fixed attributionSrc behavior for 3 macros

Author: RandomHashTags

Sources/HTMLKit/HTMLKit.swift

@@ -58,7 +58,7 @@ public macro custom<T: ExpressibleByStringLiteral>(tag: String, isVoid: Bool, at
 public macro a<T: ExpressibleByStringLiteral>(
     attributes: [HTMLElementAttribute] = [],
 
-    attributionSrc: [T]? = nil,
+    attributionsrc: [T] = [],
     download: HTMLElementAttribute.Extra.download? = nil,
     href: T? = nil,
     hreflang: T? = nil,
@@ -475,7 +475,7 @@ public macro img<T: ExpressibleByStringLiteral>(
     attributes: [HTMLElementAttribute] = [],
 
     alt: T? = nil,
-    attributionSrc: [T]? = nil,
+    attributionsrc: [T] = [],
     crossorigin: HTMLElementAttribute.Extra.crossorigin? = nil,
     decoding: HTMLElementAttribute.Extra.decoding? = nil,
     elementtiming: T? = nil,
@@ -803,7 +803,7 @@ public macro script<T: ExpressibleByStringLiteral>(
     attributes: [HTMLElementAttribute] = [],
 
     async: Bool = false,
-    attributionSrc: [T]? = nil,
+    attributionsrc: [T] = [],
     blocking: HTMLElementAttribute.Extra.blocking? = nil,
     crossorigin: HTMLElementAttribute.Extra.crossorigin? = nil,
     defer: Bool = false,

Sources/HTMLKitMacros/HTMLElement.swift

@@ -269,7 +269,8 @@ private extension HTMLElement {
             switch returnType {
             case .boolean: return string.elementsEqual("true") ? key : nil
             case .string, .enumCase:
-                if returnType == .enumCase && string.isEmpty {
+                if returnType == .enumCase && string.isEmpty
+                    || returnType == .string && key == "attributionsrc" && string.isEmpty {
                     return key
                 }
                 string.escapeHTML(escapeAttributes: true)

Tests/HTMLKitTests/AttributeTests.swift

@@ -26,6 +26,13 @@ struct AttributeTests {
         string = #div(attributes: [.ariaattribute(.controls(["testing", "123", "yup"]))])
         #expect(string == "<div aria-controls=\"testing 123 yup\"></div>")
     }
+    @Test func attributionsrc() {
+        var string:StaticString = #a(attributionsrc: [])
+        #expect(string == "<a attributionsrc></a>")
+
+        string = #a(attributionsrc: ["https://github.com/RandomHashTags", "https://litleagues.com"])
+        #expect(string == "<a attributionsrc=\"https://github.com/RandomHashTags https://litleagues.com\"></a>")
+    }
     @Test func data() {
         let string:StaticString = #div(attributes: [.data("id", "5")])
         #expect(string == "<div data-id=\"5\"></div>")