{"id":83803,"date":"2020-09-28T07:15:05","date_gmt":"2020-09-28T07:15:05","guid":{"rendered":"https:\/\/www.baeldung.com\/?p=87771"},"modified":"2020-09-28T07:15:05","modified_gmt":"2020-09-28T07:15:05","slug":"beforeall-and-afterall-in-non-static-methods","status":"publish","type":"post","link":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/2020\/09\/28\/beforeall-and-afterall-in-non-static-methods\/","title":{"rendered":"@BeforeAll and @AfterAll in Non-Static Methods"},"content":{"rendered":"

<\/p>\n

1. Overview<\/h2>\n
<\/div>\n

In this short tutorial, we’re going to implement non-static methods with @BeforeAll<\/em> and @AfterAll<\/em> annotations available in Junit5<\/a><\/em>.<\/p>\n

2. @BeforeAll<\/em> and @AfterAll<\/em> in Non-Static Methods<\/h2>\n
<\/div>\n

While unit testing, we may occasionally want to use @BeforeAll<\/em> and @AfterAll<\/em> in non-static setup and tear-down methods \u2014 for instance, in a @Nested<\/em> test class or as interface default methods.<\/p>\n

Let’s create a test class with the @BeforeAll<\/em> and @AfterAll<\/em> methods as non-static:<\/p>\n

public class BeforeAndAfterAnnotationsUnitTest {\r\n    String input;\r\n    Long result;\r\n    @BeforeAll\r\n    public void setup() {\r\n        input = \"77\";\r\n    }\r\n    @AfterAll\r\n    public void teardown() {\r\n        input = null;\r\n        result = null;\r\n    }\r\n    @Test\r\n    public void whenConvertStringToLong_thenResultShouldBeLong() {\r\n        result = Long.valueOf(input);\r\n        Assertions.assertEquals(77l, result);\r\n    }\u200b_\r\n}<\/code><\/pre>\n
If we run the above code, it will throw an exception:<\/p>\n
org.junit.platform.commons.JUnitException:  ...<\/code><\/pre>\n
Let’s now see how we can avoid this situation.<\/p>\n
3. The @TestInstance<\/em> Annotation<\/h2>\n
<\/div>\n
We’ll use the @TestInstance<\/em><\/a> annotation to configure the lifecycle of a test. If we don’t declare it on our test class, the lifecycle mode will be PER_METHOD<\/em> by default.<\/em> So, to prevent our test class from throwing a JUnitException,<\/em> we need to annotate it with @TestInstance(TestInstance.<\/em><\/strong>Lifecycle.PER_CLASS)<\/strong>.<\/em><\/p>\n
Let’s redo our test class and add the @TestInstance(TestInstance.<\/em>Lifecycle.PER_CLASS):<\/em><\/p>\n
@TestInstance(TestInstance.Lifecycle.PER_CLASS)\r\npublic class BeforeAndAfterAnnotationsUnitTest {\r\n    String input;\r\n    Long result;\r\n    @BeforeAll\r\n    public void setup() {\r\n        input = \"77\";\r\n    }\r\n    @AfterAll\r\n    public void teardown() {\r\n        input = null;\r\n        result = null;\r\n    }\r\n    @Test\r\n    public void whenConvertStringToLong_thenResultShouldBeLong() {\r\n        result = Long.valueOf(input);\r\n        Assertions.assertEquals(77l, result);\r\n    }\r\n}\r\n<\/code><\/pre>\n
In this case, our test runs successfully.<\/p>\n
<\/code>4. Conclusion<\/h2>\n
<\/div>\n
In this short article, we’ve learned how to use @BeforeAll<\/em> and @AfterAll<\/em> in non-static methods. First, we started with a simple non-static example to show what happens if we don’t include the @TestInstance<\/em> annotation. Then, we annotated our test with @TestInstance(TestInstance.Lifecycle.PER_CLASS)<\/em>\u00a0to prevent throwing a JUnitException<\/i>.<\/p>\n
As always, the implementation of all these examples is over on GitHub<\/a>.<\/p>\n
The post @BeforeAll and @AfterAll in Non-Static Methods<\/a> first appeared on Baeldung<\/a>.<\/p>\n
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While unit testing, we may occasionally want to use @BeforeAll and @AfterAll in non-static setup and tear-down methods. Let’s see how we can do it.<\/p>\n
The post @BeforeAll and @AfterAll in Non-Static Methods<\/a> first appeared on Baeldung<\/a>.<\/p>\n
<\/a> <\/a> <\/a> <\/a> <\/a> <\/a> <\/a> <\/a> <\/div>\n<\/div>","protected":false},"author":214,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"@BeforeAll and @AfterAll in Non-Static Methods - ITTeacherITFreelance.hk","description":"While unit testing, we may occasionally want to use @BeforeAll and @AfterAll in non-static setup and tear-down methods. Let's see how we can do it. The post @Be"},"footnotes":""},"categories":[6],"tags":[5478],"_links":{"self":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/83803"}],"collection":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/214"}],"replies":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=83803"}],"version-history":[{"count":4,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/83803\/revisions"}],"predecessor-version":[{"id":85410,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/83803\/revisions\/85410"}],"wp:attachment":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=83803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=83803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=83803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}