juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/OListTest.java

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package org.apache.juneau;

import static org.apache.juneau.assertions.Assertions.*;
import static org.junit.Assert.*;
import static org.junit.runners.MethodSorters.*;

import java.io.*;
import java.util.*;

import org.apache.juneau.collections.*;
import org.junit.*;

@FixMethodOrder(NAME_ASCENDING)
public class OListTest {

	//====================================================================================================
	// testBasic
	//====================================================================================================
	@Test
	public void testBasic() throws Exception {

		assertEquals(
			"['A','B','C']",
			new OList((Object[])new String[]{"A","B","C"}).toString()
		);

		assertEquals(
			"['A','B','C']",
			new OList("A","B","C").toString()
		);

		assertEquals(
			"['A','B','C']",
			new OList(Arrays.asList(new String[]{"A","B","C"})).toString()
		);
	}

	//====================================================================================================
	// testIterateAs
	//====================================================================================================
	@Test
	public void testIterateAs() throws Exception {

		// Iterate over a list of OMaps.
		OList l = new OList("[{foo:'bar'},{baz:123}]");
		Iterator<OMap> i1 = l.elements(OMap.class).iterator();
		assertEquals("bar", i1.next().getString("foo"));
		assertEquals(123, (int)i1.next().getInt("baz"));

		// Iterate over a list of ints.
		l = new OList("[1,2,3]");
		Iterator<Integer> i2 = l.elements(Integer.class).iterator();
		assertEquals(1, (int)i2.next());
		assertEquals(2, (int)i2.next());
		assertEquals(3, (int)i2.next());

		// Iterate over a list of beans.
		// Automatically converts to beans.
		l = new OList("[{name:'John Smith',age:45}]");
		Iterator<Person> i3 = l.elements(Person.class).iterator();
		assertEquals("John Smith", i3.next().name);
	}

	public static class Person {
		public String name;
		public int age;
	}

	//====================================================================================================
	// testAtMethods
	//====================================================================================================
	@Test
	public void testAtMethods() throws Exception {
		OList l = new OList("[{foo:'bar'},{baz:123}]");
		String r;

		r = l.getAt("0/foo", String.class);
		assertEquals("bar", r);

		l.putAt("0/foo", "bing");
		r = l.getAt("0/foo", String.class);
		assertEquals("bing", r);

		l.postAt("", OMap.ofJson("{a:'b'}"));
		r = l.getAt("2/a", String.class);
		assertEquals("b", r);

		l.deleteAt("2");
		assertEquals("[{foo:'bing'},{baz:123}]", l.toString());
	}

	//====================================================================================================
	// OList(Reader)
	//====================================================================================================
	@Test
	public void testFromReader() throws Exception {
		assertObject(new OList(new StringReader("[1,2,3]"))).json().is("[1,2,3]");
	}

	//====================================================================================================
	// testGetMap
	//====================================================================================================
	@Test
	public void testGetMap() throws Exception {
		OList l = new OList("[{1:'true',2:'false'}]");
		Map<Integer,Boolean> m2 = l.getMap(0, Integer.class, Boolean.class);
		assertObject(m2).json().is("{'1':true,'2':false}");
		assertEquals(Integer.class, m2.keySet().iterator().next().getClass());
		assertEquals(Boolean.class, m2.values().iterator().next().getClass());

		m2 = l.get(0, Map.class, Integer.class, Boolean.class);
		assertObject(m2).json().is("{'1':true,'2':false}");
		assertEquals(Integer.class, m2.keySet().iterator().next().getClass());
		assertEquals(Boolean.class, m2.values().iterator().next().getClass());
	}

	//====================================================================================================
	// testGetList
	//====================================================================================================
	@Test
	public void testGetList() throws Exception {
		OList l = new OList("[['123','456']]");
		List<Integer> l2 = l.getList(0, Integer.class);
		assertObject(l2).json().is("[123,456]");
		assertEquals(Integer.class, l2.iterator().next().getClass());

		l2 = l.get(0, List.class, Integer.class);
		assertObject(l2).json().is("[123,456]");
		assertEquals(Integer.class, l2.iterator().next().getClass());
	}
}