JUnit\u306f\u3001Java\u8a00\u8a9e\u306e\u305f\u3081\u306e\u6700\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3059\u3002\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3067\u63d0\u4f9b\u3055\u308c\u3001Kent Beck\u3068Erich Gamma\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u3002\u30b7\u30f3\u30d7\u30eb\u306a\u304c\u3089\u5f37\u529b\u306a\u6a5f\u80fd\u3092\u5099\u3048\u3001Java\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u54c1\u8cea\u3092\u4fdd\u8a3c\u3059\u308b\u4e0a\u3067\u4e0d\u53ef\u6b20\u306a\u30c4\u30fc\u30eb\u3068\u3057\u3066\u8a8d\u8b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u76ee\u6b21 <\/p>\n
\u8ab2\u984c<\/strong>\uff1a\u6a5f\u80fd\u8ffd\u52a0\u3084\u30d0\u30b0\u4fee\u6b63\u306e\u5ea6\u306b\u624b\u52d5\u3067\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u6642\u9593\u3068\u30ea\u30bd\u30fc\u30b9\u304c\u6d6a\u8cbb\u3055\u308c\u308b<\/p>\n\n\n\n \u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n \u8ab2\u984c\uff1a\u65b0\u6a5f\u80fd\u306e\u8ffd\u52a0\u3084\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u4fee\u6b63\u306b\u3088\u308a\u3001\u65e2\u5b58\u306e\u6a5f\u80fd\u304c\u610f\u56f3\u305b\u305a\u7834\u58ca\u3055\u308c\u308b<\/p>\n\n\n\n \u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n \u8ab2\u984c<\/strong>\uff1a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u6210\u9577\u3068\u3068\u3082\u306b\u3001\u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u7dad\u6301\u304c\u56f0\u96e3\u306b\u306a\u308b<\/p>\n\n\n\n \u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n \u3053\u306e\u3088\u3046\u306b\u3001JUnit\u306f\u5358\u306a\u308b\u30c6\u30b9\u30c8\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u8d85\u3048\u3066\u3001\u30e2\u30c0\u30f3\u306aJava\u958b\u767a\u306b\u304a\u3051\u308b\u54c1\u8cea\u4fdd\u8a3c\u306e\u4e2d\u6838\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3066\u3044\u307e\u3059\u3002\u521d\u5fc3\u8005\u306b\u3068\u3063\u3066\u306f\u5b66\u7fd2\u66f2\u7dda\u304c\u7de9\u3084\u304b\u3067\u3042\u308a\u306a\u304c\u3089\u3001\u4e0a\u7d1a\u8005\u306b\u306f\u5341\u5206\u306a\u6a5f\u80fd\u3068\u62e1\u5f35\u6027\u3092\u63d0\u4f9b\u3059\u308b\u3001\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u30c4\u30fc\u30eb\u3068\u3057\u3066\u8a55\u4fa1\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n \u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n \u89e3\u6c7a\u7b56<\/strong>\uff1a<\/p>\n\n\n\n \u3053\u308c\u3067JUnit\u306e\u74b0\u5883\u69cb\u7bc9\u306f\u5b8c\u4e86\u3067\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u5b9f\u969b\u306e\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u306b\u3064\u3044\u3066\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n \u57fa\u672c\u7684\u306a\u30c6\u30b9\u30c8\u30af\u30e9\u30b9\u306e\u69cb\u9020\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306f\u9280\u884c\u53e3\u5ea7\u30af\u30e9\u30b9\u306e\u30c6\u30b9\u30c8\u4f8b\u3067\u3059\uff1a<\/p>\n\n\n\n JUnit 5\u3067\u306f\u3001\u69d8\u3005\u306a\u691c\u8a3c\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n JUnit\u306e\u30c6\u30b9\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306f\u3001\u4ee5\u4e0b\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067\u5236\u5fa1\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n \u3053\u308c\u3089\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001\u5805\u7262\u306a\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u52b9\u7387\u7684\u306b\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n BDD\uff08Behavior Driven Development\uff09\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30c6\u30b9\u30c8\u306e\u610f\u56f3\u304c\u3088\u308a\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n \u5916\u90e8\u4f9d\u5b58\u3092\u6301\u3064\u30af\u30e9\u30b9\u306e\u30c6\u30b9\u30c8\u306b\u306f\u3001Mockito\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n \u540c\u3058\u30ed\u30b8\u30c3\u30af\u3092\u7570\u306a\u308b\u5165\u529b\u5024\u3067\u30c6\u30b9\u30c8\u3059\u308b\u5834\u5408\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u30c6\u30b9\u30c8\u304c\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n \u3053\u306e\u3088\u3046\u306b\u3001\u5b9f\u8df5\u7684\u306a\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u969b\u306f\uff1a<\/p>\n\n\n\n \u3059\u308b\u3053\u3068\u3067\u3001\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u4fe1\u983c\u3067\u304d\u308b\u30c6\u30b9\u30c8\u30b9\u30a4\u30fc\u30c8\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n Maven\u7528\u306e\u8a2d\u5b9a\uff08pom.xml\uff09:<\/p>\n\n\n\n \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08junit-platform.properties\uff09:<\/p>\n\n\n\n \u3053\u308c\u3089\u306e\u4e0a\u7d1a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\uff1a<\/p>\n\n\n\n \u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u958b\u767a\u30c1\u30fc\u30e0\u306e\u751f\u7523\u6027\u5411\u4e0a\u306b\u8ca2\u732e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n\n
2. \u56de\u5e30\u30d0\u30b0\u306e\u767a\u751f<\/h3>\n\n\n\n
\n
3. \u30b3\u30fc\u30c9\u306e\u54c1\u8cea\u7ba1\u7406<\/h3>\n\n\n\n
\n
\u306a\u305cJava\u958b\u767a\u8005\u306e90%\u304cJUnit\u3092\u9078\u3076\u306e\u304b<\/h2>\n\n\n\n
1. \u30b7\u30f3\u30d7\u30eb\u306a\u69cb\u6587\u3068\u8c4a\u5bcc\u306a\u6a5f\u80fd<\/h3>\n\n\n\n
\/\/ \u57fa\u672c\u7684\u306a\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306e\u4f8b\n@Test\npublic void testAddition() {\n Calculator calc = new Calculator();\n \/\/ \u671f\u5f85\u5024\u3068\u5b9f\u969b\u306e\u7d50\u679c\u3092\u6bd4\u8f03\n assertEquals(4, calc.add(2, 2));\n \/\/ \u8907\u6570\u306e\u691c\u8a3c\u3082\u7c21\u5358\u306b\u8a18\u8ff0\u53ef\u80fd\n assertTrue(calc.add(2, 2) > 0);\n}<\/pre>\n\n\n\n2. \u5e83\u7bc4\u306a\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0<\/h3>\n\n\n\n
\n
3. \u62e1\u5f35\u6027\u3068\u67d4\u8edf\u6027<\/h3>\n\n\n\n
\n
4. \u6d3b\u767a\u306a\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3068\u30b5\u30dd\u30fc\u30c8<\/h3>\n\n\n\n
\n
\u4e3b\u8981\u306a\u6a5f\u80fd\u6bd4\u8f03\u8868<\/h3>\n\n\n
\u6a5f\u80fd<\/th> JUnit 4<\/th> JUnit 5<\/th> TestNG<\/th><\/tr><\/thead> \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u57fa\u672c\u69cb\u6587<\/td> @Test<\/td> @Test<\/td> @Test<\/td><\/tr> \u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u30c6\u30b9\u30c8<\/td> @Parameters<\/td> @ParameterizedTest<\/td> @DataProvider<\/td><\/tr> \u30c6\u30b9\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb<\/td> @Before\/@After<\/td> @BeforeEach\/@AfterEach<\/td> @BeforeMethod\/@AfterMethod<\/td><\/tr> \u30b0\u30eb\u30fc\u30d7\u5316<\/td> @Category<\/td> @Tag<\/td> @Test(groups={})<\/td><\/tr> \u4e26\u5217\u5b9f\u884c<\/td> \u5236\u9650\u4ed8\u304d<\/td> \u5b8c\u5168\u30b5\u30dd\u30fc\u30c8<\/td> \u5b8c\u5168\u30b5\u30dd\u30fc\u30c8<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n JUnit\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u59cb\u3081\u3088\u3046<\/h1>\n\n\n\n
Maven\/Gradle\u3067\u306e\u5c0e\u5165\u624b\u9806<\/h2>\n\n\n\n
Maven\u3067\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n
pom.xml<\/code>\u306b\u4ee5\u4e0b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<!-- JUnit 5\u306e\u5834\u5408 -->\n<dependencies>\n <dependency>\n <groupId>org.junit.jupiter<\/groupId>\n <artifactId>junit-jupiter<\/artifactId>\n <version>5.10.1<\/version>\n <scope>test<\/scope>\n <\/dependency>\n\n <!-- Vintage Engine\uff08JUnit 4\u306e\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\uff09 -->\n <dependency>\n <groupId>org.junit.vintage<\/groupId>\n <artifactId>junit-vintage-engine<\/artifactId>\n <version>5.10.1<\/version>\n <scope>test<\/scope>\n <\/dependency>\n<\/dependencies>\n\n<build>\n <plugins>\n <plugin>\n <artifactId>maven-surefire-plugin<\/artifactId>\n <version>3.2.3<\/version>\n <\/plugin>\n <\/plugins>\n<\/build><\/pre>\n\n\n\n
