451 lines
16 KiB
Ruby
451 lines
16 KiB
Ruby
require "rails_helper"
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RSpec.describe MarkdownProcessor::Parser, type: :service do
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let(:random_word) { Faker::Lorem.word }
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let(:basic_parsed_markdown) { described_class.new(random_word) }
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def generate_and_parse_markdown(raw_markdown)
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described_class.new(raw_markdown).finalize
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end
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it "renders plain text as-is" do
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expect(basic_parsed_markdown.finalize).to include(random_word)
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end
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it "escapes liquid tags in codeblock" do
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code_block = "```\n{% what %}\n```"
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expect(generate_and_parse_markdown(code_block)).to include("{% what %}")
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end
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it "escapes the `raw` Liquid tag in codeblocks" do
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code_block = "```\n{% raw %}some text{% endraw %}\n```"
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expect(generate_and_parse_markdown(code_block)).to include("{% raw %}", "{% endraw %}")
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end
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it "does not allow button tag" do
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button = "<button>no</button>"
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expect(generate_and_parse_markdown(button)).not_to include("button")
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end
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it "does not render the escaped dashes when using a `raw` Liquid tag in codeblocks with syntax highlighting" do
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code_block = "```js\n{% raw %}some text{% endraw %}\n```"
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expect(generate_and_parse_markdown(code_block)).not_to include("----")
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end
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it "escapes some triple backticks within a codeblock when using tildes" do
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code_block = "~~~\nhello\n// ```\nwhatever\n// ```\n~~~"
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number_of_triple_backticks = generate_and_parse_markdown(code_block).scan("```").count
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expect(number_of_triple_backticks).to eq(2)
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end
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# TODO: @zhao-andy this should fail if this issue is solved: https://github.com/forem/forem/issues/13823
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it "escapes triple backticks within a codeblock when using tildes" do
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code_block = "~~~\nhello\n```\nwhatever\n```\n~~~"
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number_of_triple_backticks = generate_and_parse_markdown(code_block).scan("```").count
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expect(number_of_triple_backticks).to eq(0)
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end
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it "does not remove the non-'raw tag related' four dashes" do
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code_block = "```\n----\n```"
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expect(generate_and_parse_markdown(code_block)).to include("----")
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end
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it "escapes the `raw` Liquid tag in codespans" do
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code_block = "``{% raw %}some text{% endraw %}``"
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expect(generate_and_parse_markdown(code_block)).to include("{% raw %}", "{% endraw %}")
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end
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it "escapes the `raw` Liquid tag in inline code" do
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code_block = "`{% raw %}some text{% endraw %}`"
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expect(generate_and_parse_markdown(code_block)).to include("{% raw %}", "{% endraw %}")
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end
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it "escapes codeblocks in numbered lists" do
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code_block = <<~CODE_BLOCK
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1. Define your hooks in config file `lefthook.yml`
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```yaml
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pre-push:
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parallel: true
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commands:
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rubocop:
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run: bundle exec rspec --fail-fast
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```
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CODE_BLOCK
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escaped_codeblock = generate_and_parse_markdown(code_block)
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expect(escaped_codeblock).not_to include("```")
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expect(escaped_codeblock).not_to include("`")
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expect(escaped_codeblock).to include("bundle exec rspec --fail-fast")
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end
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it "escapes liquid tags in code spans" do
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code_span = "``{% what %}``"
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expect(generate_and_parse_markdown(code_span)).to include("{% what %}")
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end
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it "renders double backtick code spans properly" do
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code_span = "``#{random_word}``"
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expect(generate_and_parse_markdown(code_span)).to include random_word
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end
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it "wraps figcaptions with figures" do
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code_span = "<p>Statement</p>\n<figcaption>A fig</figcaption>"
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test = generate_and_parse_markdown("<p>case: </p>#{code_span}")
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expect(test).to eq("<p>case: </p>\n<figure>#{code_span}</figure>\n\n\n\n")
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end
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it "does not wrap figcaptions already in figures" do
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code_span = "<figure><p>Statement</p>\n<figcaption>A fig</figcaption></figure>"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("#{code_span}\n\n\n\n")
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end
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it "does not wrap figcaptions without predecessors" do
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code_span = "<figcaption>A fig</figcaption>"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("#{code_span}\n\n")
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end
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it "converts code tag to triple backticks" do
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content = "<code>\n this is some random code \n</code>"
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code_block_object = described_class.new(content)
