Fixed database typo and removed unnecessary class identifier.

venv/Lib/site-packages/matplotlib/tests/test_basic.py

@@ -0,0 +1,53 @@
+import builtins
+import os
+import subprocess
+import sys
+import textwrap
+
+
+def test_simple():
+    assert 1 + 1 == 2
+
+
+def test_override_builtins():
+    import pylab
+
+    ok_to_override = {
+        '__name__',
+        '__doc__',
+        '__package__',
+        '__loader__',
+        '__spec__',
+        'any',
+        'all',
+        'sum',
+        'divmod'
+    }
+    overridden = False
+    for key in dir(pylab):
+        if key in dir(builtins):
+            if (getattr(pylab, key) != getattr(builtins, key) and
+                    key not in ok_to_override):
+                print("'%s' was overridden in globals()." % key)
+                overridden = True
+
+    assert not overridden
+
+
+def test_lazy_imports():
+    source = textwrap.dedent("""
+    import sys
+
+    import matplotlib.figure
+    import matplotlib.backend_bases
+    import matplotlib.pyplot
+
+    assert 'matplotlib._tri' not in sys.modules
+    assert 'matplotlib._qhull' not in sys.modules
+    assert 'matplotlib._contour' not in sys.modules
+    assert 'urllib.request' not in sys.modules
+    """)
+
+    subprocess.check_call(
+        [sys.executable, '-c', source],
+        env={**os.environ, "MPLBACKEND": "", "MATPLOTLIBRC": os.devnull})