Source Code Cross Referenced for AnnotatedElementTestFrame.java in  » Apache-Harmony-Java-SE » org-package » org » apache » harmony » lang » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » org package » org.apache.harmony.lang 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:        package org.apache.harmony.lang;
018:
019:        import java.lang.annotation.Annotation;
020:        import java.lang.annotation.Retention;
021:        import java.lang.annotation.RetentionPolicy;
022:        import java.lang.reflect.AnnotatedElement;
023:        import java.util.Arrays;
024:        import java.util.List;
025:
026:        import notfound.MissingAntn;
027:        import notfound.MissingClass;
028:        import notfound.MissingEnum;
029:
030:        import junit.framework.TestCase;
031:
032:        /**
033:         * Basic framework for testing implementations of the 
034:         * {@link java.lang.reflect.AnnotatedElement AnnotatedElement} interface.
035:         * Expected usage: concrete test extending this class should only provide 
036:         * objects to be tested, via realization of several abstract methods.
037:         * @see #getElement1()
038:         * @see #getElement2()
039:         * @see #getElement3()
040:         * @see #getElement4()  
041:         * @see #getElement5()
042:         * @see #getElement6()
043:         * 
044:         * @author Alexey V. Varlamov
045:         * @version $Revision$
046:         */
047:        public abstract class AnnotatedElementTestFrame extends TestCase {
048:
049:            @Retention(RetentionPolicy.RUNTIME)
050:            public @interface TagAntn {
051:            }
052:
053:            @Retention(RetentionPolicy.RUNTIME)
054:            public @interface ValAntn {
055:                String value() default "<unspecified>";
056:            }
057:
058:            @Retention(RetentionPolicy.RUNTIME)
059:            public @interface None {
060:            }
061:
062:            @Retention(RetentionPolicy.RUNTIME)
063:            public @interface MissingClassValAntn {
064:                Class clss() default MissingClass.class;
065:
066:                Class[] clssArray() default MissingClass.class;
067:            }
068:
069:            @Retention(RetentionPolicy.RUNTIME)
070:            public @interface MissingTypeAntn {
071:                MissingAntn antn() default @MissingAntn;
072:
073:                MissingEnum enm() default MissingEnum.A;
074:
075:                MissingAntn[] antnArray() default @MissingAntn;
076:
077:                MissingEnum[] enmArray() default MissingEnum.A;
078:            }
079:
080:            /**
081:             * Provides an instance to be tested. The instance must be annotated
082:             * exactly by the single type {@link TagAntn TagAntn}.
083:             */
084:            protected abstract AnnotatedElement getElement1() throws Throwable;
085:
086:            /**
087:             * Provides an instance to be tested. The instance must be annotated
088:             * exactly by the two types {@link TagAntn TagAntn} and {@link ValAntn ValAntn}.
089:             */
090:            protected abstract AnnotatedElement getElement2() throws Throwable;
091:
092:            /**
093:             * Provides an instance to be tested. The instance must not be annotated.
094:             */
095:            protected abstract AnnotatedElement getElement3() throws Throwable;
096:
097:            /**
098:             * Provides an instance to be tested. The instance must be annotated
099:             * by the notfound.MissingAntn.
100:             */
101:            protected abstract AnnotatedElement getElement4() throws Throwable;
102:
103:            /**
104:             * Provides an instance to be tested. The instance must be annotated
105:             * by the MissingClassValAntn.
106:             */
107:            protected abstract AnnotatedElement getElement5() throws Throwable;
108:
109:            /**
110:             * Provides an instance to be tested. The instance must be annotated
111:             * by the MissingTypeAntn.
112:             */
113:            protected abstract AnnotatedElement getElement6() throws Throwable;
114:
115:            /**
116:             * getAnnotation(Class) should return
117:             * an annotation presented on the element1.
118:             */
119:            public void testGetAnnotation() throws Throwable {
120:                Annotation an = getElement1().getAnnotation(TagAntn.class);
121:                assertNotNull(an);
122:                assertSame(TagAntn.class, an.annotationType());
123:            }
124:
125:            /**
126:             * getAnnotation(Class) should return
127:             * an annotation presented on the element2.
