Add tests for the HTML escaping function, incl. crashing case

Author: vzsg

Tests/LeafTests/HTMLEscapeTests.swift

@@ -0,0 +1,24 @@
+import Foundation
+import XCTest
+@testable import Leaf
+
+class HTMLEscapeTests: XCTestCase {
+    static let allTests = [
+        ("testHTMLEscape", testHTMLEscape),
+        ("testHTMLEscapeCRLFQuotes", testHTMLEscapeCRLFQuotes),
+    ]
+
+    func testHTMLEscape() throws {
+        let input = "&\"'<>"
+        let expected = "&amp;&quot;&#39;&lt;&gt;"
+        
+        XCTAssertEqual(input.htmlEscaped(), expected)
+    }
+    
+    func testHTMLEscapeCRLFQuotes() throws {
+        let input = "\r\n\""
+        let expected = "\r\n&quot;"
+        
+        XCTAssertEqual(input.htmlEscaped(), expected)
+    }
+}

Tests/LinuxMain.swift

@@ -9,6 +9,7 @@ XCTMain([
      testCase(FileLoadTests.allTests),
      testCase(IfTests.allTests),
      testCase(IndexTests.allTests),
+     testCase(HTMLEscapeTests.allTests),
      testCase(LinkTests.allTests),
      testCase(LoopTests.allTests),
      testCase(NodeRenderTests.allTests),