import org.junit.*;

@SuppressWarnings({"rawtypes","serial"})
public class CommonParserTest {

	//====================================================================================================
	// testFromSerializer
	//====================================================================================================
	@Test
	public void testFromSerializer() throws Exception {
		ReaderParser p = JsonParser.create().dictionary(A1.class).build();

		Map m = null;
		m = (Map)p.parse("{a:1}", Object.class);
		assertEquals(1, m.get("a"));
		m = (Map)p.parse("{a:1,b:\"foo bar\"}", Object.class);
		assertEquals(1, m.get("a"));
		assertEquals("foo bar", m.get("b"));
		m = (Map)p.parse("{a:1,b:\"foo bar\",c:false}", Object.class);
		assertEquals(1, m.get("a"));
		assertEquals(false, m.get("c"));
		m = (Map)p.parse(" { a : 1 , b : 'foo' , c : false } ", Object.class);
		assertEquals(1, m.get("a"));
		assertEquals("foo", m.get("b"));
		assertEquals(false, m.get("c"));

		m = (Map)p.parse("{x:\"org.apache.juneau.test.Person\",addresses:[{x:\"org.apache.juneau.test.Address\",city:\"city A\",state:\"state A\",street:\"street A\",zip:12345}]}", Object.class);
		assertEquals("org.apache.juneau.test.Person", m.get("x"));
		List l = (List)m.get("addresses");
		assertNotNull(l);
		m = (Map)l.get(0);
		assertNotNull(m);
		assertEquals("org.apache.juneau.test.Address", m.get("x"));
		assertEquals("city A", m.get("city"));
		assertEquals("state A", m.get("state"));
		assertEquals("street A", m.get("street"));
		assertEquals(12345, m.get("zip"));

		ObjectList jl = (ObjectList)p.parse("[{attribute:'value'},{attribute:'value'}]", Object.class);
		assertEquals("value", jl.getObjectMap(0).getString("attribute"));
		assertEquals("value", jl.getObjectMap(1).getString("attribute"));

		// Verify that all the following return null.
		assertNull(p.parse((CharSequence)null, Object.class));
		assertNull(p.parse("", Object.class));
		assertNull(p.parse("   ", Object.class));
		assertNull(p.parse("   \t", Object.class));
		assertNull(p.parse("   /*foo*/", Object.class));
		assertNull(p.parse("   /*foo*/   ", Object.class));
		assertNull(p.parse("   //foo   ", Object.class));

		try {
			jl = (ObjectList)p.parse("[{attribute:'value'},{attribute:'value'}]", Object.class);
			assertEquals("value", jl.getObjectMap(0).getString("attribute"));
			assertEquals("value", jl.getObjectMap(1).getString("attribute"));
		} catch (Exception e) {
			fail(e.getLocalizedMessage());
		}

		A1 b = new A1();
		A2 tl = new A2();
		tl.add(new A3("name0","value0"));
		tl.add(new A3("name1","value1"));
		b.list = tl;
		String json = JsonSerializer.create().addBeanTypes(true).addRootType().dictionary(A1.class).build().serialize(b);
		b = (A1)p.parse(json, Object.class);
		assertEquals("value1", b.list.get(1).value);

		json = JsonSerializer.DEFAULT.serialize(b);
		b = p.parse(json, A1.class);
		assertEquals("value1", b.list.get(1).value);
	}

	@Bean(typeName="A1")
	public static class A1 {
		public A2 list;
	}

	public static class A2 extends LinkedList<A3> {
	}

	public static class A3 {
		public String name, value;
		public A3(){}
		public A3(String name, String value) {
			this.name = name;
			this.value = value;
		}
	}

	//====================================================================================================
	// Correct handling of unknown properties.
	//====================================================================================================
	@Test
	public void testCorrectHandlingOfUnknownProperties() throws Exception {
		ReaderParser p = JsonParser.create().ignoreUnknownBeanProperties().build();
		B b;

		String in =  "{a:1,unknown:3,b:2}";
		b = p.parse(in, B.class);
		assertEquals(b.a, 1);
		assertEquals(b.b, 2);

		try {
			p = JsonParser.DEFAULT;
			p.parse(in, B.class);
			fail("Exception expected");
		} catch (ParseException e) {}
	}

	public static class B {
		public int a, b;
	}

	//====================================================================================================
	// Writing to Collection properties with no setters.
	//====================================================================================================
	@Test
	public void testCollectionPropertiesWithNoSetters() throws Exception {
		JsonParser p = JsonParser.DEFAULT;
		String json = "{ints:[1,2,3],beans:[{a:1,b:2}]}";
		C t = p.parse(json, C.class);
		assertEquals(t.getInts().size(), 3);
		assertEquals(t.getBeans().get(0).b, 2);
	}

	public static class C {
		private Collection<Integer> ints = new LinkedList<>();
		private List<B> beans = new LinkedList<>();
		public Collection<Integer> getInts() {
			return ints;
		}
		public List<B> getBeans() {
			return beans;
		}
	}

	//====================================================================================================
	// Parser listeners.
	//====================================================================================================
	@Test
	public void testParserListeners() throws Exception {
		JsonParser p = JsonParser.create().ignoreUnknownBeanProperties().listener(MyParserListener.class).build();

		String json = "{a:1,unknownProperty:\"/foo\",b:2}";
		p.parse(json, B.class);
		assertEquals(1, MyParserListener.events.size());
		assertEquals("unknownProperty, line 1, column 5", MyParserListener.events.get(0));
	}

	public static class MyParserListener extends ParserListener {
		static final List<String> events = new LinkedList<>();

		@Override /* ParserListener */
		public <T> void onUnknownBeanProperty(ParserSession session, String propertyName, Class<T> beanClass, T bean) {
			events.add(propertyName + ", " + session.getPosition());
		}
	}
}