From e1c80b170543adf56dffae9790b023053c72a9b0 Mon Sep 17 00:00:00 2001
From: Javier Cicchelli <javier@rock-n-code.com>
Date: Sat, 16 Mar 2024 02:13:20 +0100
Subject: [PATCH] Implemented the "empty" static constant for the
 String+Constants extension in the Foundation library.

---
 .../Sources/Extensions/String+Constants.swift | 18 +++++++++++++
 .../Extensions/String+ConstantsTests.swift    | 27 +++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 Libraries/Foundation/Kit/Sources/Extensions/String+Constants.swift
 create mode 100644 Libraries/Foundation/Test/Tests/Extensions/String+ConstantsTests.swift

diff --git a/Libraries/Foundation/Kit/Sources/Extensions/String+Constants.swift b/Libraries/Foundation/Kit/Sources/Extensions/String+Constants.swift
new file mode 100644
index 0000000..ab80392
--- /dev/null
+++ b/Libraries/Foundation/Kit/Sources/Extensions/String+Constants.swift
@@ -0,0 +1,18 @@
+//
+//  String+Constants.swift
+//  ReviewsFoundation
+//
+//  Created by Javier Cicchelli on 16/03/2024.
+//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
+//
+
+import Foundation
+
+public extension String {
+    
+    // MARK: Constants
+    
+    /// A representation of an empty string.
+    static let empty: String = ""
+    
+}
diff --git a/Libraries/Foundation/Test/Tests/Extensions/String+ConstantsTests.swift b/Libraries/Foundation/Test/Tests/Extensions/String+ConstantsTests.swift
new file mode 100644
index 0000000..fcd80c7
--- /dev/null
+++ b/Libraries/Foundation/Test/Tests/Extensions/String+ConstantsTests.swift
@@ -0,0 +1,27 @@
+//
+//  String+ConstantsTests.swift
+//  ReviewsFoundationTest
+//
+//  Created by Javier Cicchelli on 16/03/2024.
+//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
+//
+
+import ReviewsFoundation
+import XCTest
+
+final class String_ConstantsTests: XCTestCase {
+    
+    // MARK: Properties
+    private var sut: String!
+    
+    // MARK: Constants tests
+    func testEmpty() throws {
+        // GIVEN
+        sut = .empty
+
+        // WHEN
+        // THEN
+        XCTAssertTrue(sut.isEmpty)
+    }
+    
+}