diff options
Diffstat (limited to 'browser/components/newtab/test/unit/content-src/lib/perf-service.test.js')
-rw-r--r-- | browser/components/newtab/test/unit/content-src/lib/perf-service.test.js | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/browser/components/newtab/test/unit/content-src/lib/perf-service.test.js b/browser/components/newtab/test/unit/content-src/lib/perf-service.test.js new file mode 100644 index 0000000000..9cabfb5029 --- /dev/null +++ b/browser/components/newtab/test/unit/content-src/lib/perf-service.test.js @@ -0,0 +1,89 @@ +/* globals assert, beforeEach, describe, it */ +import { _PerfService } from "content-src/lib/perf-service"; +import { FakePerformance } from "test/unit/utils.js"; + +let perfService; + +describe("_PerfService", () => { + let sandbox; + let fakePerfObj; + + beforeEach(() => { + sandbox = sinon.createSandbox(); + fakePerfObj = new FakePerformance(); + perfService = new _PerfService({ performanceObj: fakePerfObj }); + }); + + afterEach(() => { + sandbox.restore(); + }); + + describe("#absNow", () => { + it("should return a number > the time origin", () => { + const absNow = perfService.absNow(); + + assert.isAbove(absNow, perfService.timeOrigin); + }); + }); + describe("#getEntriesByName", () => { + it("should call getEntriesByName on the appropriate Window.performance", () => { + sandbox.spy(fakePerfObj, "getEntriesByName"); + + perfService.getEntriesByName("monkey", "mark"); + + assert.calledOnce(fakePerfObj.getEntriesByName); + assert.calledWithExactly(fakePerfObj.getEntriesByName, "monkey", "mark"); + }); + + it("should return entries with the given name", () => { + sandbox.spy(fakePerfObj, "getEntriesByName"); + perfService.mark("monkey"); + perfService.mark("dog"); + + let marks = perfService.getEntriesByName("monkey", "mark"); + + assert.isArray(marks); + assert.lengthOf(marks, 1); + assert.propertyVal(marks[0], "name", "monkey"); + }); + }); + + describe("#getMostRecentAbsMarkStartByName", () => { + it("should throw an error if there is no mark with the given name", () => { + function bogusGet() { + perfService.getMostRecentAbsMarkStartByName("rheeeet"); + } + + assert.throws(bogusGet, Error, /No marks with the name/); + }); + + it("should return the Number from the most recent mark with the given name + the time origin", () => { + perfService.mark("dog"); + perfService.mark("dog"); + + let absMarkStart = perfService.getMostRecentAbsMarkStartByName("dog"); + + // 2 because we want the result of the 2nd call to mark, and an instance + // of FakePerformance just returns the number of time mark has been + // called. + assert.equal(absMarkStart - perfService.timeOrigin, 2); + }); + }); + + describe("#mark", () => { + it("should call the wrapped version of mark", () => { + sandbox.spy(fakePerfObj, "mark"); + + perfService.mark("monkey"); + + assert.calledOnce(fakePerfObj.mark); + assert.calledWithExactly(fakePerfObj.mark, "monkey"); + }); + }); + + describe("#timeOrigin", () => { + it("should get the origin of the wrapped performance object", () => { + assert.equal(perfService.timeOrigin, fakePerfObj.timeOrigin); + }); + }); +}); |