Edit D:\AVA\AVAStandard\AVA.ResourcesPlatform.AdminUI\Tools\JavaScript-Load-Image\test\test.js

/*
 * JavaScript Load Image Test 1.12.0
 * https://github.com/blueimp/JavaScript-Load-Image
 *
 * Copyright 2011, Sebastian Tschan
 * https://blueimp.net
 *
 * Licensed under the MIT license:
 * http://www.opensource.org/licenses/MIT
 */

/*global window, describe, it, expect, Blob */

(function (expect, loadImage) {
    'use strict';

describe('Loading', function () {

it('Return the img element or FileReader object to allow aborting the image load', function () {
            var img = loadImage(blobGIF, function () {
                return;
            });
            expect(img).to.be.an(Object);
            expect(img.onload).to.be.a('function');
            expect(img.onerror).to.be.a('function');
        });

it('Load image url', function (done) {
            expect(loadImage(imageUrlGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(60);
            })).to.be.ok();
        });

it('Load image blob', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(60);
            })).to.be.ok();
        });

it('Return image loading error to callback', function (done) {
            expect(loadImage('404', function (img) {
                done();
                expect(img).to.be.a(window.Event);
                expect(img.type).to.be('error');
            })).to.be.ok();
        });

it('Keep object URL if noRevoke is true', function (done) {
            expect(loadImage(blobGIF, function (img) {
                loadImage(img.src, function (img2) {
                    done();
                    expect(img.width).to.be(img2.width);
                    expect(img.height).to.be(img2.height);
                });
            }, {noRevoke: true})).to.be.ok();
        });

it('Discard object URL if noRevoke is undefined or false', function (done) {
            expect(loadImage(blobGIF, function (img) {
                loadImage(img.src, function (img2) {
                    done();
                    if (!window.PHANTOMJS) {
                        // revokeObjectUrl doesn't seem to have an effect in PhantomJS
                        expect(img2).to.be.a(window.Event);
                        expect(img2.type).to.be('error');
                    }
                });
            })).to.be.ok();
        });

});

describe('Scaling', function () {

describe('max/min', function () {

it('Scale to maxWidth', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(40);
                    expect(img.height).to.be(30);
                }, {maxWidth: 40})).to.be.ok();
            });

it('Scale to maxHeight', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(20);
                    expect(img.height).to.be(15);
                }, {maxHeight: 15})).to.be.ok();
            });

it('Scale to minWidth', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {minWidth: 160})).to.be.ok();
            });

it('Scale to minHeight', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(320);
                    expect(img.height).to.be(240);
                }, {minHeight: 240})).to.be.ok();
            });

it('Scale to minWidth but respect maxWidth', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {minWidth: 240, maxWidth: 160})).to.be.ok();
            });

it('Scale to minHeight but respect maxHeight', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {minHeight: 180, maxHeight: 120})).to.be.ok();
            });

it('Scale to minWidth but respect maxHeight', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {minWidth: 240, maxHeight: 120})).to.be.ok();
            });

it('Scale to minHeight but respect maxWidth', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {minHeight: 180, maxWidth: 160})).to.be.ok();
            });

it('Ignore max settings if image dimensions are smaller', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(80);
                    expect(img.height).to.be(60);
                }, {maxWidth: 160, maxHeight: 120})).to.be.ok();
            });

it('Ignore min settings if image dimensions are larger', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(80);
                    expect(img.height).to.be(60);
                }, {minWidth: 40, minHeight: 30})).to.be.ok();
            });

});

describe('contain', function () {

it('Scale up to contain image in max dimensions', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {maxWidth: 160, maxHeight: 160, contain: true})).to.be.ok();
            });

it('Scale down to contain image in max dimensions', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(40);
                    expect(img.height).to.be(30);
                }, {maxWidth: 40, maxHeight: 40, contain: true})).to.be.ok();
            });

});

describe('cover', function () {

it('Scale up to cover max dimensions with image dimensions', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(160);
                    expect(img.height).to.be(120);
                }, {maxWidth: 120, maxHeight: 120, cover: true})).to.be.ok();
            });

it('Scale down to cover max dimensions with image dimensions', function (done) {
                expect(loadImage(blobGIF, function (img) {
                    done();
                    expect(img.width).to.be(40);
                    expect(img.height).to.be(30);
                }, {maxWidth: 30, maxHeight: 30, cover: true})).to.be.ok();
            });

