Function test_image_viewer

Wrapping/Python/tests/sitkExternalViewerTest.py:91–138

Test ImageViewer class functionality This test verifies: 1. Basic viewer setup and execution 2. Title setting with special characters 3. Access to viewer parameters 4. Access to global viewer settings

(test_image, capfd, viewer_command)

def test_image_viewer(test_image, capfd, viewer_command):
    """Test ImageViewer class functionality

    This test verifies:
    1. Basic viewer setup and execution
    2. Title setting with special characters
    3. Access to viewer parameters
    4. Access to global viewer settings
    """
    viewer = sitk.ImageViewer()

    # Test title with special characters
    title = "Basic Image Viewer Test"
    viewer.SetTitle(title)
    viewer.Execute(test_image)

    # Capture and verify viewer parameters
    out, _ = capfd.readouterr()


    print("\nImageViewer parameters")
    print("    Application: ", viewer.GetApplication())
    print("    Command: ", viewer.GetCommand())
    print("    Extension: ", viewer.GetFileExtension())

    print("\nGlobal ImageViewer parameters")
    print("    Search path: ", sitk.ImageViewer.GetGlobalDefaultSearchPath())
    print(
        "    Default executable names: ",
        sitk.ImageViewer.GetGlobalDefaultExecutableNames(),
    )
    print("    Process delay: ", sitk.ImageViewer.GetProcessDelay())
    print("    Debug flag: ", sitk.ImageViewer.GetGlobalDefaultDebug())

    # TODO: This the output variable does not contain the expected output
    # assert "Basic Image Viewer Test/:" in out, "Missing viewer parameter output"

    # Verify viewer configuration
    assert viewer.GetCommand(), "Viewer command not set"
    assert viewer.GetFileExtension(), "Viewer file extension not set"

    # Verify global settings
    assert sitk.ImageViewer.GetGlobalDefaultSearchPath(), "Global search path not set"
    assert sitk.ImageViewer.GetGlobalDefaultExecutableNames(), "Default executables not set"
    assert isinstance(sitk.ImageViewer.GetProcessDelay(), (int, float)), \
        "Process delay not numeric"
    assert isinstance(sitk.ImageViewer.GetGlobalDefaultDebug(), bool), \
        "Debug flag not boolean"


def test_bad_image_viewer(test_image):