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[test] minor tweaks to Substring test #85597

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[test] minor tweaks to Substring test #85597

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6 changes: 3 additions & 3 deletions test/stdlib/subString.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,7 @@ SubstringTests.test("Mutate Substring through utf16 view") {
expectEqual(s.startIndex, ss.startIndex)
expectEqual(s.count, ss.count)
let first = ss.utf16.removeFirst()
expectEqual(first, UInt16(97))
expectEqual(s.index(after: s.startIndex), ss.startIndex)
expectEqual(s.count - 1, ss.count)
}
Expand All @@ -232,7 +233,6 @@ SubstringTests.test("UTF8View") {
]

for s in strs {
let count = s.count
let t = s.utf8.dropFirst(2)
let u = t.dropFirst(2)

Expand All @@ -254,8 +254,8 @@ SubstringTests.test("UTF8View") {
checkHasContiguousStorageSubstring(u)
checkMatchContiguousStorage(Array(s.utf8), s.utf8)

// The specialization for Substring.withContiguousStorageIfAvailable was
// added in https://github.com/apple/swift/pull/29146.
// The specialization for Substring.UTF8View.withContiguousStorageIfAvailable
// was added in https://github.com/apple/swift/pull/29146.
guard #available(SwiftStdlib 5.3, *) else {
return
}
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