Set the topic as the return of #toString() in tests.

[ci skip]

test/tostring.coffee

@@ -5,33 +5,33 @@ should = require("chai").should()
 vows.describe("Converting parsed messages to strings").addBatch(
   "#toString() on parsed message":
     "with command only":
-      topic: Message "FOO"
+      topic: (Message "FOO").toString()
       "should return 'FOO'": (topic) ->
-        topic.toString().should.equal "FOO"
+        topic.should.equal "FOO"
 
     "with prefix, command":
-      topic: Message ":test FOO"
+      topic: (Message ":test FOO").toString()
       "should return ':test FOO'": (topic) ->
-        topic.toString().should.equal ":test FOO"
+        topic.should.equal ":test FOO"
 
     "with prefix, command, middle, trailing parameter":
-      topic: Message ":test!me@test.ing PRIVMSG #Test :This is a test"
+      topic: (Message ":test!me@test.ing PRIVMSG #Test :This is a test").toString()
       "should return ':test!me@test.ing PRIVMSG #Test :This is a test'": (topic) ->
-        topic.toString().should.equal ":test!me@test.ing PRIVMSG #Test :This is a test"
+        topic.should.equal ":test!me@test.ing PRIVMSG #Test :This is a test"
 
     "with no prefix, command, middle, trailing with spaces":
-      topic: Message "PRIVMSG #foo :This is a test"
+      topic: (Message "PRIVMSG #foo :This is a test").toString()
       "should return 'PRIVMSG #foo :This is a test'": (topic) ->
-        topic.toString().should.equal "PRIVMSG #foo :This is a test"
+        topic.should.equal "PRIVMSG #foo :This is a test"
 
     "with multiple middle params, prefix":
-      topic: Message ":test FOO bar baz quux"
+      topic: (Message ":test FOO bar baz quux").toString()
       "should return ':test FOO bar baz quux'": (topic) ->
-        topic.toString().should.equal ":test FOO bar baz quux"
+        topic.should.equal ":test FOO bar baz quux"
 
     "with tags, prefix, command, middle params, trailing params":
-      topic: Message "@test=super;single :test!me@test.ing FOO bar baz quux :This is a test"
+      topic: (Message "@test=super;single :test!me@test.ing FOO bar baz quux :This is a test").toString()
       "should return '@test=super;single :test!me@test.ing FOO bar baz quux :This is a test'": (topic) ->
-        topic.toString().should.equal "@test=super;single :test!me@test.ing FOO bar baz quux :This is a test"    
+        topic.should.equal "@test=super;single :test!me@test.ing FOO bar baz quux :This is a test"    
 
 ).export(module)