Gradle\u3067\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n
build.gradle<\/code>\u306b\u4ee5\u4e0b\u306e\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u307e\u3059\uff1a<\/p>\n\n\n\ndependencies {\n testImplementation 'org.junit.jupiter:junit-jupiter:5.10.1'\n testRuntimeOnly 'org.junit.vintage:junit-vintage-engine:5.10.1'\n}\n\ntest {\n useJUnitPlatform()\n}<\/pre>\n\n\n\nIDE\u3067\u306e\u8a2d\u5b9a\u65b9\u6cd5<\/h2>\n\n\n\n
IntelliJ IDEA\u306e\u5834\u5408<\/h3>\n\n\n\n
\n
\n
org.junit.jupiter:junit-jupiter:5.10.1<\/code> \u3092\u691c\u7d22\u3057\u3066\u8ffd\u52a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n\n
Eclipse\u306e\u5834\u5408<\/h3>\n\n\n\n
\n
\n
\n
\u30d0\u30fc\u30b8\u30e7\u30f3\u9078\u629e\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/h3>\n\n\n
JUnit\u30d0\u30fc\u30b8\u30e7\u30f3<\/th> Java\u8981\u4ef6<\/th> \u4e3b\u306a\u7279\u5fb4<\/th> \u63a8\u5968\u7528\u9014<\/th><\/tr><\/thead> JUnit 5.10.x<\/td> Java 8\u4ee5\u4e0a<\/td> \u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3001\u62e1\u5f35\u6027\u5f37\u5316<\/td> \u65b0\u898f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/td><\/tr> JUnit 5.9.x<\/td> Java 8\u4ee5\u4e0a<\/td> \u5b89\u5b9a\u7248<\/td> \u5b9f\u52d9\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/td><\/tr> JUnit 4.13.x<\/td> Java 7\u4ee5\u4e0a<\/td> \u30ec\u30ac\u30b7\u30fc\u30b5\u30dd\u30fc\u30c8<\/td> \u65e2\u5b58\u30d7\u30ed\u30b8\u30a7\u30af\u30c8<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n \u5c0e\u5165\u6642\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h3>\n\n\n\n
\n
# \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b\nFailed to load ApplicationContext\njava.lang.NoSuchMethodError: org.junit.platform.commons.util.ClassLoaderUtils.getDefaultClassLoader()<\/pre>\n\n\n\n
\n
maven dependency:tree<\/code> \u3067\u4f9d\u5b58\u95a2\u4fc2\u3092\u78ba\u8a8d<\/li>\n\n\n\n\n
# \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u4f8b\nNo tests found for given includes<\/pre>\n\n\n\n
\n
*Test.java<\/code>\u3067\u7d42\u308f\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d<\/li>\n\n\n\n@Test<\/code>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u4ed8\u3044\u3066\u3044\u308b\u304b\u78ba\u8a8d<\/li>\n\n\n\n15\u5206\u3067\u66f8\u3051\u308b\uff01\u57fa\u672c\u7684\u306a\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9<\/h1>\n\n\n\n
\u30c6\u30b9\u30c8\u30af\u30e9\u30b9\u306e\u4f5c\u6210\u65b9\u6cd5<\/h2>\n\n\n\n
\/\/ \u30c6\u30b9\u30c8\u5bfe\u8c61\u306e\u30af\u30e9\u30b9\npublic class BankAccount {\n private double balance;\n\n public void deposit(double amount) {\n if (amount <= 0) throw new IllegalArgumentException(\"\u91d1\u984d\u306f\u6b63\u306e\u6570\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\");\n balance += amount;\n }\n\n public double getBalance() {\n return balance;\n }\n}\n\n\/\/ \u30c6\u30b9\u30c8\u30af\u30e9\u30b9\nimport org.junit.jupiter.api.*;\nimport static org.junit.jupiter.api.Assertions.