add more test and documentation

Source/SpeedLog.swift

@@ -12,31 +12,37 @@ typealias SLog = SpeedLog
 
 ///LogMode type. Specify what details should be included to the log
 public struct LogMode : OptionSetType {
-  
+
   private var value: UInt = 0
-
-  public init(_ value: UInt)         { self.value = value }
+  public var rawValue: UInt { return value }
+
   public init(rawValue value: UInt)  { self.value = value }
-  public init(nilLiteral: ())        { self.value = 0 }
-
-  public static var allZeros: LogMode { return self.init(0) }
-  public var rawValue: UInt { return self.value }
-
+  public init(_ value: UInt)         { self.value = value }
+
   //MARK:- Options
-  public static var None: LogMode        { return self.init(0) }
-  public static var FileName: LogMode    { return self.init(1 << 0) }
-  public static var FuncName: LogMode    { return self.init(1 << 1) }
-  public static var Line: LogMode        { return self.init(1 << 2) }
+  public static var None     = LogMode(rawValue: 0)
+  public static var FileName = LogMode(rawValue: 1 << 0)
+  public static var FuncName = LogMode(rawValue: 1 << 1)
+  public static var Line     = LogMode(rawValue: 1 << 2)
 
   /// AllOptions - Enable all options, [FileName, FuncName, Line]
-  public static var AllOptions: LogMode  { return [FileName, FuncName, Line] }
+  public static var AllOptions: LogMode = [FileName, FuncName, Line]
 }
 
+
 ///SpeedLog Type
 public struct SpeedLog {
   /// Log Mode
   public static var mode: LogMode = .None
 
+  /**
+   print items to the console
+
+   - parameter items:      items to print
+   - parameter separator:  separator between items. Default is space" "
+   - parameter terminator: a character inserted at the end of output.
+   */
+
   public static func print(items: Any..., separator: String = " ", terminator: String = "\n", _ file: String = __FILE__, _ function: String = __FUNCTION__, _ line: Int = __LINE__) {
     #if ENABLE_LOG
       let prefix = printStringForMode(file, function: function, line: line)
@@ -48,6 +54,9 @@ public struct SpeedLog {
 
 extension SpeedLog {
 
+  /**
+   Creates an output string for the currect log Mode
+  */
   static func printStringForMode(file: String, function: String, line: Int) -> String {
     var result: String = ""
     if mode.contains(.FileName) {

Tests/SpeedLogTests.swift

@@ -29,7 +29,12 @@ class SpeedLogTests: XCTestCase {
 
   func testLinePrefix() {
     let prefix = logForMode(.Line)
-    XCTAssertEqual(prefix, "[\(10)]: ")
+    XCTAssertEqual(prefix, "[10]: ")
+  }
+
+  func testAllOptionsPrefix() {
+    let prefix = logForMode(.AllOptions)
+    XCTAssertEqual(prefix, "File.FuncA[10]: ")
   }
 }