Test for hyphen/dash interchangable and number after interpolation

tests/interpolation.rs

@@ -13,3 +13,8 @@ test!(
     "a {\n  color: #{'red'};\n}\n",
     "a {\n  color: red;\n}\n"
 );
+test!(
+    number_after_interpolation,
+    "a {\n  color: a#{foo}1;\n}\n",
+    "a {\n  color: afoo1;\n}\n"
+);

tests/misc.rs

@@ -22,3 +22,8 @@ test!(
     emits_double_newline_between_unrelated_styles,
     "a {\n  color: red;\n}\n\nb {\n  color: blue;\n}\n"
 );
+test!(
+    variable_interchangable_hypen_dash,
+    "$a-b: red; $a_b: green; a {\n  color: $a-b;\n}\n",
+    "a {\n  color: green;\n}\n"
+);