How to use the idom.client.web_module_exists function in idom

def test_install():
    client.delete_web_modules(["jquery"], skip_missing=True)
    client.install("jquery")

    assert client.web_module_exists("jquery")
    assert client.web_module_exists("/jquery")  # works with a leading slash too
    assert "jquery" in client.installed()
    with assert_file_is_touched(client.web_module_path("jquery")):
        client.install("jquery", force=True)

    with pytest.raises(ValueError, match="already exists"):
        # can't register a module with the same name
        client.register_web_module("jquery", Path() / "some-module.js")

    client.delete_web_modules("jquery")
    assert not client.web_module_exists("jquery")
    assert "jquery" not in client.installed()

def test_install_namespace_package():
    client.install("@material-ui/core")
    assert client.web_module_exists("@material-ui/core")
    expected = "../web_modules/@material-ui/core.js"
    assert client.web_module_url("@material-ui/core") == expected

def test_install_with_exports(capsys):
    client.delete_web_modules(["preact", "preact/hooks"], skip_missing=True)

    main("install", "preact", "--exports", "preact/hooks")
    assert client.web_module_exists("preact/hooks")
    main("installed")
    captured = capsys.readouterr()
    assert "- preact" in captured.out
    assert "- preact/hooks" in captured.out

    main("uninstall", "preact")
    assert not client.web_module_exists("preact/hooks")
    main("installed")
    captured = capsys.readouterr()
    assert "- preact" not in captured.out
    assert "- preact/hooks" not in captured.out

def test_module_deletion():
    # also test install
    jquery = idom.Module("jquery", install="jquery@3.5.0")
    assert idom.client.web_module_exists(jquery.name)
    with idom.client.web_module_path(jquery.name).open() as f:
        assert "jQuery JavaScript Library v3.5.0" in f.read()
    jquery.delete()
    assert not idom.client.web_module_exists(jquery.name)

def test_custom_module(driver, display, victory):
    my_chart = Module("my/chart", source=HERE / "my_chart.js")

    assert client.web_module_exists("my/chart")
    assert client.web_module_url("my/chart") == "../web_modules/my/chart.js"

    display(my_chart.Import("Chart"))

    driver.find_element_by_class_name("VictoryContainer")

    my_chart.delete()

    assert not client.web_module_exists("my/chart")

def test_install():
    client.delete_web_modules(["jquery"], skip_missing=True)
    client.install("jquery")

    assert client.web_module_exists("jquery")
    assert client.web_module_exists("/jquery")  # works with a leading slash too
    assert "jquery" in client.installed()
    with assert_file_is_touched(client.web_module_path("jquery")):
        client.install("jquery", force=True)

    with pytest.raises(ValueError, match="already exists"):
        # can't register a module with the same name
        client.register_web_module("jquery", Path() / "some-module.js")

    client.delete_web_modules("jquery")
    assert not client.web_module_exists("jquery")
    assert "jquery" not in client.installed()

def test_delete_module(victory):
    victory.delete()
    assert not client.web_module_exists("victory")

    with pytest.raises(ValueError, match="does not exist"):
        victory.delete()

def test_simple_install(capsys):
    client.delete_web_modules("jquery", skip_missing=True)

    main("install", "jquery")
    assert client.web_module_exists("jquery")
    main("installed")
    captured = capsys.readouterr()
    assert "- jquery" in captured.out

    with assert_file_is_touched(client.web_module_path("jquery")):
        main("install", "jquery", "--force")
    assert client.web_module_exists("jquery")

    main("uninstall", "jquery")
    assert not client.web_module_exists("jquery")