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98 lines
5.3 KiB
CoffeeScript
98 lines
5.3 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, variation sequence, or combined character', ->
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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('e\u0301')).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('\u0301')).toBe false
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expect(textUtils.hasPairedCharacter('\uFE0E\uFE0E')).toBe false
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expect(textUtils.hasPairedCharacter('\u0301\u0301')).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, variation sequence, or combined character', ->
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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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expect(textUtils.isPairedCharacter('ae\u0301c', 0)).toBe false
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expect(textUtils.isPairedCharacter('ae\u0301c', 1)).toBe true
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expect(textUtils.isPairedCharacter('ae\u0301c', 2)).toBe false
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expect(textUtils.isPairedCharacter('ae\u0301c', 3)).toBe false
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expect(textUtils.isPairedCharacter('ae\u0301c', 4)).toBe false
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describe ".isDoubleWidthCharacter(character)", ->
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it "returns true when the character is either japanese, chinese or a full width form", ->
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expect(textUtils.isDoubleWidthCharacter("我")).toBe(true)
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expect(textUtils.isDoubleWidthCharacter("私")).toBe(true)
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expect(textUtils.isDoubleWidthCharacter("Ｂ")).toBe(true)
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expect(textUtils.isDoubleWidthCharacter("，")).toBe(true)
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expect(textUtils.isDoubleWidthCharacter("￠")).toBe(true)
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expect(textUtils.isDoubleWidthCharacter("a")).toBe(false)
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describe ".isHalfWidthCharacter(character)", ->
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it "returns true when the character is an half width form", ->
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expect(textUtils.isHalfWidthCharacter("ﾊ")).toBe(true)
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expect(textUtils.isHalfWidthCharacter("ﾋ")).toBe(true)
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expect(textUtils.isHalfWidthCharacter("ﾬ")).toBe(true)
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expect(textUtils.isHalfWidthCharacter("￭")).toBe(true)
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expect(textUtils.isHalfWidthCharacter("B")).toBe(false)
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describe ".isKoreanCharacter(character)", ->
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it "returns true when the character is a korean character", ->
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expect(textUtils.isKoreanCharacter("우")).toBe(true)
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expect(textUtils.isKoreanCharacter("가")).toBe(true)
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expect(textUtils.isKoreanCharacter("ㅢ")).toBe(true)
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expect(textUtils.isKoreanCharacter("ㄼ")).toBe(true)
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expect(textUtils.isKoreanCharacter("O")).toBe(false)
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describe ".isWrapBoundary(previousCharacter, character)", ->
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it "returns true when the character is CJK or when the previous character is a space/tab", ->
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anyCharacter = 'x'
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expect(textUtils.isWrapBoundary(anyCharacter, "我")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "私")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "Ｂ")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "，")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "￠")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "ﾊ")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "ﾋ")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "ﾬ")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "￭")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "우")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "가")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "ㅢ")).toBe(true)
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expect(textUtils.isWrapBoundary(anyCharacter, "ㄼ")).toBe(true)
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expect(textUtils.isWrapBoundary(' ', 'h')).toBe(true)
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expect(textUtils.isWrapBoundary('\t', 'h')).toBe(true)
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expect(textUtils.isWrapBoundary('a', 'h')).toBe(false)
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