Junit在assertTrue字符串比较时返回错误

Question

     StringWriter result = runMethod.getOutput();
   String expected = "<3>textValue</3>"
    assertTrue("Should have contained the required result", result.toString().contains(expected));

为什么Junit会在这里返回错误？

Answer 1

我刚试过这个，它运行正常。

如果字符串不匹配，则会出现以下错误。 java.lang.AssertionError：应该包含所需的结果

import static org.junit.Assert.assertTrue;

import java.io.StringWriter;

import org.junit.Test;

public class XYZ
{

    @Test
    public void test()
    {

        StringWriter result = new StringWriter();
        result.append("<3>textValue</3>");
        String expected = "<3>textValue</3>";
        assertTrue("Should have contained the required result", result.toString().contains(expected));
    }

}