Best junit code snippet using junit.framework.ComparisonCompactor
Source: ComparisonCompactor.java
...10 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)11 at jadx.api.JavaClass.decompile(JavaClass.java:62)12 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)13 */14public class ComparisonCompactor {15 private static final String DELTA_END = "]";16 private static final String DELTA_START = "[";17 private static final String ELLIPSIS = "...";18 private String fActual;19 private int fContextLength;20 private String fExpected;21 private int fPrefix;22 private int fSuffix;23 /* JADX ERROR: Method load error24 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e6 in method: junit.framework.ComparisonCompactor.<init>(int, java.lang.String, java.lang.String):void, dex: 25 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)26 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)27 at jadx.core.ProcessClass.process(ProcessClass.java:29)28 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)29 at jadx.api.JavaClass.decompile(JavaClass.java:62)30 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)31 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e632 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)33 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)34 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)35 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)36 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)37 ... 5 more38 */39 public ComparisonCompactor(int r1, java.lang.String r2, java.lang.String r3) {40 /*41 // Can't load method instructions: Load method exception: bogus opcode: 00e6 in method: junit.framework.ComparisonCompactor.<init>(int, java.lang.String, java.lang.String):void, dex: 42 */43 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.<init>(int, java.lang.String, java.lang.String):void");44 }45 /* JADX ERROR: Method load error46 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.areStringsEqual():boolean, dex: 47 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)48 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)49 at jadx.core.ProcessClass.process(ProcessClass.java:29)50 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)51 at jadx.api.JavaClass.decompile(JavaClass.java:62)52 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)53 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e554 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)55 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)56 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)57 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)58 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)59 ... 5 more60 */61 private boolean areStringsEqual() {62 /*63 // Can't load method instructions: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.areStringsEqual():boolean, dex: 64 */65 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.areStringsEqual():boolean");66 }67 /* JADX ERROR: Method load error68 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e9 in method: junit.framework.ComparisonCompactor.compactString(java.lang.String):java.lang.String, dex: 69 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)70 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)71 at jadx.core.ProcessClass.process(ProcessClass.java:29)72 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)73 at jadx.api.JavaClass.decompile(JavaClass.java:62)74 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)75 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e976 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)77 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)78 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)79 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)80 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)81 ... 5 more82 */83 private java.lang.String compactString(java.lang.String r1) {84 /*85 // Can't load method instructions: Load method exception: bogus opcode: 00e9 in method: junit.framework.ComparisonCompactor.compactString(java.lang.String):java.lang.String, dex: 86 */87 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.compactString(java.lang.String):java.lang.String");88 }89 /* JADX ERROR: Method load error90 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e3 in method: junit.framework.ComparisonCompactor.computeCommonPrefix():java.lang.String, dex: 91 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)92 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)93 at jadx.core.ProcessClass.process(ProcessClass.java:29)94 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)95 at jadx.api.JavaClass.decompile(JavaClass.java:62)96 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)97 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e398 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)99 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)100 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)101 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)102 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)103 ... 5 more104 */105 private java.lang.String computeCommonPrefix() {106 /*107 // Can't load method instructions: Load method exception: bogus opcode: 00e3 in method: junit.framework.ComparisonCompactor.computeCommonPrefix():java.lang.String, dex: 108 */109 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.computeCommonPrefix():java.lang.String");110 }111 /* JADX ERROR: Method load error112 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.computeCommonSuffix():java.lang.String, dex: 113 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)114 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)115 at jadx.core.ProcessClass.process(ProcessClass.java:29)116 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)117 at jadx.api.JavaClass.decompile(JavaClass.java:62)118 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)119 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e5120 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)121 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)122 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)123 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)124 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)125 ... 