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_linkify
 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   end
 232
 233   def test_text_to_html_email
 234     r = RichText.new("text", "foo example@example.com bar")
 235     assert_html r do
 236       assert_select "a", 0
 237     end
 238   end
 239
 240   def test_text_to_html_escape
 241     r = RichText.new("text", "foo < bar & baz > qux")
 242     assert_html r do
 243       assert_select "p", "foo < bar & baz > qux"
 244     end
 245   end
 246
 247   def test_text_to_text
 248     r = RichText.new("text", "foo http://example.com/ bar")
 249     assert_equal "foo http://example.com/ bar", r.to_text
 250   end
 251
 252   def test_text_spam_score
 253     r = RichText.new("text", "foo http://example.com/ bar")
 254     assert_equal 141, r.spam_score.round
 255   end
 256
 257   def test_text_no_opengraph_properties
 258     r = RichText.new("text", "foo https://example.com/ bar")
 259     assert_nil r.image
 260     assert_nil r.image_alt
 261     assert_nil r.description
 262   end
 263
 264   def test_html_no_opengraph_properties
 265     r = RichText.new("html", "foo <a href='https://example.com/'>bar</a> baz")
 266     assert_nil r.image
 267     assert_nil r.image_alt
 268     assert_nil r.description
 269   end
 270
 271   def test_markdown_no_image
 272     r = RichText.new("markdown", "foo [bar](https://example.com/) baz")
 273     assert_nil r.image
 274     assert_nil r.image_alt
 275   end
 276
 277   def test_markdown_image
 278     r = RichText.new("markdown", "foo ![bar](https://example.com/image.jpg) baz")
 279     assert_equal "https://example.com/image.jpg", r.image
 280     assert_equal "bar", r.image_alt
 281   end
 282
 283   def test_markdown_first_image
 284     r = RichText.new("markdown", "foo ![bar1](https://example.com/image1.jpg) baz\nfoo ![bar2](https://example.com/image2.jpg) baz")
 285     assert_equal "https://example.com/image1.jpg", r.image
 286     assert_equal "bar1", r.image_alt
 287   end
 288
 289   def test_markdown_image_with_empty_src
 290     r = RichText.new("markdown", "![invalid]()")
 291     assert_nil r.image
 292     assert_nil r.image_alt
 293   end
 294
 295   def test_markdown_skip_image_with_empty_src
 296     r = RichText.new("markdown", "![invalid]() ![valid](https://example.com/valid.gif)")
 297     assert_equal "https://example.com/valid.gif", r.image
 298     assert_equal "valid", r.image_alt
 299   end
 300
 301   def test_markdown_html_image
 302     r = RichText.new("markdown", "<img src='https://example.com/img_element.png' alt='alt text here'>")
 303     assert_equal "https://example.com/img_element.png", r.image
 304     assert_equal "alt text here", r.image_alt
 305   end
 306
 307   def test_markdown_html_image_without_alt
 308     r = RichText.new("markdown", "<img src='https://example.com/img_element.png'>")
 309     assert_equal "https://example.com/img_element.png", r.image
 310     assert_nil r.image_alt
 311   end
 312
 313   def test_markdown_html_image_with_empty_src
 314     r = RichText.new("markdown", "<img src='' alt='forgot src'>")
 315     assert_nil r.image
 316     assert_nil r.image_alt
 317   end
 318
 319   def test_markdown_skip_html_image_with_empty_src
 320     r = RichText.new("markdown", "<img src='' alt='forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
 321     assert_equal "https://example.com/next_img_element.png", r.image
 322     assert_equal "have src", r.image_alt
 323   end
 324
 325   def test_markdown_html_image_without_src
 326     r = RichText.new("markdown", "<img alt='totally forgot src'>")
 327     assert_nil r.image
 328     assert_nil r.image_alt
 329   end
 330
 331   def test_markdown_skip_html_image_without_src
 332     r = RichText.new("markdown", "<img alt='totally forgot src'> <img src='https://example.com/next_img_element.png' alt='have src'>")
 333     assert_equal "https://example.com/next_img_element.png", r.image
 334     assert_equal "have src", r.image_alt
 335   end
 336
 337   def test_markdown_no_description
 338     r = RichText.new("markdown", "#Nope")
 339     assert_nil r.description
 340   end
 341
 342   def test_markdown_description
 343     r = RichText.new("markdown", "This is an article about something.")
 344     assert_equal "This is an article about something.", r.description
 345   end
 346
 347   def test_markdown_description_after_heading
 348     r = RichText.new("markdown", "#Heading\n\nHere starts the text.")
 349     assert_equal "Here starts the text.", r.description
 350   end
 351
 352   def test_markdown_description_after_image
 353     r = RichText.new("markdown", "![bar](https://example.com/image.jpg)\n\nThis is below the image.")
 354     assert_equal "This is below the image.", r.description
 355   end
 356
 357   def test_markdown_description_only_first_paragraph
 358     r = RichText.new("markdown", "This thing.\n\nMaybe also that thing.")
 359     assert_equal "This thing.", r.description
 360   end
 361
 362   def test_markdown_description_elements
 363     r = RichText.new("markdown", "*Something* **important** [here](https://example.com/).")
 364     assert_equal "Something important here.", r.description
 365   end
 366
 367   def test_markdown_html_description
 368     r = RichText.new("markdown", "<p>Can use HTML tags.</p>")
 369     assert_equal "Can use HTML tags.", r.description
 370   end
 371
 372   def test_markdown_description_max_length
 373     r = RichText.new("markdown", "x" * RichText::MAX_DESCRIPTION_LENGTH)
 374     assert_equal "x" * RichText::MAX_DESCRIPTION_LENGTH, r.description
 375
 376     r = RichText.new("markdown", "y" * (RichText::MAX_DESCRIPTION_LENGTH + 1))
 377     assert_equal "#{'y' * (RichText::MAX_DESCRIPTION_LENGTH - 3)}...", r.description
 378
 379     r = RichText.new("markdown", "*zzzzzzzzz*z" * ((RichText::MAX_DESCRIPTION_LENGTH + 1) / 10.0).ceil)
 380     assert_equal "#{'z' * (RichText::MAX_DESCRIPTION_LENGTH - 3)}...", r.description
 381   end
 382
 383   private
 384
 385   def assert_html(richtext, &block)
 386     html = richtext.to_html
 387     assert_predicate html, :html_safe?
 388     root = Nokogiri::HTML::DocumentFragment.parse(html)
 389     assert_select root, "*" do
 390       yield block
 391     end
 392   end
 393 end