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

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package org.apache.juneau.json;

import static org.apache.juneau.testutils.TestUtils.*;
import static org.junit.Assert.*;

import java.net.*;
import java.net.URI;
import java.util.*;

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

@SuppressWarnings({"serial"})
public class CommonTest {

	//====================================================================================================
	// Trim nulls from beans
	//====================================================================================================
	@Test
	public void testTrimNullsFromBeans() throws Exception {
		JsonSerializerBuilder s = JsonSerializer.create().ssq();
		JsonParser p = JsonParser.DEFAULT;
		A t1 = A.create(), t2;

		s.trimNullProperties(false);
		String r = s.build().serialize(t1);
		assertEquals("{s1:null,s2:'s2'}", r);
		t2 = p.parse(r, A.class);
		assertEqualObjects(t1, t2);

		s.trimNullProperties(true);
		r = s.build().serialize(t1);
		assertEquals("{s2:'s2'}", r);
		t2 = p.parse(r, A.class);
		assertEqualObjects(t1, t2);
	}

	public static class A {
		public String s1, s2;

		public static A create() {
			A t = new A();
			t.s2 = "s2";
			return t;
		}
	}

	//====================================================================================================
	// Trim empty maps
	//====================================================================================================
	@Test
	public void testTrimEmptyMaps() throws Exception {
		JsonSerializerBuilder s = JsonSerializer.create().ssq();
		JsonParser p = JsonParser.DEFAULT;
		B t1 = B.create(), t2;
		String r;

		s.trimEmptyMaps(false);
		r = s.build().serialize(t1);
		assertEquals("{f1:{},f2:{f2a:null,f2b:{s2:'s2'}}}", r);
		t2 = p.parse(r, B.class);
		assertEqualObjects(t1, t2);

		s.trimEmptyMaps(true);
		r = s.build().serialize(t1);
		assertEquals("{f2:{f2a:null,f2b:{s2:'s2'}}}", r);
		t2 = p.parse(r, B.class);
		assertNull(t2.f1);

		s.trimEmptyMaps();
		r = s.build().serialize(t1);
		assertEquals("{f2:{f2a:null,f2b:{s2:'s2'}}}", r);
		t2 = p.parse(r, B.class);
		assertNull(t2.f1);
	}

	public static class B {
		public TreeMap<String,A> f1, f2;

		public static B create() {
			B t = new B();
			t.f1 = new TreeMap<>();
			t.f2 = new TreeMap<String,A>(){{put("f2a",null);put("f2b",A.create());}};
			return t;
		}
	}

	//====================================================================================================
	// Trim empty lists
	//====================================================================================================
	@Test
	public void testTrimEmptyLists() throws Exception {
		JsonSerializerBuilder s = JsonSerializer.create().ssq();
		JsonParser p = JsonParser.DEFAULT;
		C t1 = C.create(), t2;
		String r;

		s.trimEmptyCollections(false);
		r = s.build().serialize(t1);
		assertEquals("{f1:[],f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, C.class);
		assertEqualObjects(t1, t2);

		s.trimEmptyCollections(true);
		r = s.build().serialize(t1);
		assertEquals("{f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, C.class);
		assertNull(t2.f1);

		s.trimEmptyCollections();
		r = s.build().serialize(t1);
		assertEquals("{f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, C.class);
		assertNull(t2.f1);
	}

	public static class C {
		public List<A> f1, f2;

		public static C create() {
			C t = new C();
			t.f1 = new AList<>();
			t.f2 = new AList<A>().append(null).append(A.create());
			return t;
		}
	}

	//====================================================================================================
	// Trim empty arrays
	//====================================================================================================
	@Test
	public void testTrimEmptyArrays() throws Exception {
		JsonSerializerBuilder s = JsonSerializer.create().ssq();
		JsonParser p = JsonParser.DEFAULT;
		D t1 = D.create(), t2;
		String r;

		s.trimEmptyCollections(false);
		r = s.build().serialize(t1);
		assertEquals("{f1:[],f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, D.class);
		assertEqualObjects(t1, t2);

		s.trimEmptyCollections(true);
		r = s.build().serialize(t1);
		assertEquals("{f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, D.class);
		assertNull(t2.f1);

		s.trimEmptyCollections();
		r = s.build().serialize(t1);
		assertEquals("{f2:[null,{s2:'s2'}]}", r);
		t2 = p.parse(r, D.class);
		assertNull(t2.f1);
	}

	public static class D {
		public A[] f1, f2;

		public static D create() {
			D t = new D();
			t.f1 = new A[]{};
			t.f2 = new A[]{null, A.create()};
			return t;
		}
	}