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test = code_block_object.convert_code_tags_to_triple_backticks(content)
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expect(test).not_to include("<code>")
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expect(test).not_to include("</code>")
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expect(test).to include("```")
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end
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it "converts multiple code tags to triple backticks" do
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content = "<code>\n this is some random code \n</code>\n\n<code>\n more random code \n</code>"
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code_block_object = described_class.new(content)
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test = code_block_object.convert_code_tags_to_triple_backticks(content)
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expect(test).not_to include("<code>")
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expect(test).not_to include("</code>")
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expect(test).to include("```")
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end
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it "ignores code tag if pre tag is present" do
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content = "<pre>\n<code>\n this is some random code \n</code>\n</pre>"
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code_block_object = described_class.new(content)
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test = code_block_object.convert_code_tags_to_triple_backticks(content)
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expect(test).to include("<pre>\n<code>")
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expect(test).to include("</code>\n</pre>")
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expect(test).not_to include("```")
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end
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it "ignores code tag if tags are inline" do
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content = "<code> this is some random code </code>"
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code_block_object = described_class.new(content)
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test = code_block_object.convert_code_tags_to_triple_backticks(content)
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expect(test).to include("<code>")
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expect(test).to include("</code>")
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expect(test).not_to include("```")
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end
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it "returns original content if code tag is not present" do
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content = "this is some random code"
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code_block_object = described_class.new(content)
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test = code_block_object.convert_code_tags_to_triple_backticks(content)
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expect(test).to be(content)
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end
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it "permits abbr tags" do
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result = generate_and_parse_markdown("<abbr title=\"ol korrect\">OK</abbr>")
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expect(result).to include("<abbr title=\"ol korrect\">OK</abbr>")
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end
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context "when rendering links markdown" do
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# the following specs are testing HTMLRouge
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it "renders properly if protocol http is included" do
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code_span = "[github](http://github.com)"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("<p><a href=\"http://github.com\">github</a></p>\n\n")
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end
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it "renders properly if protocol https is included" do
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code_span = "[github](https://github.com)"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("<p><a href=\"https://github.com\">github</a></p>\n\n")
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end
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it "renders properly if protocol is not included" do
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code_span = "[github](github.com)"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("<p><a href=\"//github.com\">github</a></p>\n\n")
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end
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it "renders properly relative paths" do
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code_span = "[career tag](/t/career)"
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test = generate_and_parse_markdown(code_span)
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app_protocol = ApplicationConfig["APP_PROTOCOL"]
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app_domain = ApplicationConfig["APP_DOMAIN"]
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expect(test).to eq("<p><a href=\"#{app_protocol}#{app_domain}/t/career\">career tag</a></p>\n\n")
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end
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it "renders properly anchored links" do
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code_span = "[Chapter 1](#chapter-1)"
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test = generate_and_parse_markdown(code_span)
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expect(test).to eq("<p><a href=\"#chapter-1\">Chapter 1</a></p>\n\n")
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end
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it "does not render CSS classes" do
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expect(generate_and_parse_markdown("<center class=\"w-100\"></center>"))
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.to exclude("class")
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.and exclude("w-100")
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end
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end
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describe "mentions" do
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let(:user) { build_stubbed(:user) }
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before { allow(User).to receive(:find_by).with(username: user.username).and_return(user) }
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it "works normally" do
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mention = "@#{user.username}"
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result = generate_and_parse_markdown(mention)
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expect(result).to include "<a"
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end
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it "works with underscore" do
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mention = "what was found here _@#{user.username}_ let see"
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result = generate_and_parse_markdown(mention)
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expect(result).to include "<a", "<em"
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end
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it "works in ul/li tag" do
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mention = <<~DOC
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`@#{user.username}` one two, @#{user.username} three four:
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- `@#{user.username}`
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DOC
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result = generate_and_parse_markdown(mention)
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# rubocop:disable Layout/LineLength
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expected_result = "<p><code>@#{user.username}</code> one two, <a class=\"mentioned-user\" " \
