var Delta = require('../../lib/delta');
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describe('compose()', function () {
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it('insert + insert', function () {
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var a = new Delta().insert('A');
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var b = new Delta().insert('B');
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var expected = new Delta().insert('B').insert('A');
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expect(a.compose(b)).toEqual(expected);
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});
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it('insert + retain', function () {
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var a = new Delta().insert('A');
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var b = new Delta().retain(1, { bold: true, color: 'red', font: null });
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var expected = new Delta().insert('A', { bold: true, color: 'red' });
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expect(a.compose(b)).toEqual(expected);
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});
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it('insert + delete', function () {
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var a = new Delta().insert('A');
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var b = new Delta().delete(1);
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var expected = new Delta();
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expect(a.compose(b)).toEqual(expected);
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});
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it('delete + insert', function () {
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var a = new Delta().delete(1);
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var b = new Delta().insert('B');
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var expected = new Delta().insert('B').delete(1);
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expect(a.compose(b)).toEqual(expected);
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});
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it('delete + retain', function () {
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var a = new Delta().delete(1);
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var b = new Delta().retain(1, { bold: true, color: 'red' });
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var expected = new Delta().delete(1).retain(1, { bold: true, color: 'red' });
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expect(a.compose(b)).toEqual(expected);
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});
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it('delete + delete', function () {
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var a = new Delta().delete(1);
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var b = new Delta().delete(1);
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var expected = new Delta().delete(2);
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain + insert', function () {
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var a = new Delta().retain(1, { color: 'blue' });
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var b = new Delta().insert('B');
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var expected = new Delta().insert('B').retain(1, { color: 'blue' });
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain + retain', function () {
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var a = new Delta().retain(1, { color: 'blue' });
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var b = new Delta().retain(1, { bold: true, color: 'red', font: null });
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var expected = new Delta().retain(1, { bold: true, color: 'red', font: null });
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain + delete', function () {
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var a = new Delta().retain(1, { color: 'blue' });
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var b = new Delta().delete(1);
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var expected = new Delta().delete(1);
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expect(a.compose(b)).toEqual(expected);
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});
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it('insert in middle of text', function () {
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var a = new Delta().insert('Hello');
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var b = new Delta().retain(3).insert('X');
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var expected = new Delta().insert('HelXlo');
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expect(a.compose(b)).toEqual(expected);
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});
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it('insert and delete ordering', function () {
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var a = new Delta().insert('Hello');
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var b = new Delta().insert('Hello');
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var insertFirst = new Delta().retain(3).insert('X').delete(1);
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var deleteFirst = new Delta().retain(3).delete(1).insert('X');
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var expected = new Delta().insert('HelXo');
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expect(a.compose(insertFirst)).toEqual(expected);
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expect(b.compose(deleteFirst)).toEqual(expected);
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});
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it('insert embed', function () {
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var a = new Delta().insert(1, { src: 'http://quilljs.com/image.png' });
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var b = new Delta().retain(1, { alt: 'logo' });
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var expected = new Delta().insert(1, { src: 'http://quilljs.com/image.png', alt: 'logo' });
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expect(a.compose(b)).toEqual(expected);
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});
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it('delete entire text', function () {
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var a = new Delta().retain(4).insert('Hello');
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var b = new Delta().delete(9);
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var expected = new Delta().delete(4);
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain more than length of text', function () {
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var a = new Delta().insert('Hello');
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var b = new Delta().retain(10);
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var expected = new Delta().insert('Hello');
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain empty embed', function () {
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var a = new Delta().insert(1);
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var b = new Delta().retain(1);
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var expected = new Delta().insert(1);
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expect(a.compose(b)).toEqual(expected);
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});
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it('remove all attributes', function () {
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var a = new Delta().insert('A', { bold: true });
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var b = new Delta().retain(1, { bold: null });
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var expected = new Delta().insert('A');
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expect(a.compose(b)).toEqual(expected);
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});
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it('remove all embed attributes', function () {
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var a = new Delta().insert(2, { bold: true });
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var b = new Delta().retain(1, { bold: null });
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var expected = new Delta().insert(2);
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expect(a.compose(b)).toEqual(expected);
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});
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it('immutability', function () {
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var attr1 = { bold: true };
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var attr2 = { bold: true };
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var a1 = new Delta().insert('Test', attr1);
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var a2 = new Delta().insert('Test', attr1);
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var b1 = new Delta().retain(1, { color: 'red' }).delete(2);
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var b2 = new Delta().retain(1, { color: 'red' }).delete(2);
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var expected = new Delta().insert('T', { color: 'red', bold: true }).insert('t', attr1);
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expect(a1.compose(b1)).toEqual(expected);
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expect(a1).toEqual(a2);
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expect(b1).toEqual(b2);
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expect(attr1).toEqual(attr2);
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});
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it('retain start optimization', function () {
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var a = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true })
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.delete(1);
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var b = new Delta().retain(3).insert('D');
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var expected = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true })
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.insert('D')
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.delete(1);
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain start optimization split', function () {
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var a = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true })
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.retain(5)
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.delete(1);
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var b = new Delta().retain(4).insert('D');
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var expected = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true })
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.retain(1)
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.insert('D')
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.retain(4)
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.delete(1);
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain end optimization', function () {
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var a = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true });
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var b = new Delta().delete(1);
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var expected = new Delta().insert('B').insert('C', { bold: true })
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expect(a.compose(b)).toEqual(expected);
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});
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it('retain end optimization join', function () {
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var a = new Delta().insert('A', { bold: true })
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.insert('B')
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.insert('C', { bold: true })
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.insert('D')
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.insert('E', { bold: true })
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.insert('F')
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var b = new Delta().retain(1).delete(1);
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var expected = new Delta().insert('AC', { bold: true })
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.insert('D')
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.insert('E', { bold: true })
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.insert('F')
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expect(a.compose(b)).toEqual(expected);
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});
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});
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