Merge pull request matplotlib#3244 from jenshnielsen/rcwarnings

Filter warnings in rcparams test (and others)

Author: tacaswell

lib/matplotlib/tests/test_delaunay.py

@@ -3,10 +3,16 @@
 
 import six
 from six.moves import xrange
+import warnings
 
 import numpy as np
 from matplotlib.testing.decorators import image_comparison, knownfailureif
-from matplotlib.delaunay.triangulate import Triangulation
+from matplotlib.cbook import MatplotlibDeprecationWarning
+
+with warnings.catch_warnings():
+    # the module is deprecated. The tests should be removed when the module is.
+    warnings.simplefilter('ignore', MatplotlibDeprecationWarning)
+    from matplotlib.delaunay.triangulate import Triangulation
 from matplotlib import pyplot as plt
 import matplotlib as mpl
 

lib/matplotlib/tests/test_mlab.py

@@ -6,6 +6,7 @@
 import tempfile
 
 from numpy.testing import assert_allclose, assert_array_equal
+import numpy.ma.testutils as matest
 import numpy as np
 from nose.tools import (assert_equal, assert_almost_equal, assert_not_equal,
                         assert_true, assert_raises)
@@ -2714,7 +2715,7 @@ def get_z(x, y):
     z_masked = np.ma.array(z, mask=[False, False, False, True, False])
     correct_zi_masked = np.ma.masked_where(xi + yi > 1.0, get_z(xi, yi))
     zi = mlab.griddata(x, y, z_masked, xi, yi, interp='linear')
-    np.testing.assert_array_almost_equal(zi, correct_zi_masked)
+    matest.assert_array_almost_equal(zi, correct_zi_masked)
     np.testing.assert_array_equal(np.ma.getmask(zi),
                                   np.ma.getmask(correct_zi_masked))
 

lib/matplotlib/tests/test_rcparams.py

@@ -5,6 +5,7 @@
 
 import os
 import sys
+import warnings
 
 import matplotlib as mpl
 from matplotlib.tests import assert_str_equal
@@ -97,29 +98,36 @@ def test_RcParams_class():
 
 def test_Bug_2543():
     # Test that it possible to add all values to itself / deepcopy
-    # This was not possible because validate_bool_maybe_none did not 
+    # This was not possible because validate_bool_maybe_none did not
     # accept None as an argument.
     # https://github.com/matplotlib/matplotlib/issues/2543
-    with mpl.rc_context():
-        _copy = mpl.rcParams.copy()
-        for key in six.iterkeys(_copy):
-            mpl.rcParams[key] = _copy[key]
-        mpl.rcParams['text.dvipnghack'] = None  
-    with mpl.rc_context():
-        from copy import deepcopy
-        _deep_copy = deepcopy(mpl.rcParams)
-    from matplotlib.rcsetup import validate_bool_maybe_none, validate_bool
-    # real test is that this does not raise
-    assert_true(validate_bool_maybe_none(None) is None)
-    assert_true(validate_bool_maybe_none("none") is None)
-    _fonttype = mpl.rcParams['svg.fonttype']
-    assert_true(_fonttype == mpl.rcParams['svg.embed_char_paths'])
-    with mpl.rc_context():
-        mpl.rcParams['svg.embed_char_paths'] = False
-        assert_true(mpl.rcParams['svg.fonttype'] == "none")
+    # We filter warnings at this stage since a number of them are raised
+    # for deprecated rcparams as they should. We dont want these in the
+    # printed in the test suite.
+    with warnings.catch_warnings():
+        warnings.filterwarnings('ignore',
+                                message='.*(deprecated|obsolete)',
+                                category=UserWarning)
+        with mpl.rc_context():
+            _copy = mpl.rcParams.copy()
+            for key in six.iterkeys(_copy):
+                mpl.rcParams[key] = _copy[key]
+            mpl.rcParams['text.dvipnghack'] = None
+        with mpl.rc_context():
+            from copy import deepcopy
+            _deep_copy = deepcopy(mpl.rcParams)
+        from matplotlib.rcsetup import validate_bool_maybe_none, validate_bool
+        # real test is that this does not raise
+        assert_true(validate_bool_maybe_none(None) is None)
+        assert_true(validate_bool_maybe_none("none") is None)
+        _fonttype = mpl.rcParams['svg.fonttype']
+        assert_true(_fonttype == mpl.rcParams['svg.embed_char_paths'])
+        with mpl.rc_context():
+            mpl.rcParams['svg.embed_char_paths'] = False
+            assert_true(mpl.rcParams['svg.fonttype'] == "none")
 
