arraylength中操作数堆栈上的错误类型

Question

我正在尝试使用powermock测试方法.我还没有写过任何测试用例.只是试图为Mocking设置课程.这是我到目前为止:

@RunWith(PowerMockRunner.class)
@PrepareForTest({ ReadRubric.class })
public class ReadRubricTest {
    @Before
    public void setUp() throws Exception {
        PowerMockito.mock(ReadRubric.class);
    }

    @After
    public void tearDown() throws Exception {
    }

    @Test
    public void invalidFile() throws Exception {
    }
}

当我尝试运行此测试时,我收到以下错误.

java.lang.VerifyError: Bad type on operand stack in arraylength
    Exception Details:
      Location:
        com/cerner/devcenter/wag/processor/ReadRubric.readRubric()Ljava/util/List; @809: arraylength
      Reason:
        Invalid type: 'java/lang/Object' (current frame, stack[0])
      Current Frame:
        bci: @809
        flags: { }
        locals: { 'java/util/ArrayList', 'au/com/bytecode/opencsv/CSVReader', top, top, '[Ljava/lang/String;', 'com/cerner/devcenter/wag/processor/Rule', 'java/lang/Object', 'java/lang/Object', top, top, top, top, top, top, top, 'java/lang/Object' }
        stack: { 'java/lang/Object' }

java -version on cmd gives me 1.7.0_65

java_home is set to C:\Program Files\Java\jdk1.7.0_65

On eclipse I am using jre 7 and the compiler level is 1.7

在我的maven中,我添加了以下依赖项以允许接受字符串而不是字符的开关案例:

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.0</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
         </plugin>

任何人都可以帮我解决这个问题吗？

这是我正在测试的方法:

public static List<Rule> readRubric() throws WAGException, IOException {
        List<Rule> ruleList = new ArrayList<Rule>();
        CSVReader rubricReader = null;
            File file = new File(RUBRIC_FILE_NAME);
            FileReader fileReader = new FileReader(file);
            rubricReader = new CSVReader(fileReader);
            String[] ruleRecord = null;
            //rubricReader.readNext();
            while ((ruleRecord = rubricReader.readNext()) != null) {
                Rule rule = new Rule();
                rule.setRuleName(ruleRecord[0].trim());
                String parameters[] = ruleRecord[1].split(",");
                rule.addParameter(Arrays.asList(parameters));
                rule.setPoints(Integer.parseInt(ruleRecord[2].trim()));
                rule.setRuleEngine(ruleRecord[3].trim());
            rule.setComment(ruleRecord[4].trim());
                    ruleList.add(rule);
        }
            rubricReader.close();
        return ruleList;
    }

我在网上找到了解决方案:它说-XX:-UseSplitVerifier我在运行测试时需要添加到我的VM参数中.当我这样做时,测试运行.但我需要它与maven一起运行,因为解决方案说我需要将以下插件添加到maven:

<plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.14.1</version>
            <configuration>
                <argLine>-XX:-UseSplitVerifier</argLine>
            </configuration>
        </plugin>
    </plugins>

但即使将其添加到我的POM中,此特定测试也会失败. 链接到解决方案

Answer 1

因此,经过几个小时的工作,我找到了问题的根本原因.在Java 7u65中,它们使字节代码验证器更加严格,字节代码验证器正在读取PowerMock字节代码并抛出VerifyError.所以,基本上,PowerMock的字节代码没有传递字节码验证器.唯一的方法是添加-XX:-UseSplitVerifier 为VM参数或切换到Java 6.

就我而言,当我删除ruleRecord[1].split(",")并实现自己的分割功能时,测试工作正常.我猜Powermock会在我们使用时弄乱字节码,例如像whenNew().希望这可以帮助.