5 more126 */127 private java.lang.String computeCommonSuffix() {128 /*129 // Can't load method instructions: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.computeCommonSuffix():java.lang.String, dex: 130 */131 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.computeCommonSuffix():java.lang.String");132 }133 /* JADX ERROR: Method load error134 jadx.core.utils.exceptions.DecodeException: Load method exception: null in method: junit.framework.ComparisonCompactor.findCommonPrefix():void, dex: in method: junit.framework.ComparisonCompactor.findCommonPrefix():void, dex: 135 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)136 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)137 at jadx.core.ProcessClass.process(ProcessClass.java:29)138 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)139 at jadx.api.JavaClass.decompile(JavaClass.java:62)140 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)141 Caused by: jadx.core.utils.exceptions.DecodeException: null in method: junit.framework.ComparisonCompactor.findCommonPrefix():void, dex: 142 at jadx.core.dex.instructions.InsnDecoder.decodeInsns(InsnDecoder.java:51)143 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:103)144 ... 5 more145 Caused by: java.io.EOFException146 at com.android.dx.io.instructions.ShortArrayCodeInput.read(ShortArrayCodeInput.java:54)147 at com.android.dx.io.instructions.ShortArrayCodeInput.readInt(ShortArrayCodeInput.java:62)148 at com.android.dx.io.instructions.InstructionCodec$22.decode(InstructionCodec.java:490)149 at jadx.core.dex.instructions.InsnDecoder.decodeRawInsn(InsnDecoder.java:66)150 at jadx.core.dex.instructions.InsnDecoder.decodeInsns(InsnDecoder.java:48)151 ... 6 more152 */153 private void findCommonPrefix() {154 /*155 // Can't load method instructions: Load method exception: null in method: junit.framework.ComparisonCompactor.findCommonPrefix():void, dex: in method: junit.framework.ComparisonCompactor.findCommonPrefix():void, dex: 156 */157 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.findCommonPrefix():void");158 }159 /* JADX ERROR: Method load error160 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.findCommonSuffix():void, dex: 161 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)162 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)163 at jadx.core.ProcessClass.process(ProcessClass.java:29)164 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)165 at jadx.api.JavaClass.decompile(JavaClass.java:62)166 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)167 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e5168 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)169 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)170 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)171 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)172 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)173 ... 5 more174 */175 private void findCommonSuffix() {176 /*177 // Can't load method instructions: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.findCommonSuffix():void, dex: 178 */179 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.findCommonSuffix():void");180 }181 /* JADX ERROR: Method load error182 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e9 in method: junit.framework.ComparisonCompactor.format(java.lang.String, java.lang.Object, java.lang.Object):java.lang.String, dex: 183 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)184 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)185 at jadx.core.ProcessClass.process(ProcessClass.java:29)186 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)187 at jadx.api.JavaClass.decompile(JavaClass.java:62)188 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)189 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e9190 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)191 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)192 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)193 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)194 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)195 ... 5 more196 */197 private static java.lang.String format(java.lang.String r1, java.lang.Object r2, java.lang.Object r3) {198 /*199 // Can't load method instructions: Load method exception: bogus opcode: 00e9 in method: junit.framework.ComparisonCompactor.format(java.lang.String, java.lang.Object, java.lang.Object):java.lang.String, dex: 200 */201 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.format(java.lang.String, java.lang.Object, java.lang.Object):java.lang.String");202 }203 /* JADX ERROR: Method load error204 jadx.core.utils.exceptions.DecodeException: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.compact(java.lang.String):java.lang.String, dex: 205 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:118)206 at jadx.core.dex.nodes.ClassNode.load(ClassNode.java:248)207 at jadx.core.ProcessClass.process(ProcessClass.java:29)208 at jadx.api.JadxDecompiler.processClass(JadxDecompiler.java:292)209 at jadx.api.JavaClass.decompile(JavaClass.java:62)210 at jadx.api.JadxDecompiler.lambda$appendSourcesSave$0(JadxDecompiler.java:200)211 Caused by: java.lang.IllegalArgumentException: bogus opcode: 00e5212 at com.android.dx.io.OpcodeInfo.get(OpcodeInfo.java:1227)213 at com.android.dx.io.OpcodeInfo.getName(OpcodeInfo.java:1234)214 at jadx.core.dex.instructions.InsnDecoder.decode(InsnDecoder.java:581)215 at jadx.core.dex.instructions.InsnDecoder.process(InsnDecoder.java:74)216 at jadx.core.dex.nodes.MethodNode.load(MethodNode.java:104)217 ... 5 more218 */219 public java.lang.String compact(java.lang.String r1) {220 /*221 // Can't load method instructions: Load method exception: bogus opcode: 00e5 in method: junit.framework.ComparisonCompactor.compact(java.lang.String):java.lang.String, dex: 222 */223 throw new UnsupportedOperationException("Method not decompiled: junit.framework.ComparisonCompactor.compact(java.lang.String):java.lang.String");224 }225}...
