diff --git a/services/web/app/coffee/Features/ReferencesSearch/ReferencesSearchHandler.coffee b/services/web/app/coffee/Features/ReferencesSearch/ReferencesSearchHandler.coffee
index a01b6893a2..9ae6143408 100644
--- a/services/web/app/coffee/Features/ReferencesSearch/ReferencesSearchHandler.coffee
+++ b/services/web/app/coffee/Features/ReferencesSearch/ReferencesSearchHandler.coffee
@@ -38,5 +38,5 @@ module.exports = ReferencesSearchHandler =
 				return callback(null, result)
 			else
 				err = new Error("references api responded with non-success code: #{res.statusCode}")
-				logger.log {err, project_id, file_url}, "error getting references keys"
+				logger.log {err, project_id}, "error getting references keys"
 				return callback(err)
diff --git a/services/web/test/UnitTests/coffee/ReferencesSearch/ReferencesSearchHandlerTests.coffee b/services/web/test/UnitTests/coffee/ReferencesSearch/ReferencesSearchHandlerTests.coffee
new file mode 100644
index 0000000000..e4cb1f8af9
--- /dev/null
+++ b/services/web/test/UnitTests/coffee/ReferencesSearch/ReferencesSearchHandlerTests.coffee
@@ -0,0 +1,77 @@
+SandboxedModule = require('sandboxed-module')
+should = require('chai').should()
+expect = require('chai').expect
+sinon = require 'sinon'
+assert = require("chai").assert
+modulePath = "../../../../app/js/Features/ReferencesSearch/ReferencesSearchHandler"
+
+describe 'ReferencesSearchHandler', ->
+
+	beforeEach ->
+		@project_id = '222'
+		@file_url = 'http://example.com/some/file'
+		@handler = SandboxedModule.require modulePath, requires:
+			'logger-sharelatex': {
+				log: ->
+				err: ->
+			}
+			'settings-sharelatex': @settings = {
+				apis: {references: {url: 'http://some.url'}}
+			}
+			'request': @request = {
+				get: sinon.stub()
+				post: sinon.stub()
+			}
+
+	describe 'indexFile', ->
+
+		describe 'when index operation is successful', ->
+			beforeEach ->
+				@request.post.callsArgWith(1, null, {statusCode: 201}, {})
+
+			it 'should not produce an error', (done) ->
+				@handler.indexFile @project_id, @file_url, (err) =>
+					expect(err).to.equal null
+					done()
+
+		describe 'when index operation fails', ->
+			beforeEach ->
+				@request.post.callsArgWith(1, null, {statusCode: 500}, {})
+
+			it 'should produce an error', (done) ->
+				@handler.indexFile @project_id, @file_url, (err) =>
+					expect(err).to.not.equal null
+					done()
+
+	describe 'getKeys', ->
+
+		describe 'when request is successful', ->
+			beforeEach ->
+				@data =
+					projectId: @projectId
+					keys: ['a', 'b', 'c']
+				@request.get.callsArgWith(1, null, {statusCode: 200}, @data)
+
+			it 'should not produce an error', ->
+				@handler.getKeys @project_id, (err, result) =>
+					expect(err).to.equal null
+
+			it 'should produce a result object', ->
+				@handler.getKeys @project_id, (err, result) =>
+					expect(result).to.not.equal null
+					expect(result).to.deep.equal @data
+
+		describe 'when request fails', ->
+			beforeEach ->
+				@data =
+					projectId: @project_Id
+					keys: ['a', 'b', 'c']
+				@request.get.callsArgWith(1, null, {statusCode: 500}, null)
+
+			it 'should produce an error', ->
+				@handler.getKeys @project_id, (err, result) =>
+					expect(err).to.not.equal null
+
+			it 'should not produce a result', ->
+				@handler.getKeys @project_id, (err, result) =>
+					expect(result).to.not.equal null