{"id":27292,"date":"2015-09-23T15:00:36","date_gmt":"2015-09-23T12:00:36","guid":{"rendered":"http:\/\/examples.javacodegeeks.com\/?p=27292"},"modified":"2019-03-21T12:04:41","modified_gmt":"2019-03-21T10:04:41","slug":"junit-categories-example","status":"publish","type":"post","link":"https:\/\/examples.javacodegeeks.com\/java-development\/core-java\/junit\/junit-categories-example\/","title":{"rendered":"JUnit Categories Example"},"content":{"rendered":"

1. Introduction<\/h2>\n

JUnit has an awesome feature of organizing group of test cases called Categorizing. It can help developers differentiate test cases from one another. In this post, I’ll showcase how easy it is to categorize unit tests by @Category<\/code><\/a>.
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2. Maven Project and Configuration<\/h2>\n

pom.xml<\/em><\/span><\/p>\n

<project xmlns=\"http:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n\txsi:schemaLocation=\"http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\n\t<modelVersion>4.0.0<\/modelVersion>\n\t<groupId>com.jgc.areyes.junit<\/groupId>\n\t<artifactId>junit-categories-example<\/artifactId>\n\t<version>0.0.1-SNAPSHOT<\/version>\n\t<build>\n\t\t<plugins>\n\t\t\t<plugin>\n\t\t\t\t<groupId>org.apache.maven.plugins<\/groupId>\n\t\t\t\t<artifactId>maven-surefire-plugin<\/artifactId>\n\t\t\t\t<version>2.17<\/version>\n\t\t\t\t<dependencies>\n\t\t\t\t\t<dependency>\n\t\t\t\t\t\t<groupId>org.apache.maven.surefire<\/groupId>\n\t\t\t\t\t\t<artifactId>surefire-junit47<\/artifactId>\n\t\t\t\t\t\t<version>2.17<\/version>\n\t\t\t\t\t<\/dependency>\n\t\t\t\t<\/dependencies>\n\t\t\t<\/plugin>\n\t\t<\/plugins>\n\t<\/build>\n\t<dependencies>\n\t\t<dependency>\n\t\t\t<groupId>junit<\/groupId>\n\t\t\t<artifactId>junit<\/artifactId>\n\t\t\t<version>4.12<\/version>\n\t\t\t<scope>test<\/scope>\n\t\t<\/dependency>\n\t<\/dependencies>\n<\/project>\n<\/pre>\n
3. Source code sample<\/h2>\n
Define the interfaces first. In order for us to group test cases, we need to create a unifier\/union on them. We use interface<\/code> class to tag a specific class or method to a group. Here are the interfaces that we will use in this example.<\/p>\n
Interfaces<\/em><\/span><\/p>\n
public interface FunctionalGroupTests1 {}\npublic interface FunctionalGroupTests2 {}\npublic interface IntegrationTests {}\npublic interface SanityTests {}\n<\/pre>\n
We then use those interfaces on our test cases. This will differentiate the test case for our own test purposes. In the example below, we tag tests method by category using the @Category<\/code><\/a> annotation
 
