Add in a synctex end point

test/acceptance/coffee/SynctexTests.coffee

@@ -0,0 +1,38 @@
+Client = require "./helpers/Client"
+request = require "request"
+require("chai").should()
+expect = require("chai").expect
+
+describe "Syncing", ->
+	before (done) ->
+		@request =
+			resources: [
+				path: "main.tex"
+				content: '''
+					\\documentclass{article}
+					\\begin{document}
+					Hello world
+					\\end{document}
+				'''
+			]
+		@project_id = Client.randomId()
+		Client.compile @project_id, @request, (@error, @res, @body) => done()
+
+	describe "from code to pdf", ->
+		it "should return the correct location", (done) ->
+			Client.syncFromCode @project_id, "main.tex", 3, 5, (error, pdfPositions) ->
+				throw error if error?
+				expect(pdfPositions).to.deep.equal(
+					pdf: [ { page: 1, h: 133.77, v: 134.76, height: 6.92, width: 343.71 } ]
+				)
+				done()
+
+	describe "from pdf to code", ->
+		it "should return the correct location", (done) ->
+			Client.syncFromPdf @project_id, 1, 100, 200, (error, codePositions) ->
+				throw error if error?
+				expect(codePositions).to.deep.equal(
+					code: [ { file: 'main.tex', line: 3, column: -1 } ]
+				)
+				done()
+

test/acceptance/coffee/helpers/Client.coffee

@@ -32,6 +32,29 @@ module.exports = Client =
 		app.use express.static(directory)
 		app.listen(port, host)
 
+	syncFromCode: (project_id, file, line, column, callback = (error, pdfPositions) ->) ->
+		request.get {
+			url: "#{@host}/project/#{project_id}/sync/code"
+			qs: {
+				file: file
+				line: line
+				column: column
+			}
+		}, (error, response, body) ->
+			return callback(error) if error?
+			callback null, JSON.parse(body)
+
+	syncFromPdf: (project_id, page, h, v, callback = (error, pdfPositions) ->) ->
+		request.get {
+			url: "#{@host}/project/#{project_id}/sync/pdf"
+			qs: {
+				page: page,
+				h: h, v: v
+			}
+		}, (error, response, body) ->
+			return callback(error) if error?
+			callback null, JSON.parse(body)
+
 	compileDirectory: (project_id, baseDirectory, directory, serverPort, callback = (error, res, body) ->) ->
 		resources = []
 		entities = fs.readdirSync("#{baseDirectory}/#{directory}")

test/unit/coffee/CompileControllerTests.coffee

@@ -18,6 +18,7 @@ describe "CompileController", ->
 		@Settings.externalUrl = "http://www.example.com"
 		@req = {}
 		@res = {}
+		@next = sinon.stub()
 
 	describe "compile", ->
 		beforeEach ->
@@ -90,3 +91,61 @@ describe "CompileController", ->
 					)
 					.should.equal true
 
+	describe "syncFromCode", ->
+		beforeEach ->
+			@file = "main.tex"
+			@line = 42
+			@column = 5
+			@project_id = "mock-project-id"
+			@req.params =
+				project_id: @project_id
+			@req.query =
+				file: @file
+				line: @line.toString()
+				column: @column.toString()
+			@res.send = sinon.stub()
+
+			@CompileManager.syncFromCode = sinon.stub().callsArgWith(4, null, @pdfPositions = ["mock-positions"])
+			@CompileController.syncFromCode @req, @res, @next
+
+		it "should find the corresponding location in the PDF", ->
+			@CompileManager.syncFromCode
+				.calledWith(@project_id, @file, @line, @column)
+				.should.equal true
+
+		it "should return the positions", ->
+			@res.send
+				.calledWith(JSON.stringify
+					pdf: @pdfPositions
+				)
+				.should.equal true
+
+	describe "syncFromPdf", ->
+		beforeEach ->
+			@page = 5
+			@h = 100.23
+			@v = 45.67
+			@project_id = "mock-project-id"
+			@req.params =
+				project_id: @project_id
+			@req.query =
+				page: @page.toString()
+				h: @h.toString()
+				v: @v.toString()
+			@res.send = sinon.stub()
+
+			@CompileManager.syncFromPdf = sinon.stub().callsArgWith(4, null, @codePositions = ["mock-positions"])
+			@CompileController.syncFromPdf @req, @res, @next
+
+		it "should find the corresponding location in the code", ->
+			@CompileManager.syncFromPdf
+				.calledWith(@project_id, @page, @h, @v)
+				.should.equal true
+
+		it "should return the positions", ->
+			@res.send
+				.calledWith(JSON.stringify
+					code: @codePositions
+				)
+				.should.equal true
+