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"href=\"#{ApplicationConfig['APP_PROTOCOL']}#{ApplicationConfig['APP_DOMAIN']}/#{user.username}\">" \
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"@#{user.username}</a>\n three four:</p>\n\n<ul>\n<li><code>@#{user.username}</code></li>\n</ul>\n\n"
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# rubocop:enable Layout/LineLength
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expect(result).to eq(expected_result)
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end
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it "will not work in code tag" do
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mention = "this is a chunk of text `@#{user.username}`"
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result = generate_and_parse_markdown(mention)
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expect(result).to include "<code"
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expect(result).not_to include "<a"
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end
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it "works with markdown heavy contents" do
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mention = "test **[link?](https://dev.to/ben/)** thread, @#{user.username} talks :"
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result = generate_and_parse_markdown(mention)
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expect(result).to include "<a class=\"mentioned-user\""
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end
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end
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it "renders a double backtick codespan with a word wrapped in single backticks properly" do
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code_span = "`` `#{random_word}` ``"
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expect(generate_and_parse_markdown(code_span)).to include "`#{random_word}`"
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end
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it "escapes liquid tags in inline code" do
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inline_code = "`{% what %}`"
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expect(generate_and_parse_markdown(inline_code)).to include(inline_code[1..-2])
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end
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context "when checking XSS attempt in markdown content" do
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it "raises an error if XSS attempt detected" do
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expect do
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generate_and_parse_markdown("src='DatA:text/html;base64:xxxx'")
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end.to raise_error(ArgumentError)
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expect do
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generate_and_parse_markdown("src=\"&\"")
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end.to raise_error(ArgumentError)
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end
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it "does not raise error if no XSS attempt detected" do
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expect do
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generate_and_parse_markdown("```const data = 'data:text/html';```")
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end.not_to raise_error
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end
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end
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context "when provided with an @username" do
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it "links to a user if user exist" do
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username = create(:user).username
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with_user = "@#{username}"
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html = Nokogiri::HTML(generate_and_parse_markdown(with_user))
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expect(html.search("a").to_s).to include("/#{username}")
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end
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it "doesn't link to a user if user doesn't exist" do
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with_user = "@#{random_word}"
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html = Nokogiri::HTML(generate_and_parse_markdown(with_user))
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expect(html.search("a")).to be_empty
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end
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end
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context "when provided with nested links" do
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it "does not generated nested link tags" do
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nested_links = generate_and_parse_markdown("[[](http://b)](http://a)")
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nested_links = Nokogiri::HTML(nested_links).at("p").inner_html
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expect(nested_links).to eq('[<a href="http://b"></a>](<a href="http://a">http://a</a>)')
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end
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end
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context "when provided with liquid tags" do
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it "does not raises error if liquid tag was used incorrectly" do
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bad_ltag = "{% #{random_word} %}"
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expect { generate_and_parse_markdown(bad_ltag) }.not_to raise_error
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end
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end
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context "when provided with kbd tag" do
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it "leaves the kbd tag in place" do
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inline_kbd = generate_and_parse_markdown("<kbd>Ctrl</kbd> + <kbd>,</kbd>")
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inline_kbd = Nokogiri::HTML(inline_kbd).at("p").inner_html
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expect(inline_kbd).to eq("<kbd>Ctrl</kbd> + <kbd>,</kbd>")
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end
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end
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describe "#tags_used" do
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let(:parsed_markdown) { described_class.new("{% youtube oHg5SJYRHA0 %}") }
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it "returns empty if no tag was used" do
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expect(basic_parsed_markdown.tags_used).to eq([])
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end
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it "return tags used if it was used" do
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expect(parsed_markdown.tags_used).to eq([YoutubeTag])
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end
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end
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context "when using gifs from Giphy as images" do
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let(:giphy_markdown_texts) do
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%w(
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)
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end
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it "does not wrap giphy images with Cloudinary" do
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giphy_markdown_texts.each do |body_markdown|
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html = Nokogiri::HTML(generate_and_parse_markdown(body_markdown))
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img_src = html.search("img")[0]["src"]
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expect(img_src).not_to include("https://res.cloudinary.com")
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end
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end
