reftests: Add a test comparing inherit and initial

One test has all properties set to 'inherit', the other to 'initial'.
This should result in the same result, as inherit will ensure every
widget inherits the same value, and for the toplevel 'inherit' is
defined as being identical to 'initial'.

tests/reftests/Makefile.am

@@ -130,6 +130,9 @@ EXTRA_DIST += \
 	grid-spacing3.css \
 	grid-spacing3.ref.ui \
 	grid-spacing3.ui \
+	inherit-and-initial.css \
+	inherit-and-initial.ref.ui \
+	inherit-and-initial.ui \
 	label-attribute-preference.css \
 	label-attribute-preference.ref.ui \
 	label-attribute-preference.ui \

tests/reftests/inherit-and-initial.css

@@ -0,0 +1,85 @@
+* {
+  background-clip: initial;
+  background-color: initial;
+  background-image: initial;
+  background-origin: initial;
+  background-repeat: initial;
+  border-bottom-color: initial;
+  border-bottom-left-radius: initial;
+  border-bottom-right-radius: initial;
+  border-bottom-width: initial;
+  border-image-repeat: initial;
+  border-image-slice: initial;
+  border-image-source: initial;
+  border-image-width: initial;
+  border-left-color: initial;
+  border-left-width: initial;
+  border-right-color: initial;
+  border-right-width: initial;
+  border-style: initial;
+  border-top-color: initial;
+  border-top-left-radius: initial;
+  border-top-right-radius: initial;
+  border-top-width: initial;
+  box-shadow: initial;
+  color: initial;
+  engine: initial;
+  font-family: initial;
+  font-size: initial;
+  font-style: initial;
+  font-variant: initial;
+  font-weight: initial;
+  icon-shadow: initial;
+  margin-bottom: initial;
+  margin-left: initial;
+  margin-right: initial;
+  margin-top: initial;
+  padding-bottom: initial;
+  padding-left: initial;
+  padding-right: initial;
+  padding-top: initial;
+  text-shadow: initial;
+}
+
+#inherit {
+  background-clip: inherit;
+  background-color: inherit;
+  background-image: inherit;
+  background-origin: inherit;
+  background-repeat: inherit;
+  border-bottom-color: inherit;
+  border-bottom-left-radius: inherit;
+  border-bottom-right-radius: inherit;
+  border-bottom-width: inherit;
+  border-image-repeat: inherit;
+  border-image-slice: inherit;
+  border-image-source: inherit;
+  border-image-width: inherit;
+  border-left-color: inherit;
+  border-left-width: inherit;
+  border-right-color: inherit;
+  border-right-width: inherit;
+  border-style: inherit;
+  border-top-color: inherit;
+  border-top-left-radius: inherit;
+  border-top-right-radius: inherit;
+  border-top-width: inherit;
+  box-shadow: inherit;
+  color: inherit;
+  engine: inherit;
+  font-family: inherit;
+  font-size: inherit;
+  font-style: inherit;
+  font-variant: inherit;
+  font-weight: inherit;
+  icon-shadow: inherit;
+  margin-bottom: inherit;
+  margin-left: inherit;
+  margin-right: inherit;
+  margin-top: inherit;
+  padding-bottom: inherit;
+  padding-left: inherit;
+  padding-right: inherit;
+  padding-top: inherit;
+  text-shadow: inherit;
+}