Luis Sigal | 8da3e6e | 2011-02-24 17:22:33 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 5 | * use this file except in compliance with the License. You may obtain a copy of |
| 6 | * the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 12 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | * License for the specific language governing permissions and limitations under |
| 14 | * the License. |
| 15 | */ |
| 16 | package com.google.android.testing.mocking; |
| 17 | |
| 18 | import javassist.CannotCompileException; |
| 19 | |
| 20 | import junit.framework.TestCase; |
| 21 | |
| 22 | import org.easymock.EasyMock; |
| 23 | |
| 24 | import java.io.ByteArrayOutputStream; |
| 25 | import java.io.IOException; |
| 26 | import java.io.OutputStream; |
| 27 | import java.util.ArrayList; |
| 28 | import java.util.Arrays; |
| 29 | import java.util.HashMap; |
| 30 | import java.util.HashSet; |
| 31 | import java.util.List; |
| 32 | import java.util.Map; |
| 33 | import java.util.Set; |
| 34 | |
| 35 | import javax.annotation.processing.Filer; |
| 36 | import javax.annotation.processing.Messager; |
| 37 | import javax.annotation.processing.ProcessingEnvironment; |
| 38 | import javax.annotation.processing.RoundEnvironment; |
| 39 | import javax.lang.model.element.AnnotationMirror; |
| 40 | import javax.lang.model.element.AnnotationValue; |
| 41 | import javax.lang.model.element.Element; |
| 42 | import javax.lang.model.element.ExecutableElement; |
| 43 | import javax.lang.model.type.DeclaredType; |
| 44 | import javax.lang.model.type.TypeKind; |
| 45 | import javax.lang.model.type.TypeMirror; |
| 46 | import javax.lang.model.type.TypeVisitor; |
| 47 | import javax.tools.JavaFileObject; |
| 48 | |
| 49 | /** |
| 50 | * @author swoodward@google.com (Stephen Woodward) |
| 51 | */ |
| 52 | public class UsesMocksProcessorTest extends TestCase { |
| 53 | |
| 54 | private Set<? extends Element> getAnnotatedElementsSet(Class<?>... classes) { |
| 55 | Set<Element> set = new HashSet<Element>(); |
| 56 | for (Class<?> clazz : classes) { |
| 57 | set.add(getMockElement(clazz)); |
| 58 | } |
| 59 | return set; |
| 60 | } |
| 61 | |
| 62 | @SuppressWarnings("unchecked") |
| 63 | private Element getMockElement(Class<?> clazz) { |
| 64 | Element mockElement = EasyMock.createNiceMock(Element.class); |
| 65 | EasyMock.expect(mockElement.getAnnotationMirrors()).andReturn(getMockAnnotationMirrors(clazz)) |
| 66 | .anyTimes(); |
| 67 | EasyMock.replay(mockElement); |
| 68 | return mockElement; |
| 69 | } |
| 70 | |
| 71 | @SuppressWarnings("unchecked") |
| 72 | private List getMockAnnotationMirrors(Class<?> clazz) { |
| 73 | List<AnnotationMirror> mockMirrorList = new ArrayList<AnnotationMirror>(); |
| 74 | AnnotationMirror mockMirror = EasyMock.createNiceMock(AnnotationMirror.class); |
| 75 | EasyMock.expect(mockMirror.getAnnotationType()).andReturn(getMockAnnotationType()).anyTimes(); |
| 76 | EasyMock.expect(mockMirror.getElementValues()).andReturn(getMockElementValuesMap(clazz)) |
| 77 | .anyTimes(); |
| 78 | EasyMock.replay(mockMirror); |
| 79 | mockMirrorList.add(mockMirror); |
| 80 | return mockMirrorList; |
| 81 | } |
| 82 | |
| 83 | @SuppressWarnings("unchecked") |
| 84 | private Map getMockElementValuesMap(Class<?> clazz) { |
| 85 | Map mockValuesMap = new HashMap(); |
| 86 | mockValuesMap.put(getMockExecutableElement(), getMockAnnotationValue(clazz)); |
| 87 | return mockValuesMap; |
| 88 | } |
| 89 | |
| 90 | private AnnotationValue getMockAnnotationValue(Class<?> clazz) { |
| 91 | AnnotationValue mockValue = EasyMock.createMock(AnnotationValue.class); |
| 92 | EasyMock.expect(mockValue.getValue()).andReturn( |
| 93 | Arrays.asList(new String[] {clazz.getName() + ".class"})).anyTimes(); |
