Automatically clear CLSI cache when compile fails

services/web/test/UnitTests/coffee/Compile/ClsiManagerTests.coffee

@@ -72,6 +72,19 @@ describe "ClsiManager", ->
 			it "should call the callback with a failure statue", ->
 				@callback.calledWith(null, @status).should.equal true
 
+	describe "deleteAuxFiles", ->
+		beforeEach ->
+			@request.del = sinon.stub().callsArg(1)
+			@ClsiManager.deleteAuxFiles @project_id, @callback
+
+		it "should call the delete method in the CLSI", ->
+			@request.del
+				.calledWith("#{@settings.apis.clsi.url}/project/#{@project_id}")
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
 	describe "_buildRequest", ->
 		beforeEach ->
 			@project =

services/web/test/UnitTests/coffee/Compile/CompileControllerTests.coffee

@@ -21,6 +21,7 @@ describe "CompileController", ->
 			"logger-sharelatex": @logger = { log: sinon.stub(), error: sinon.stub() }
 			"../../infrastructure/Metrics": @Metrics =  { inc: sinon.stub() }
 			"./CompileManager":@CompileManager
+			"./ClsiManager": @ClsiManager
 			"../Authentication/AuthenticationController": @AuthenticationController = {}
 		@project_id = "project-id"
 		@next = sinon.stub()
@@ -144,14 +145,20 @@ describe "CompileController", ->
 
 	describe "deleteAuxFiles", ->
 		beforeEach ->
-			@CompileController.proxyToClsi = sinon.stub()
+			@ClsiManager.deleteAuxFiles = sinon.stub().callsArg(1)
 			@req.params =
 				Project_id: @project_id
+			@res.send = sinon.stub()
 			@CompileController.deleteAuxFiles @req, @res, @next
 
 		it "should proxy to the CLSI", ->
-			@CompileController.proxyToClsi
-				.calledWith("/project/#{@project_id}", @req, @res, @next)
+			@ClsiManager.deleteAuxFiles
+				.calledWith(@project_id)
+				.should.equal true
+
+		it "should return a 200", ->
+			@res.send
+				.calledWith(200)
 				.should.equal true
 
 	describe "compileAndDownloadPdf", ->

services/web/test/UnitTests/coffee/Compile/CompileManagerTests.coffee

@@ -75,6 +75,23 @@ describe "CompileManager", ->
 				@logger.log
 					.calledWith(project_id: @project_id, user_id: @user_id, "compiling project")
 					.should.equal true
+
+		describe "when the compile fails", ->
+			beforeEach ->
+				@CompileManager._checkIfAutoCompileLimitHasBeenHit = (_, cb)-> cb(null, true)
+				@ClsiManager.deleteAuxFiles = sinon.stub()
+				@ClsiManager.sendRequest = sinon.stub().callsArgWith(1, null, @status = "failure")
+				@CompileManager.compile @project_id, @user_id, {}, @callback
+
+			it "should call the callback", ->
+				@callback
+					.calledWith(null, @status)
+					.should.equal true
+
+			it "should clear the CLSI cache", ->
+				@ClsiManager.deleteAuxFiles
+					.calledWith(@project_id)
+					.should.equal true
 				
 		describe "when the project has been recently compiled", ->
 			beforeEach ->