       targetFiles.forEach (file) ->
         promises.push q.nfcall(
           fs.readFile,
-          path.join("./tests/data/multiple", file)
+          path.join("./tests/data/multiple", file),
+          "utf-8"
         ).then(
           (data) ->
             resultPath = path.join("./tests/results/multiple", file)

            )
            promises.push q.nfcall(
              fs.readFile,
              resultPath
            ).then(
              (data) ->
                expect(

        )
        q.nfcall(
          fs.readFile,
          "./tests/data/imports/main.css.map",
          "utf-8"
        ).then(
          (data) ->
            right.map = JSON.parse data