| 94 | EasyMock.replay(mockValue); |
| 95 | return mockValue; |
| 96 | } |
| 97 | |
| 98 | private ExecutableElement getMockExecutableElement() { |
| 99 | ExecutableElement mockElement = EasyMock.createNiceMock(ExecutableElement.class); |
| 100 | EasyMock.replay(mockElement); |
| 101 | return mockElement; |
| 102 | } |
| 103 | |
| 104 | private DeclaredType getMockAnnotationType() { |
| 105 | return new DeclaredType() { |
| 106 | @Override |
| 107 | public String toString() { |
| 108 | return UsesMocks.class.getName(); |
| 109 | } |
| 110 | |
| 111 | @Override |
| 112 | public Element asElement() { |
| 113 | return null; |
| 114 | } |
| 115 | |
| 116 | @Override |
| 117 | public TypeMirror getEnclosingType() { |
| 118 | return null; |
| 119 | } |
| 120 | |
| 121 | @Override |
| 122 | public List<? extends TypeMirror> getTypeArguments() { |
| 123 | return null; |
| 124 | } |
| 125 | |
| 126 | @Override |
| 127 | public <R, P> R accept(TypeVisitor<R, P> v, P p) { |
| 128 | return null; |
| 129 | } |
| 130 | |
| 131 | @Override |
| 132 | public TypeKind getKind() { |
| 133 | return null; |
| 134 | } |
| 135 | }; |
| 136 | } |
| 137 | |
| 138 | private UsesMocksProcessor getProcessor() { |
| 139 | return getProcessor(getMockProcessingEnvironment()); |
| 140 | } |
| 141 | |
| 142 | private UsesMocksProcessor getProcessor(ProcessingEnvironment processingEnv) { |
| 143 | UsesMocksProcessor processor = new UsesMocksProcessor(); |
| 144 | processor.init(processingEnv); |
| 145 | ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| 146 | processor.logger = new ProcessorLogger(outputStream, processingEnv); |
| 147 | return processor; |
| 148 | } |
| 149 | |
| 150 | private ProcessingEnvironment getMockProcessingEnvironment(Filer mockFiler) { |
| 151 | ProcessingEnvironment mockEnvironment = EasyMock.createNiceMock(ProcessingEnvironment.class); |
| 152 | EasyMock.expect(mockEnvironment.getMessager()).andReturn(getMockMessager()).anyTimes(); |
| 153 | EasyMock.expect(mockEnvironment.getFiler()).andReturn(mockFiler).anyTimes(); |
| 154 | EasyMock.expect(mockEnvironment.getOptions()).andReturn(getMockOptions()).anyTimes(); |
| 155 | EasyMock.replay(mockEnvironment); |
| 156 | return mockEnvironment; |
| 157 | } |
| 158 | |
| 159 | private Map<String, String> getMockOptions() { |
| 160 | Map<String, String> map = new HashMap<String, String>(); |
| 161 | map.put("bin_dir", "."); |
| 162 | map.put("logfile", "logfile"); |
| 163 | return map; |
| 164 | } |
| 165 | |
| 166 | private ProcessingEnvironment getMockProcessingEnvironment() { |
| 167 | return getMockProcessingEnvironment(getMockFiler()); |
| 168 | } |
| 169 | |
| 170 | private Messager getMockMessager() { |
| 171 | Messager mockMessager = EasyMock.createNiceMock(Messager.class); |
| 172 | EasyMock.replay(mockMessager); |
| 173 | return mockMessager; |
| 174 | } |
| 175 | |
| 176 | private Filer getMockFiler() { |
| 177 | try { |
| 178 | return getMockFiler(getMockFileObject()); |
| 179 | } catch (IOException e) { |
| 180 | // Can't happen |
| 181 | throw new RuntimeException(e); |
| 182 | } |
| 183 | } |
| 184 | |
| 185 | private Filer getMockFiler(JavaFileObject mockFileObject) { |
| 186 | Filer mockFiler = EasyMock.createNiceMock(Filer.class); |
| 187 | try { |
| 188 | EasyMock.expect(mockFiler.createClassFile((CharSequence) EasyMock.anyObject())).andReturn( |
| 189 | mockFileObject).anyTimes(); |
| 190 | } catch (IOException e) { |
| 191 | // Can't happen |
| 192 | throw new RuntimeException(e); |
| 193 | } |
| 194 | EasyMock.replay(mockFiler); |
| 195 | return mockFiler; |
| 196 | } |
| 197 | |
| 198 | private JavaFileObject getMockFileObject() throws IOException { |
| 199 | return getMockFileObject(new ByteArrayOutputStream()); |
