juneau-core-test/src/test/java/org/apache/juneau/ParserGenericsTest.java

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package org.apache.juneau;

import static org.junit.Assert.*;

import java.util.*;

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

@SuppressWarnings({"serial","javadoc"})
public class ParserGenericsTest {

	//====================================================================================================
	// Test generic maps
	//====================================================================================================
	@Test
	public void testMap() throws Exception {
		ReaderParser p = JsonParser.DEFAULT;

		String t = "{foo:{bar:'baz'}}";
		Map<String,TreeMap<String,String>> r1 = p.parse(t, TestMap1.class);
		assertEquals(TestMap1.class, r1.getClass());
		assertEquals(TreeMap.class, r1.get("foo").getClass());

		t = "{foo:[1,2,3]}";
		Map<String,LinkedList<Integer>> r2 = p.parse(t, TestMap2.class);
		assertEquals(TestMap2.class, r2.getClass());
		assertEquals(LinkedList.class, r2.get("foo").getClass());
		assertEquals(Integer.class, r2.get("foo").get(0).getClass());
	}

	public static class TestMap1 extends LinkedHashMap<String,TreeMap<String,String>> {}
	public static class TestMap2 extends LinkedHashMap<String,LinkedList<Integer>> {}

	//====================================================================================================
	// Test generic maps
	//====================================================================================================
	@Test
	public void testCollection() throws Exception {
		ReaderParser p = JsonParser.DEFAULT;

		String t = "[{foo:{bar:'baz'}}]";
		List<TestMap1> r1 = p.parse(t, TestCollection1.class);
		assertEquals(TestCollection1.class, r1.getClass());
		assertEquals(TestMap1.class, r1.get(0).getClass());
		assertEquals(TreeMap.class, r1.get(0).get("foo").getClass());

		t = "[{foo:[1,2,3]}]";
		List<TestMap2> r2 = p.parse(t, TestCollection2.class);
		assertEquals(TestCollection2.class, r2.getClass());
		assertEquals(TestMap2.class, r2.get(0).getClass());
		assertEquals(LinkedList.class, r2.get(0).get("foo").getClass());
		assertEquals(Integer.class, r2.get(0).get("foo").get(0).getClass());
	}

	public static class TestCollection1 extends LinkedList<TestMap1> {}
	public static class TestCollection2 extends LinkedList<TestMap2> {}
}