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[test] Make string internal testing a little more robust; NFC

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Add an isSmall query to Character so testing doesn't have to bake in
internal format. Clarify the purpose of the invalid UTF-16 backdoor
creation method.
This commit is contained in:
Michael Ilseman
2018-08-02 15:47:07 -07:00
parent df7c76f7da
commit ced2e63d95
5 changed files with 18 additions and 21 deletions
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4
validation-test/stdlib/StringViews.swift
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@@ -37,8 +37,8 @@ let replacementCharacter = Character(replacementScalar)
// UTF16, grapheme clusters composed of multiple Unicode scalars, and
// invalid UTF16 that should be replaced with replacement characters.
let winterUTF16 = Array("🏂☃❅❆❄︎⛄️❄️".utf16) + [0xD83C, 0x0020, 0xDF67, 0xD83C]
var winter = winterUTF16.withUnsafeBufferPointer { bufPtr in
_StringGuts._createStringFromUTF16(bufPtr)
var winter = winterUTF16.withUnsafeBufferPointer {
String._fromInvalidUTF16($0)
}
let winterInvalidUTF8: [UTF8.CodeUnit] = replacementUTF8 + ([0x20] as [UTF8.CodeUnit]) + replacementUTF8 + replacementUTF8