test/lib/rich_text_test.rb

   1 require "test_helper"
   2
   3 class RichTextTest < ActiveSupport::TestCase
   4   include Rails::Dom::Testing::Assertions::SelectorAssertions
   5
   6   def test_html_to_html
   7     r = RichText.new("html", "foo http://example.com/ bar")
   8     assert_html r do
   9       assert_select "a", 1
  10       assert_select "a[href='http://example.com/']", 1
  11       assert_select "a[rel='nofollow noopener noreferrer']", 1
  12     end
  13
  14     r = RichText.new("html", "foo <a href='http://example.com/'>bar</a> baz")
  15     assert_html r do
  16       assert_select "a", 1
  17       assert_select "a[href='http://example.com/']", 1
  18       assert_select "a[rel='nofollow noopener noreferrer']", 1
  19     end
  20
  21     r = RichText.new("html", "foo <a rel='junk me trash' href='http://example.com/'>bar</a> baz")
  22     assert_html r do
  23       assert_select "a", 1
  24       assert_select "a[href='http://example.com/']", 1
  25       assert_select "a[rel='me nofollow noopener noreferrer']", 1
  26     end
  27
  28     r = RichText.new("html", "foo example@example.com bar")
  29     assert_html r do
  30       assert_select "a", 0
  31     end
  32
  33     r = RichText.new("html", "foo <a href='mailto:example@example.com'>bar</a> baz")
  34     assert_html r do
  35       assert_select "a", 1
  36       assert_select "a[href='mailto:example@example.com']", 1
  37       assert_select "a[rel='nofollow noopener noreferrer']", 1
  38     end
  39
  40     r = RichText.new("html", "foo <div>bar</div> baz")
  41     assert_html r do
  42       assert_select "div", false
  43       assert_select "p", /^foo *bar *baz$/
  44     end
  45
  46     r = RichText.new("html", "foo <script>bar = 1;</script> baz")
  47     assert_html r do
  48       assert_select "script", false
  49       assert_select "p", /^foo *baz$/
  50     end
  51
  52     r = RichText.new("html", "foo <style>div { display: none; }</style> baz")
  53     assert_html r do
  54       assert_select "style", false
  55       assert_select "p", /^foo *baz$/
  56     end
  57
  58     r = RichText.new("html", "<table><tr><td>column</td></tr></table>")
  59     assert_html r do
  60       assert_select "table[class='table table-sm w-auto']"
  61     end
  62
  63     r = RichText.new("html", "<p class='btn btn-warning'>Click Me</p>")
  64     assert_html r do
  65       assert_select "p[class='btn btn-warning']", false
  66       assert_select "p", /^Click Me$/
  67     end
  68
  69     r = RichText.new("html", "<p style='color:red'>Danger</p>")
  70     assert_html r do
  71       assert_select "p[style='color:red']", false
  72       assert_select "p", /^Danger$/
  73     end
  74   end
  75
  76   def test_html_to_text
  77     r = RichText.new("html", "foo <a href='http://example.com/'>bar</a> baz")
  78     assert_equal "foo <a href='http://example.com/'>bar</a> baz", r.to_text
  79   end
  80
  81   def test_html_spam_score
  82     r = RichText.new("html", "foo <a href='http://example.com/'>bar</a> baz")
  83     assert_equal 55, r.spam_score.round
  84   end
  85
  86   def test_markdown_to_html
  87     r = RichText.new("markdown", "foo http://example.com/ bar")
  88     assert_html r do
  89       assert_select "a", 1
  90       assert_select "a[href='http://example.com/']", 1
  91       assert_select "a[rel='nofollow noopener noreferrer']", 1
  92     end
  93
  94     r = RichText.new("markdown", "foo [bar](http://example.com/) baz")
  95     assert_html r do
  96       assert_select "a", 1
  97       assert_select "a[href='http://example.com/']", 1
  98       assert_select "a[rel='nofollow noopener noreferrer']", 1
  99     end
 100
 101     r = RichText.new("markdown", "foo <a rel='junk me trash' href='http://example.com/'>bar</a>) baz")
 102     assert_html r do
 103       assert_select "a", 1
 104       assert_select "a[href='http://example.com/']", 1
 105       assert_select "a[rel='me nofollow noopener noreferrer']", 1
 106     end
 107
 108     r = RichText.new("markdown", "foo example@example.com bar")
 109     assert_html r do
 110       assert_select "a", 1
 111       assert_select "a[href='mailto:example@example.com']", 1
 112       assert_select "a[rel='nofollow noopener noreferrer']", 1
 113     end
 114
 115     r = RichText.new("markdown", "foo [bar](mailto:example@example.com) bar")
 116     assert_html r do
 117       assert_select "a", 1
 118       assert_select "a[href='mailto:example@example.com']", 1
 119       assert_select "a[rel='nofollow noopener noreferrer']", 1
 120     end
 121
 122     r = RichText.new("markdown", "foo ![bar](http://example.com/example.png) bar")
 123     assert_html r do
 124       assert_select "img", 1
 125       assert_select "img[alt='bar']", 1