*;\n\n@DisplayName(\"\u9280\u884c\u53e3\u5ea7\u30c6\u30b9\u30c8\") \/\/ \u30c6\u30b9\u30c8\u30af\u30e9\u30b9\u306e\u8868\u793a\u540d\u3092\u8a2d\u5b9a\npublic class BankAccountTest {\n private BankAccount account; \/\/ \u30c6\u30b9\u30c8\u5bfe\u8c61\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n\n @BeforeEach \/\/ \u5404\u30c6\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u524d\u306b\u5b9f\u884c\n void setUp() {\n account = new BankAccount();\n }\n\n @Test \/\/ \u30c6\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\n @DisplayName(\"\u5165\u91d1\u304c\u6b63\u5e38\u306b\u51e6\u7406\u3055\u308c\u308b\u3053\u3068\") \/\/ \u30c6\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u8868\u793a\u540d\n void depositShouldIncreaseBalance() {\n account.deposit(1000);\n assertEquals(1000, account.getBalance());\n }\n\n @Test\n @DisplayName(\"\u4e0d\u6b63\u306a\u5165\u91d1\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\")\n void depositNegativeAmountShouldThrowException() {\n assertThrows(IllegalArgumentException.class,\n () -> account.deposit(-1000));\n }\n}<\/pre>\n\n\n\nassert\u7cfb\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u3044\u5206\u3051<\/h2>\n\n\n\n
\u57fa\u672c\u7684\u306a\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3<\/h3>\n\n\n
\u30e1\u30bd\u30c3\u30c9<\/th> \u7528\u9014<\/th> \u4f7f\u7528\u4f8b<\/th><\/tr><\/thead> assertEquals<\/td> \u671f\u5f85\u5024\u3068\u5b9f\u969b\u306e\u5024\u304c\u7b49\u3057\u3044\u304b\u691c\u8a3c<\/td> assertEquals(expected, actual)<\/code><\/td><\/tr>assertTrue<\/td> \u6761\u4ef6\u304c\u771f\u3067\u3042\u308b\u3053\u3068\u3092\u691c\u8a3c<\/td> assertTrue(condition)<\/code><\/td><\/tr>assertFalse<\/td> \u6761\u4ef6\u304c\u507d\u3067\u3042\u308b\u3053\u3068\u3092\u691c\u8a3c<\/td> assertFalse(condition)<\/code><\/td><\/tr>assertNull<\/td> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u3067\u3042\u308b\u3053\u3068\u3092\u691c\u8a3c<\/td> assertNull(object)<\/code><\/td><\/tr>assertNotNull<\/td> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\u3067\u306a\u3044\u3053\u3068\u3092\u691c\u8a3c<\/td> assertNotNull(object)<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\u9ad8\u5ea6\u306a\u30a2\u30b5\u30fc\u30b7\u30e7\u30f3<\/h3>\n\n\n\n
\/\/ \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u691c\u8a3c\n@Test\nvoid collectionTest() {\n List<String> list = Arrays.asList(\"Apple\", \"Banana\", \"Orange\");\n assertAll(\"\u30d5\u30eb\u30fc\u30c4\u30ea\u30b9\u30c8\u306e\u691c\u8a3c\",\n () -> assertTrue(list.contains(\"Apple\")),\n () -> assertEquals(3, list.size()),\n () -> assertFalse(list.isEmpty())\n );\n}\n\n\/\/ \u4f8b\u5916\u306e\u691c\u8a3c\n@Test\nvoid exceptionTest() {\n Exception exception = assertThrows(\n IllegalArgumentException.class,\n () -> Integer.parseInt(\"ABC\")\n );\n assertTrue(exception.getMessage().contains(\"ABC\"));\n}\n\n\/\/ \u914d\u5217\u306e\u691c\u8a3c\n@Test\nvoid arrayTest() {\n int[] expected = {1, 2, 3};\n int[] actual = {1, 2, 3};\n assertArrayEquals(expected, actual);\n}<\/pre>\n\n\n\n\u30c6\u30b9\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u7406\u89e3<\/h2>\n\n\n\n
public class LifecycleTest {\n @BeforeAll\n static void initAll() {\n \/\/ \u30af\u30e9\u30b9\u5185\u306e\u5168\u30c6\u30b9\u30c8\u5b9f\u884c\u524d\u306b1\u56de\u3060\u3051\u5b9f\u884c\n \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306e\u78ba\u7acb\u306a\u3069\n }\n\n @BeforeEach\n void init() {\n \/\/ \u5404\u30c6\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u524d\u306b\u5b9f\u884c\n \/\/ \u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u6e96\u5099\u306a\u3069\n }\n\n @Test\n void someTest() {\n \/\/ \u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\n }\n\n @AfterEach\n void tearDown() {\n \/\/ \u5404\u30c6\u30b9\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c\u5f8c\u306b\u5b9f\u884c\n \/\/ \u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u306a\u3069\n }\n\n @AfterAll\n static void tearDownAll() {\n \/\/ \u30af\u30e9\u30b9\u5185\u306e\u5168\u30c6\u30b9\u30c8\u5b9f\u884c\u5f8c\u306b1\u56de\u3060\u3051\u5b9f\u884c\n \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u306e\u5207\u65ad\u306a\u3069\n }\n}<\/pre>\n\n\n\n\u30c6\u30b9\u30c8\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u5b9f\u884c\u9806\u5e8f<\/h3>\n\n\n\n
