73 lines
1.9 KiB
JavaScript
73 lines
1.9 KiB
JavaScript
'use strict'
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const tap = require('tap')
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const readEscapeSequence = require('./read-escape-sequence')
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tap.test('throws for bad sequence', async t => {
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const input = Buffer.from('foo\\ø')
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t.throws(
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() => readEscapeSequence({ searchBuffer: input, startPos: 3 }),
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Error('invalid hex code in escape sequence')
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)
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})
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tap.test('reads a single ascii sequence', async t => {
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const input = Buffer.from('foo\\#bar', 'utf8')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 3
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})
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t.equal(parsed.toString(), '#')
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t.equal(endPos, 5)
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})
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tap.test('reads a sequence of ascii sequences', async t => {
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const input = Buffer.from('foo\\#\\!bar', 'utf8')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 3
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})
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t.equal(parsed.toString(), '#!')
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t.equal(endPos, 7)
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})
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tap.test('reads a single hex sequence', async t => {
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const input = Buffer.from('foo\\2abar', 'utf8')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 3
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})
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t.equal(parsed.toString(), '*')
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t.equal(endPos, 6)
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})
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tap.test('reads 2-byte utf-8 sequence', async t => {
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const input = Buffer.from('fo\\c5\\8f bar')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 2
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})
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t.equal(parsed.toString(), 'ŏ')
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t.equal(endPos, 8)
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})
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tap.test('reads 3-byte utf-8 sequence', async t => {
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const input = Buffer.from('fo\\e0\\b0\\b0 bar')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 2
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})
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t.equal(parsed.toString(), 'ర')
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t.equal(endPos, 11)
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})
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tap.test('reads 4-byte utf-8 sequence', async t => {
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const input = Buffer.from('fo\\f0\\92\\84\\ad bar')
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const { parsed, endPos } = readEscapeSequence({
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searchBuffer: input,
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startPos: 2
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})
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t.equal(parsed.toString(), '𒄭')
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t.equal(endPos, 14)
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})
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