 126       assert_select "img[src='http://example.com/example.png']", 1
 127     end
 128
 129     r = RichText.new("markdown", "# foo bar baz")
 130     assert_html r do
 131       assert_select "h1", "foo bar baz"
 132     end
 133
 134     r = RichText.new("markdown", "## foo bar baz")
 135     assert_html r do
 136       assert_select "h2", "foo bar baz"
 137     end
 138
 139     r = RichText.new("markdown", "### foo bar baz")
 140     assert_html r do
 141       assert_select "h3", "foo bar baz"
 142     end
 143
 144     r = RichText.new("markdown", "* foo bar baz")
 145     assert_html r do
 146       assert_select "ul" do
 147         assert_select "li", "foo bar baz"
 148       end
 149     end
 150
 151     r = RichText.new("markdown", "1. foo bar baz")
 152     assert_html r do
 153       assert_select "ol" do
 154         assert_select "li", "foo bar baz"
 155       end
 156     end
 157
 158     r = RichText.new("markdown", "foo *bar* _baz_ qux")
 159     assert_html r do
 160       assert_select "em", "bar"
 161       assert_select "em", "baz"
 162     end
 163
 164     r = RichText.new("markdown", "foo **bar** __baz__ qux")
 165     assert_html r do
 166       assert_select "strong", "bar"
 167       assert_select "strong", "baz"
 168     end
 169
 170     r = RichText.new("markdown", "foo `bar` baz")
 171     assert_html r do
 172       assert_select "code", "bar"
 173     end
 174
 175     r = RichText.new("markdown", "    foo bar baz")
 176     assert_html r do
 177       assert_select "pre", /^\s*foo bar baz\s*$/
 178     end
 179
 180     r = RichText.new("markdown", "|column|column")
 181     assert_html r do
 182       assert_select "table[class='table table-sm w-auto']"
 183     end
 184
 185     r = RichText.new("markdown", "Click Me\n{:.btn.btn-warning}")
 186     assert_html r do
 187       assert_select "p[class='btn btn-warning']", false
 188       assert_select "p", /^Click Me$/
 189     end
 190
 191     r = RichText.new("markdown", "<p style='color:red'>Danger</p>")
 192     assert_html r do
 193       assert_select "p[style='color:red']", false
 194       assert_select "p", /^Danger$/
 195     end
 196   end
 197
 198   def test_markdown_table_alignment
 199     # Ensure that kramdown table alignment styles are converted to bootstrap classes
 200     markdown_table = <<~MARKDOWN
 201       | foo  | bar |
 202       |:----:|----:|
 203       |center|right|
 204     MARKDOWN
 205     r = RichText.new("markdown", markdown_table)
 206     assert_html r do
 207       assert_select "td[style='text-align:center']", false
 208       assert_select "td[class='text-center']", true
 209       assert_select "td[style='text-align:right']", false
 210       assert_select "td[class='text-end']", true
 211     end
 212   end
 213
 214   def test_markdown_to_text
 215     r = RichText.new("markdown", "foo [bar](http://example.com/) baz")
 216     assert_equal "foo [bar](http://example.com/) baz", r.to_text
 217   end
 218
 219   def test_markdown_spam_score
 220     r = RichText.new("markdown", "foo [bar](http://example.com/) baz")
 221     assert_equal 50, r.spam_score.round
 222   end
 223
 224   def test_text_to_html
 225     r = RichText.new("text", "foo http://example.com/ bar")
 226     assert_html r do
 227       assert_select "a", 1
 228       assert_select "a[href='http://example.com/']", 1
 229       assert_select "a[rel='nofollow noopener noreferrer']", 1
 230     end
 231
 232     r = RichText.new("text", "foo example@example.com bar")
 233     assert_html r do
 234       assert_select "a", 0
 235     end
 236
 237     r = RichText.new("text", "foo < bar & baz > qux")
 238     assert_html r do
 239       assert_select "p", "foo < bar & baz > qux"
 240     end
 241   end
 242
 243   def test_text_to_text
 244     r = RichText.new("text", "foo http://example.com/ bar")
 245     assert_equal "foo http://example.com/ bar", r.to_text
 246   end
 247
 248   def test_text_spam_score
 249     r = RichText.new("text", "foo http://example.com/ bar")
 250     assert_equal 141, r.spam_score.round
 251   end
 252
 253   def test_text_no_opengraph_properties
 254     r = RichText.new("text", "foo https://example.com/ bar")
 255     assert_nil r.image
 256     assert_nil r.image_alt
 257     assert_nil r.description
 258   end
 259
 260   def test_html_no_opengraph_properties
 261     r = RichText.new("html", "foo <a href='https://example.com/'>bar</a> baz")
 262     assert_nil r.image
 263     assert_nil r.image_alt
 264     assert_nil r.description
 265   end
 266
 267   def test_markdown_no_image
 268     r = RichText.new("markdown", "foo [bar](https://example.com/) baz")
 269     assert_nil r.image
 270     assert_nil r.image_alt
 271   end
 272
