How to use the fontmake.__main__ function in fontmake

def test_run_from_designspace(self, mock):
        self.assertFalse(mock.called)
        entry.main(["-m", "someDesignspace.designspace"])
        self.assertTrue(mock.called)

def test_run_from_glyphs(self, mock):
        self.assertFalse(mock.called)
        entry.main(["-g", "someGlyphs.glyph"])
        self.assertTrue(mock.called)

def test_interpolation(data_dir, tmp_path):
    shutil.copytree(data_dir / "DesignspaceTest", tmp_path / "sources")

    fontmake.__main__.main(
        [
            "-m",
            str(tmp_path / "sources" / "DesignspaceTest.designspace"),
            "-i",
            "--output-dir",
            str(tmp_path),
        ]
    )

    assert {p.name for p in tmp_path.glob("*.*")} == {
        "MyFont-Regular.ttf",
        "MyFont-Regular.otf",
    }

    test_output_ttf = fontTools.ttLib.TTFont(tmp_path / "MyFont-Regular.ttf")
    assert test_output_ttf["OS/2"].usWeightClass == 400

def test_mti_sources(data_dir, tmp_path):
    shutil.copytree(data_dir / "InterpolateLayoutTest", tmp_path / "sources")

    fontmake.__main__.main(
        [
            "-g",
            str(tmp_path / "sources" / "InterpolateLayoutTest.glyphs"),
            "--designspace-path",
            str(tmp_path / "InterpolateLayoutTest.designspace"),
            "--master-dir",
            str(tmp_path / "master_ufos"),
            "--instance-dir",
            str(tmp_path / "instance_ufos"),
            "--mti-source",
            str(tmp_path / "sources" / "InterpolateLayoutTest.plist"),
            "--no-production-names",
            "--output-dir",
            str(tmp_path),
        ]
    )