Implemented phase 0 for the POC prototype in the Website service.

Services/Website/Tests/Library/Cases/Internal/Enumerations/FormatTests.swift

@@ -0,0 +1,29 @@
+import Testing
+
+@testable import WebsiteLibrary
+
+@Suite(
+    "Format enumeration",
+    .tags(.enumeration)
+)
+struct FormatTests {
+
+    // MARK: Computed tests
+
+    @Test(arguments: zip(
+        Format.allCases,
+        [
+            "/search?format=single-issues",
+            "/search?format=manga",
+            "/search?format=trade-paperbacks",
+            "/search?format=hardcovers",
+        ]
+    ))
+    func `path`(
+        of format: Format,
+        expects path: String
+    ) {
+        #expect(format.path == path)
+    }
+
+}