 273   def test_markdown_image
 274     r = RichText.new("markdown", "foo ![bar](https://example.com/image.jpg) baz")
 275     assert_equal "https://example.com/image.jpg", r.image
 276     assert_equal "bar", r.image_alt
 277   end
 278
 279   def test_markdown_first_image
 280     r = RichText.new("markdown", "foo ![bar1](https://example.com/image1.jpg) baz\nfoo ![bar2](https://example.com/image2.jpg) baz")
 281     assert_equal "https://example.com/image1.jpg", r.image
 282     assert_equal "bar1", r.image_alt
 283   end
 284
 285   def test_markdown_image_with_empty_src
 286     r = RichText.new("markdown", "![invalid]()")
 287     assert_nil r.image
 288     assert_nil r.image_alt
 289   end
 290
 291   def test_markdown_skip_image_with_empty_src
 292     r = RichText.new("markdown", "![invalid]() ![valid](https://example.com/valid.gif)")
 293     assert_equal "https://example.com/valid.gif", r.image
 294     assert_equal "valid", r.image_alt
 295   end
 296
 297   def test_markdown_html_image
 298     r = RichText.new("markdown", "<img src='https://example.com/img_element.png' alt='alt text here'>")
 299     assert_equal "https://example.com/img_element.png", r.image
 300     assert_equal "alt text here", r.image_alt
 301   end
 302
 303   def test_markdown_html_image_without_alt
 304     r = RichText.new("markdown", "<img src='https://example.com/img_element.png'>")
 305     assert_equal "https://example.com/img_element.png", r.image
 306     assert_nil r.image_alt
 307   end
 308
 309   def test_markdown_html_image_with_empty_src
 310     r = RichText.new("markdown", "<img src='' alt='forgot src'>")
 311     assert_nil r.image
 312     assert_nil r.image_alt
 313   end
 314
 315   def test_markdown_skip_html_image_with_empty_src
 316     r = RichText.new("markdown", "<img src='' alt='forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
 317     assert_equal "https://example.com/next_img_element.png", r.image
 318     assert_equal "have src", r.image_alt
 319   end
 320
 321   def test_markdown_html_image_without_src
 322     r = RichText.new("markdown", "<img alt='totally forgot src'>")
 323     assert_nil r.image
 324     assert_nil r.image_alt
 325   end
 326
 327   def test_markdown_skip_html_image_without_src
 328     r = RichText.new("markdown", "<img alt='totally forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
 329     assert_equal "https://example.com/next_img_element.png", r.image
 330     assert_equal "have src", r.image_alt
 331   end
 332
 333   def test_markdown_no_description
 334     r = RichText.new("markdown", "#Nope")
 335     assert_nil r.description
 336   end
 337
 338   def test_markdown_description
 339     r = RichText.new("markdown", "This is an article about something.")
 340     assert_equal "This is an article about something.", r.description
 341   end
 342
 343   def test_markdown_description_after_heading
 344     r = RichText.new("markdown", "#Heading\n\nHere starts the text.")
 345     assert_equal "Here starts the text.", r.description
 346   end
 347
 348   def test_markdown_description_after_image
 349     r = RichText.new("markdown", "![bar](https://example.com/image.jpg)\n\nThis is below the image.")
 350     assert_equal "This is below the image.", r.description
 351   end
 352
 353   def test_markdown_description_only_first_paragraph
 354     r = RichText.new("markdown", "This thing.\n\nMaybe also that thing.")
 355     assert_equal "This thing.", r.description
 356   end
 357
 358   def test_markdown_description_elements
 359     r = RichText.new("markdown", "*Something* **important** [here](https://example.com/).")
 360     assert_equal "Something important here.", r.description
 361   end
 362
 363   def test_markdown_html_description
 364     r = RichText.new("markdown", "<p>Can use HTML tags.</p>")
 365     assert_equal "Can use HTML tags.", r.description
 366   end
 367
 368   def test_markdown_description_max_length
 369     r = RichText.new("markdown", "x" * RichText::MAX_DESCRIPTION_LENGTH)
 370     assert_equal "x" * RichText::MAX_DESCRIPTION_LENGTH, r.description
 371
 372     r = RichText.new("markdown", "y" * (RichText::MAX_DESCRIPTION_LENGTH + 1))
 373     assert_equal "#{'y' * (RichText::MAX_DESCRIPTION_LENGTH - 3)}...", r.description
 374
 375     r = RichText.new("markdown", "*zzzzzzzzz*z" * ((RichText::MAX_DESCRIPTION_LENGTH + 1) / 10.0).ceil)
 376     assert_equal "#{'z' * (RichText::MAX_DESCRIPTION_LENGTH - 3)}...", r.description
 377   end
 378
 379   private
 380
 381   def assert_html(richtext, &block)
 382     html = richtext.to_html
 383     assert_predicate html, :html_safe?
 384     root = Nokogiri::HTML::DocumentFragment.parse(html)
 385     assert_select root, "*" do
 386       yield block
 387     end
 388   end
 389 end