 def test_Bug_2543_newer_python():
-    # only split from above because of the usage of assert_raises 
+    # only split from above because of the usage of assert_raises
     # as a context manager, which only works in 2.7 and above
     if sys.version_info[:2] < (2, 7):
         raise nose.SkipTest("assert_raises as context manager not supported with Python < 2.7")
@@ -130,8 +138,8 @@ def test_Bug_2543_newer_python():
         validate_bool(None)
     with assert_raises(ValueError):
         with mpl.rc_context():
-            mpl.rcParams['svg.fonttype'] = True  
-    
+            mpl.rcParams['svg.fonttype'] = True
+
 if __name__ == '__main__':
     import nose
     nose.runmodule(argv=['-s', '--with-doctest'], exit=False)

lib/matplotlib/tests/test_streamplot.py

@@ -42,7 +42,8 @@ def test_masks_and_nans():
     mask[40:60, 40:60] = 1
     U = np.ma.array(U, mask=mask)
     U[:20, :20] = np.nan
-    plt.streamplot(X, Y, U, V, color=U, cmap=plt.cm.Blues)
+    with np.errstate(invalid='ignore'):
+        plt.streamplot(X, Y, U, V, color=U, cmap=plt.cm.Blues)
 
 
 @cleanup

lib/matplotlib/tests/test_subplots.py

@@ -1,6 +1,7 @@
 from __future__ import (absolute_import, division, print_function,
                         unicode_literals)
 
+import warnings
 import six
 from six.moves import xrange
 
@@ -105,10 +106,16 @@ def test_exceptions():
     # TODO should this test more options?
     assert_raises(ValueError, plt.subplots, 2, 2, sharex='blah')
     assert_raises(ValueError, plt.subplots, 2, 2, sharey='blah')
-    assert_raises(ValueError, plt.subplots, 2, 2, -1)
-    # uncomment this for 1.5
-    # assert_raises(ValueError, plt.subplots, 2, 2, 0)
-    assert_raises(ValueError, plt.subplots, 2, 2, 5)
+    # We filter warnings in this test which are genuine since
+    # the pount of this test is to ensure that this raises.
+    with warnings.catch_warnings():
+        warnings.filterwarnings('ignore',
+                                message='.*sharex\ argument\ to\ subplots',
+                                category=UserWarning)
+        assert_raises(ValueError, plt.subplots, 2, 2, -1)
+        # uncomment this for 1.5
+        # assert_raises(ValueError, plt.subplots, 2, 2, 0)
+        assert_raises(ValueError, plt.subplots, 2, 2, 5)
 
 
 @image_comparison(baseline_images=['subplots_offset_text'], remove_text=False)

lib/matplotlib/tests/test_tightlayout.py

@@ -2,6 +2,7 @@
                         unicode_literals)
 
 import six
+import warnings
 
 import numpy as np
 
@@ -10,12 +11,14 @@
 from nose.tools import assert_raises
 from numpy.testing import assert_array_equal
 
+
 def example_plot(ax, fontsize=12):
-     ax.plot([1, 2])
-     ax.locator_params(nbins=3)
-     ax.set_xlabel('x-label', fontsize=fontsize)
-     ax.set_ylabel('y-label', fontsize=fontsize)
-     ax.set_title('Title', fontsize=fontsize)
+    ax.plot([1, 2])
+    ax.locator_params(nbins=3)
+    ax.set_xlabel('x-label', fontsize=fontsize)
+    ax.set_ylabel('y-label', fontsize=fontsize)
+    ax.set_title('Title', fontsize=fontsize)
+
 
 @image_comparison(baseline_images=['tight_layout1'])
 def test_tight_layout1():
@@ -81,50 +84,54 @@ def test_tight_layout5():
     fig = plt.figure()
 
     ax = plt.subplot(111)
-    arr = np.arange(100).reshape((10,10))
+    arr = np.arange(100).reshape((10, 10))
     ax.imshow(arr, interpolation="none")
 
     plt.tight_layout()
 
 
-
 @image_comparison(baseline_images=['tight_layout6'])
 def test_tight_layout6():
     'Test tight_layout for gridspec'
 
-    fig = plt.figure()
+    # This raises warnings since tight layout cannot
+    # do this fully automatically. But the test is
+    # correct since the layout is manually edited
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore", UserWarning)
+        fig = plt.figure()
 
