cover.test.js
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import { Jimp, mkJGD, hasOwnProp } from '@jimp/test-utils';
import configure from '@jimp/custom';
import crop from '@jimp/plugin-crop';
import scale from '@jimp/plugin-scale';
import resize from '@jimp/plugin-resize';
import cover from '../src';
const jimp = configure({ plugins: [resize, scale, crop, cover] }, Jimp);
describe('All align combinations for cover', () => {
const verticalJGD = mkJGD(
'▴▴▴▴▸▸▸▸',
'▴▴▴▴▸▸▸▸',
'▴▴▴▴▸▸▸▸',
'▴▴▴▴▸▸▸▸',
'▴▴▴▴▸▸▸▸',
'▴▴▴▴▸▸▸▸',
'▾▾▾▾◆◆◆◆',
'▾▾▾▾◆◆◆◆',
'▾▾▾▾◆◆◆◆',
'▾▾▾▾◆◆◆◆',
'▾▾▾▾◆◆◆◆',
'▾▾▾▾◆◆◆◆'
);
const horizontalJGD = mkJGD(
'▴▴▴▴▴▴▸▸▸▸▸▸',
'▴▴▴▴▴▴▸▸▸▸▸▸',
'▴▴▴▴▴▴▸▸▸▸▸▸',
'▴▴▴▴▴▴▸▸▸▸▸▸',
'▾▾▾▾▾▾◆◆◆◆◆◆',
'▾▾▾▾▾▾◆◆◆◆◆◆',
'▾▾▾▾▾▾◆◆◆◆◆◆',
'▾▾▾▾▾▾◆◆◆◆◆◆'
);
let vertical;
let horizontal; // stores the Jimp instances of the JGD images above.
before(done => {
const img1 = jimp.read(verticalJGD);
const img2 = jimp.read(horizontalJGD);
Promise.all([img1, img2])
.then(images => {
vertical = images[0];
horizontal = images[1];
done();
})
.catch(done);
});
const tests = {}; // Stores the expected result for each alignment combination.
tests['LEFT TOP'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▴▴▸▸', '▾▾◆◆'),
horiz: mkJGD('▴▴▴▸', '▴▴▴▸', '▾▾▾◆', '▾▾▾◆')
}
};
tests['CENTER TOP'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▴▴▸▸', '▾▾◆◆'),
horiz: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆')
}
};
tests['RIGHT TOP'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▴▴▸▸', '▾▾◆◆'),
horiz: mkJGD('▴▸▸▸', '▴▸▸▸', '▾◆◆◆', '▾◆◆◆')
}
};
tests['LEFT MIDDLE'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▴▴▸', '▴▴▴▸', '▾▾▾◆', '▾▾▾◆')
}
};
tests['CENTER MIDDLE'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆')
}
};
tests['RIGHT MIDDLE'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▸▸▸', '▴▸▸▸', '▾◆◆◆', '▾◆◆◆')
}
};
tests['LEFT BOTTOM'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▾▾◆◆', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▴▴▸', '▴▴▴▸', '▾▾▾◆', '▾▾▾◆')
}
};
tests['CENTER BOTTOM'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▾▾◆◆', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▴▸▸', '▴▴▸▸', '▾▾◆◆', '▾▾◆◆')
}
};
tests['RIGHT BOTTOM'] = {
cover: {
verti: mkJGD('▴▴▸▸', '▾▾◆◆', '▾▾◆◆', '▾▾◆◆'),
horiz: mkJGD('▴▸▸▸', '▴▸▸▸', '▾◆◆◆', '▾◆◆◆')
}
};
function runAlignTest(align) {
const jgdCoverV = tests[align].cover.verti;
const jgdCoverH = tests[align].cover.horiz;
let a = align.split(' ');
a = Jimp['HORIZONTAL_ALIGN_' + a[0]] | Jimp['VERTICAL_ALIGN_' + a[1]];
it('cover aligned to ' + align, () => {
vertical
.clone()
.cover(4, 4, a)
.getJGDSync()
.should.be.sameJGD(jgdCoverV, 'Vertical image');
horizontal
.clone()
.cover(4, 4, a)
.getJGDSync()
.should.be.sameJGD(jgdCoverH, 'Horizontal image');
});
}
for (const align in tests) if (hasOwnProp(tests, align)) runAlignTest(align);
});