70 lines
1.8 KiB
TypeScript
70 lines
1.8 KiB
TypeScript
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import { Position } from '../src/ast'
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import { getInnerRange, advancePositionBy } from '../src/utils'
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function p(line: number, column: number, offset: number): Position {
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return { column, line, offset }
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}
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describe('advancePositionBy', () => {
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test('same line', () => {
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const pos = p(1, 1, 0)
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const newPos = advancePositionBy(pos, 'foo\nbar', 2)
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expect(newPos.column).toBe(3)
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expect(newPos.line).toBe(1)
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expect(newPos.offset).toBe(2)
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})
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test('same line', () => {
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const pos = p(1, 1, 0)
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const newPos = advancePositionBy(pos, 'foo\nbar', 4)
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expect(newPos.column).toBe(1)
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expect(newPos.line).toBe(2)
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expect(newPos.offset).toBe(4)
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})
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test('multiple lines', () => {
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const pos = p(1, 1, 0)
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const newPos = advancePositionBy(pos, 'foo\nbar\nbaz', 10)
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expect(newPos.column).toBe(2)
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expect(newPos.line).toBe(3)
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expect(newPos.offset).toBe(10)
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})
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})
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describe('getInnerRange', () => {
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const loc1 = {
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source: 'foo\nbar\nbaz',
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start: p(1, 1, 0),
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end: p(3, 3, 11)
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}
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test('at start', () => {
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const loc2 = getInnerRange(loc1, 0, 4)
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expect(loc2.start).toEqual(loc1.start)
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expect(loc2.end.column).toBe(1)
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expect(loc2.end.line).toBe(2)
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expect(loc2.end.offset).toBe(4)
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})
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test('at end', () => {
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const loc2 = getInnerRange(loc1, 4)
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expect(loc2.start.column).toBe(1)
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expect(loc2.start.line).toBe(2)
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expect(loc2.start.offset).toBe(4)
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expect(loc2.end).toEqual(loc1.end)
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})
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test('in between', () => {
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const loc2 = getInnerRange(loc1, 4, 3)
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expect(loc2.start.column).toBe(1)
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expect(loc2.start.line).toBe(2)
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expect(loc2.start.offset).toBe(4)
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expect(loc2.end.column).toBe(3)
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expect(loc2.end.line).toBe(2)
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expect(loc2.end.offset).toBe(7)
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})
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})
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