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9d737d894d
* FIX: Don't diplay character reference in HTML diffs Before this change, HTML escaping was done before splitting text into tokens, so token splitter saw literals like "'", and split them as it was normal text into parts into ["&", "#", "39", ";"]. This caused diff to display character references, as those tokens used separate HTML tags to display their insertion/deletion status. * Avoid making one element arrays while generating diffs
147 lines
7.4 KiB
Ruby
147 lines
7.4 KiB
Ruby
require 'rails_helper'
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require 'discourse_diff'
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describe DiscourseDiff do
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describe "inline_html" do
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it "does not lead to XSS" do
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a = "<test>start</test>"
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b = "<test>end</test>"
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prev = "<div>#{CGI::escapeHTML(a)}</div>"
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cur = "<div>#{CGI::escapeHTML(b)}</div>"
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diff = DiscourseDiff.new(prev,cur)
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expect(diff.inline_html).not_to match(/<\/?test>/)
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expect(diff.side_by_side_html).not_to match(/<\/?test>/)
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end
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it "returns an empty div when no content is diffed" do
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expect(DiscourseDiff.new("", "").inline_html).to eq("<div class=\"inline-diff\"></div>")
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end
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it "returns the diffed content when there is no difference" do
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before = after = "<p>this is a paragraph</p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p>this is a paragraph</p></div>")
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end
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it "adds <ins> tags around added text" do
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before = "<p>this is a paragraph</p>"
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after = "<p>this is a great paragraph</p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p>this is a <ins>great </ins>paragraph</p></div>")
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end
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it "adds <del> tags around removed text" do
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before = "<p>this is a great paragraph</p>"
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after = "<p>this is a paragraph</p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p>this is a <del>great </del>paragraph</p></div>")
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end
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it "adds .diff-ins class when a paragraph is added" do
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before = "<p>this is the first paragraph</p>"
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after = "<p>this is the first paragraph</p><p>this is the second paragraph</p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p>this is the first paragraph</p><p class=\"diff-ins\">this is the second paragraph</p></div>")
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end
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it "adds .diff-del class when a paragraph is removed" do
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before = "<p>this is the first paragraph</p><p>this is the second paragraph</p>"
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after = "<p>this is the second paragraph</p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p class=\"diff-del\">this is the first paragraph</p><p>this is the second paragraph</p></div>")
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end
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it "does not break diff on character references" do
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before = "<p>'</p>"
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after = "<p></p>"
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expect(DiscourseDiff.new(before, after).inline_html).to eq("<div class=\"inline-diff\"><p><del>'</del></p></div>")
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end
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end
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describe "side_by_side_html" do
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it "returns two empty divs when no content is diffed" do
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expect(DiscourseDiff.new("", "").side_by_side_html).to eq("<div class=\"span8\"></div><div class=\"span8 offset1\"></div>")
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end
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it "returns the diffed content on both sides when there is no difference" do
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before = after = "<p>this is a paragraph</p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p>this is a paragraph</p></div><div class=\"span8 offset1\"><p>this is a paragraph</p></div>")
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end
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it "adds <ins> tags around added text on the right div" do
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before = "<p>this is a paragraph</p>"
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after = "<p>this is a great paragraph</p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p>this is a paragraph</p></div><div class=\"span8 offset1\"><p>this is a <ins>great </ins>paragraph</p></div>")
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end
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it "adds <del> tags around removed text on the left div" do
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before = "<p>this is a great paragraph</p>"
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after = "<p>this is a paragraph</p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p>this is a <del>great </del>paragraph</p></div><div class=\"span8 offset1\"><p>this is a paragraph</p></div>")
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end
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it "adds .diff-ins class when a paragraph is added" do
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before = "<p>this is the first paragraph</p>"
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after = "<p>this is the first paragraph</p><p>this is the second paragraph</p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p>this is the first paragraph</p></div><div class=\"span8 offset1\"><p>this is the first paragraph</p><p class=\"diff-ins\">this is the second paragraph</p></div>")
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end
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it "adds .diff-del class when a paragraph is removed" do
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before = "<p>this is the first paragraph</p><p>this is the second paragraph</p>"
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after = "<p>this is the second paragraph</p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p class=\"diff-del\">this is the first paragraph</p><p>this is the second paragraph</p></div><div class=\"span8 offset1\"><p>this is the second paragraph</p></div>")
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end
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it "does not break diff on character references" do
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before = "<p>'</p>"
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after = "<p></p>"
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expect(DiscourseDiff.new(before, after).side_by_side_html).to eq("<div class=\"span8\"><p><del>'</del></p></div><div class=\"span8 offset1\"><p></p></div>")
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end
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end
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describe "side_by_side_markdown" do
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it "returns an empty table when no content is diffed" do
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expect(DiscourseDiff.new("", "").side_by_side_markdown).to eq("<table class=\"markdown\"></table>")
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end
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it "properly escape html tags" do
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before = ""
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after = "<img src=\"//domain.com/image.png>\""
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td></td><td class=\"diff-ins\"><img src="//domain.com/image.png>"</td></tr></table>")
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end
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it "returns the diffed content on both columns when there is no difference" do
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before = after = "this is a paragraph"
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td>this is a paragraph</td><td>this is a paragraph</td></tr></table>")
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end
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it "adds <ins> tags around added text on the second column" do
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before = "this is a paragraph"
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after = "this is a great paragraph"
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td class=\"diff-del\">this is a paragraph</td><td class=\"diff-ins\">this is a <ins>great </ins>paragraph</td></tr></table>")
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end
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it "adds <del> tags around removed text on the first column" do
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before = "this is a great paragraph"
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after = "this is a paragraph"
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td class=\"diff-del\">this is a <del>great </del>paragraph</td><td class=\"diff-ins\">this is a paragraph</td></tr></table>")
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end
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it "adds .diff-ins class when a paragraph is added" do
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before = "this is the first paragraph"
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after = "this is the first paragraph\nthis is the second paragraph"
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td class=\"diff-del\">this is the first paragraph</td><td class=\"diff-ins\">this is the first paragraph<ins>\nthis is the second paragraph</ins></td></tr></table>")
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end
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it "adds .diff-del class when a paragraph is removed" do
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before = "this is the first paragraph\nthis is the second paragraph"
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after = "this is the second paragraph"
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expect(DiscourseDiff.new(before, after).side_by_side_markdown).to eq("<table class=\"markdown\"><tr><td class=\"diff-del\">this is the first paragraph\n</td><td></td></tr><tr><td>this is the second paragraph</td><td>this is the second paragraph</td></tr></table>")
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end
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end
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end
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