foundation.app: fix scraping of image urls.

Foundation changed their HTML page format and we can no longer scrape
the image URL directly from the page. Instead we have to build it based
on API data.

test/test_helpers/source_test_helper.rb

@@ -96,7 +96,7 @@ module SourceTestHelper
             actual_values = actual_value.sort
             expected_value.sort.each_with_index { |each_value, index| assert_match(each_value, actual_values[index]) }
           else
-            assert_equal(expected_value.sort, actual_value)
+            assert_equal(expected_value.sort, actual_value.sort)
           end
         elsif expected_value.nil?
           assert_nil(actual_value)

test/unit/sources/foundation_test.rb

@@ -23,6 +23,17 @@ module Sources
       )
     end
 
+    context "A foundation gif" do
+      strategy_should_work(
+        "https://foundation.app/@patch_oxxo/shine/1",
+        artist_name: "patch_oxxo",
+        profile_url: "https://foundation.app/@patch_oxxo",
+        image_urls: ["https://f8n-ipfs-production.imgix.net/QmWQpt9opcue5F7Q2vTT5P5jPYo1xHhEs7RDxgXzWFHcfK/nft.gif"],
+        download_size: 52_352_138,
+        tags: %w[2d animation],
+      )
+    end
+
     context "A foundation.app/@username/foo-bar-1234 URL" do
       strategy_should_work(
         "https://foundation.app/@asuka111art/dinner-with-cats-82426",