<\/div> <\/div><\/p>\n
JUnitTestCategoryExample.java<\/em><\/span><\/p>\n
package com.areyes.junit.svc;\n\nimport static org.hamcrest.CoreMatchers.isA;\nimport static org.junit.Assert.*;\n\nimport org.junit.Assert;\nimport org.junit.Test;\nimport org.junit.experimental.categories.Category;\n\nimport com.areyes.junit.cat.intf.FunctionalGroupTests1;\nimport com.areyes.junit.cat.intf.FunctionalGroupTests2;\nimport com.areyes.junit.cat.intf.IntegrationTests;\nimport com.areyes.junit.cat.intf.SanityTests;\n\npublic class JUnitTestCategoryExample {\n\n\t@Test @Category(FunctionalGroupTests1.class)\n\tpublic void testFunctionalTests1Test1() {\n\t\t\/\/\tYou're test case here: Below is just an example.\n\t\tint numberInLoop = 0;\n\t\tfor (int i=0;i<1000;i++) {\n\t\t\tnumberInLoop++;\n\t\t\t\n\t\t}\n\t\tSystem.out.println(\"FunctionalGroupTests1: testFunctionalTests1Test1\");\n\t\tAssert.assertThat(numberInLoop,isA(Integer.class));\n\t}\n\t\n\t@Test @Category(FunctionalGroupTests1.class)\n\tpublic void testFunctionalTests1Test2() {\n\t\t\/\/\tYou're test case here: Below is just an example.\n\t\tint numberInLoop = 0;\n\t\tfor (int i=1000;i<4000;i++) {\n\t\t\tnumberInLoop++;\n\t\t\t\n\t\t}\n\t\tSystem.out.println(\"FunctionalGroupTests1: testFunctionalTests1Test2\");\n\t\tAssert.assertThat(numberInLoop,isA(Integer.class));\n\t}\n\t\n\t@Test @Category(FunctionalGroupTests2.class)\n\tpublic void testFunctionalTests2Test1() {\n\t\t\/\/\tYou're test case here: Below is just an example.\n\t\tint numberInLoop = 0;\n\t\tdo{\n\t\t\tnumberInLoop++;\n\t\t}while(numberInLoop != 1000);\n\t\tSystem.out.println(\"FunctionalGroupTests2: testFunctionalTests2Test1\");\n\t\tAssert.assertThat(numberInLoop,isA(Integer.class));\n\t}\n\t\n\t@Test @Category(FunctionalGroupTests2.class)\n\tpublic void testFunctionalTests2Test2() {\n\t\tSystem.out.println(\"FunctionalGroupTests2: testFunctionalTests2Test2\");\n\t}\n\n\t@Test @Category({IntegrationTests.class,FunctionalGroupTests1.class})\n\tpublic void testIntegrationTestsTest1() {\n\t\tSystem.out.println(\"IntegrationTests: testIntegrationTestsTest1\");\n\t}\n\t\n\t@Test @Category(SanityTests.class)\n\tpublic void testSanityTestsTest1() {\n\t\tSystem.out.println(\"SanityTests: testSanityTestsTest1\");\n\t}\t\n}\n<\/pre>\n
4. Running our example<\/h2>\n
4.1 Running Tests by Category<\/h3>\n
We can run specific test case category by running the commands in Maven below. mvn test -Dgroups=\"com.areyes.junit.cat.intf.FunctionalGroupTests1, com.areyes.junit.cat.intf.FunctionalGroupTests2\"<\/code>
\nmvn test -Dgroups=\"com.areyes.junit.cat.intf.IntegrationTests, com.areyes.junit.cat.intf.SanityTests\"<\/code>[ulp id=’ODQaBEw1BIbHApZq’]<\/p>\n
4.2 Running tests by Category Profile<\/h3>\n
Alternatively, we can run tests by profile. We need to update our pom.xml and add a new profiles. We will then use these profiles and tag the categories we created to each as shown below.<\/p>\n
pom.xml<\/em><\/span><\/p>\n
<project xmlns=\"http:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n\txsi:schemaLocation=\"http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\n\t<modelVersion>4.0.0<\/modelVersion>\n\t<groupId>com.jgc.areyes.junit<\/groupId>\n\t<artifactId>junit-categories-example<\/artifactId>\n\t<version>0.0.1-SNAPSHOT<\/version>\n\t<build>\n\t\t<plugins>\n\t\t\t<plugin>\n\t\t\t\t<groupId>org.apache.maven.plugins<\/groupId>\n\t\t\t\t<artifactId>maven-surefire-plugin<\/artifactId>\n\t\t\t\t<version>2.17<\/version>\n\t\t\t\t<dependencies>\n\t\t\t\t\t<dependency>\n\t\t\t\t\t\t<groupId>org.apache.maven.surefire<\/groupId>\n\t\t\t\t\t\t<artifactId>surefire-junit47<\/artifactId>\n\t\t\t\t\t\t<version>2.17<\/version>\n\t\t\t\t\t<\/dependency>\n\t\t\t\t<\/dependencies>\n\t\t\t\t<configuration>\n\t\t\t\t\t<groups>${testcase.groups}<\/groups>\n\t\t\t\t\t<excludes>\n\t\t\t\t\t\t<exclude>${exclude.tests}<\/exclude>\n\t\t\t\t\t<\/excludes>\n\t\t\t\t\t<includes>\n\t\t\t\t\t\t<include>${include.tests}<\/include>\n\t\t\t\t\t<\/includes>\n\t\t\t\t<\/configuration>\n\t\t\t<\/plugin>\n\t\t<\/plugins>\n\t<\/build>\n\t<profiles>\n\t    <profile>\n\t        <id>sanityTests<\/id>\n\t        <properties>\n\t            <testcase.groups>com.areyes.junit.svc.SanityTests<\/testcase.groups>\n\t        <\/properties>\n\t    <\/profile>\n\t    <profile>\n\t        <id>functionalGroupTests1<\/id>\n\t        <properties>\n\t            <testcase.groups>com.areyes.junit.svc.FunctionalGroupTests1<\/testcase.groups>\n\t        <\/properties>\n\t    <\/profile>\n\t    <profile>\n\t        <id>functionalGroupTests2<\/id>\n\t        <properties>\n\t            <testcase.groups>com.areyes.junit.svc.FunctionalGroupTests2<\/testcase.groups>\n\t        <\/properties>\n\t    <\/profile>\n\t    <profile>\n\t        <id>integrationTests<\/id>\n\t        <properties>\n\t            <testcase.groups>com.areyes.junit.svc.IntegrationTests<\/testcase.groups>\n\t        <\/properties>\n\t    <\/profile>\n\t<\/profiles>\n\t\n\t<dependencies>\n\t\t<dependency>\n\t\t\t<groupId>junit<\/groupId>\n\t\t\t<artifactId>junit<\/artifactId>\n\t\t\t<version>4.12<\/version>\n\t\t\t<scope>test<\/scope>\n\t\t<\/dependency>\n\t<\/dependencies>\n<\/project>\n<\/pre>\n
Run them by using the following maven command: mvn test -pfunctionalGroupTests1<\/code><\/p>\n
5. Download the Eclipse project<\/h2>\n
This was an example of JUnit Category.<\/p>\n
Download<\/strong>
\nYou can download the full source code of this example here: junit-categories-example<\/strong><\/a><\/div>\n","protected":false},"excerpt":{"rendered":"
1. Introduction JUnit has an awesome feature of organizing group of test cases called Categorizing. It can help developers differentiate test cases from one another. In this post, I’ll showcase how easy it is to categorize unit tests by @Category.             2. Maven Project and Configuration pom.xml <project xmlns=”http:\/\/maven.apache.org\/POM\/4.0.0″ xmlns:xsi=”http:\/\/www.w3.org\/2001\/XMLSchema-instance” …<\/p>\n","protected":false},"author":41,"featured_media":6678,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[1219,1220,1032],"class_list":["post-27292","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-junit","tag-category","tag-example","tag-junit"],"yoast_head":"\nJUnit Categories Example - Java Code Geeks<\/title>\n<meta name=\"description\" content=\"1. 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