test/unit/coffee/CompileManagerTests.coffee

@@ -4,6 +4,7 @@ require('chai').should()
 modulePath = require('path').join __dirname, '../../../app/js/CompileManager'
 tk = require("timekeeper")
 EventEmitter = require("events").EventEmitter
+Path = require "path"
 
 describe "CompileManager", ->
 	beforeEach ->
@@ -102,3 +103,68 @@ describe "CompileManager", ->
 					.should.equal true
 
 				@callback.args[0][0].message.should.equal "rm -r #{@Settings.path.compilesDir}/#{@project_id} failed: #{@error}"
+
+	describe "syncing", ->
+		beforeEach ->
+			@page = 1
+			@h = 42.23
+			@v = 87.56
+			@width = 100.01
+			@height = 234.56
+			@line = 5
+			@column = 3
+			@file_name = "main.tex"
+			@proc = new EventEmitter()
+			@proc.stdout = new EventEmitter()
+			@proc.stderr = new EventEmitter()
+			@child_process.spawn = sinon.stub().returns(@proc)
+			@Settings.path.synctexBaseDir = (project_id) => "#{@Settings.path.compilesDir}/#{@project_id}"
+
+		describe "syncFromCode", ->
+			beforeEach ->
+				@stdout = "NODE\t#{@page}\t#{@h}\t#{@v}\t#{@width}\t#{@height}\n"
+				@CompileManager.syncFromCode @project_id, @file_name, @line, @column, @callback
+				@proc.stdout.emit "data", @stdout
+				@proc.emit "close", 0
+
+			it "should execute the synctex binary", ->
+				bin_path = Path.resolve(__dirname + "/../../../bin/synctex")
+				synctex_path = "#{@Settings.path.compilesDir}/#{@project_id}/output.pdf"
+				file_path = "#{@Settings.path.compilesDir}/#{@project_id}/#{@file_name}"
+				@child_process.spawn
+					.calledWith(bin_path, ["code", synctex_path, file_path, @line, @column])
+					.should.equal true
+
+			it "should call the callback with the parsed output", ->
+				@callback
+					.calledWith(null, [{
+						page: @page
+						h: @h
+						v: @v
+						height: @height
+						width: @width
+					}])
+					.should.equal true
+
+		describe "syncFromPdf", ->
+			beforeEach ->
+				@stdout = "NODE\t#{@Settings.path.compilesDir}/#{@project_id}/#{@file_name}\t#{@line}\t#{@column}\n"
+				@CompileManager.syncFromPdf @project_id, @page, @h, @v, @callback
+				@proc.stdout.emit "data", @stdout
+				@proc.emit "close", 0
+
+			it "should execute the synctex binary", ->
+				bin_path = Path.resolve(__dirname + "/../../../bin/synctex")
+				synctex_path = "#{@Settings.path.compilesDir}/#{@project_id}/output.pdf"
+				@child_process.spawn
+					.calledWith(bin_path, ["pdf", synctex_path, @page, @h, @v])
+					.should.equal true
+
+			it "should call the callback with the parsed output", ->
+				@callback
+					.calledWith(null, [{
+						file: @file_name
+						line: @line
+						column: @column
+					}])
+					.should.equal true