Refactor illegal delimiters specs

spec/ex-commands-spec.coffee

@@ -449,19 +449,19 @@ describe "the commands", ->
       submitNormalModeInputText(':%substitute/abc/ghi/ig')
       expect(editor.getText()).toEqual('ghiaghi\ndefdDEF\nghiaghi')
 
-    it "can't be delimited by letters", ->
+    describe "illegal delimiters", ->
+      test = (delim) ->
         keydown(':')
-      submitNormalModeInputText(':substitute nanxngi')
+        submitNormalModeInputText(":substitute #{delim}a#{delim}x#{delim}gi")
         expect(atom.notifications.notifications[0].message).toEqual(
           "Command error: Regular expressions can't be delimited by alphanumeric characters, '\\', '\"' or '|'")
         expect(editor.getText()).toEqual('abcaABC\ndefdDEF\nabcaABC')
 
-    it "can't be delimited by numbers", ->
+      it "can't be delimited by letters", -> test 'n'
-      keydown(':')
+      it "can't be delimited by numbers", -> test '3'
-      submitNormalModeInputText(':substitute 1a1x1gi')
+      it "can't be delimited by '\\'",    -> test '\\'
-      expect(atom.notifications.notifications[0].message).toEqual(
+      it "can't be delimited by '\"'",    -> test '"'
-        "Command error: Regular expressions can't be delimited by alphanumeric characters, '\\', '\"' or '|'")
+      it "can't be delimited by '|'",     -> test '|'
-      expect(editor.getText()).toEqual('abcaABC\ndefdDEF\nabcaABC')
 
     describe "capturing groups", ->
       beforeEach ->