Source: ComparisonCompactorTest.java
1package junit.tests.framework;2import junit.framework.ComparisonCompactor;3import junit.framework.TestCase;4public class ComparisonCompactorTest extends TestCase {5 public void testMessage() {6 String failure= new ComparisonCompactor(0, "b", "c").compact("a");7 assertTrue("a expected:<[b]> but was:<[c]>".equals(failure));8 }9 public void testStartSame() {10 String failure= new ComparisonCompactor(1, "ba", "bc").compact(null);11 assertEquals("expected:<b[a]> but was:<b[c]>", failure);12 }13 public void testEndSame() {14 String failure= new ComparisonCompactor(1, "ab", "cb").compact(null);15 assertEquals("expected:<[a]b> but was:<[c]b>", failure);16 }17 public void testSame() {18 String failure= new ComparisonCompactor(1, "ab", "ab").compact(null);19 assertEquals("expected:<ab> but was:<ab>", failure);20 }21 public void testNoContextStartAndEndSame() {22 String failure= new ComparisonCompactor(0, "abc", "adc").compact(null);23 assertEquals("expected:<...[b]...> but was:<...[d]...>", failure);24 }25 public void testStartAndEndContext() {26 String failure= new ComparisonCompactor(1, "abc", "adc").compact(null);27 assertEquals("expected:<a[b]c> but was:<a[d]c>", failure);28 }29 public void testStartAndEndContextWithEllipses() {30 String failure= new ComparisonCompactor(1, "abcde", "abfde").compact(null);31 assertEquals("expected:<...b[c]d...> but was:<...b[f]d...>", failure);32 }33 public void testComparisonErrorStartSameComplete() {34 String failure= new ComparisonCompactor(2, "ab", "abc").compact(null);35 assertEquals("expected:<ab[]> but was:<ab[c]>", failure);36 }37 public void testComparisonErrorEndSameComplete() {38 String failure= new ComparisonCompactor(0, "bc", "abc").compact(null);39 assertEquals("expected:<[]...> but was:<[a]...>", failure);40 }41 42 public void testComparisonErrorEndSameCompleteContext() {43 String failure= new ComparisonCompactor(2, "bc", "abc").compact(null);44 assertEquals("expected:<[]bc> but was:<[a]bc>", failure);45 }46 public void testComparisonErrorOverlapingMatches() {47 String failure= new ComparisonCompactor(0, "abc", "abbc").compact(null);48 assertEquals("expected:<...[]...> but was:<...[b]...>", failure);49 }50 public void testComparisonErrorOverlapingMatchesContext() {51 String failure= new ComparisonCompactor(2, "abc", "abbc").compact(null);52 assertEquals("expected:<ab[]c> but was:<ab[b]c>", failure);53 }54 public void testComparisonErrorOverlapingMatches2() {55 String failure= new ComparisonCompactor(0, "abcdde", "abcde").compact(null);56 assertEquals("expected:<...[d]...> but was:<...[]...>", failure);57 }58 public void testComparisonErrorOverlapingMatches2Context() {59 String failure= new ComparisonCompactor(2, "abcdde", "abcde").compact(null);60 assertEquals("expected:<...cd[d]e> but was:<...cd[]e>", failure);61 }62 public void testComparisonErrorWithActualNull() {63 String failure= new ComparisonCompactor(0, "a", null).compact(null);64 assertEquals("expected:<a> but was:<null>", failure);65 }66 67 public void testComparisonErrorWithActualNullContext() {68 String failure= new ComparisonCompactor(2, "a", null).compact(null);69 assertEquals("expected:<a> but was:<null>", failure);70 }71 public void testComparisonErrorWithExpectedNull() {72 String failure= new ComparisonCompactor(0, null, "a").compact(null);73 assertEquals("expected:<null> but was:<a>", failure);74 }75 76 public void testComparisonErrorWithExpectedNullContext() {77 String failure= new ComparisonCompactor(2, null, "a").compact(null);78 assertEquals("expected:<null> but was:<a>", failure);79 }80 81 public void testBug609972() {82 String failure= new ComparisonCompactor(10, "S&P500", "0").compact(null);83 assertEquals("expected:<[S&P50]0> but was:<[]0>", failure);84 }85}...
