Merge branch 'master' into asalikhov/py_codestyle

scipy-notebook/test/test_matplotlib.py

@@ -8,13 +8,24 @@ import os
 LOGGER = logging.getLogger(__name__)
 
 
-def test_matplotlib(container):
-    """Test that matplotlib is able to plot a graph and write it as an image"""
-    host_data_dir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "data")
+@pytest.mark.parametrize("test_file,expected_file,description",
+                         [
+                             ("matplotlib_1.py", "test.png",
+                              "Test that matplotlib is able to plot a graph and write it as an image ..."),
+                             ("matplotlib_fonts_1.py", "test_fonts.png",
+                              "Test cm-super latex labels in matplotlib ...")
+                         ])
+def test_matplotlib(container, test_file, expected_file, description):
+    """Various tests performed on matplotlib
+
+    - Test that matplotlib is able to plot a graph and write it as an image
+    - Test matplotlib latex fonts, which depend on the cm-super package
+    """
+    host_data_dir = os.path.join(os.path.dirname(
+        os.path.realpath(__file__)), "data")
     cont_data_dir = "/home/jovyan/data"
-    test_file = "matplotlib_1.py"
     output_dir = "/tmp"
-    LOGGER.info("Test that matplotlib is able to plot a graph and write it as an image ...")
+    LOGGER.info(description)
     command = "sleep infinity"
     running_container = container.run(
         volumes={host_data_dir: {"bind": cont_data_dir, "mode": "ro"}},
@@ -27,8 +38,7 @@ def test_matplotlib(container):
     LOGGER.debug(cmd.output.decode("utf-8"))
     # Checking if the file is generated
     # https://stackoverflow.com/a/15895594/4413446
-    expected_file = f"{output_dir}/test.png"
-    command = f"test -s {expected_file}"
+    command = f"test -s {output_dir}/{expected_file}"
     cmd = running_container.exec_run(command)
     assert cmd.exit_code == 0, f"Command {command} failed"
     LOGGER.debug(cmd.output.decode("utf-8"))