Add NSData sequencetype extension, and test case

Sources/Vapor/Utilities/NSData+SequenceType.swift

@@ -0,0 +1,14 @@
+//
+// NSData+SequenceType.swift
+// Vapor
+//
+// Created by Robert Thompson on 03/02/2016
+//
+
+import Foundation
+
+extension NSData: SequenceType {
+    public func generate() -> UnsafeBufferPointer<UInt8>.Generator {
+        return UnsafeBufferPointer<UInt8>(start: UnsafePointer<UInt8>(self.bytes), count: self.length).generate()
+    }
+}

Tests/Vapor/UtilityTests.swift

@@ -0,0 +1,42 @@
+//
+//  UtilityTests.swift
+//  Vapor
+//
+//  Created by Robert Thompson on 03/02/2016
+//
+
+import XCTest
+@testable import Vapor
+
+#if os(Linux)
+    import Glibc
+    import Foundation
+    extension UtilityTests: XCTestCaseProvider {
+        var allTests : [(String, () throws -> Void)] {
+            return [
+                ("testNSDataSequenceType", testNSDataSequenceType),
+            ]
+        }
+    }
+#endif
+
+class UtilityTests: XCTestCase {
+    func testNSDataSequenceType() {
+        let string = "Hello world!"
+        let bytes = string.withCString {
+            (str: UnsafePointer<CChar>) -> UnsafeMutablePointer<UInt8> in
+            let result = UnsafeMutablePointer<UInt8>.alloc(string.utf8.count + 1)
+            memcpy(result, str, string.utf8.count)
+            return result
+        }
+
+        defer { free(bytes) }
+
+        let data = NSData(bytes: bytes, length: string.utf8.count + 1)
+        var i = 0
+        for byte in data {
+            XCTAssert(byte == bytes[i])
+            i += 1
+        }
+    }
+}