init

2026-02-12 23:22:11 +08:00
parent 7b09eb3d89
commit 89660bba4e
5988 changed files with 2517516 additions and 0 deletions
@@ -0,0 +1,62 @@
+"""
+Backend-loading machinery tests, using variations on the template backend.
+"""
+
+import sys
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+import matplotlib as mpl
+from matplotlib import pyplot as plt
+from matplotlib.backends import backend_template
+from matplotlib.backends.backend_template import (
+    FigureCanvasTemplate, FigureManagerTemplate)
+
+
+def test_load_template():
+    mpl.use("template")
+    assert type(plt.figure().canvas) == FigureCanvasTemplate
+
+
+def test_load_old_api(monkeypatch):
+    mpl_test_backend = SimpleNamespace(**vars(backend_template))
+    mpl_test_backend.new_figure_manager = (
+        lambda num, *args, FigureClass=mpl.figure.Figure, **kwargs:
+        FigureManagerTemplate(
+            FigureCanvasTemplate(FigureClass(*args, **kwargs)), num))
+    monkeypatch.setitem(sys.modules, "mpl_test_backend", mpl_test_backend)
+    mpl.use("module://mpl_test_backend")
+    assert type(plt.figure().canvas) == FigureCanvasTemplate
+    plt.draw_if_interactive()
+
+
+def test_show(monkeypatch):
+    mpl_test_backend = SimpleNamespace(**vars(backend_template))
+    mock_show = MagicMock()
+    monkeypatch.setattr(
+        mpl_test_backend.FigureManagerTemplate, "pyplot_show", mock_show)
+    monkeypatch.setitem(sys.modules, "mpl_test_backend", mpl_test_backend)
+    mpl.use("module://mpl_test_backend")
+    plt.show()
+    mock_show.assert_called_with()
+
+
+def test_show_old_global_api(monkeypatch):
+    mpl_test_backend = SimpleNamespace(**vars(backend_template))
+    mock_show = MagicMock()
+    monkeypatch.setattr(mpl_test_backend, "show", mock_show, raising=False)
+    monkeypatch.setitem(sys.modules, "mpl_test_backend", mpl_test_backend)
+    mpl.use("module://mpl_test_backend")
+    plt.show()
+    mock_show.assert_called_with()
+
+
+def test_load_case_sensitive(monkeypatch):
+    mpl_test_backend = SimpleNamespace(**vars(backend_template))
+    mock_show = MagicMock()
+    monkeypatch.setattr(
+        mpl_test_backend.FigureManagerTemplate, "pyplot_show", mock_show)
+    monkeypatch.setitem(sys.modules, "mpl_Test_Backend", mpl_test_backend)
+    mpl.use("module://mpl_Test_Backend")
+    plt.show()
+    mock_show.assert_called_with()