test case for #486

Author: Cerdic

tests/inputs/interpolation.scss

@@ -132,4 +132,11 @@ div {
 
 .pagination {
   @include pagination-mixin(5px);
+}
+
+@mixin set-border($width) {
+    border: $width solid #000;
+}
+.element {
+    @include set-border(#{2px}); // compiles to "2px solid #000"
 }

tests/outputs/interpolation.css

@@ -74,3 +74,6 @@ a.badge {
 
 .pagination .page-item:first-child .page-link {
   border-radius: 5px; }
+
+.element {
+  border: 2px solid #000; }

tests/outputs_numbered/interpolation.css

@@ -93,3 +93,6 @@ a.badge {
 /* line 126, inputs/interpolation.scss */
   .pagination .page-item:first-child .page-link {
     border-radius: 5px; }
+/* line 140, inputs/interpolation.scss */
+.element {
+  border: 2px solid #000; }