I am using Java nio API and have a below code, but unable to perform mocking on the below code.

Path path = Paths.get(filePath);
long sizeInBytes = Files.size(path);
long recordCount = 0;
try (Stream<String> lines = Files.lines(path, Charset.defaultCharset()).skip(1)) {
    recordCount = lines.count();
}

Code I wrote below is

public class SomeTest {
    private Path path;
    @ClassRule
    public static final TemporaryFolder testdata = new TemporaryFolder();

    @Before
    public void setup() throws IOException {
        PowerMockito.mockStatic(Paths.class);
        PowerMockito.mockStatic(Files.class);
        
        path = mock(Path.class);
    }

    @Test
    public void testAbRequestAuditTasklet() throws Exception {
        final Path path = testdata.newFile().toPath();
        
        Answer<Stream<String>> answer = new Answer<Stream<String>>() {
            public Stream<String> answer(InvocationOnMock invocation) throws Throwable {
                return Stream.of("A", "B");
            }
        };
        
        when(Paths.get(testdata.getRoot().toURI())).thenReturn(path);  //line-24 - here exception is coming
        when(Files.size(any())).thenReturn(5000L);
        when(Files.lines(any(), any())).thenAnswer(answer);
    }
}