264ffeceef
- we have 2 methods, one to resize a buffer and one to resize a file path - make these two things super clear!
136 lines
4.6 KiB
JavaScript
136 lines
4.6 KiB
JavaScript
// Switch these lines once there are useful utils
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const testUtils = require('./utils');
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const fs = require('fs-extra');
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const errors = require('@tryghost/errors');
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const transform = require('../');
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describe('Transform', function () {
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afterEach(function () {
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sinon.restore();
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testUtils.modules.unmockNonExistentModule();
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});
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describe('canTransformFileExtension', function () {
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it('returns false for ".gif"', function () {
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should.equal(
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transform.canTransformFileExtension('.gif'),
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false
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);
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});
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it('returns false for ".svg"', function () {
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should.equal(
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transform.canTransformFileExtension('.svg'),
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false
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);
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});
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it('returns false for ".svgz"', function () {
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should.equal(
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transform.canTransformFileExtension('.svgz'),
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false
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);
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});
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it('returns false for ".ico"', function () {
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should.equal(
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transform.canTransformFileExtension('.ico'),
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false
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);
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});
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});
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describe('cases', function () {
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let sharp, sharpInstance;
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beforeEach(function () {
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sinon.stub(fs, 'readFile').resolves('original');
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sinon.stub(fs, 'writeFile').resolves();
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sharpInstance = {
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resize: sinon.stub().returnsThis(),
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rotate: sinon.stub().returnsThis(),
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toBuffer: sinon.stub()
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};
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sharp = sinon.stub().callsFake(() => {
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return sharpInstance;
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});
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testUtils.modules.mockNonExistentModule('sharp', sharp);
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});
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it('resize image', function () {
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sharpInstance.toBuffer.resolves('manipulated');
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return transform.resizeFromPath({width: 1000})
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.then(() => {
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sharpInstance.resize.calledOnce.should.be.true();
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sharpInstance.rotate.calledOnce.should.be.true();
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fs.writeFile.calledOnce.should.be.true();
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fs.writeFile.calledWith('manipulated');
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});
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});
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it('skip resizing if image is too small', function () {
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sharpInstance.toBuffer.resolves('manipulated');
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return transform.resizeFromPath({width: 1000})
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.then(() => {
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sharpInstance.resize.calledOnce.should.be.true();
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should.deepEqual(sharpInstance.resize.args[0][2], {
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withoutEnlargement: true
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});
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fs.writeFile.calledOnce.should.be.true();
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fs.writeFile.calledWith('manipulated');
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});
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});
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it('uses original image as an output when the size (bytes) is bigger after manipulation', function () {
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sharpInstance.toBuffer.resolves('manipulated to a very very very very very very very large size');
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return transform.resizeFromPath({width: 1000})
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.then(() => {
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sharpInstance.resize.calledOnce.should.be.true();
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sharpInstance.rotate.calledOnce.should.be.true();
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sharpInstance.toBuffer.calledOnce.should.be.true();
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fs.writeFile.calledOnce.should.be.true();
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fs.writeFile.calledWith('original');
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});
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});
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it('sharp throws error during processing', function () {
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sharpInstance.toBuffer.resolves('manipulated');
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fs.writeFile.rejects(new Error('whoops'));
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return transform.resizeFromPath({width: 2000})
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.then(() => {
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'1'.should.eql(1, 'Expected to fail');
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})
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.catch((err) => {
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(err instanceof errors.InternalServerError).should.be.true;
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err.code.should.eql('IMAGE_PROCESSING');
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});
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});
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});
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describe('installation', function () {
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beforeEach(function () {
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testUtils.modules.mockNonExistentModule('sharp', new Error(), true);
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});
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it('sharp was not installed', function () {
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return transform.resizeFromPath()
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.then(() => {
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'1'.should.eql(1, 'Expected to fail');
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})
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.catch((err) => {
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(err instanceof errors.InternalServerError).should.be.true();
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err.code.should.eql('SHARP_INSTALLATION');
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});
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});
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});
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});
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