Slightly compress down the pgf tests.

Author: anntzer

lib/matplotlib/tests/test_backend_pgf.py

@@ -163,29 +163,20 @@ def test_rcupdate():
 @pytest.mark.style('default')
 @pytest.mark.backend('pgf')
 def test_pathclip():
-    rc_xelatex = {'font.family': 'serif',
-                  'pgf.rcfonts': False}
-    mpl.rcParams.update(rc_xelatex)
-
-    plt.figure()
+    mpl.rcParams.update({'font.family': 'serif', 'pgf.rcfonts': False})
     plt.plot([0., 1e100], [0., 1e100])
     plt.xlim(0, 1)
     plt.ylim(0, 1)
-    # this test passes if compiling/saving to pdf works (no image comparison)
-    plt.savefig(os.path.join(result_dir, "pgf_pathclip.pdf"))
+    plt.savefig(BytesIO(), format="pdf")  # No image comparison.
 
 
 # test mixed mode rendering
 @needs_xelatex
 @pytest.mark.backend('pgf')
 @image_comparison(['pgf_mixedmode.pdf'], style='default')
 def test_mixedmode():
-    rc_xelatex = {'font.family': 'serif',
-                  'pgf.rcfonts': False}
-    mpl.rcParams.update(rc_xelatex)
-
+    mpl.rcParams.update({'font.family': 'serif', 'pgf.rcfonts': False})
     Y, X = np.ogrid[-1:1:40j, -1:1:40j]
-    plt.figure()
     plt.pcolor(X**2 + Y**2).set_rasterized(True)
 
 
@@ -194,15 +185,11 @@ def test_mixedmode():
 @pytest.mark.style('default')
 @pytest.mark.backend('pgf')
 def test_bbox_inches():
-    rc_xelatex = {'font.family': 'serif',
-                  'pgf.rcfonts': False}
-    mpl.rcParams.update(rc_xelatex)
-
+    mpl.rcParams.update({'font.family': 'serif', 'pgf.rcfonts': False})
     fig, (ax1, ax2) = plt.subplots(1, 2)
     ax1.plot(range(5))
     ax2.plot(range(5))
     plt.tight_layout()
-
     bbox = ax1.get_window_extent().transformed(fig.dpi_scale_trans.inverted())
     compare_figure('pgf_bbox_inches.pdf', savefig_kwargs={'bbox_inches': bbox},
                    tol=0)