forked from zhurui/management
51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
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var Delta = require('../../lib/delta');
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describe('transformPosition()', function () {
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it('insert before position', function () {
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var delta = new Delta().insert('A');
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expect(delta.transform(2)).toEqual(3);
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});
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it('insert after position', function () {
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var delta = new Delta().retain(2).insert('A');
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expect(delta.transform(1)).toEqual(1);
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});
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it('insert at position', function () {
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var delta = new Delta().retain(2).insert('A');
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expect(delta.transform(2, true)).toEqual(2);
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expect(delta.transform(2, false)).toEqual(3);
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});
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it('delete before position', function () {
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var delta = new Delta().delete(2);
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expect(delta.transform(4)).toEqual(2);
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});
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it('delete after position', function () {
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var delta = new Delta().retain(4).delete(2);
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expect(delta.transform(2)).toEqual(2);
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});
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it('delete across position', function () {
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var delta = new Delta().retain(1).delete(4);
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expect(delta.transform(2)).toEqual(1);
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});
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it('insert and delete before position', function () {
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var delta = new Delta().retain(2).insert('A').delete(2);
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expect(delta.transform(4)).toEqual(3);
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});
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it('insert before and delete across position', function () {
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var delta = new Delta().retain(2).insert('A').delete(4);
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expect(delta.transform(4)).toEqual(3);
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});
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it('delete before and delete across position', function () {
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var delta = new Delta().delete(1).retain(1).delete(4);
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expect(delta.transform(4)).toEqual(1);
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});
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});
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