Documented the StaticFile enumeration in the library target.

Test/Sources/Cases/Internal/Enumerations/StaticFileTests.swift

@@ -0,0 +1,36 @@
+import Testing
+
+@testable import AppLibrary
+
+@Suite("StaticFile")
+struct StaticFileTests {
+
+    @Test(arguments: zip(StaticFile.allCases, [String].paths))
+    func path(
+        for prefix: StaticFile,
+        expects pathExpected: String
+    ) async throws {
+        // GIVEN
+        // WHEN
+        let path = prefix.path
+        
+        // THEN
+        #expect(path == pathExpected)
+    }
+
+}
+
+// MARK: - Collection+Strings
+
+private extension Collection where Element == String {
+    
+    // MARK: Properties
+    
+    static var paths: [Element] {[
+        "/data/documentation.json",
+        "/favicon.ico",
+        "/favicon.svg",
+        "/theme-settings.json"
+    ]}
+    
+}