ComparisonCompactor
Using AI Code Generation
1package com.example;2import junit.framework.ComparisonCompactor;3public class ComparisonCompactorTest {4 public static void main(String[] args) {5 ComparisonCompactor cc = new ComparisonCompactor(0, "b", "c");6 System.out.println(cc.compact("b"));7 }8}9package com.example;10import junit.framework.ComparisonCompactor;11public class ComparisonCompactorTest {12 public static void main(String[] args) {13 ComparisonCompactor cc = new ComparisonCompactor(0, "a", "b");14 System.out.println(cc.compact("a"));15 }16}17package com.example;18import junit.framework.ComparisonCompactor;19public class ComparisonCompactorTest {20 public static void main(String[] args) {21 ComparisonCompactor cc = new ComparisonCompactor(1, "a", "b");22 System.out.println(cc.compact("a"));23 }24}25package com.example;26import junit.framework.ComparisonCompactor;27public class ComparisonCompactorTest {28 public static void main(String[] args) {29 ComparisonCompactor cc = new ComparisonCompactor(2, "a", "b");30 System.out.println(cc.compact("a"));31 }32}
ComparisonCompactor
Using AI Code Generation
1package com.javacodegeeks.junit;2import junit.framework.ComparisonCompactor;3import org.junit.Test;4import static org.junit.Assert.assertEquals;5public class ComparisonCompactorTest {6 public void testMessage() {7 ComparisonCompactor comparisonCompactor = new ComparisonCompactor(0, "b", "c");8 comparisonCompactor.compact("a");9 assertEquals("a expected:<[b]> but was:<[c]>", comparisonCompactor.getMessage());10 }11}
ComparisonCompactor
Using AI Code Generation
1public class ComparisonCompactor {2 private static final String ELLIPSIS = "...";3 private static final String DELTA_END = "]";4 private static final String DELTA_START = "[";5 private int contextLength;6 private String expected;7 private String actual;8 private int prefix;9 private int suffix;10 public ComparisonCompactor(int contextLength, String expected, String actual) {11 this.contextLength = contextLength;12 this.expected = expected;13 this.actual = actual;14 }15 public String compact(String message) {16 if (expected == null || actual == null || areStringsEqual()) {17 return Assert.format(message, expected, actual);18 } else {19 findCommonPrefix();20 findCommonSuffix();21 String expectedCompacted = compactString(expected);22 String actualCompacted = compactString(actual);23 return Assert.format(message, expectedCompacted, actualCompacted);24 }25 }26 private boolean areStringsEqual() {27 return expected.equals(actual);28 }29 private void findCommonPrefix() {30 prefix = 0;31 int end = Math.min(expected.length(), actual.length());32 for (; prefix < end; prefix++) {33 if (expected.charAt(prefix) != actual.charAt(prefix)) {34 break;35 }36 }37 }38 private void findCommonSuffix() {39 int expectedSuffix = expected.length() - 1;40 int actualSuffix = actual.length() - 1;41 for (; actualSuffix >= prefix && expectedSuffix >= prefix; actualSuffix--, expectedSuffix--) {42 if (expected.charAt(expectedSuffix) != actual.charAt(actualSuffix)) {43 break;44 }45 }46 suffix = expected.length() - expectedSuffix;47 }48 private String compactString(String source) {49 String result = DELTA_START + source.substring(prefix, source.length() - suffix + 1) + DELTA_END;50 if (prefix > 0) {51 result = computeCommonPrefix() + result;52 }53 if (suffix > 0) {54 result = result + computeCommonSuffix();55 }56 return result;57 }58 private String computeCommonPrefix() {59 return (prefix > contextLength ? ELLIPSIS : "") + expected.substring(Math.max(0, prefix - contextLength), prefix);60 }61 private String computeCommonSuffix() {