128:             */
129:            public void testGetAnnotation2() throws Throwable {
130:                Annotation an = getElement2().getAnnotation(ValAntn.class);
131:                assertNotNull(an);
132:                assertSame(ValAntn.class, an.annotationType());
133:            }
134:
135:            /**
136:             * getAnnotation(Class) should return
137:             * null for unexpected annotation type.
138:             */
139:            public void testGetAnnotation_Negative() throws Throwable {
140:                assertNull("case 1", getElement2().getAnnotation(None.class));
141:                assertNull("case 2", getElement2().getAnnotation(None.class));
142:            }
143:
144:            /**
145:             * getAnnotation(Class) should return
146:             * null for non-annotated instance.
147:             */
148:            public void testGetAnnotation_Negative2() throws Throwable {
149:                assertNull("case 1", getElement3().getAnnotation(TagAntn.class));
150:                assertNull("case 2", getElement3().getAnnotation(None.class));
151:            }
152:
153:            /**
154:             * getAnnotation(Class) should throw NPE on null argument.
155:             */
156:            public void testGetAnnotation_Null() throws Throwable {
157:                try {
158:                    getElement1().getAnnotation(null);
159:                    fail("failed to throw NPE");
160:                } catch (NullPointerException ok) {
161:                }
162:            }
163:
164:            /**
165:             * getDeclaredAnnotations() should return
166:             * all annotations presented on the element1.
167:             */
168:            public void testGetDeclaredAnnotations() throws Throwable {
169:                Annotation[] an = getElement1().getDeclaredAnnotations();
170:                assertNotNull(an);
171:                assertEquals("number of Declared Annotations", 1, an.length);
172:                assertSame(TagAntn.class, an[0].annotationType());
173:            }
174:
175:            /**
176:             * getDeclaredAnnotations() should return
177:             * all annotations presented on the element2.
178:             */
179:            public void testGetDeclaredAnnotations2() throws Throwable {
180:                Annotation[] an = getElement2().getDeclaredAnnotations();
181:                assertNotNull(an);
182:                assertEquals("number of Declared Annotations", 2, an.length);
183:                List<Class> la = Arrays.asList(new Class[] {
184:                        an[0].annotationType(), an[1].annotationType() });
185:                assertTrue("1st annotation", la.contains(TagAntn.class));
186:                assertTrue("2nd annotation", la.contains(ValAntn.class));
187:            }
188:
189:            /**
190:             * getDeclaredAnnotations() should return
191:             * empty array for the element3.
192:             */
193:            public void testGetDeclaredAnnotations3() throws Throwable {
194:                Annotation[] an = getElement3().getDeclaredAnnotations();
195:                assertNotNull(an);
196:                assertEquals(0, an.length);
197:            }
198:
199:            /**
200:             * getDeclaredAnnotations() should return cloned array
201:             * which can be safely modified by a caller.
202:             */
203:            public void testGetDeclaredAnnotationsImmutable() throws Throwable {
204:                AnnotatedElement el = getElement1();
205:                Annotation[] an = el.getDeclaredAnnotations();
206:                assertNotNull(an);
207:                assertEquals("number of Declared Annotations", 1, an.length);
208:                assertSame(TagAntn.class, an[0].annotationType());
209:                an[0] = null;
210:                Annotation[] an2 = el.getDeclaredAnnotations();
211:                assertNotNull(an2);
212:                assertEquals("number of second Declared Annotations", 1,
213:                        an2.length);
214:                assertNotNull("array is not immutable", an2[0]);
215:                assertSame(TagAntn.class, an2[0].annotationType());
216:            }
217:
218:            /**
219:             * getAnnotations() should return
220:             * all annotations presented on the element1.
221:             */
222:            public void testGetAnnotations() throws Throwable {
223:                Annotation[] an = getElement1().getAnnotations();
224:                assertNotNull(an);
225:                assertEquals("number of Annotations", 1, an.length);
226:                assertSame(TagAntn.class, an[0].annotationType());
227:            }
228:
229:            /**
230:             * getAnnotations() should return
231:             * all annotations presented on the element2.
