单元测试中未涵盖的 catch 块

Question

我已经写了异常通过的测试用例，但是没有覆盖代码覆盖。

请帮帮我，我试了很多方法都没有解决。

public String checkJiraStatus(HttpURLConnection httpURLConnection) throws IOException {
    try {
        BufferedReader in = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
        String inputLine;
        StringBuilder stringBuilder = new StringBuilder();
        while ((inputLine = in.readLine()) != null) {
            stringBuilder.append(inputLine);
        }
        in.close();
        JSONObject jsonObject = new JSONObject(String.valueOf(stringBuilder));
        JSONObject fields = (JSONObject) jsonObject.get("fields");
        JSONObject status = (JSONObject) fields.get("status");
        return (String) status.get("name");
    }catch (IOException |JSONException ioException) {
        throw new IOException("Problem while fetching the data"+ioException.getMessage());
    }
}

测试用例正确通过但没有给出代码覆盖率。

@Test(expected = Exception.class)
public void testIoException() throws Exception {
    when(mockJiraFunctions.checkJiraStatus(any())).thenThrow(new 
            IOException("Problem while fetching the data"));
    jiraFunctions.checkJiraStatus(any());
}

Answer 1

正如我在评论中提到的，您应该运行您的真实方法才能获得报道。并且您应该创建一种情况，您的函数将抛出异常。例如，在您的情况下，您可以制作 HttpURLConnection class 的模拟对象，并在您调用 getInputStream() 方法时让他抛出 IOException。

所以你的测试会像

@Test(expected = Exception.class)
public void test() {
    HttpURLConnection connectionMock = mock(HttpURLConnection.class);
    when(connectionMock.getInputStream()).thenThrow(new IOException());
    jiraFunctions.checkJiraStatus(connectionMock);
}

单元测试中未涵盖的 catch 块

catch block not covered in unit testing

java

junit

json

unit-testing

exception