-    import matplotlib.gridspec as gridspec
+        import matplotlib.gridspec as gridspec
 
-    gs1 = gridspec.GridSpec(2, 1)
-    ax1 = fig.add_subplot(gs1[0])
-    ax2 = fig.add_subplot(gs1[1])
+        gs1 = gridspec.GridSpec(2, 1)
+        ax1 = fig.add_subplot(gs1[0])
+        ax2 = fig.add_subplot(gs1[1])
 
-    example_plot(ax1)
-    example_plot(ax2)
+        example_plot(ax1)
+        example_plot(ax2)
 
-    gs1.tight_layout(fig, rect=[0, 0, 0.5, 1])
+        gs1.tight_layout(fig, rect=[0, 0, 0.5, 1])
 
-    gs2 = gridspec.GridSpec(3, 1)
+        gs2 = gridspec.GridSpec(3, 1)
 
-    for ss in gs2:
-        ax = fig.add_subplot(ss)
-        example_plot(ax)
-        ax.set_title("")
-        ax.set_xlabel("")
+        for ss in gs2:
+            ax = fig.add_subplot(ss)
+            example_plot(ax)
+            ax.set_title("")
+            ax.set_xlabel("")
 
-    ax.set_xlabel("x-label", fontsize=12)
+        ax.set_xlabel("x-label", fontsize=12)
 
-    gs2.tight_layout(fig, rect=[0.5, 0, 1, 1], h_pad=0.45)
+        gs2.tight_layout(fig, rect=[0.5, 0, 1, 1], h_pad=0.45)
 
-    top = min(gs1.top, gs2.top)
-    bottom = max(gs1.bottom, gs2.bottom)
+        top = min(gs1.top, gs2.top)
+        bottom = max(gs1.bottom, gs2.bottom)
 
-    gs1.tight_layout(fig, rect=[None, 0 + (bottom-gs1.bottom),
-                                0.5, 1 - (gs1.top-top)])
-    gs2.tight_layout(fig, rect=[0.5, 0 + (bottom-gs2.bottom),
-                                None, 1 - (gs2.top-top)],
-                     h_pad=0.45)
+        gs1.tight_layout(fig, rect=[None, 0 + (bottom-gs1.bottom),
+                                    0.5, 1 - (gs1.top-top)])
+        gs2.tight_layout(fig, rect=[0.5, 0 + (bottom-gs2.bottom),
+                                    None, 1 - (gs2.top-top)],
+                         h_pad=0.45)
 
 
 @image_comparison(baseline_images=['tight_layout7'])

lib/matplotlib/tests/test_triangulation.py

@@ -9,6 +9,7 @@
 from nose.tools import assert_equal, assert_raises
 from numpy.testing import assert_array_equal, assert_array_almost_equal,\
     assert_array_less
+import numpy.ma.testutils as matest
 from matplotlib.testing.decorators import image_comparison
 import matplotlib.cm as cm
 from matplotlib.path import Path
@@ -323,7 +324,7 @@ def test_triinterp():
     xs, ys = np.meshgrid(xs, ys)
     for interp in (linear_interp, cubic_min_E, cubic_geom):
         zs = interp(xs, ys)
-        assert_array_almost_equal(zs, (1.23*xs - 4.79*ys))
+        matest.assert_array_almost_equal(zs, (1.23*xs - 4.79*ys))
         mask = (xs >= 1) * (xs <= 2) * (ys >= 1) * (ys <= 2)
         assert_array_equal(zs.mask, mask)
 
@@ -697,7 +698,8 @@ def z(x, y):
                 interp_z0[interp_key] = interp(xs0, ys0)  # storage
             else:
                 interpz = interp(xs, ys)
-                assert_array_almost_equal(interpz, interp_z0[interp_key])
+                matest.assert_array_almost_equal(interpz,
+                                                 interp_z0[interp_key])
 
     scale_factor = 987654.3210
     for scaled_axis in ('x', 'y'):
@@ -723,7 +725,7 @@ def z(x, y):
         # 1 axis...
         for interp_key in ['lin', 'min_E', 'geom']:
             interpz = dic_interp[interp_key](xs, ys)
-            assert_array_almost_equal(interpz, interp_z0[interp_key])
+            matest.assert_array_almost_equal(interpz, interp_z0[interp_key])
 
 
 @image_comparison(baseline_images=['tri_smooth_contouring'],