Add timelion tests

package.json

@@ -164,6 +164,7 @@
     "angular-mocks": "1.4.7",
     "auto-release-sinon": "1.0.3",
     "babel-eslint": "4.1.8",
+    "chai": "3.5.0",
     "chokidar": "1.4.3",
     "chromedriver": "2.22.1",
     "elasticdump": "2.1.1",
@@ -203,6 +204,7 @@
     "nock": "2.10.0",
     "npm": "2.15.8",
     "portscanner": "1.0.0",
+    "proxyquire": "1.7.10",
     "simple-git": "1.37.0",
     "sinon": "1.17.2",
     "source-map": "0.4.4",

src/core_plugins/timelion/server/series_functions/__tests__/static.js

@@ -8,7 +8,7 @@ const invoke = require('./helpers/invoke_series_fn.js');
 describe(filename, () => {
   it('returns a series in which all numbers are the same', () => {
     return invoke(fn, [5]).then((r) => {
-      expect(_.map(r.output.list[0].data, 1)).to.eql([5, 5, 5, 5]);
+      expect(_.unique(_.map(r.output.list[0].data, 1))).to.eql([5]);
     });
   });