juneau-core/juneau-core-utest/src/test/java/org/apache/juneau/utils/BeanDiffTest.java

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package org.apache.juneau.utils;

import static org.junit.Assert.*;

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

public class BeanDiffTest {

	public static class A {
		public int f1;
		public String f2;

		static A create(int f1, String f2) {
			A a = new A();
			a.f1 = f1;
			a.f2 = f2;
			return a;
		}
	}

	@Test
	public void testSame() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, "a"), A.create(1, "a")).build();
		assertFalse(bd.hasDiffs());
		assertEquals("{v1:{},v2:{}}", bd.toString());
	}

	@Test
	public void testDifferent() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, "a"), A.create(2, "b")).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1,f2:'a'},v2:{f1:2,f2:'b'}}", bd.toString());
	}

	@Test
	public void testFirstNull() throws Exception {
		BeanDiff bd = BeanDiff.create(null, A.create(2, "b")).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{},v2:{f1:2,f2:'b'}}", bd.toString());
	}

	@Test
	public void testSecondNull() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, "a"), null).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1,f2:'a'},v2:{}}", bd.toString());
	}

	@Test
	public void testBothNull() throws Exception {
		BeanDiff bd = BeanDiff.create(null, null).build();
		assertFalse(bd.hasDiffs());
		assertEquals("{v1:{},v2:{}}", bd.toString());
	}

	@Test
	public void testNullFields() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2,f2:'b'}}", bd.toString());
	}

	@Test
	public void testIncludes() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).include("f1").build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2}}", bd.toString());
	}

	@Test
	public void testIncludesSet() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).include(ASet.<String>create("f1")).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2}}", bd.toString());
	}

	@Test
	public void testExcludes() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).exclude("f2").build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2}}", bd.toString());
	}

	@Test
	public void testExcludesSet() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).exclude(ASet.<String>create("f2")).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2}}", bd.toString());
	}

	@Test
	public void testDifferentBeanContext() throws Exception {
		BeanDiff bd = BeanDiff.create(A.create(1, null), A.create(2, "b")).beanContext(BeanContext.DEFAULT_SORTED).build();
		assertTrue(bd.hasDiffs());
		assertEquals("{v1:{f1:1},v2:{f1:2,f2:'b'}}", bd.toString());
	}
}