import pytest from PIL import Image, ImageShow from .helper import hopper, is_win32, on_ci def test_sanity(): dir(Image) dir(ImageShow) def test_register(): # Test registering a viewer that is not a class ImageShow.register("not a class") # Restore original state ImageShow._viewers.pop() @pytest.mark.parametrize( "order", [-1, 0], ) def test_viewer_show(order): class TestViewer(ImageShow.Viewer): def show_image(self, image, **options): self.methodCalled = True return True viewer = TestViewer() ImageShow.register(viewer, order) for mode in ("1", "I;16", "LA", "RGB", "RGBA"): viewer.methodCalled = False with hopper(mode) as im: assert ImageShow.show(im) assert viewer.methodCalled # Restore original state ImageShow._viewers.pop(0) @pytest.mark.skipif( not on_ci() or is_win32(), reason="Only run on CIs; hangs on Windows CIs", ) def test_show(): for mode in ("1", "I;16", "LA", "RGB", "RGBA"): im = hopper(mode) assert ImageShow.show(im) def test_viewer(): viewer = ImageShow.Viewer() assert viewer.get_format(None) is None with pytest.raises(NotImplementedError): viewer.get_command(None) def test_viewers(): for viewer in ImageShow._viewers: viewer.get_command("test.jpg")