matplotlib · tacaswell · Feb 16, 2016 · Dec 22, 2015 · Jan 4, 2016 · Jan 16, 2016
diff --git a/.travis.yml b/.travis.yml
@@ -13,10 +13,14 @@ addons:
      - gdb
      - mencoder
      - dvipng
+      - pgf
+      - lmodern
+      - cm-super
      - texlive-latex-base
      - texlive-latex-extra
      - texlive-fonts-recommended
      - texlive-latex-recommended
+      - texlive-xetex
      - graphviz
 #     - fonts-humor-sans
 #    sources:

diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_bbox_inches.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_bbox_inches.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_mixedmode.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_mixedmode.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_pdflatex.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_pdflatex.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_rcupdate1.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_rcupdate1.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_rcupdate2.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_rcupdate2.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_xelatex.pdf b/lib/matplotlib/tests/baseline_images/test_backend_pgf/pgf_xelatex.pdf
diff --git a/lib/matplotlib/tests/test_backend_pgf.py b/lib/matplotlib/tests/test_backend_pgf.py
@@ -31,7 +31,7 @@ def check_for(texsystem):
    \\@@end
    """
    try:
-        latex = subprocess.Popen(["xelatex", "-halt-on-error"],
+        latex = subprocess.Popen([texsystem, "-halt-on-error"],
                                 stdin=subprocess.PIPE,
                                 stdout=subprocess.PIPE)
        stdout, stderr = latex.communicate(header.encode("utf8"))
@@ -41,16 +41,15 @@ def check_for(texsystem):
    return latex.returncode == 0


-def compare_figure(fname, savefig_kwargs={}):
+def compare_figure(fname, savefig_kwargs={}, tol=0):
    actual = os.path.join(result_dir, fname)
    plt.savefig(actual, **savefig_kwargs)

    expected = os.path.join(result_dir, "expected_%s" % fname)
    shutil.copyfile(os.path.join(baseline_dir, fname), expected)
-    err = compare_images(expected, actual, tol=14)
+    err = compare_images(expected, actual, tol=tol)
    if err:
-        raise ImageComparisonFailure('images not close: %s vs. '
-                                     '%s' % (actual, expected))
+        raise ImageComparisonFailure(err)


 def create_figure():
@@ -89,7 +88,7 @@ def test_xelatex():
                  'pgf.rcfonts': False}
    mpl.rcParams.update(rc_xelatex)
    create_figure()
-    compare_figure('pgf_xelatex.pdf')
+    compare_figure('pgf_xelatex.pdf', tol=0)


 # test compiling a figure to pdf with pdflatex
@@ -105,7 +104,7 @@ def test_pdflatex():
                                    '\\usepackage[T1]{fontenc}']}
    mpl.rcParams.update(rc_pdflatex)
    create_figure()
-    compare_figure('pgf_pdflatex.pdf')
+    compare_figure('pgf_pdflatex.pdf', tol=0)


 # test updating the rc parameters for each figure
@@ -130,11 +129,11 @@ def test_rcupdate():
                    'pgf.preamble': ['\\usepackage[utf8x]{inputenc}',
                                     '\\usepackage[T1]{fontenc}',
                                     '\\usepackage{sfmath}']})
-
+    tol = (4, 0)
    for i, rc_set in enumerate(rc_sets):
        mpl.rcParams.update(rc_set)
        create_figure()
-        compare_figure('pgf_rcupdate%d.pdf' % (i + 1))
+        compare_figure('pgf_rcupdate%d.pdf' % (i + 1), tol=tol[i])


 # test backend-side clipping, since large numbers are not supported by TeX
@@ -168,7 +167,7 @@ def test_mixedmode():
    Y, X = np.ogrid[-1:1:40j, -1:1:40j]
    plt.figure()
    plt.pcolor(X**2 + Y**2).set_rasterized(True)
-    compare_figure('pgf_mixedmode.pdf')
+    compare_figure('pgf_mixedmode.pdf', tol=0)


 # test bbox_inches clipping
@@ -190,7 +189,8 @@ def test_bbox_inches():
    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})
+    compare_figure('pgf_bbox_inches.pdf', savefig_kwargs={'bbox_inches': bbox},
+                   tol=0)


 if __name__ == '__main__':