如何覆盖Java中写文件func

Question

我做了一个简单的功能？我给出一个对象列表，然后获取其标题（只是一些字符串），然后排序并写入文件 当我对此函数进行测试时，覆盖范围是0行，我不知道为什么

    public static void writeToFile(List<Appliances> appliances) throws IOException {
        try (FileWriter writer = new FileWriter("\\result.csv")) {
            appliances.stream().sorted(Comparator.comparing(Appliances::getName)).collect(Collectors.toList());

            String previousClassName = "";

            for (var app : appliances) {
                if (!app.getClass().getSimpleName().equals(previousClassName)) {
                    writer.write(app.getHeaders());
                    writer.write("\r\n");
                    writer.write(app.toCSV());
                    writer.write("\r\n");
                    previousClassName = app.getClass().getSimpleName();
                }
            }
        }
    }

这是我的单位测试代码，我也不是本地英语的人，不要写聪明的单词，只是代码，只有一个小文字一个完美的解决方案，非常感谢

@Test
    void writeToFile() throws Exception {

        try (FileReader expected = new FileReader(String.valueOf(path));
             BufferedReader expectedBR = new BufferedReader(expected);
             FileReader result = new FileReader(String.valueOf(path2));
             BufferedReader resultBR = new BufferedReader(result);
        ) {
            String line1;
            String line2;
            while ((line1 = expectedBR.readLine()) != null & (line2 = resultBR.readLine()) != null) {

                Assertions.assertEquals(line1, line2);
            }
        }
    }