+ def test_text_no_image
+ r = RichText.new("text", "foo https://example.com/ bar")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_html_no_image
+ r = RichText.new("html", "foo <a href='https://example.com/'>bar</a> baz")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_no_image
+ r = RichText.new("markdown", "foo [bar](https://example.com/) baz")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_image
+ r = RichText.new("markdown", "foo ![bar](https://example.com/image.jpg) baz")
+ assert_equal "https://example.com/image.jpg", r.image
+ assert_equal "bar", r.image_alt
+ end
+
+ def test_markdown_first_image
+ r = RichText.new("markdown", "foo ![bar1](https://example.com/image1.jpg) baz\nfoo ![bar2](https://example.com/image2.jpg) baz")
+ assert_equal "https://example.com/image1.jpg", r.image
+ assert_equal "bar1", r.image_alt
+ end
+
+ def test_markdown_image_with_empty_src
+ r = RichText.new("markdown", "![invalid]()")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_skip_image_with_empty_src
+ r = RichText.new("markdown", "![invalid]() ![valid](https://example.com/valid.gif)")
+ assert_equal "https://example.com/valid.gif", r.image
+ assert_equal "valid", r.image_alt
+ end
+
+ def test_markdown_html_image
+ r = RichText.new("markdown", "<img src='https://example.com/img_element.png' alt='alt text here'>")
+ assert_equal "https://example.com/img_element.png", r.image
+ assert_equal "alt text here", r.image_alt
+ end
+
+ def test_markdown_html_image_without_alt
+ r = RichText.new("markdown", "<img src='https://example.com/img_element.png'>")
+ assert_equal "https://example.com/img_element.png", r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_html_image_with_empty_src
+ r = RichText.new("markdown", "<img src='' alt='forgot src'>")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_skip_html_image_with_empty_src
+ r = RichText.new("markdown", "<img src='' alt='forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
+ assert_equal "https://example.com/next_img_element.png", r.image
+ assert_equal "have src", r.image_alt
+ end
+
+ def test_markdown_html_image_without_src
+ r = RichText.new("markdown", "<img alt='totally forgot src'>")
+ assert_nil r.image
+ assert_nil r.image_alt
+ end
+
+ def test_markdown_skip_html_image_without_src
+ r = RichText.new("markdown", "<img alt='totally forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
+ assert_equal "https://example.com/next_img_element.png", r.image
+ assert_equal "have src", r.image_alt
+ end
+