+ def test_text_no_image
+ r = RichText.new("text", "foo https://example.com/ bar")
+ assert_nil r.image
+ end
+
+ def test_html_no_image
+ r = RichText.new("html", "foo <a href='https://example.com/'>bar</a> baz")
+ assert_nil r.image
+ end
+
+ def test_markdown_no_image
+ r = RichText.new("markdown", "foo [bar](https://example.com/) baz")
+ assert_nil r.image
+ end
+
+ def test_markdown_image
+ r = RichText.new("markdown", "foo  baz")
+ assert_equal "https://example.com/image.jpg", r.image
+ end
+
+ def test_markdown_first_image
+ r = RichText.new("markdown", "foo  baz\nfoo  baz")
+ assert_equal "https://example.com/image1.jpg", r.image
+ end
+