Source Code Cross Referenced for DifferenceContextTest.java in  » Net » Terracotta » com » tc » util » diff » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » Terracotta » com.tc.util.diff 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice.  All rights reserved.
003:         */
004:        package com.tc.util.diff;
005:
006:        import org.apache.commons.lang.builder.EqualsBuilder;
007:
008:        import com.tc.test.TCTestCase;
009:        import com.tc.util.StandardStringifier;
010:        import com.tc.util.Stringifier;
011:        import com.tc.util.TCAssertionError;
012:        import com.tc.util.ToStringStringifier;
013:
014:        /**
015:         * Unit test for {@link DifferenceContext}.
016:         */
017:        public class DifferenceContextTest extends TCTestCase {
018:
019:            public void testInitial() throws Exception {
020:                assertEquals("", DifferenceContext.createInitial().toString());
021:                assertNotNull(DifferenceContext.createInitial().collection());
022:                assertFalse(DifferenceContext.createInitial().collection() == DifferenceContext
023:                        .createInitial().collection());
024:
025:                try {
026:                    DifferenceContext.createInitial(null);
027:                    fail("Didn't get NPE on no stringifier");
028:                } catch (NullPointerException npe) {
029:                    // ok
030:                }
031:            }
032:
033:            public void testStringifier() throws Exception {
034:                assertSame(StandardStringifier.INSTANCE, DifferenceContext
035:                        .createInitial().stringifier());
036:                assertSame(ToStringStringifier.INSTANCE, DifferenceContext
037:                        .createInitial(ToStringStringifier.INSTANCE)
038:                        .stringifier());
039:
040:                Stringifier s = new Stringifier() {
041:                    public String toString(Object o) {
042:                        return "X" + o + "Y";
043:                    }
044:                };
045:
046:                assertEquals("XaY", DifferenceContext.createInitial(s)
047:                        .describe("a"));
048:                assertEquals("XbY", DifferenceContext.createInitial(s).sub("Q")
049:                        .describe("b"));
050:            }
051:
052:            public void testSubAndToString() throws Exception {
053:                DifferenceContext initial = DifferenceContext.createInitial();
054:
055:                DifferenceContext a = initial.sub("a");
056:                assertNotSame(a, initial);
057:                assertEquals("/a", a.toString());
058:                assertEquals("", initial.toString());
059:                assertSame(initial.collection(), a.collection());
060:
061:                DifferenceContext b = a.sub("b");
062:                assertNotSame(a, b);
063:                assertEquals("/a/b", b.toString());
064:                assertEquals("/a", a.toString());
065:                assertEquals("", initial.toString());
066:                assertSame(initial.collection(), b.collection());
067:
068:                DifferenceContext c = b.sub("c");
069:                assertNotSame(c, b);
070:                assertNotSame(c, a);
071:                assertEquals("/a/b/c", c.toString());
072:                assertEquals("/a/b", b.toString());
073:                assertEquals("/a", a.toString());
074:                assertEquals("", initial.toString());
075:                assertSame(initial.collection(), c.collection());
076:
077:                DifferenceContext d = a.sub("d");
078:                assertNotSame(d, c);
079:                assertNotSame(d, b);
080:                assertNotSame(d, a);
081:                assertEquals("/a/d", d.toString());
082:                assertEquals("/a/b/c", c.toString());
083:                assertEquals("/a/b", b.toString());
084:                assertEquals("/a", a.toString());
085:                assertEquals("", initial.toString());
086:                assertSame(initial.collection(), d.collection());
087:            }
088:
089:            public void testDifferences() throws Exception {
090:                DifferenceContext initial = DifferenceContext.createInitial();
091:                DifferenceContext otherInitial = DifferenceContext
092:                        .createInitial();
093:
094:                assertNotSame(initial, otherInitial);
095:
096:                assertEquals(initial, otherInitial);
097:                assertFalse(initial.hasDifferences());
098:                assertEqualsOrdered(new Object[0], initial.getDifferences());
099:
100:                MockDifference initialDifference = new MockDifference(initial,
101:                        "foo", "bar");
102:                initial.addDifference(initialDifference);
103:                assertFalse(initial.equals(otherInitial));
104:                assertTrue(initial.hasDifferences());
105:                assertFalse(otherInitial.hasDifferences());
106:                assertEqualsOrdered(new Object[] { initialDifference }, initial
107:                        .getDifferences());
108:                assertEqualsOrdered(new Object[0], otherInitial
109:                        .getDifferences());
