diff options
Diffstat (limited to 'spec/javascripts/lib/utils/ajax_cache_spec.js')
-rw-r--r-- | spec/javascripts/lib/utils/ajax_cache_spec.js | 57 |
1 files changed, 43 insertions, 14 deletions
diff --git a/spec/javascripts/lib/utils/ajax_cache_spec.js b/spec/javascripts/lib/utils/ajax_cache_spec.js index 7b466a11b92..e1747a82329 100644 --- a/spec/javascripts/lib/utils/ajax_cache_spec.js +++ b/spec/javascripts/lib/utils/ajax_cache_spec.js @@ -5,19 +5,13 @@ describe('AjaxCache', () => { const dummyResponse = { important: 'dummy data', }; - let ajaxSpy = (url) => { - expect(url).toBe(dummyEndpoint); - const deferred = $.Deferred(); - deferred.resolve(dummyResponse); - return deferred.promise(); - }; beforeEach(() => { AjaxCache.internalStorage = { }; - spyOn(jQuery, 'ajax').and.callFake(url => ajaxSpy(url)); + AjaxCache.pendingRequests = { }; }); - describe('#get', () => { + describe('get', () => { it('returns undefined if cache is empty', () => { const data = AjaxCache.get(dummyEndpoint); @@ -41,7 +35,7 @@ describe('AjaxCache', () => { }); }); - describe('#hasData', () => { + describe('hasData', () => { it('returns false if cache is empty', () => { expect(AjaxCache.hasData(dummyEndpoint)).toBe(false); }); @@ -59,9 +53,9 @@ describe('AjaxCache', () => { }); }); - describe('#purge', () => { + describe('remove', () => { it('does nothing if cache is empty', () => { - AjaxCache.purge(dummyEndpoint); + AjaxCache.remove(dummyEndpoint); expect(AjaxCache.internalStorage).toEqual({ }); }); @@ -69,7 +63,7 @@ describe('AjaxCache', () => { it('does nothing if cache contains no matching data', () => { AjaxCache.internalStorage['not matching'] = dummyResponse; - AjaxCache.purge(dummyEndpoint); + AjaxCache.remove(dummyEndpoint); expect(AjaxCache.internalStorage['not matching']).toBe(dummyResponse); }); @@ -77,14 +71,27 @@ describe('AjaxCache', () => { it('removes matching data', () => { AjaxCache.internalStorage[dummyEndpoint] = dummyResponse; - AjaxCache.purge(dummyEndpoint); + AjaxCache.remove(dummyEndpoint); expect(AjaxCache.internalStorage).toEqual({ }); }); }); - describe('#retrieve', () => { + describe('retrieve', () => { + let ajaxSpy; + + beforeEach(() => { + spyOn(jQuery, 'ajax').and.callFake(url => ajaxSpy(url)); + }); + it('stores and returns data from Ajax call if cache is empty', (done) => { + ajaxSpy = (url) => { + expect(url).toBe(dummyEndpoint); + const deferred = $.Deferred(); + deferred.resolve(dummyResponse); + return deferred.promise(); + }; + AjaxCache.retrieve(dummyEndpoint) .then((data) => { expect(data).toBe(dummyResponse); @@ -94,6 +101,28 @@ describe('AjaxCache', () => { .catch(fail); }); + it('makes no Ajax call if request is pending', () => { + const responseDeferred = $.Deferred(); + + ajaxSpy = (url) => { + expect(url).toBe(dummyEndpoint); + // neither reject nor resolve to keep request pending + return responseDeferred.promise(); + }; + + const unexpectedResponse = data => fail(`Did not expect response: ${data}`); + + AjaxCache.retrieve(dummyEndpoint) + .then(unexpectedResponse) + .catch(fail); + + AjaxCache.retrieve(dummyEndpoint) + .then(unexpectedResponse) + .catch(fail); + + expect($.ajax.calls.count()).toBe(1); + }); + it('returns undefined if Ajax call fails and cache is empty', (done) => { const dummyStatusText = 'exploded'; const dummyErrorMessage = 'server exploded'; |