	//====================================================================================================
	// @Beanp.bpi annotation.
	//====================================================================================================
	@Test
	public void testBeanPropertyProperies() throws Exception {
		JsonSerializer s = SimpleJsonSerializer.DEFAULT;
		E1 t = new E1();
		String r;

		r = s.serialize(t);
		assertEquals("{x1:{f1:1},x2:{f1:1},x3:[{f1:1}],x4:[{f1:1}],x5:[{f1:1}],x6:[{f1:1}]}", r);
		r = s.getSchemaSerializer().serialize(t);
		assertTrue(r.indexOf("f2") == -1);
	}

	public static class E1 {
		@Beanp(properties="f1") public E2 x1 = new E2();
		@Beanp(properties="f1") public Map<String,Integer> x2 = new AMap<String,Integer>().append("f1",1).append("f2",2);
		@Beanp(properties="f1") public E2[] x3 = {new E2()};
		@Beanp(properties="f1") public List<E2> x4 = new AList<E2>().append(new E2());
		@Beanp(properties="f1") public ObjectMap[] x5 = {new ObjectMap().append("f1",1).append("f2",2)};
		@Beanp(properties="f1") public List<ObjectMap> x6 = new AList<ObjectMap>().append(new ObjectMap().append("f1",1).append("f2",2));
	}

	public static class E2 {
		public int f1 = 1;
		public int f2 = 2;
	}

	//====================================================================================================
	// @Beanp.bpi annotation on list of beans.
	//====================================================================================================
	@Test
	public void testBeanPropertyProperiesOnListOfBeans() throws Exception {
		JsonSerializer s = SimpleJsonSerializer.DEFAULT;
		List<F> l = new LinkedList<>();
		F t = new F();
		t.x1.add(new F());
		l.add(t);
		String json = s.serialize(l);
		assertEquals("[{x1:[{x2:2}],x2:2}]", json);
	}

	public static class F {
		@Beanp(properties="x2") public List<F> x1 = new LinkedList<>();
		public int x2 = 2;
	}

	//====================================================================================================
	// Test that URLs and URIs are serialized and parsed correctly.
	//====================================================================================================
	@Test
	public void testURIAttr() throws Exception {
		JsonSerializer s = SimpleJsonSerializer.DEFAULT;
		JsonParser p = JsonParser.DEFAULT;

		G t = new G();
		t.uri = new URI("http://uri");
		t.f1 = new URI("http://f1");
		t.f2 = new URL("http://f2");

		String json = s.serialize(t);
		t = p.parse(json, G.class);
		assertEquals("http://uri", t.uri.toString());
		assertEquals("http://f1", t.f1.toString());
		assertEquals("http://f2", t.f2.toString());
	}

	public static class G {
		public URI uri;
		public URI f1;
		public URL f2;
	}


	//====================================================================================================
	// Recursion
	//====================================================================================================
	@Test
	public void testRecursion() throws Exception {
		JsonSerializerBuilder s = JsonSerializer.create().ssq();

		R1 r1 = new R1();
		R2 r2 = new R2();
		R3 r3 = new R3();
		r1.r2 = r2;
		r2.r3 = r3;
		r3.r1 = r1;

		// No recursion detection
		try {
			s.build().serialize(r1);
			fail("Exception expected!");
		} catch (Exception e) {
			String msg = e.getLocalizedMessage();
			assertContains(msg, "It's recommended you use the BeanTraverseContext.BEANTRAVERSE_detectRecursions setting to help locate the loop.");
		}

		// Recursion detection, no ignore
		s.detectRecursions();
		try {
			s.build().serialize(r1);
			fail("Exception expected!");
		} catch (Exception e) {
			String msg = e.getLocalizedMessage();
			assertContains(msg,
				"[0] root:org.apache.juneau.json.CommonTest$R1",
				"->[1] r2:org.apache.juneau.json.CommonTest$R2",
				"->[2] r3:org.apache.juneau.json.CommonTest$R3",
				"->[3] r1:org.apache.juneau.json.CommonTest$R1"
			);
		}

		s.ignoreRecursions();
		assertEquals("{name:'foo',r2:{name:'bar',r3:{name:'baz'}}}", s.build().serialize(r1));

		// Make sure this doesn't blow up.
		s.build().getSchemaSerializer().serialize(r1);
	}

	public static class R1 {
		public String name = "foo";
		public R2 r2;
	}
	public static class R2 {
		public String name = "bar";
		public R3 r3;
	}
	public static class R3 {
		public String name = "baz";
		public R1 r1;
	}

	//====================================================================================================
	// Basic bean
	//====================================================================================================
	@Test
	public void testBasicBean() throws Exception {
		JsonSerializer s = JsonSerializer.create().ssq().trimNullProperties(false).sortProperties().build();

		J a = new J();
		a.setF1("J");
		a.setF2(100);
		a.setF3(true);
		assertEquals("C1", "{f1:'J',f2:100,f3:true}", s.serialize(a));
	}

	public static class J {
		private String f1 = null;
		private int f2 = -1;
		private boolean f3 = false;

		public String getF1() {
			return this.f1;
		}

		public void setF1(String f1) {
			this.f1 = f1;
		}

		public int getF2() {
			return this.f2;
		}

		public void setF2(int f2) {
			this.f2 = f2;
		}

		public boolean isF3() {
			return this.f3;
		}

		public void setF3(boolean f3) {
			this.f3 = f3;
		}

		@Override /* Object */
		public String toString() {
			return ("J(f1: " + this.getF1() + ", f2: " + this.getF2() + ")");
		}
	}
}