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Backport PR #18184 on branch v3.3.x (Go back to checking figures for their manager in destroy.) #18214

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Merged
merged 1 commit into from
Aug 11, 2020
Merged

Backport PR #18184 on branch v3.3.x (Go back to checking figures for their manager in destroy.) #18214

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7 changes: 4 additions & 3 deletions lib/matplotlib/_pylab_helpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -71,9 +71,10 @@ def destroy(cls, num):
@classmethod
def destroy_fig(cls, fig):
"""Destroy figure *fig*."""
canvas = getattr(fig, "canvas", None)
manager = getattr(canvas, "manager", None)
cls.destroy(manager)
num = next((manager.num for manager in cls.figs.values()
if manager.canvas.figure == fig), None)
if num is not None:
cls.destroy(num)

@classmethod
def destroy_all(cls):
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9 changes: 9 additions & 0 deletions lib/matplotlib/tests/test_backend_bases.py
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Expand Up @@ -60,6 +60,15 @@ def test_get_default_filename(tmpdir):
assert filename == 'image.png'


def test_canvas_change():
fig = plt.figure()
# Replaces fig.canvas
canvas = FigureCanvasBase(fig)
# Should still work.
plt.close(fig)
assert not plt.fignum_exists(fig.number)


@pytest.mark.backend('pdf')
def test_non_gui_warning(monkeypatch):
plt.subplots()
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9 changes: 7 additions & 2 deletions lib/matplotlib/tests/test_backends_interactive.py
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Expand Up @@ -146,8 +146,13 @@ def check_alt_backend(alt_backend):
@pytest.mark.parametrize("toolbar", ["toolbar2", "toolmanager"])
@pytest.mark.flaky(reruns=3)
def test_interactive_backend(backend, toolbar):
if backend == "macosx" and toolbar == "toolmanager":
pytest.skip("toolmanager is not implemented for macosx.")
if backend == "macosx":
if toolbar == "toolmanager":
pytest.skip("toolmanager is not implemented for macosx.")
if toolbar == "toolbar2" and os.environ.get('TRAVIS'):
# See https://github.com/matplotlib/matplotlib/issues/18213
pytest.skip("toolbar2 for macosx is buggy on Travis.")

proc = subprocess.run(
[sys.executable, "-c", _test_script,
json.dumps({"toolbar": toolbar})],
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