Adding failing test for #74

test/rendering/sharedclass.mml

@@ -0,0 +1,38 @@
+{
+  "_center": {
+    "lat": 42.79540065303713,
+    "lon": 12.963867187500002,
+    "zoom": 4
+  },
+  "_format": "png",
+  "_interactivity": false,
+  "srs": "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over",
+  "Stylesheet": [
+    "sharedclass.mss"
+  ],
+  "Layer": [
+    {
+      "id": "ab",
+      "name": "ab",
+      "srs": "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over",
+      "geometry": "polygon",
+      "Datasource": {
+        "file": "http://tilemill-data.s3.amazonaws.com/world_borders_merc.zip",
+        "type": "shape"
+      },
+      "class": "a b"
+    },
+    {
+      "Datasource": {
+        "file": "http://tilemill-data.s3.amazonaws.com/natural-earth-10m-1.3.0/urban_areas.zip",
+        "type": "shape"
+      },
+      "srs": "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over",
+      "id": "bc",
+      "name": "bc",
+      "class": "b c",
+      "geometry": "polygon"
+    }
+  ]
+}
+

test/rendering/sharedclass.mss

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+.a {
+  polygon-fill: #f00;
+}
+
+.b {
+  line-color: #0f0;
+}
+
+.c {
+  marker-fill: #00f;
+}

test/rendering/sharedclass.result

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE Map[]>
+<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
+
+
+<Style name="ab" filter-mode="first">
+  <Rule>
+    <LineSymbolizer stroke="#00ff00" />
+    <PolygonSymbolizer fill="#ff0000" />
+  </Rule>
+</Style>
+<Layer
+      name="ab"
+   srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
+    <StyleName>ab</StyleName>
+    <Datasource>
+       <Parameter name="file"><![CDATA[[absolute path]]]></Parameter>
+       <Parameter name="type"><![CDATA[shape]]></Parameter>
+    </Datasource>
+  </Layer>
+
+<Style name="bc" filter-mode="first">
+  <Rule>
+    <MarkersSymbolizer fill="#0000ff" />
+    <LineSymbolizer stroke="#00ff00" />
+  </Rule>
+</Style>
+<Layer
+      name="bc"
+   srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">
+    <StyleName>bc</StyleName>
+    <Datasource>
+       <Parameter name="file"><![CDATA[[absolute path]]]></Parameter>
+       <Parameter name="type"><![CDATA[shape]]></Parameter>
+    </Datasource>
+  </Layer>
+
+</Map>