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Support setting plotly.js path for Kaleido v1 image export#5207

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emilykl merged 5 commits intomainfromsupport-setting-plotlyjs-path
Jun 3, 2025
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improve pio.defaults test
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@emilykl
emilykl committedJun 2, 2025
commitf0aba766c59dbb51a4ce802033e66361a77f3dcd
90 changes: 87 additions & 3 deletionstests/test_optional/test_kaleido/test_kaleido.py
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Original file line numberDiff line numberDiff line change
Expand Up@@ -154,15 +154,99 @@ def test_bytesio():

def test_defaults():
"""Test that image output defaults can be set using pio.defaults.*"""
test_fig = go.Figure(fig)
test_image_bytes = b"mock image data"

# Check initial defaults
assert pio.defaults.default_format == "png"
assert pio.defaults.default_width == 700
assert pio.defaults.default_height == 500
assert pio.defaults.default_scale == 1
assert pio.defaults.mathjax is None
assert pio.defaults.topojson is None
assert pio.defaults.plotlyjs is None

try:
assert pio.defaults.default_format == "png"
# Set new defaults
pio.defaults.default_format = "svg"
pio.defaults.default_width = 701
pio.defaults.default_height = 501
pio.defaults.default_scale = 2
pio.defaults.mathjax = (
"https://cdn.jsdelivr.net/npm/mathjax@3.1.2/es5/tex-svg.js"
)
pio.defaults.topojson = "path/to/topojson/files/"
pio.defaults.plotlyjs = "https://cdn.plot.ly/plotly-3.0.0.js"

# Check that new defaults are saved
assert pio.defaults.default_format == "svg"
result = pio.to_image(fig, format="svg", validate=False)
assert result.startswith(b"<svg")
assert pio.defaults.default_width == 701
assert pio.defaults.default_height == 501
assert pio.defaults.default_scale == 2
assert (
pio.defaults.mathjax
== "https://cdn.jsdelivr.net/npm/mathjax@3.1.2/es5/tex-svg.js"
)
assert pio.defaults.topojson == "path/to/topojson/files/"
assert pio.defaults.plotlyjs == "https://cdn.plot.ly/plotly-3.0.0.js"

if kaleido_major() > 0:
# Check that all the defaults values are passed through to the function call to calc_fig_sync
with patch(
"plotly.io._kaleido.kaleido.calc_fig_sync",
return_value=test_image_bytes,
) as mock_calc_fig:
result = pio.to_image(test_fig, validate=False)

# Verify calc_fig_sync was called with correct args
# taken from pio.defaults
mock_calc_fig.assert_called_once()
args, kwargs = mock_calc_fig.call_args
assert args[0] == test_fig.to_dict()
assert kwargs["opts"]["format"] == "svg"
assert kwargs["opts"]["width"] == 701
assert kwargs["opts"]["height"] == 501
assert kwargs["opts"]["scale"] == 2
assert kwargs["topojson"] == "path/to/topojson/files/"
# mathjax and plotlyjs are passed through in kopts
assert (
kwargs["kopts"]["mathjax"]
== "https://cdn.jsdelivr.net/npm/mathjax@3.1.2/es5/tex-svg.js"
)
assert (
kwargs["kopts"]["plotlyjs"]
== "https://cdn.plot.ly/plotly-3.0.0.js"
)

else:
# Check that all the default values have been set in pio._kaleido.scope
assert pio._kaleido.scope.default_format == "svg"
assert pio._kaleido.scope.default_width == 701
assert pio._kaleido.scope.default_height == 501
assert pio._kaleido.scope.default_scale == 2
assert (
pio._kaleido.scope.mathjax
== "https://cdn.jsdelivr.net/npm/mathjax@3.1.2/es5/tex-svg.js"
)
assert pio._kaleido.scope.topojson == "path/to/topojson/files/"
assert pio._kaleido.scope.plotlyjs == "https://cdn.plot.ly/plotly-3.0.0.js"

finally:
# Reset defaults to original values and check that they are restored
pio.defaults.default_format = "png"
pio.defaults.default_width = 700
pio.defaults.default_height = 500
pio.defaults.default_scale = 1
pio.defaults.mathjax = None
pio.defaults.topojson = None
pio.defaults.plotlyjs = None
assert pio.defaults.default_format == "png"
assert pio.defaults.default_width == 700
assert pio.defaults.default_height == 500
assert pio.defaults.default_scale == 1
assert pio.defaults.mathjax is None
assert pio.defaults.topojson is None
assert pio.defaults.plotlyjs is None


def test_fig_write_image():
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