add unit test

app/coffee/CompileManager.coffee

@@ -144,14 +144,12 @@ module.exports = CompileManager =
 	wordcount: (project_id, file_name, callback = (error, pdfPositions) ->) ->
 		base_dir = Settings.path.synctexBaseDir(project_id)
 		file_path = base_dir + "/" + file_name
-		logger.log project_id: project_id, file_name: file_name, "try wordcount"
 		CompileManager._runWordcount [file_path], (error, stdout) ->
 			return callback(error) if error?
 			logger.log project_id: project_id, file_name: file_name, stdout: stdout, "wordcount output"
 			callback null, CompileManager._parseWordcountFromOutput(stdout)
 
 	_runWordcount: (args, callback = (error, stdout) ->) ->
-		bin_path = Path.resolve("texcount")
 		seconds = 1000
 		child_process.execFile "texcount", args, timeout: 10 * seconds, (error, stdout, stderr) ->
 			return callback(error) if error?

test/unit/coffee/CompileControllerTests.coffee

@@ -189,3 +189,27 @@ describe "CompileController", ->
 				)
 				.should.equal true
 
+	describe "wordcount", ->
+		beforeEach ->
+			@file = "main.tex"
+			@project_id = "mock-project-id"
+			@req.params =
+				project_id: @project_id
+			@req.query =
+				file: @file
+			@res.send = sinon.stub()
+
+			@CompileManager.wordcount = sinon.stub().callsArgWith(2, null, @texcount = ["mock-texcount"])
+			@CompileController.wordcount @req, @res, @next
+
+		it "should return the word count of a file", ->
+			@CompileManager.wordcount
+				.calledWith(@project_id, @file)
+				.should.equal true
+
+		it "should return the texcount info", ->
+			@res.send
+				.calledWith(JSON.stringify
+					texcount: @texcount
+				)
+				.should.equal true

test/unit/coffee/CompileManagerTests.coffee

@@ -172,3 +172,32 @@ describe "CompileManager", ->
 						column: @column
 					}])
 					.should.equal true
+
+	describe "wordcount", ->
+		beforeEach ->
+			@file_name = "main.tex"
+			@child_process.execFile = sinon.stub()
+			@child_process.execFile.callsArgWith(3, null, @stdout = "Encoding: ascii\nWords in text: 2", "")
+			@Settings.path.synctexBaseDir = (project_id) => "#{@Settings.path.compilesDir}/#{@project_id}"
+			@CompileManager.wordcount @project_id, @file_name, @callback
+
+		it "should execute the texcount binary", ->
+			file_path = "#{@Settings.path.compilesDir}/#{@project_id}/#{@file_name}"
+			@child_process.execFile
+				.calledWith("texcount", [file_path], timeout: 10000)
+				.should.equal true
+
+		it "should call the callback with the parsed output", ->
+			@callback
+				.calledWith(null, {
+					encode: "ascii"
+					textWords: 2
+					headWords: 0
+					outside: 0
+					headers: 0
+					elements: 0
+					mathInline: 0
+					mathDisplay: 0
+				})
+				.should.equal true
+