});

describe('Cropping', function () {

it('Crop to same values for maxWidth and maxHeight', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(40);
            }, {maxWidth: 40, maxHeight: 40, crop: true})).to.be.ok();
        });

it('Crop to different values for maxWidth and maxHeight', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(60);
            }, {maxWidth: 40, maxHeight: 60, crop: true})).to.be.ok();
        });

it('Crop using the given sourceWidth and sourceHeight dimensions', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(40);
            }, {sourceWidth: 40, sourceHeight: 40, crop: true})).to.be.ok();
        });

it('Crop using the given left and top coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(20);
            }, {left: 40, top: 40, crop: true})).to.be.ok();
        });

it('Crop using the given right and bottom coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(20);
            }, {right: 40, bottom: 40, crop: true})).to.be.ok();
        });

it('Crop using the given 2:1 aspectRatio', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(40);
            }, {aspectRatio: 2})).to.be.ok();
        });

it('Crop using the given 2:3 aspectRatio', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(40);
                expect(img.height).to.be(60);
            }, {aspectRatio: 2/3})).to.be.ok();
        });

});

describe('Orientation', function () {

it('Should keep the orientation', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(60);
            }, {orientation: 1})).to.be.ok();
        });

it('Should rotate left', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(60);
                expect(img.height).to.be(80);
            }, {orientation: 8})).to.be.ok();
        });

it('Should rotate right', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(60);
                expect(img.height).to.be(80);
            }, {orientation: 6})).to.be.ok();
        });

it('Should adjust constraints to new coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(60);
                expect(img.height).to.be(80);
            }, {orientation: 6, maxWidth: 60, maxHeight: 80})).to.be.ok();
        });

it('Should adjust left and top to new coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(30);
                expect(img.height).to.be(60);
            }, {orientation: 5, left: 30, top: 20})).to.be.ok();
        });

it('Should adjust right and bottom to new coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(30);
                expect(img.height).to.be(60);
            }, {orientation: 5, right: 30, bottom: 20})).to.be.ok();
        });

it('Should adjust left and bottom to new coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(30);
                expect(img.height).to.be(60);
            }, {orientation: 7, left: 30, bottom: 20})).to.be.ok();
        });

it('Should adjust right and top to new coordinates', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(30);
                expect(img.height).to.be(60);
            }, {orientation: 7, right: 30, top: 20})).to.be.ok();
        });

it('Should ignore too small orientation value', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(60);
            }, {orientation: -1})).to.be.ok();
        });

it('Should ignore too large orientation value', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.width).to.be(80);
                expect(img.height).to.be(60);
            }, {orientation: 9})).to.be.ok();
        });

});

describe('Canvas', function () {

it('Return img element to callback if canvas is not true', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.getContext).to.not.be.ok();
                expect(img.nodeName.toLowerCase()).to.be('img');
            })).to.be.ok();
        });

it('Return canvas element to callback if canvas is true', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.getContext).to.be.ok();
                expect(img.nodeName.toLowerCase()).to.be('canvas');
            }, {canvas: true})).to.be.ok();
        });

it('Return scaled canvas element to callback', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                expect(img.getContext).to.be.ok();
                expect(img.nodeName.toLowerCase()).to.be('canvas');
                expect(img.width).to.be(40);
                expect(img.height).to.be(30);
            }, {canvas: true, maxWidth: 40})).to.be.ok();
        });

it('Accept a canvas element as parameter for loadImage.scale', function (done) {
            expect(loadImage(blobGIF, function (img) {
                done();
                img = loadImage.scale(img, {
                    maxWidth: 40
                });
                expect(img.getContext).to.be.ok();
                expect(img.nodeName.toLowerCase()).to.be('canvas');
                expect(img.width).to.be(40);
                expect(img.height).to.be(30);
            }, {canvas: true})).to.be.ok();
        });

});

describe('Metadata', function () {

it('Should parse Exif information', function (done) {
            loadImage.parseMetaData(blobJPEG, function (data) {
                done();
                expect(data.exif).to.be.ok();
                expect(data.exif.get('Orientation')).to.be(6);
            });
        });

it('Should parse the complete image head', function (done) {
            loadImage.parseMetaData(blobJPEG, function (data) {
                expect(data.imageHead).to.be.ok();
                loadImage.parseMetaData(
                    createBlob(data.imageHead, 'image/jpeg'),
                    function (data) {
                        done();
                        expect(data.exif).to.be.ok();
                        expect(data.exif.get('Orientation')).to.be(6);
                    }
                );
            });
        });

});

}(
    this.expect,
    this.loadImage
));

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