Merge branch 'capabilities' into text-encoding

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+branch = True

src/escpos/capabilities.py

@@ -13,6 +13,9 @@ PROFILES = CAPABILITIES['profiles']
 
 
 class NotSupported(Exception):
+    """Raised if a requested feature is not suppored by the
+    printer profile.
+    """
     pass
 
 
@@ -38,7 +41,7 @@ class BaseProfile(object):
         font = {'a': 0, 'b': 1}.get(font, font)
         if not six.text_type(font) in self.fonts:
             raise NotSupported(
-                '"%s" is not a valid font in the current profile' % font)
+                '"{}" is not a valid font in the current profile'.format(font))
         return font
 
     def get_columns(self, font):

test/test_function_barcode.py

@@ -16,6 +16,8 @@ import pytest
         b'\x1ba\x01\x1dh@\x1dw\x03\x1df\x00\x1dH\x02\x1dk\x024006381333931\x00')
 ])
 def test_barcode(bctype, data, expected):
+    """should generate different barcode types correctly.
+    """
     instance = printer.Dummy()
     instance.barcode(data, bctype)
     assert instance.output == expected
@@ -26,6 +28,8 @@ def test_barcode(bctype, data, expected):
     ('CODE128', False),
 ])
 def test_lacks_support(bctype, supports_b):
+    """should raise an error if the barcode type is not supported.
+    """
     profile = Profile(features={BARCODE_B: supports_b})
     instance = printer.Dummy(profile=profile)
     with pytest.raises(BarcodeTypeError):

test/test_profile.py

@@ -8,6 +8,8 @@ def profile():
 
 
 class TestBaseProfile:
+    """Test the `BaseProfile` class.
+    """
 
     def test_get_font(self, profile):
         with pytest.raises(NotSupported):
@@ -26,6 +28,8 @@ class TestBaseProfile:
 
 
 class TestCustomProfile:
+    """Test custom profile options with the `Profile` class.
+    """
 
     def test_columns(self):
         assert Profile(columns=10).get_columns('sdfasdf') == 10