110:
111:                MockDifference otherInitialDifference = new MockDifference(
112:                        otherInitial, "foo", "bar");
113:                otherInitial.addDifference(otherInitialDifference);
114:                assertEquals(initial, otherInitial);
115:                assertTrue(initial.hasDifferences());
116:                assertTrue(otherInitial.hasDifferences());
117:                assertEqualsOrdered(new Object[] { initialDifference }, initial
118:                        .getDifferences());
119:                assertEqualsOrdered(new Object[] { otherInitialDifference },
120:                        otherInitial.getDifferences());
121:
122:                initial
123:                        .addDifference(new MockDifference(initial, "foo", "baz"));
124:                assertFalse(initial.equals(otherInitial));
125:                assertFalse(otherInitial.equals(initial));
126:
127:                otherInitial.addDifference(new MockDifference(otherInitial,
128:                        "foo", "quux"));
129:                assertFalse(initial.equals(otherInitial));
130:                assertFalse(otherInitial.equals(initial));
131:
132:                initial = DifferenceContext.createInitial();
133:                otherInitial = DifferenceContext.createInitial();
134:
135:                assertEquals(initial, otherInitial);
136:                assertNotSame(initial, otherInitial);
137:
138:                DifferenceContext initA = initial.sub("a");
139:                DifferenceContext otherInitA = otherInitial.sub("a");
140:                DifferenceContext initB = initA.sub("b");
141:                DifferenceContext otherInitB = otherInitA.sub("b");
142:                DifferenceContext initC = initial.sub("c");
143:                DifferenceContext otherInitC = otherInitial.sub("c");
144:
145:                assertEquals(initial, otherInitial);
146:                assertEquals(initA, otherInitA);
147:                assertEquals(initB, otherInitB);
148:                assertEquals(initC, otherInitC);
149:
150:                MockDifference diffInit = new MockDifference(initial, "1", "2");
151:                MockDifference diffOtherInit = new MockDifference(otherInitial,
152:                        "1", "2");
153:                MockDifference diffInitA = new MockDifference(initA, "3", "4");
154:                MockDifference diffOtherInitA = new MockDifference(otherInitA,
155:                        "3", "4");
156:                MockDifference diffInitB = new MockDifference(initB, "5", "6");
157:                MockDifference diffOtherInitB = new MockDifference(otherInitB,
158:                        "5", "6");
159:                MockDifference diffInitC = new MockDifference(initC, "7", "8");
160:                MockDifference diffOtherInitC = new MockDifference(otherInitC,
161:                        "7", "8");
162:
163:                DifferenceContext[] initialContexts = new DifferenceContext[] {
164:                        initial, initA, initB, initC };
165:                DifferenceContext[] otherInitialContexts = new DifferenceContext[] {
166:                        otherInitial, otherInitA, otherInitB, otherInitC };
167:
168:                initial.addDifference(diffInit);
169:                checkDifferences(initialContexts, new Object[] { diffInit },
170:                        otherInitialContexts, new Object[0]);
171:                otherInitial.addDifference(diffOtherInit);
172:                checkDifferences(initialContexts, new Object[] { diffInit },
173:                        otherInitialContexts, new Object[] { diffOtherInit });
174:
175:                initA.addDifference(diffInitA);
176:                checkDifferences(initialContexts, new Object[] { diffInit,
177:                        diffInitA }, otherInitialContexts,
178:                        new Object[] { diffOtherInit });
179:                otherInitA.addDifference(diffOtherInitA);
180:                checkDifferences(initialContexts, new Object[] { diffInit,
181:                        diffInitA }, otherInitialContexts, new Object[] {
182:                        diffOtherInit, diffOtherInitA });
183:
184:                initB.addDifference(diffInitB);
185:                checkDifferences(initialContexts, new Object[] { diffInit,
186:                        diffInitA, diffInitB }, otherInitialContexts,
187:                        new Object[] { diffOtherInit, diffOtherInitA });
188:                otherInitB.addDifference(diffOtherInitB);
189:                checkDifferences(initialContexts, new Object[] { diffInit,
190:                        diffInitA, diffInitB }, otherInitialContexts,
191:                        new Object[] { diffOtherInit, diffOtherInitA,
192:                                diffOtherInitB });
193:
194:                initC.addDifference(diffInitC);
195:                checkDifferences(initialContexts, new Object[] { diffInit,
196:                        diffInitA, diffInitB, diffInitC },
197:                        otherInitialContexts, new Object[] { diffOtherInit,
198:                                diffOtherInitA, diffOtherInitB });
199:                otherInitC.addDifference(diffOtherInitC);
200:                checkDifferences(initialContexts, new Object[] { diffInit,
