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f1fd13b0b2
Previously the character count of the entire string was taken even though it was only checking for the presence of a paired character. Now hasPairedCharacter returns as early as possible and the now unused getCharacterCount has been removed.
33 lines
2.1 KiB
CoffeeScript
33 lines
2.1 KiB
CoffeeScript
textUtils = require '../src/text-utils'
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describe 'text utilities', ->
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describe '.hasPairedCharacter(string)', ->
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it 'returns true when the string contains a surrogate pair or variation sequence', ->
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expect(textUtils.hasPairedCharacter('abc')).toBe false
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expect(textUtils.hasPairedCharacter('a\uD835\uDF97b\uD835\uDF97c')).toBe true
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expect(textUtils.hasPairedCharacter('\uD835\uDF97')).toBe true
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expect(textUtils.hasPairedCharacter('\u2714\uFE0E')).toBe true
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expect(textUtils.hasPairedCharacter('\uD835')).toBe false
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expect(textUtils.hasPairedCharacter('\uDF97')).toBe false
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expect(textUtils.hasPairedCharacter('\uFE0E')).toBe false
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expect(textUtils.hasPairedCharacter('\uFE0E\uFE0E')).toBe false
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describe '.isPairedCharacter(string, index)', ->
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it 'returns true when the index is the start of a high/low surrogate pair or variation sequence', ->
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 0)).toBe false
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 1)).toBe true
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 2)).toBe false
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 3)).toBe false
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 4)).toBe true
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 5)).toBe false
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expect(textUtils.isPairedCharacter('a\uD835\uDF97b\uD835\uDF97c', 6)).toBe false
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expect(textUtils.isPairedCharacter('a\u2714\uFE0E', 0)).toBe false
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expect(textUtils.isPairedCharacter('a\u2714\uFE0E', 1)).toBe true
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expect(textUtils.isPairedCharacter('a\u2714\uFE0E', 2)).toBe false
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expect(textUtils.isPairedCharacter('a\u2714\uFE0E', 3)).toBe false
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expect(textUtils.isPairedCharacter('\uD835')).toBe false
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expect(textUtils.isPairedCharacter('\uDF97')).toBe false
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expect(textUtils.isPairedCharacter('\uFE0E')).toBe false
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expect(textUtils.isPairedCharacter('\uFE0E')).toBe false
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expect(textUtils.isPairedCharacter('\uFE0E\uFE0E')).toBe false
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