How to use the wily.__main__ function in wily

def test_build_not_git_repo(tmpdir):
    """
    Test that build defaults to filesystem in a non-git directory
    """
    with patch("wily.logger") as logger:
        runner = CliRunner()
        result = runner.invoke(main.cli, ["--path", tmpdir, "build", "test.py"])
        assert result.exit_code == 0, result.stdout
        cache_path = tmpdir / ".wily"
        assert cache_path.exists()
        index_path = tmpdir / ".wily" / "filesystem" / "index.json"
        assert index_path.exists()

def test_diff_output(builddir):
    """ Test the diff feature with no changes """
    runner = CliRunner()
    result = runner.invoke(
        main.cli, ["--debug", "--path", builddir, "diff", _path], catch_exceptions=False
    )
    assert result.exit_code == 0, result.stdout
    assert "test.py" not in result.stdout

def test_operator(operator, gitdir):
    runner = CliRunner()
    result = runner.invoke(
        main.cli, ["--debug", "--path", gitdir, "build", "src", "-o", operator]
        , catch_exceptions=False
    )
    assert result.exit_code == 0, result.stdout

    result = runner.invoke(main.cli, ["--debug", "--path", gitdir, "report", _path], catch_exceptions=False)
    assert result.exit_code == 0, result.stdout

    result = runner.invoke(
        main.cli, ["--debug", "--path", gitdir, "diff", _path, "--all"]
        , catch_exceptions=False
    )
    assert result.exit_code == 0, result.stdout
    assert "test.py" in result.stdout

    complex_test = """
            import abc
            foo = 1
            def function1():
                a = 1 + 1
                if a == 2:
                    print(1)

def test_report_no_cache(tmpdir, cache_path):
    runner = CliRunner()
    result = runner.invoke(
        main.cli, ["--path", tmpdir, "--cache", cache_path, "report", _path]
    )
    assert result.exit_code == 1, result.stdout

def test_setup():
    """
    Test that CLI when called with help options
    """
    with patch("wily.__main__.handle_no_cache", return_value=True) as handle_no_cache:
        runner = CliRunner()
        result = runner.invoke(main.cli, ["setup"])
        assert result.exit_code == 0
        assert handle_no_cache.called_once

def test_graph_all(builddir):
    """ Test the graph feature """
    runner = CliRunner()
    with patch.dict("os.environ", values=PATCHED_ENV, clear=True):
        result = runner.invoke(
            main.cli, ["--path", builddir, "graph", "src/test.py", "raw.loc", "--all"]
        )
    assert result.exit_code == 0, result.stdout

def test_rank_directory_no_path_target(builddir):
    """ Test the rank feature with no path target """
    runner = CliRunner()
    result = runner.invoke(main.cli, ["rank", "src/", "raw.comments"])
    assert result.exit_code == 0, result.stdout

def test_report_html_format_target_file(builddir):
    """
    Test that report works with HTML as format
    """
    runner = CliRunner()
    result = runner.invoke(
        main.cli,
        ["--path", builddir, "report", _path, "--format", "HTML", "-o", "foo/bar.html"],
    )
    path = Path().cwd()
    path = path / "foo" / "bar.html"

    assert path.exists()
    assert "" in path.read_text()
    assert result.exit_code == 0, result.stdout
    assert "Not found" not in result.stdout

def test_operator(operator, gitdir):
    runner = CliRunner()
    result = runner.invoke(
        main.cli, ["--debug", "--path", gitdir, "build", "src", "-o", operator]
        , catch_exceptions=False
    )
    assert result.exit_code == 0, result.stdout

    result = runner.invoke(main.cli, ["--debug", "--path", gitdir, "report", _path], catch_exceptions=False)
    assert result.exit_code == 0, result.stdout

    result = runner.invoke(
        main.cli, ["--debug", "--path", gitdir, "diff", _path, "--all"]
        , catch_exceptions=False
    )
    assert result.exit_code == 0, result.stdout
    assert "test.py" in result.stdout

    complex_test = """
            import abc