zoukankan      html  css  js  c++  java
  • Junit Tests execution order

    From: http://www.java-allandsundry.com/2013/01/junit-test-method-ordering.html

    Junit until version 4.10 uses the order of test methods in a test class as returned by the reflection API as the order of test method execution –Class.getMethods(). To quote the Javadoc of getMethods() api:

    The elements in the array returned are not sorted and are not in any particular order.

    thus the order of test method execution in a test class is not predictable. This in a way is good as it encourages us as developers to write test methods which can stand on its own and to not depend on the order of test method execution.
     
     
     
    With version 4.11 of Junit the order of test method execution is not so unpredictable anymore, by default the order though not specified will be deterministic for every run. The order can further be enforced by adding a new annotation @FixMethodOrder to the test class with the following values:

    1. @FixMethodOrder(MethodSorters.DEFAULT) – deterministic order based on an internal comparator

    2. @FixMethodOrder(MethodSorters.NAME_ASCENDING) – ascending order of method names

    3. @FixMethodOrder(MethodSorters.JVM) – pre 4.11 way of depending on reflection based order

    Consider the following test case:

     1 public class ATest {
     2  @Test
     3  public void b_test_1() {
     4   System.out.println('b_test_1 called..');
     5  }
     6 
     7  @Test
     8  public void r_test_2() {
     9   System.out.println('r_test_2 called..');
    10  }
    11 
    12  @Test
    13  public void z_test_3() {
    14   System.out.println('z_test_3 called..');
    15  }
    16 
    17  @Test
    18  public void l_test_4() {
    19   System.out.println('l_test_4 called..');
    20  }
    21 }
    View Code

     Pre 4.11 running this test prints the following in my machine

    1 Running testorder.ATest
    2 r_test_2 called..
    3 z_test_3 called..
    4 b_test_1 called..
    5 l_test_4 called..
    View Code

    With NAME_ASCENDING:

    1 @FixMethodOrder(MethodSorters.NAME_ASCENDING)
    2 public class ATest
    View Code

    this is the output:

    1 Running testorder.ATest
    2 b_test_1 called..
    3 l_test_4 called..
    4 r_test_2 called..
    5 z_test_3 called..
    View Code

    There is still no way to explicitly specify other custom sorting methods which is good as the purpose of providing a predictable order is just that – to make it predictable, not to use it to add dependencies between test methods.

    Resource:

    JUnit Wiki – https://github.com/KentBeck/junit/wiki/Test-execution-order

  • 相关阅读:
    tips 前端 阻止 浏览器缓存静态资源
    tips 前端 各个设备的页面尺寸的media query 与页面高度的经验总结
    算法-第四版-练习1.3.28解答
    事件循环(event loop) && 任务队列 (task queue) && $nextTick
    element -ui之<el-table>
    node.js(三 --- stream 管道流 模块化 函数)
    node.js(二 --- events 、buffer、)
    ajax请求的所有状态码详解
    element-ui中el-tree的父元素设置好宽度后不能被子内容撑开的问题
    java获取前端请求字段的方法
  • 原文地址:https://www.cnblogs.com/glf2046/p/6207009.html
Copyright © 2011-2022 走看看