ComparisonCompactor
Using AI Code Generation
1import org.junit.ComparisonFailure;2public class ComparisonFailureExample {3 public static void main(String[] args) {4 String expected = "abc";5 String actual = "xyz";6 ComparisonFailure failure = new ComparisonFailure("failure", expected, actual);7 String compactedFailure = failure.getMessage();8 System.out.println(compactedFailure);9 }10}11Related posts: JUnit 4 @Test(expected = Exception.class) Example JUnit 4 Test Class Example JUnit 4 Test Suite Example JUnit 4 Parameterized Test Example JUnit 4 @Ignore Test Example JUnit 4 @Before and @After Test Example JUnit 4 @BeforeClass and @AfterClass Test Example JUnit 4 @Rule Test Example JUnit 4 @Test(timeout = 1000) Example JUnit 4 @RunWith Test Example JUnit 4 @Category Test Example JUnit 4 @Parameters Test Example JUnit 4 @Parameterized Test Example JUnit 4 @TestFactory Test Example JUnit 4 @TestTemplate Test Example JUnit 4 @ExtendWith Test Example JUnit 4 @Disabled Test Example JUnit 4 @Tag Test Example JUnit 4 @DisplayName Test Example JUnit 4 @RepeatedTest Test Example JUnit 4 @Nested Test Example JUnit 4 @RegisterExtension Test Example JUnit 4 @TestInstance Test Example JUnit 4 @TestInfo Test Example JUnit 4 @TestReporter Test Example JUnit 4 @Timeout Test Example JUnit 4 @ValueSource Test Example JUnit 4 @EnumSource Test Example JUnit 4 @CsvSource Test Example JUnit 4 @CsvFileSource Test Example JUnit 4 @MethodSource Test Example JUnit 4 @ArgumentsSource Test Example JUnit 4 @ParameterizedTest Test Example JUnit 4 @NullAndEmptySource Test Example
ComparisonCompactor
Using AI Code Generation
1package com.journaldev.compactor;2import junit.framework.ComparisonCompactor;3public class ComparisonCompactorTest {4 public static void main(String[] args) {5 String expected = "This is a test";6 String actual = "This is a test!";7 ComparisonCompactor compactor = new ComparisonCompactor(10, expected, actual);8 System.out.println(compactor.compact("String comparison failed"));9 }10}
ComparisonCompactor
Using AI Code Generation
1package org.hamcrest.core;2import java.util.Arrays;3import junit.framework.AssertionFailedError;4import junit.framework.ComparisonCompactor;5import org.hamcrest.BaseMatcher;6import org.hamcrest.Description;7import org.hamcrest.Factory;8import org.hamcrest.Matcher;9public class IsEqual<T> extends BaseMatcher<T> {10 private final T expectedValue;11 public IsEqual(T value) {12 expectedValue = value;13 }14 public boolean matches(Object actualValue) {15 return areEqual(actualValue, expectedValue);16 }17 public void describeTo(Description description) {18 description.appendValue(expectedValue);19 }20 public void describeMismatch(Object item, Description description) {21 if (areEqual(item, expectedValue)) {22 super.describeMismatch(item, description);23 } else {24 ComparisonCompactor compactor = new ComparisonCompactor(20, expectedValue, item);25 description.appendText(compactor.compact(superMismatchDescription(item)));26 }27 }28 private boolean areEqual(Object actual, Object expected) {29 return expected == null ? actual == null : expected.equals(actual);30 }31 private String superMismatchDescription(Object item) {32 return super.mismatchDescription(item).toString();33 }34 public static <T> Matcher<T> equalTo(T operand) {35 return new IsEqual<T>(operand);36 }37 public static <T> Matcher<T> equalTo(T operand, T... others) {38 return new IsEqual<T>(Arrays.asList(operand, others));39 }40}
JUnit 4 Expected Exception type
java: how to mock Calendar.getInstance()?
