9e96b04542
- this is a small part of a bit of cleanup of our test files - the goal is to make the existing tests clearer with a view to making it easier to write more tests - this makes the test structure follow the codebase structure more closely - eventually we will colocate the tests as we break the codebase down further
102 lines
3.7 KiB
JavaScript
102 lines
3.7 KiB
JavaScript
const should = require('should');
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const sinon = require('sinon');
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const Promise = require('bluebird');
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const CachedImageSizeFromUrl = require('../../../../../core/server/lib/image/cached-image-size-from-url');
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describe('lib/image: image size cache', function () {
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let sizeOfStub;
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let cachedImagedSize;
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beforeEach(function () {
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sizeOfStub = sinon.stub();
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});
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afterEach(function () {
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sinon.restore();
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});
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it('should read from cache, if dimensions for image are fetched already', function (done) {
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const url = 'http://mysite.com/content/image/mypostcoverimage.jpg';
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let cachedImagedSizeResult;
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let imageSizeSpy;
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sizeOfStub.returns(new Promise.resolve({
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width: 50,
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height: 50,
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type: 'jpg'
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}));
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const cachedImageSizeFromUrl = new CachedImageSizeFromUrl({logging: {
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error: () => {}
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}, imageSize: {
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getImageSizeFromUrl: sizeOfStub
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}});
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imageSizeSpy = sizeOfStub;
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cachedImagedSizeResult = Promise.resolve(cachedImageSizeFromUrl.getCachedImageSizeFromUrl(url));
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cachedImagedSizeResult.then(function () {
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// first call to get result from `getImageSizeFromUrl`
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cachedImagedSize = cachedImageSizeFromUrl.cache;
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should.exist(cachedImagedSize);
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cachedImagedSize.has(url).should.be.true;
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const image = cachedImagedSize.get(url);
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should.exist(image.width);
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image.width.should.be.equal(50);
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should.exist(image.height);
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image.height.should.be.equal(50);
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// second call to check if values get returned from cache
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cachedImagedSizeResult = Promise.resolve(cachedImageSizeFromUrl.getCachedImageSizeFromUrl(url));
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cachedImagedSizeResult.then(function () {
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imageSizeSpy.calledOnce.should.be.true();
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imageSizeSpy.calledTwice.should.be.false();
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cachedImagedSize = cachedImageSizeFromUrl.cache;
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should.exist(cachedImagedSize);
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cachedImagedSize.has(url).should.be.true;
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const image2 = cachedImagedSize.get(url);
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should.exist(image2.width);
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image2.width.should.be.equal(50);
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should.exist(image2.height);
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image2.height.should.be.equal(50);
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done();
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});
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}).catch(done);
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});
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it('can handle image-size errors', function (done) {
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const url = 'http://mysite.com/content/image/mypostcoverimage.jpg';
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let cachedImageSizeResult;
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sizeOfStub.returns(new Promise.reject('error'));
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const cachedImageSizeFromUrl = new CachedImageSizeFromUrl({logging: {
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error: () => {}
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}, imageSize: {
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getImageSizeFromUrl: sizeOfStub
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}});
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cachedImageSizeResult = Promise.resolve(cachedImageSizeFromUrl.getCachedImageSizeFromUrl(url));
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cachedImageSizeResult.then(function () {
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cachedImagedSize = cachedImageSizeFromUrl.cache;
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should.exist(cachedImagedSize);
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cachedImagedSize.has(url).should.be.true;
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const image = cachedImagedSize.get(url);
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should.not.exist(image.width);
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should.not.exist(image.height);
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done();
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}).catch(done);
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});
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it('should return null if url is undefined', function (done) {
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const cachedImageSizeFromUrl = new CachedImageSizeFromUrl({logging: {}, imageSize: {}});
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const url = null;
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let result;
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result = cachedImageSizeFromUrl.getCachedImageSizeFromUrl(url);
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should.not.exist(result);
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done();
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});
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});
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