stub out unwanted dependency in unit tests

services/clsi/test/unit/coffee/CompileManagerTests.coffee

@@ -18,6 +18,7 @@ describe "CompileManager", ->
 			"child_process": @child_process = {}
 			"./CommandRunner": @CommandRunner = {}
 			"./DraftModeManager": @DraftModeManager = {}
+			"./TikzManager": @TikzManager = {}
 			"fs": @fs = {}
 		@callback = sinon.stub()
 
@@ -55,6 +56,7 @@ describe "CompileManager", ->
 			@OutputFileFinder.findOutputFiles = sinon.stub().callsArgWith(2, null, @output_files)
 			@OutputCacheManager.saveOutputFiles = sinon.stub().callsArgWith(2, null, @build_files)
 			@DraftModeManager.injectDraftMode = sinon.stub().callsArg(1)
+			@TikzManager.needsOutputFile = sinon.stub().returns(false)
 		
 		describe "normally", ->
 			beforeEach ->