JUnit + Java + ErrorCollector issue



我在Java中使用ErrorCollectors时遇到了一些问题。

我有一些代码,它比较两个值。如果值匹配,则会产生一个过程。如果值不匹配,则失败。听起来很简单。所以我创建了一个基本的测试用例:

public class CB_Test {

    @Rule
    public ErrorCollector collector = new ErrorCollector();
    @Before
    public void setUp() {
        //steps = new WebDriverSteps(new FirefoxDriver());
        //steps = new WebDriverSteps();
    }
    @Test
    public void testme() {
        String checkMe;
        String value;
        checkMe = "1234";
        value   = "2234";
        System.out.println("value coming in : " + value);
        System.out.println("value to check  : " + checkMe);
        collector.checkThat("Check values match", value, is(checkMe));
    }
}

它的行为正是我想要的。然而,我想让这个代码能够从其他地方调用。所以我创建了这样的"主"文件:

public class ABC_Test {
    @Before
    public void setUp() {
        //steps = new WebDriverSteps(new FirefoxDriver());
        //steps = new WebDriverSteps();
    }
    @Test
    public void check() {
        CheckVal dv = new CheckVal();
        try {
            dv.checkTable("4234");
        } catch (AssertionError er) {
            System.out.println("22");
        } catch (Exception e) {
            System.out.println("23");
        } catch (Throwable t) {
            System.out.println("24");
        }
    }
}

并将代码移到中进行检查

public class CheckVal {
    @Rule
    public ErrorCollector collector = new ErrorCollector();
    public void checkTable(String value) {
        String checkMe;
        checkMe = "1234";
        System.out.println("value coming in : " + value);
        System.out.println("value to check  : " + checkMe);
        collector.checkThat("Check values match", value, is(checkMe));
    }
}

但现在,当我运行代码时,我总是会通过,即使我引入了一个值来导致生成失败。我看不出我在这里做错了什么。(我知道代码很乱——这只是我试图将事情分解为最简单的方式来尝试查看我的问题。)

@Rule不包含在测试中的类中,该类由测试运行器运行并处理所有注释。你的代码,在这一点上只是代码。

您需要更改代码以将@Rule移动到测试中的类,以便处理注释:

import org.junit.*;
import org.junit.rules.ErrorCollector;
public class ABC_Test {
    @Rule
    public ErrorCollector collector = new ErrorCollector();
    @Before
    public void setUp() {
       //steps = new WebDriverSteps(new FirefoxDriver());
       //steps = new WebDriverSteps();
    }
   @Test
   public void check() {
      CheckVal dv = new CheckVal(collector);
      try {
          dv.checkTable("4234");
      } catch (AssertionError er) {
        System.out.println("22");
      } catch (Exception e) {
        System.out.println("23");
      } catch (Throwable t) {
        System.out.println("24");
      }
  }

}

然后修改可重悬浮类以接受ErrorCollector并正常处理:

import org.junit.*;
import org.junit.rules.ErrorCollector;
import org.hamcrest.CoreMatchers;
public class CheckVal {
public ErrorCollector collector = null;
public CheckVal(ErrorCollector collector) {
    this.collector = collector;
}
public void checkTable(String value) {
    String checkMe;
    checkMe = "1234";
    System.out.println("value coming in : " + value);
    System.out.println("value to check  : " + checkMe);
    collector.checkThat("Check values match", value, CoreMatchers.is(checkMe));
}

}

IntelliJ(或您的测试运行者)然后按预期报告错误:

java.lang.AssertionError: Check values match
Expected: is "1234"
    but: was "4234"

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