\n
@BeforeAll<\/code> \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/li>\n\n\n\n\n
@BeforeEach<\/code> \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/li>\n\n\n\n@Test<\/code> \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/li>\n\n\n\n@AfterEach<\/code> \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/li>\n<\/ul>\n<\/li>\n\n\n\n@AfterAll<\/code> \u30e1\u30bd\u30c3\u30c9\u306e\u5b9f\u884c<\/li>\n<\/ol>\n\n\n\n\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n
\n
@BeforeEach<\/code> \u3067\u306f\uff1a\n\n
@AfterEach<\/code> \u3067\u306f\uff1a\n\n
@BeforeAll<\/code>\/@AfterAll<\/code> \u3067\u306f\uff1a\n\n
\u5b9f\u8df5\u7684\u306aJUnit\u30c6\u30b9\u30c8\u306e\u66f8\u304d\u65b9<\/h1>\n\n\n\n
\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u8a2d\u8a08\u306eBDD\u30a2\u30d7\u30ed\u30fc\u30c1<\/h2>\n\n\n\n
import org.junit.jupiter.api.*;\nimport static org.junit.jupiter.api.Assertions.*;\n\n@DisplayName(\"\u30b7\u30e7\u30c3\u30d4\u30f3\u30b0\u30ab\u30fc\u30c8\u306e\u30c6\u30b9\u30c8\")\npublic class ShoppingCartTest {\n\n private ShoppingCart cart;\n\n @Nested\n @DisplayName(\"\u5546\u54c1\u8ffd\u52a0\u6642\u306e\u632f\u308b\u821e\u3044\")\n class AddItemTests {\n @BeforeEach\n void setUp() {\n cart = new ShoppingCart();\n }\n\n @Test\n @DisplayName(\"\u6b63\u5e38\u7cfb: \u5546\u54c1\u3092\u8ffd\u52a0\u3059\u308b\u3068\u5408\u8a08\u91d1\u984d\u304c\u66f4\u65b0\u3055\u308c\u308b\")\n void given_ValidItem_When_AddToCart_Then_TotalIsUpdated() {\n \/\/ Given - \u524d\u63d0\u6761\u4ef6\n Item book = new Item(\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u672c\", 2000);\n\n \/\/ When - \u5b9f\u884c\n cart.addItem(book);\n\n \/\/ Then - \u691c\u8a3c\n assertEquals(2000, cart.getTotal());\n assertEquals(1, cart.getItemCount());\n }\n\n @Test\n @DisplayName(\"\u7570\u5e38\u7cfb: null\u5546\u54c1\u3092\u8ffd\u52a0\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\")\n void given_NullItem_When_AddToCart_Then_ThrowsException() {\n \/\/ Given - \u524d\u63d0\u6761\u4ef6\n Item nullItem = null;\n\n \/\/ When & Then - \u5b9f\u884c\u3068\u691c\u8a3c\n assertThrows(IllegalArgumentException.class,\n () -> cart.addItem(nullItem));\n }\n }\n}<\/pre>\n\n\n\n\u30e2\u30c3\u30af\u3068\u30b9\u30bf\u30d6\u306e\u52b9\u679c\u7684\u306a\u4f7f\u7528\u65b9\u6cd5<\/h2>\n\n\n\n
import org.mockito.Mock;\nimport org.mockito.InjectMocks;\nimport static org.mockito.Mockito.*;\n\n@ExtendWith(MockitoExtension.class)\npublic class OrderServiceTest {\n\n @Mock\n private PaymentGateway paymentGateway;\n\n @Mock\n private InventoryService inventoryService;\n\n @InjectMocks\n private OrderService orderService;\n\n @Test\n @DisplayName(\"\u6ce8\u6587\u51e6\u7406\u306e\u6b63\u5e38\u7cfb\u30c6\u30b9\u30c8\")\n void testProcessOrder() {\n \/\/ \u30b9\u30bf\u30d6\u306e\u8a2d\u5b9a\n when(inventoryService.checkStock(\"ITEM001\"))\n .thenReturn(true);\n when(paymentGateway.processPayment(anyDouble()))\n .thenReturn(true);\n\n \/\/ \u30c6\u30b9\u30c8\u5b9f\u884c\n Order order = new Order(\"ITEM001\", 2, 1000.0);\n OrderResult result = orderService.processOrder(order);\n\n \/\/ \u691c\u8a3c\n assertTrue(result.isSuccess());\n verify(inventoryService).reduceStock(\"ITEM001\", 2);\n verify(paymentGateway).processPayment(2000.0);\n }\n\n @Test\n @DisplayName(\"\u5728\u5eab\u4e0d\u8db3\u6642\u306e\u6ce8\u6587\u51e6\u7406\u30c6\u30b9\u30c8\")\n void testProcessOrderWithInsufficientStock() {\n \/\/ \u30b9\u30bf\u30d6\u306e\u8a2d\u5b9a\n when(inventoryService.checkStock(\"ITEM001\"))\n .thenReturn(false);\n\n \/\/ \u30c6\u30b9\u30c8\u5b9f\u884c\n Order order = new Order(\"ITEM001\", 2, 1000.0);\n OrderResult result = orderService.processOrder(order);\n\n \/\/ \u691c\u8a3c\n assertFalse(result.isSuccess());\n assertEquals(\"\u5728\u5eab\u4e0d\u8db3\", result.getErrorMessage());\n verify(paymentGateway, never()).processPayment(anyDouble());\n }\n}<\/pre>\n\n\n\n\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u30c6\u30b9\u30c8\u3067\u52b9\u7387\u5316<\/h2>\n\n\n\n