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it "uses the raw gif from i.giphy.com" do
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giphy_markdown_texts.each do |body_markdown|
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html = Nokogiri::HTML(generate_and_parse_markdown(body_markdown))
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img_src = html.search("img")[0]["src"]
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expect(img_src).to start_with("https://i.giphy.com")
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end
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end
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end
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context "when an image is used" do
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let(:markdown_with_img) { "" }
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it "wraps image in link" do
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expect(generate_and_parse_markdown(markdown_with_img)).to include("<a")
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end
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it "wraps the image with Cloudinary", cloudinary: true do
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expect(generate_and_parse_markdown(markdown_with_img))
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.to include("https://res.cloudinary.com")
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end
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end
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context "when a colon emoji is used" do
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it "doesn't change text in codeblock" do
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result = generate_and_parse_markdown("<span>:o:<code>:o:</code>:o:<code>:o:</code>:o:<span>:o:</span>:o:</span>")
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expect(result).to include("<span>⭕<code>:o:</code>⭕<code>:o:</code>⭕<span>⭕</span>⭕</span>")
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end
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end
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context "when using Liquid variables" do
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it "prevents Liquid variables" do
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expect { generate_and_parse_markdown("{{ 'something' }}") }.to raise_error(StandardError)
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end
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it "allows Liquid variables in codeblocks" do
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expect { generate_and_parse_markdown("```\n{{ 'something' }}\n```") }.not_to raise_error
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end
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it "renders the text in the codeblock properly" do
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result = generate_and_parse_markdown("```\n{{ 'something' }}\n```")
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expect(result).to include("{{ 'something' }}")
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end
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it "allows Liquid variables within inline code" do
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expect { generate_and_parse_markdown("`{{ 'something' }}`") }.not_to raise_error
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end
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it "renders the inline code with the text properly" do
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result = generate_and_parse_markdown("`{{ 'something' }}`")
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expect(result).to include("{{ 'something' }}")
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end
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it "renders nested lists without linebreaks" do
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result = generate_and_parse_markdown("- [A](#a)\n - [B](#b)\n- [C](#c)")
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expect(result).not_to include("<br>")
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end
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end
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context "when word as snake case" do
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it "doesn't change word" do
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code_block = "word_italic_"
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expect(generate_and_parse_markdown(code_block)).to include("word_italic_")
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end
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end
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context "when double underline" do
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it "renders italic" do
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code_block = "word__italic__"
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expect(generate_and_parse_markdown(code_block)).to include("word_<em>italic</em>_")
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end
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end
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context "when adding syntax highlighting" do
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it "defaults to plaintext" do
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code_block = "```\ntext\n````"
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expect(generate_and_parse_markdown(code_block)).to include("highlight plaintext")
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end
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it "adds correct syntax highlighting to codeblocks when the hint is not lowercase" do
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code_block = "```Ada\nwith Ada.Directories;\n````"
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expect(generate_and_parse_markdown(code_block)).to include("highlight ada")
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end
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it "adds correct syntax highlighting to codeblocks when the hint is lowercase" do
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code_block = "```ada\nwith Ada.Directories;\n````"
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expect(generate_and_parse_markdown(code_block)).to include("highlight ada")
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end
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end
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context "when using a valid attribute" do
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let(:example_text) { "{% liquid example %}" }
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it "prevents the attribute from having Liquid tags inside" do
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text = '<img src="x" alt="{% 404/404#">%}'
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expect(generate_and_parse_markdown(text)).to exclude("{%")
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end
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it "does not scrub attributes in inline code" do
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inline_code = "`#{example_text}`"
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expect(generate_and_parse_markdown(inline_code)).to include(example_text)
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double_fenced_code = "``#{example_text}``"
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expect(generate_and_parse_markdown(double_fenced_code)).to include(example_text)
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end
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it "does not scrub attributes in codeblocks" do
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codeblock = "```\n#{example_text}\n```"
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expect(generate_and_parse_markdown(codeblock)).to include("{%")
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expect(generate_and_parse_markdown(codeblock)).to include("%}")
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end
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end
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end
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