Added tests for NSOperatingSystemVersion

Author: rsmoz

Foundation/NSProcessInfo.swift

@@ -20,6 +20,7 @@ public struct NSOperatingSystemVersion {
     public var majorVersion: Int
     public var minorVersion: Int
     public var patchVersion: Int
+	
     public init() {
         self.init(majorVersion: 0, minorVersion: 0, patchVersion: 0)
     }
@@ -31,11 +32,7 @@ public struct NSOperatingSystemVersion {
     }
 }
 
-extension NSOperatingSystemVersion : Comparable {
-    public init(_ majorVersion: Int, _ minorVersion: Int, _ patchVersion: Int) {
-        self.init(majorVersion: majorVersion, minorVersion: minorVersion, patchVersion: patchVersion)
-    }
-}
+extension NSOperatingSystemVersion : Comparable {}
 
 public func ==(lhs: NSOperatingSystemVersion, rhs: NSOperatingSystemVersion) -> Bool {
     let lhsTuple = (lhs.majorVersion, lhs.minorVersion, lhs.patchVersion)

TestFoundation/TestNSProcessInfo.swift

@@ -34,6 +34,11 @@ class TestNSProcessInfo : XCTestCase {
 
         let version = processInfo.operatingSystemVersion
         XCTAssertNotNil(version.majorVersion != 0)
+        
+        XCTAssertEqual(NSOperatingSystemVersion(), NSOperatingSystemVersion())
+        XCTAssertEqual(NSOperatingSystemVersion(majorVersion: 0, minorVersion: 0, patchVersion: 0), NSOperatingSystemVersion())
+        XCTAssertLessThan(NSOperatingSystemVersion(majorVersion: 0, minorVersion: 0, patchVersion: 1), NSOperatingSystemVersion(majorVersion: 0, minorVersion: 0, patchVersion: 2))
+        XCTAssertGreaterThan(NSOperatingSystemVersion(majorVersion: 0, minorVersion: 0, patchVersion: 2), NSOperatingSystemVersion(majorVersion: 0, minorVersion: 0, patchVersion: 1)) //Guards against false positives in LT test
     }
 
     func test_processName() {