232:             */
233:            public void testGetAnnotations2() throws Throwable {
234:                Annotation[] an = getElement2().getAnnotations();
235:                assertNotNull(an);
236:                assertEquals("number of Annotations", 2, an.length);
237:                List<Class> la = Arrays.asList(new Class[] {
238:                        an[0].annotationType(), an[1].annotationType() });
239:                assertTrue("1st annotation", la.contains(TagAntn.class));
240:                assertTrue("2nd annotation", la.contains(ValAntn.class));
241:            }
242:
243:            /**
244:             * getAnnotations() should return
245:             * empty array for the element3.
246:             */
247:            public void testGetAnnotations3() throws Throwable {
248:                Annotation[] an = getElement3().getAnnotations();
249:                assertNotNull(an);
250:                assertEquals(0, an.length);
251:            }
252:
253:            /**
254:             * getAnnotations() should skip unresolved annotation
255:             * thus should return empty array for the element4.
256:             */
257:            public void testGetAnnotations4() throws Throwable {
258:                Annotation[] an = getElement4().getAnnotations();
259:                assertNotNull(an);
260:                assertEquals(0, an.length);
261:            }
262:
263:            /**
264:             * getAnnotations() should return
265:             * all annotations presented on the element5.
266:             */
267:            public void testGetAnnotations5() throws Throwable {
268:                Annotation[] an = getElement5().getAnnotations();
269:                assertNotNull(an);
270:                assertEquals("number of Annotations", 1, an.length);
271:                assertSame(MissingClassValAntn.class, an[0].annotationType());
272:            }
273:
274:            /**
275:             * getAnnotations() should throw NoClassDefFoundError
276:             * for the element6.
277:             */
278:            public void testGetAnnotations6() throws Throwable {
279:                try {
280:                    getElement6().getAnnotations();
281:                    fail("Misconfigured test");
282:                } catch (TypeNotPresentException tnpe) {
283:                    assertTrue("reported type name: " + tnpe.typeName(), tnpe
284:                            .typeName().matches("notfound.Missing(.)+"));
285:                } catch (NoClassDefFoundError e) {
286:                    assertTrue("reported type name: " + e.getMessage(), e
287:                            .getMessage().matches("notfound.Missing(.)+"));
288:                }
289:            }
290:
291:            /**
292:             * getAnnotations() should return cloned array
293:             * which can be safely modified by a caller.
294:             */
295:            public void testGetAnnotationsImmutable() throws Throwable {
296:                AnnotatedElement el = getElement1();
297:                Annotation[] an = el.getAnnotations();
298:                assertNotNull(an);
299:                assertEquals("number of Annotations", 1, an.length);
300:                assertSame(TagAntn.class, an[0].annotationType());
301:                an[0] = null;
302:                Annotation[] an2 = el.getAnnotations();
303:                assertNotNull(an2);
304:                assertEquals("number of second Annotations", 1, an2.length);
305:                assertNotNull("array is not immutable", an2[0]);
306:                assertSame(TagAntn.class, an2[0].annotationType());
307:            }
308:
309:            /**
310:             * isAnnotationPresent(Class) should return true
311:             * for the annotation(s) presented.
312:             */
313:            public void testIsAnnotationPresent() throws Throwable {
314:                assertTrue("case 1", getElement1().isAnnotationPresent(
315:                        TagAntn.class));
316:                assertTrue("case 2", getElement2().isAnnotationPresent(
317:                        TagAntn.class));
318:                assertTrue("case 3", getElement2().isAnnotationPresent(
319:                        ValAntn.class));
320:            }
321:
322:            /**
323:             * isAnnotationPresent(Class) should return false
324:             * for the annotation(s) not presented.
325:             */
326:            public void testIsAnnotationPresent_Negative() throws Throwable {
327:                assertFalse("case 1", getElement1().isAnnotationPresent(
328:                        ValAntn.class));
329:                assertFalse("case 2", getElement1().isAnnotationPresent(
330:                        None.class));
331:                assertFalse("case 3", getElement2().isAnnotationPresent(
332:                        None.class));
333:                assertFalse("case 4", getElement3().isAnnotationPresent(
334:                        TagAntn.class));
335:            }
336:
337:            /**
338:             * isAnnotationPresent(Class) should throw NPE on null argument
339:             */
340:            public void testIsAnnotationPresent_Null() throws Throwable {
341:                try {
342:                    getElement1().isAnnotationPresent(null);
343:                    fail("failed to throw NPE");
344:                } catch (NullPointerException ok) {
345:                }
346:            }
347:        }
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