201:                        diffInitA, diffInitB, diffInitC },
202:                        otherInitialContexts,
203:                        new Object[] { diffOtherInit, diffOtherInitA,
204:                                diffOtherInitB, diffOtherInitC });
205:
206:                try {
207:                    initial.addDifference(null);
208:                    fail("Didn't get NPE on adding null difference");
209:                } catch (NullPointerException npe) {
210:                    // ok
211:                }
212:
213:                try {
214:                    initial.addDifference(otherInitialDifference);
215:                    fail("Didn't get TCAE on add of difference with different context");
216:                } catch (TCAssertionError tcae) {
217:                    // ok
218:                }
219:
220:                try {
221:                    initial.addDifference(new MockDifference(initial.sub("a")));
222:                    fail("Didn't get TCAE on add of difference with different context");
223:                } catch (TCAssertionError tcae) {
224:                    // ok
225:                }
226:
227:                try {
228:                    initial.sub("a").addDifference(otherInitialDifference);
229:                    fail("Didn't get TCAE on add of difference with different context");
230:                } catch (TCAssertionError tcae) {
231:                    // ok
232:                }
233:            }
234:
235:            private void checkDifferences(DifferenceContext[] oneContexts,
236:                    Object[] expectedOneDifferences,
237:                    DifferenceContext[] twoContexts,
238:                    Object[] expectedTwoDifferences) {
239:                for (int i = 0; i < oneContexts.length; ++i) {
240:                    assertEqualsOrdered(expectedOneDifferences, oneContexts[i]
241:                            .getDifferences());
242:                    if (expectedOneDifferences.length > 0)
243:                        assertTrue(oneContexts[i].hasDifferences());
244:                    else
245:                        assertFalse(oneContexts[i].hasDifferences());
246:                    assertEquals(expectedOneDifferences.length, oneContexts[i]
247:                            .countDifferences());
248:                }
249:
250:                for (int i = 0; i < twoContexts.length; ++i) {
251:                    assertEqualsOrdered(expectedTwoDifferences, twoContexts[i]
252:                            .getDifferences());
253:                    if (expectedTwoDifferences.length > 0)
254:                        assertTrue(twoContexts[i].hasDifferences());
255:                    else
256:                        assertFalse(twoContexts[i].hasDifferences());
257:                    assertEquals(expectedTwoDifferences.length, twoContexts[i]
258:                            .countDifferences());
259:                }
260:
261:                boolean shouldBeEqual = new EqualsBuilder().append(
262:                        expectedOneDifferences, expectedTwoDifferences)
263:                        .isEquals();
264:                for (int i = 0; i < oneContexts.length; ++i) {
265:                    for (int j = 0; j < twoContexts.length; ++j) {
266:                        if (shouldBeEqual) {
267:                            assertEquals(oneContexts[i], twoContexts[i]);
268:                            assertEquals(twoContexts[i], oneContexts[i]);
269:                        } else {
270:                            assertFalse(oneContexts[i].equals(twoContexts[i]));
271:                            assertFalse(twoContexts[i].equals(oneContexts[i]));
272:                        }
273:                    }
274:                }
275:            }
276:
277:            public void testEquals() throws Exception {
278:                DifferenceContext initial = DifferenceContext.createInitial();
279:                DifferenceContext otherInitial = DifferenceContext
280:                        .createInitial();
281:
282:                assertEquals(initial, otherInitial);
283:                assertEquals(otherInitial, initial);
284:
285:                assertEquals(initial.sub("a"), otherInitial.sub("a"));
286:                assertEquals(initial.sub("a").sub("b"), otherInitial.sub("a")
287:                        .sub("b"));
288:
289:                assertEquals(initial, initial);
290:                assertFalse(initial.equals(initial.sub("a")));
291:                assertFalse(initial.sub("a").equals(initial));
292:
293:                assertEquals(initial.sub("a"), initial.sub("a"));
294:                assertFalse(initial.sub("a").equals(initial.sub("b")));
295:                assertFalse(initial.sub("a").equals(initial.sub("a").sub("b")));
296:
297:                assertEquals(initial.sub("a").sub("b"), initial.sub("a").sub(
298:                        "b"));
299:                assertFalse(initial.sub("a").sub("b").equals(initial.sub("a")));
300:                assertFalse(initial.sub("a").sub("b").equals(
301:                        initial.sub("a").sub("c")));
302:                assertFalse(initial.sub("a").sub("b").equals(
303:                        initial.sub("b").sub("a")));
304:            }
305:
306:        }
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