add test for standard impl of CGAffineTransform.concatenating

Author: gn-dave-a

Tests/SVGViewTests/CGTests.swift

@@ -0,0 +1,19 @@
+// Generated by make generate-test-cases
+
+import XCTest
+@testable import SVGView
+
+class CGTests: BaseTestCase {
+
+    func testTransformConcatenation() {
+        let transform1 = CGAffineTransform(translationX: 5, y: 10)
+        let transform2 = CGAffineTransform(scaleX: 2, y: 3)
+        let combined = transform1.concatenating(transform2)
+        
+        XCTAssertEqual(combined.a, 2)
+        XCTAssertEqual(combined.d, 3)
+        XCTAssertEqual(combined.tx, 10)
+        XCTAssertEqual(combined.ty, 30)
+    }
+
+}