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a021c89236
This iterator uses an inline 32-byte buffer so it doesn't have to call copyBytes(to:count:) for every single byte. It results in an approximate 6x speedup on my computer.
33 lines
861 B
Swift
33 lines
861 B
Swift
// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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import StdlibUnittest
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import StdlibCollectionUnittest
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import Foundation
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var DataTestSuite = TestSuite("Data")
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DataTestSuite.test("Data.Iterator semantics") {
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// Empty data
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checkSequence([], Data())
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// Small data
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checkSequence([1,2,4,8,16], Data(bytes: [1,2,4,8,16]))
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// Boundary conditions
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checkSequence([5], Data(bytes: [5]))
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checkSequence(1...31, Data(bytes: Array(1...31)))
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checkSequence(1...32, Data(bytes: Array(1...32)))
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checkSequence(1...33, Data(bytes: Array(1...33)))
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// Large data
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var data = Data(count: 65535)
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data.withUnsafeMutableBytes { (ptr: UnsafeMutablePointer<UInt8>) -> () in
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for i in 0..<data.count {
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ptr[i] = UInt8(i % 23)
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}
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}
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checkSequence((0..<65535).lazy.map({ UInt8($0 % 23) }), data)
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}
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runAllTests()
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