tests: allow tests to run without a qt backend

tests/conftest.py

@@ -68,7 +68,7 @@ def qt_app():
     """
     try:
         from enaml.qt.qt_application import QtApplication
-    except ImportError:
+    except Exception:
         pytest.skip('No Qt binding found: %s' % format_exc())
 
     app = QtApplication.instance()

tests/core/test_fonts.py

@@ -10,7 +10,6 @@
 
 from enaml.fonts import (coerce_font, Font, _SIZES, _UNITS, _WEIGHTS, _STYLES,
                          _VARIANTS, _STRETCH)
-from enaml.qt.q_resource_helpers import get_cached_qfont
 
 # The order defining a CSS3 string is:
 # style variant weight stretch size line-height family.
@@ -50,5 +49,10 @@ def test_font_coercion(family, size, weight, style, variant, stretch):
     assert font.stretch == _STRETCH[stretch or 'normal']
 
     assert font._tkdata is None
+
+    try:
+        from enaml.qt.q_resource_helpers import get_cached_qfont
+    except Exception:
+        return
     get_cached_qfont(font)
     assert font._tkdata is not None

tests/test_color.py

@@ -8,7 +8,6 @@
 import pickle
 
 from enaml.colors import Color
-from enaml.qt.q_resource_helpers import get_cached_qcolor
 
 
 def test_color_initialization():
@@ -25,6 +24,11 @@ def test_color_initialization():
         assert getattr(c, name) == 0
 
     assert c._tkdata is None
+
+    try:
+        from enaml.qt.q_resource_helpers import get_cached_qcolor
+    except Exception:
+        return
     get_cached_qcolor(c)
     assert c._tkdata is not None
 

tests/test_examples.py

@@ -60,7 +60,7 @@
 try:
     from enaml.qt import QtWebEngineWidgets
     WEBVIEW_AVAILABLE = True
-except ImportError:
+except Exception:
     WEBVIEW_AVAILABLE = False
 
 

tests/utils.py

@@ -326,8 +326,8 @@ def answer_question(app, dial):
 
 @contextmanager
 def cd(path, add_to_sys_path=False):
-    """ cd to the directory then return to the cwd 
-    
+    """ cd to the directory then return to the cwd
+
     """
     cwd = os.getcwd()
     if add_to_sys_path:
@@ -343,33 +343,33 @@ def cd(path, add_to_sys_path=False):
 
 
 @pytest.fixture
-def enaml_run(qtbot, monkeypatch):
-    """ Patches the QtApplication to allow using the qtbot when the 
+def enaml_run(enaml_qtbot, monkeypatch):
+    """ Patches the QtApplication to allow using the qtbot when the
     enaml application is started. It also patches QApplication.exit as
     recommended in the pytest-qt docs.
-    
+
     Yields
     -------
-    handler: object 
-        an object with a `run` attribute that can be set to a callback that 
+    handler: object
+        an object with a `run` attribute that can be set to a callback that
         will be invoked with the application and first window shown.
-    
+
     References
     ----------
     1. https://pytest-qt.readthedocs.io/en/latest/app_exit.html
-    
+
     """
     from enaml.qt.qt_application import QtApplication, QApplication
-    
+
     app = Application.instance()
     if app:
         Application._instance = None
-    
+
     class Runner:
         # Set this to a callback
         run = None
     runner = Runner()
-    
+
     def start(self):
         for window in Window.windows:
             wait_for_window_displayed(qtbot, window)