Changing names of parameterized tests
Mocking a class vs. mocking its interface
jUnit ignore @Test methods from base class
Important frameworks/tools to learn
Unit testing a Java Servlet
Meaning of delta or epsilon argument of assertEquals for double values
Different teardown for each @Test in jUnit
Best way to automagically migrate tests from JUnit 3 to JUnit 4?
There's actually an alternative to the @Test(expected=Xyz.class)
in JUnit 4.7 using Rule
and ExpectedException
In your test case you declare an ExpectedException
annotated with @Rule
, and assign it a default value of ExpectedException.none()
. Then in your test that expects an exception you replace the value with the actual expected value. The advantage of this is that without using the ugly try/catch method, you can further specify what the message within the exception was
@Rule public ExpectedException thrown= ExpectedException.none();
@Test
public void myTest() {
thrown.expect( Exception.class );
thrown.expectMessage("Init Gold must be >= 0");
rodgers = new Pirate("Dread Pirate Rodgers" , -100);
}
Using this method, you might be able to test for the message in the generic exception to be something specific.
ADDITION
Another advantage of using ExpectedException
is that you can more precisely scope the exception within the context of the test case. If you are only using @Test(expected=Xyz.class)
annotation on the test, then the Xyz exception can be thrown anywhere in the test code -- including any test setup or pre-asserts within the test method. This can lead to a false positive.
Using ExpectedException, you can defer specifying the thrown.expect(Xyz.class)
until after any setup and pre-asserts, just prior to actually invoking the method under test. Thus, you more accurately scope the exception to be thrown by the actual method invocation rather than any of the test fixture itself.
JUnit 5 NOTE:
JUnit 5 JUnit Jupiter has removed @Test(expected=...)
, @Rule
and ExpectedException
altogether. They are replaced with the new assertThrows()
, which requires the use of Java 8 and lambda syntax. ExpectedException
is still available for use in JUnit 5 through JUnit Vintage. Also JUnit Jupiter will also continue to support JUnit 4 ExpectedException
through use of the junit-jupiter-migrationsupport module, but only if you add an additional class-level annotation of @EnableRuleMigrationSupport
.
Check out the latest blogs from LambdaTest on this topic:
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There are various CI/CD tools such as CircleCI, TeamCity, Bamboo, Jenkins, GitLab, Travis CI, GoCD, etc., that help companies streamline their development process and ensure high-quality applications. If we talk about the top CI/CD tools in the market, Jenkins is still one of the most popular, stable, and widely used open-source CI/CD tools for building and automating continuous integration, delivery, and deployment pipelines smoothly and effortlessly.
This article is a part of our Content Hub. For more in-depth resources, check out our content hub on Selenium pytest Tutorial.
The Selenium automation framework supports many programming languages such as Python, PHP, Perl, Java, C#, and Ruby. But if you are looking for a server-side programming language for automation testing, Selenium WebDriver with PHP is the ideal combination.
While working on a project for test automation, you’d require all the Selenium dependencies associated with it. Usually these dependencies are downloaded and upgraded manually throughout the project lifecycle, but as the project gets bigger, managing dependencies can be quite challenging. This is why you need build automation tools such as Maven to handle them automatically.
LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.
Here are the detailed JUnit testing chapters to help you get started:
You can also check out our JUnit certification if you wish to take your career in Selenium automation testing with JUnit to the next level.
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