| 200 | } |
| 201 | |
| 202 | private JavaFileObject getMockFileObject(OutputStream outStream) throws IOException { |
| 203 | JavaFileObject mockFileObject = EasyMock.createNiceMock(JavaFileObject.class); |
| 204 | EasyMock.expect(mockFileObject.openOutputStream()).andReturn(outStream).anyTimes(); |
| 205 | EasyMock.replay(mockFileObject); |
| 206 | return mockFileObject; |
| 207 | } |
| 208 | |
| 209 | private RoundEnvironment getMockRoundEnvironment(Set<? extends Element> elementsWithAnnotation) { |
| 210 | return getMockRoundEnvironment(elementsWithAnnotation, false); |
| 211 | } |
| 212 | |
| 213 | @SuppressWarnings("unchecked") |
| 214 | private RoundEnvironment getMockRoundEnvironment(Set<? extends Element> elementsWithAnnotation, |
| 215 | boolean finishedProcessing) { |
| 216 | RoundEnvironment mockEnv = EasyMock.createNiceMock(RoundEnvironment.class); |
| 217 | EasyMock.expect(mockEnv.getElementsAnnotatedWith(UsesMocks.class)).andReturn( |
| 218 | (Set) elementsWithAnnotation).anyTimes(); |
| 219 | EasyMock.expect(mockEnv.processingOver()).andReturn(finishedProcessing).anyTimes(); |
| 220 | EasyMock.replay(mockEnv); |
| 221 | return mockEnv; |
| 222 | } |
| 223 | |
| 224 | public void testGetClassMocks() throws IOException, CannotCompileException { |
| 225 | List<Class<?>> classesToMock = new ArrayList<Class<?>>(); |
| 226 | classesToMock.add(TestCase.class); |
| 227 | List<String> expectedMocks = |
| 228 | new ArrayList<String>(Arrays.asList(new String[] { |
| 229 | "genmocks." + TestCase.class.getName() + "DelegateInterface", |
| 230 | "genmocks." + TestCase.class.getName() + "DelegateSubclass"})); |
| 231 | Set<GeneratedClassFile> mockedClasses = |
| 232 | getProcessor().getClassMocks(classesToMock, true); |
| 233 | |
| 234 | assertEquals(2, mockedClasses.size()); |
| 235 | for (GeneratedClassFile clazz : mockedClasses) { |
| 236 | assertTrue(expectedMocks.contains(clazz.getClassName())); |
| 237 | expectedMocks.remove(clazz.getClassName()); |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | public void testWriteMocks() throws IOException, CannotCompileException { |
| 242 | List<Class<?>> classesToMock = new ArrayList<Class<?>>(); |
| 243 | classesToMock.add(TestCase.class); |
| 244 | Set<GeneratedClassFile> mockedClassesSet = |
| 245 | getProcessor().getClassMocks(classesToMock, true); |
| 246 | ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); |
| 247 | |
| 248 | getProcessor(getMockProcessingEnvironment(getMockFiler(getMockFileObject(outputStream)))) |
| 249 | .writeMocks(mockedClassesSet); |
| 250 | |
| 251 | String output = new String(outputStream.toByteArray()); |
| 252 | for (GeneratedClassFile mockClass : mockedClassesSet) { |
| 253 | String expected = new String(mockClass.getContents()); |
| 254 | assertTrue(output.contains(expected)); |
| 255 | output = output.replace(expected, ""); |
| 256 | } |
| 257 | assertEquals(0, output.length()); |
| 258 | } |
| 259 | |
| 260 | public void testProcess() { |
| 261 | assertFalse(getProcessor().process(null, |
| 262 | getMockRoundEnvironment(getAnnotatedElementsSet(TestCase.class)))); |
| 263 | assertFalse(getProcessor().process(null, |
| 264 | getMockRoundEnvironment(getAnnotatedElementsSet(TestCase.class), true))); |
| 265 | } |
| 266 | |
| 267 | public void testFindClassesToMock() { |
| 268 | Set<? extends Element> annotatedElements = getAnnotatedElementsSet(Set.class, TestCase.class); |
| 269 | List<Class<?>> classesList = getProcessor().findClassesToMock(annotatedElements); |
| 270 | |
| 271 | assertEquals(annotatedElements.size(), classesList.size()); |
| 272 | assertTrue(classesList.contains(Set.class)); |
| 273 | assertTrue(classesList.contains(TestCase.class)); |
| 274 | } |
| 275 | } |