Measurements: NumberTests+Glyph.swift.

Author: oscbyspro

Tests/DiffableTextStylesXNumericTests/Number/NumberTests+Number.swift

@@ -0,0 +1,67 @@
+//=----------------------------------------------------------------------------=
+// This source file is part of the DiffableTextViews open source project.
+//
+// Copyright (c) 2022 Oscar Byström Ericsson
+// Licensed under Apache License, Version 2.0
+//
+// See http://www.apache.org/licenses/LICENSE-2.0 for license information.
+//=----------------------------------------------------------------------------=
+
+#if DEBUG
+
+import DiffableTestKit
+@testable import DiffableTextStylesXNumeric
+
+//*============================================================================*
+// MARK: * NumberTests x Glyph
+//*============================================================================*
+
+final class NumberTestsXGlyph: Tests {
+    
+    //=------------------------------------------------------------------------=
+    // MARK: State
+    //=------------------------------------------------------------------------=
+    
+    let iterations = 1
+    let digits = [Digit](repeating: .seven, count: 1)
+    
+    //=------------------------------------------------------------------------=
+    // MARK: Tests
+    //=------------------------------------------------------------------------=
+    
+    /// 10,000 digits and 10,000 iterations: 10.137 seconds.
+    func test_Digits_ForEachUnicodeScalar_String() {
+        measure {
+            var accumulator = String()
+            accumulator.reserveCapacity(digits.count * iterations)
+            //=--------------------------------------=
+            // MARK: Append
+            //=--------------------------------------=
+            for _ in 0 ..< iterations {
+                for digit in digits {
+                    digit.unicode.write(to: &accumulator)
+                }
+            }
+        }
+    }
+    
+    /// 10,000 digits and 10,000 iterations: 0.030 seconds.
+    func test_Digits_UnsafeBitCastToBytes_String() {
+        measure {
+            var accumulator = [UInt8]()
+            accumulator.reserveCapacity(digits.count * iterations)
+            //=--------------------------------------=
+            // MARK: Append
+            //=--------------------------------------=
+            for _ in 0 ..< iterations {
+                accumulator.append(contentsOf: unsafeBitCast(digits, to: [UInt8].self))
+            }
+            //=----------------------------------=
+            // MARK: Result
+            //=----------------------------------=
+            let _ = String(bytes: accumulator, encoding: .utf8)
+        }
+    }
+}
+
+#endif