@DisplayName(\"\u7a0e\u984d\u8a08\u7b97\u306e\u30c6\u30b9\u30c8\")\nclass TaxCalculatorTest {\n\n @ParameterizedTest\n @CsvSource({\n \"1000, 0.10, 100\",\n \"2000, 0.10, 200\",\n \"5000, 0.08, 400\",\n \"8000, 0.08, 640\"\n })\n @DisplayName(\"\u57fa\u672c\u7684\u306a\u7a0e\u984d\u8a08\u7b97\")\n void testCalculateTax(double amount, double rate, double expected) {\n TaxCalculator calculator = new TaxCalculator();\n assertEquals(expected, calculator.calculate(amount, rate));\n }\n\n @ParameterizedTest\n @MethodSource(\"provideTestCases\")\n @DisplayName(\"\u8907\u96d1\u306a\u7a0e\u984d\u8a08\u7b97\")\n void testComplexTaxCalculation(TaxTestCase testCase) {\n TaxCalculator calculator = new TaxCalculator();\n assertEquals(\n testCase.expected,\n calculator.calculateWithRules(testCase.amount, testCase.rules)\n );\n }\n\n static Stream<TaxTestCase> provideTestCases() {\n return Stream.of(\n new TaxTestCase(1000, \n Arrays.asList(new TaxRule(\"BASE\", 0.1)), 100),\n new TaxTestCase(2000,\n Arrays.asList(\n new TaxRule(\"BASE\", 0.1),\n new TaxRule(\"CITY\", 0.02)\n ), 240)\n );\n }\n}<\/pre>\n\n\n\n\u30d1\u30e9\u30e1\u30fc\u30bf\u5316\u30c6\u30b9\u30c8\u306e\u9ad8\u5ea6\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n
class AdvancedParameterizedTests {\n\n @ParameterizedTest\n @ValueSource(strings = {\"\", \" \", \" \"})\n void testIsBlank(String input) {\n assertTrue(StringUtils.isBlank(input));\n }\n\n @ParameterizedTest\n @EnumSource(value = DayOfWeek.class, \n names = {\"SATURDAY\", \"SUNDAY\"})\n void testIsWeekend(DayOfWeek day) {\n assertTrue(DateUtils.isWeekend(day));\n }\n\n @ParameterizedTest\n @CsvFileSource(resources = \"\/test-data.csv\", \n numLinesToSkip = 1)\n void testWithCsvFile(String input, int expected) {\n assertEquals(expected, \n BusinessLogic.process(input));\n }\n}<\/pre>\n\n\n\n\n
\u73fe\u5834\u3067\u4f7f\u3048\u308b\u4e0a\u7d1a\u30c6\u30af\u30cb\u30c3\u30af<\/h1>\n\n\n\n
\u30c6\u30b9\u30c8\u30ab\u30d0\u30ec\u30c3\u30b8100%\u3078\u306e\u9053\u7b4b<\/h2>\n\n\n\n
\u30ab\u30d0\u30ec\u30c3\u30b8\u30ec\u30dd\u30fc\u30c8\u306e\u8a2d\u5b9a<\/h3>\n\n\n\n
<plugin>\n <groupId>org.jacoco<\/groupId>\n <artifactId>jacoco-maven-plugin<\/artifactId>\n <version>0.8.11<\/version>\n <executions>\n <execution>\n <goals>\n <goal>prepare-agent<\/goal>\n <\/goals>\n <\/execution>\n <execution>\n <id>report<\/id>\n <phase>test<\/phase>\n <goals>\n <goal>report<\/goal>\n <\/goals>\n <\/execution>\n <execution>\n <id>check<\/id>\n <goals>\n <goal>check<\/goal>\n <\/goals>\n <configuration>\n <rules>\n <rule>\n <element>CLASS<\/element>\n <limits>\n <limit>\n <counter>LINE<\/counter>\n <value>COVEREDRATIO<\/value>\n <minimum>0.90<\/minimum>\n <\/limit>\n <\/limits>\n <\/rule>\n <\/rules>\n <\/configuration>\n <\/execution>\n <\/executions>\n<\/plugin><\/pre>\n\n\n\n
\u52b9\u679c\u7684\u306a\u30ab\u30d0\u30ec\u30c3\u30b8\u5411\u4e0a\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n
