1 files changed, 116 insertions, 0 deletions
diff --git a/actiontext/test/unit/content_test.rb b/actiontext/test/unit/content_test.rb
new file mode 100644
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+++ b/actiontext/test/unit/content_test.rb
@@ -0,0 +1,116 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class ActionText::ContentTest < ActiveSupport::TestCase
+  test "equality" do
+    html = "<div>test</div>"
+    content = content_from_html(html)
+    assert_equal content, content_from_html(html)
+    assert_not_equal content, html
+  end
+
+  test "marshal serialization" do
+    content = content_from_html("Hello!")
+    assert_equal content, Marshal.load(Marshal.dump(content))
+  end
+
+  test "roundtrips HTML without additional newlines" do
+    html = "<div>a<br></div>"
+    content = content_from_html(html)
+    assert_equal html, content.to_html
+  end
+
+  test "extracts links" do
+    html = '<a href="http://example.com/1">1</a><br><a href="http://example.com/1">1</a>'
+    content = content_from_html(html)
+    assert_equal ["http://example.com/1"], content.links
+  end
+
+  test "extracts attachables" do
+    attachable = create_file_blob(filename: "racecar.jpg", content_type: "image/jpg")
+    html = %Q(<action-text-attachment sgid="#{attachable.attachable_sgid}" caption="Captioned"></action-text-attachment>)
+
+    content = content_from_html(html)
+    assert_equal 1, content.attachments.size
+
+    attachment = content.attachments.first
+    assert_equal "Captioned", attachment.caption
+    assert_equal attachable, attachment.attachable
+  end
+
+  test "extracts remote image attachables" do
+    html = '<action-text-attachment content-type="image" url="http://example.com/cat.jpg" width="100" height="100" caption="Captioned"></action-text-attachment>'
+
+    content = content_from_html(html)
+    assert_equal 1, content.attachments.size
+
+    attachment = content.attachments.first
+    assert_equal "Captioned", attachment.caption
+
+    attachable = attachment.attachable
+    assert_kind_of ActionText::Attachables::RemoteImage, attachable
+    assert_equal "http://example.com/cat.jpg", attachable.url
+    assert_equal "100", attachable.width
+    assert_equal "100", attachable.height
+  end
+
+  test "identifies destroyed attachables as missing" do
+    attachable = create_file_blob(filename: "racecar.jpg", content_type: "image/jpg")
+    html = %Q(<action-text-attachment sgid="#{attachable.attachable_sgid}"></action-text-attachment>)
+    attachable.destroy!
+    content = content_from_html(html)
+    assert_equal 1, content.attachments.size
+    assert_equal ActionText::Attachables::MissingAttachable, content.attachments.first.attachable
+  end
+
+  test "extracts missing attachables" do
+    html = '<action-text-attachment sgid="missing"></action-text-attachment>'
+    content = content_from_html(html)
+    assert_equal 1, content.attachments.size
+    assert_equal ActionText::Attachables::MissingAttachable, content.attachments.first.attachable
+  end
+
+  test "converts Trix-formatted attachments" do
+    html = %Q(<figure data-trix-attachment='{"sgid":"123","contentType":"text/plain","width":100,"height":100}' data-trix-attributes='{"caption":"Captioned"}'></figure>)
+    content = content_from_html(html)
+    assert_equal 1, content.attachments.size
+    assert_equal '<action-text-attachment sgid="123" content-type="text/plain" width="100" height="100" caption="Captioned"></action-text-attachment>', content.to_html
+  end
+
+  test "ignores Trix-formatted attachments with malformed JSON" do
+    html = %Q(<div data-trix-attachment='{"sgid":"garbage...'></div>)
+    content = content_from_html(html)
+    assert_equal 0, content.attachments.size
+  end
+
+  test "minifies attachment markup" do
+    html = '<action-text-attachment sgid="123"><div>HTML</div></action-text-attachment>'
+    assert_equal '<action-text-attachment sgid="123"></action-text-attachment>', content_from_html(html).to_html
+  end
+
+  test "canonicalizes attachment gallery markup" do
+    attachment_html = '<action-text-attachment sgid="1" presentation="gallery"></action-text-attachment><action-text-attachment sgid="2" presentation="gallery"></action-text-attachment>'
+    html = %Q(<div class="attachment-gallery attachment-gallery--2">#{attachment_html}</div>)
+    assert_equal "<div>#{attachment_html}</div>", content_from_html(html).to_html
+  end
+
+  test "canonicalizes attachment gallery markup with whitespace" do
+    attachment_html = %Q(\n  <action-text-attachment sgid="1" presentation="gallery"></action-text-attachment>\n  <action-text-attachment sgid="2" presentation="gallery"></action-text-attachment>\n)
+    html = %Q(<div class="attachment-gallery attachment-gallery--2">#{attachment_html}</div>)
+    assert_equal "<div>#{attachment_html}</div>", content_from_html(html).to_html
+  end
+
+  test "canonicalizes nested attachment gallery markup" do
+    attachment_html = '<action-text-attachment sgid="1" presentation="gallery"></action-text-attachment><action-text-attachment sgid="2" presentation="gallery"></action-text-attachment>'
+    html = %Q(<blockquote><div class="attachment-gallery attachment-gallery--2">#{attachment_html}</div></blockquote>)
+    assert_equal "<blockquote><div>#{attachment_html}</div></blockquote>", content_from_html(html).to_html
+  end
+
+  private
+    def content_from_html(html)
+      ActionText::Content.new(html).tap do |content|
+        assert_nothing_raised { content.to_s }
+      end
+    end
+end