@Test\nvoid testComplexLogicWithAllBranches() {\n ComplexService service = new ComplexService();\n\n \/\/ 1. \u5883\u754c\u5024\u306e\u30c6\u30b9\u30c8\n assertThrows(IllegalArgumentException.class, \n () -> service.process(-1));\n assertEquals(0, service.process(0));\n assertEquals(100, service.process(100));\n assertThrows(IllegalArgumentException.class, \n () -> service.process(101));\n\n \/\/ 2. \u6761\u4ef6\u5206\u5c90\u306e\u30ab\u30d0\u30ec\u30c3\u30b8\n assertTrue(service.validate(\n new Request(true, false, \"TEST\")));\n assertFalse(service.validate(\n new Request(false, true, \"TEST\")));\n\n \/\/ 3. \u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30e1\u30bd\u30c3\u30c9\u306e\u30c6\u30b9\u30c8\n \/\/ \u30c6\u30b9\u30c8\u3057\u3084\u3059\u3044\u8a2d\u8a08\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\n class TestableService extends ComplexService {\n @Override\n protected boolean internalValidation(String input) {\n return super.internalValidation(input);\n }\n }\n TestableService testable = new TestableService();\n assertTrue(testable.internalValidation(\"valid\"));\n}<\/pre>\n\n\n\n\u30c6\u30b9\u30c8\u5b9f\u884c\u6642\u9593\u309250%\u524a\u6e1b\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n
1. \u30c6\u30b9\u30c8\u306e\u4e26\u5217\u5b9f\u884c<\/h3>\n\n\n\n
@Test\n@Execution(ExecutionMode.CONCURRENT)\nclass ParallelTest {\n @RepeatedTest(100)\n void longRunningTest() {\n \/\/ \u91cd\u3044\u51e6\u7406\n }\n}<\/pre>\n\n\n\njunit.jupiter.execution.parallel.enabled=true\njunit.jupiter.execution.parallel.mode.default=concurrent\njunit.jupiter.execution.parallel.mode.classes.default=concurrent\njunit.jupiter.execution.parallel.config.strategy=dynamic\njunit.jupiter.execution.parallel.config.dynamic.factor=1<\/pre>\n\n\n\n
2. \u30c6\u30b9\u30c8\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n
class OptimizedTests {\n \/\/ 1. \u5171\u6709\u30ea\u30bd\u30fc\u30b9\u306e\u518d\u5229\u7528\n private static ExpensiveResource resource;\n\n @BeforeAll\n static void initResource() {\n resource = new ExpensiveResource();\n }\n\n \/\/ 2. \u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u52b9\u7387\u7684\u306a\u6e96\u5099\n @TestFactory\n Stream<DynamicTest> generateTests() {\n return Stream.of(\"A\", \"B\", \"C\")\n .map(input -> DynamicTest.dynamicTest(\n \"Test \" + input,\n () -> assertTrue(resource.process(input))\n ));\n }\n\n \/\/ 3. \u4e0d\u8981\u306a\u521d\u671f\u5316\u306e\u56de\u907f\n @Test\n @DisabledIfEnvironmentVariable(\n named = \"TEST_ENV\",\n matches = \"PROD\"\n )\n void skipInProd() {\n \/\/ \u30d7\u30ed\u30c0\u30af\u30b7\u30e7\u30f3\u74b0\u5883\u3067\u30b9\u30ad\u30c3\u30d7\n }\n}<\/pre>\n\n\n\nCI\/CD\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u3068\u306e\u9023\u643a<\/h2>\n\n\n\n
GitLab CI\/CD\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n
test:\n stage: test\n script:\n - mvn clean test\n artifacts:\n reports:\n junit:\n - target\/surefire-reports\/TEST-*.xml\n paths:\n - target\/site\/jacoco\/\n coverage: '\/Total.*?([0-9]{1,3})%\/'<\/pre>\n\n\n\nGitHub Actions\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n
name: Java CI with Maven\non: [push, pull_request]\njobs:\n test:\n runs-on: ubuntu-latest\n steps:\n - uses: actions\/checkout@v3\n - name: Set up JDK\n uses: actions\/setup-java@v3\n with:\n java-version: '17'\n distribution: 'temurin'\n - name: Test with Maven\n run: mvn clean test\n - name: Publish Test Report\n uses: mikepenz\/action-junit-report@v3\n if: always()\n with:\n report_paths: '**\/target\/surefire-reports\/TEST-*.xml'\n - name: Upload coverage\n uses: actions\/upload-artifact@v3\n with:\n name: coverage-report\n path: target\/site\/jacoco\/<\/pre>\n\n\n\n
Jenkins Pipeline\u8a2d\u5b9a\u4f8b<\/h3>\n\n\n\n
pipeline {\n agent any\n stages {\n stage('Test') {\n steps {\n sh 'mvn clean test'\n }\n post {\n always {\n junit '**\/target\/surefire-reports\/TEST-*.xml'\n jacoco(\n execPattern: 'target\/jacoco.exec',\n classPattern: 'target\/classes',\n sourcePattern: 'src\/main\/java',\n exclusionPattern: 'src\/test\/*'\n )\n }\n }\n }\n }\n}<\/pre>\n\n\n\n\n
\u3088\u304f\u3042\u308b\u30c8\u30e9\u30d6\u30eb\u3068\u89e3\u6c7a\u65b9\u6cd5<\/h1>\n\n\n\n
\u30c6\u30b9\u30c8\u5931\u6557\u6642\u306e\u30c7\u30d0\u30c3\u30b0\u624b\u9806<\/h2>\n\n\n\n
1. \u30c6\u30b9\u30c8\u5931\u6557\u306e\u30d1\u30bf\u30fc\u30f3\u5206\u6790<\/h3>\n\n\n
\u5931\u6557\u30d1\u30bf\u30fc\u30f3<\/th> \u3088\u304f\u3042\u308b\u539f\u56e0<\/th> \u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8<\/th><\/tr><\/thead> AssertionError<\/td> \u671f\u5f85\u5024\u3068\u5b9f\u969b\u306e\u5024\u306e\u4e0d\u4e00\u81f4<\/td> \u2013 \u671f\u5f85\u5024\u306e\u59a5\u5f53\u6027
\u2013 \u5b9f\u969b\u306e\u5024\u306e\u8a08\u7b97\u30ed\u30b8\u30c3\u30af<\/td><\/tr>NullPointerException<\/td> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u521d\u671f\u5316\u306e\u554f\u984c<\/td> \u2013 @BeforeEach\u306e\u5b9f\u88c5
\u2013 \u30e2\u30c3\u30af\u306e\u8a2d\u5b9a<\/td><\/tr>TimeoutException<\/td> \u51e6\u7406\u6642\u9593\u8d85\u904e<\/td> \u2013 \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u8a2d\u5b9a
\u2013 \u975e\u540c\u671f\u51e6\u7406\u306e\u5f85\u6a5f<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n2. \u52b9\u679c\u7684\u306a\u30c7\u30d0\u30c3\u30b0\u624b\u6cd5<\/h3>\n\n\n\n
@Test\nvoid demonstrateDebugging() {\n \/\/ 1. \u30ed\u30b0\u51fa\u529b\u3092\u6d3b\u7528\n Logger logger = LoggerFactory.getLogger(this.getClass());\n\n \/\/ 2. \u30c6\u30b9\u30c8\u5b9f\u884c\u6642\u306e\u8a73\u7d30\u60c5\u5831\u3092\u8868\u793a\n TestInfo testInfo = new TestInfo() {\n @Override\n public String getDisplayName() {\n return \"\u30c7\u30d0\u30c3\u30b0\u30c6\u30b9\u30c8\";\n }\n };\n\n \/\/ 3. \u30a2\u30b5\u30fc\u30b7\u30e7\u30f3\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u5177\u4f53\u7684\u306b\n User user = new User(\"test@example.com\");\n assertNotNull(user.getEmail(), \n \"\u30e6\u30fc\u30b6\u30fc\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304cnull\u3067\u3059\u3002\u521d\u671f\u5316\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\");\n\n \/\/ 4. \u6bb5\u968e\u7684\u306a\u691c\u8a3c\n Order order = new Order(user);\n assertAll(\"\u6ce8\u6587\u51e6\u7406\u306e\u691c\u8a3c\",\n () -> assertNotNull(order, \"\u6ce8\u6587\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304cnull\"),\n () -> assertNotNull(order.getUser(), \"\u6ce8\u6587\u306e\u30e6\u30fc\u30b6\u30fc\u304cnull\"),\n () -> assertEquals(\"test@example.com\", \n order.getUser().getEmail(), \"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3057\u306a\u3044\")\n );\n}<\/pre>\n\n\n\n\u30c7\u30d0\u30c3\u30b0\u7528\u306e\u4fbf\u5229\u306a\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3<\/h3>\n\n\n\n
class DebugHelperTest {\n \/\/ \u30c6\u30b9\u30c8\u5931\u6557\u6642\u306b\u8a73\u7d30\u60c5\u5831\u3092\u8868\u793a\n @Test\n @DisplayName(\"\u969c\u5bb3\u767a\u751f\u6642\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u60c5\u5831\u8868\u793a\")\n void testWithCustomFailureMessage() {\n assumeTrue(\n DatabaseConnection.isAvailable(),\n \"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u304c\u5229\u7528\u3067\u304d\u307e\u305b\u3093\"\n );\n\n \/\/ \u30ab\u30b9\u30bf\u30e0\u30b3\u30f3\u30c7\u30a3\u30b7\u30e7\u30f3\n Assertions.assertTrue(\n isSystemReady(),\n () -> String.format(\n \"\u30b7\u30b9\u30c6\u30e0\u72b6\u614b: %s, \u30e1\u30e2\u30ea\u4f7f\u7528\u7387: %d%%\",\n getSystemStatus(),\n getMemoryUsage()\n )\n );\n }\n\n \/\/ \u7279\u5b9a\u306e\u74b0\u5883\u3067\u306e\u307f\u5b9f\u884c\n @Test\n @EnabledIfEnvironmentVariable(\n named = \"TEST_ENV\",\n matches = \"development\"\n )\n void testInDevelopmentOnly() {\n \/\/ \u958b\u767a\u74b0\u5883\u7279\u6709\u306e\u30c6\u30b9\u30c8\n }\n}<\/pre>\n\n\n\n\u74b0\u5883\u4f9d\u5b58\u306e\u554f\u984c\u3078\u306e\u5bfe\u51e6\u6cd5<\/h2>\n\n\n\n
1. \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u306e\u554f\u984c<\/h3>\n\n\n\n