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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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+<!doctype html>
+<html>
+<head>
+ <meta charset="utf-8">
+ <title>Test for CSS parser diagnostics escaping unprintable
+ characters correctly</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" href="/tests/SimpleTest/test.css">
+</head>
+<body>
+<a target="_blank"
+ href="https://bugzilla.mozilla.org/show_bug.cgi?id=229827"
+>Mozilla Bug 229827</a>
+<style id="testbench"></style>
+<script type="application/javascript;version=1.8">
+// This test has intimate knowledge of how to get the CSS parser to
+// emit diagnostics that contain text under control of the user.
+// That's not the point of the test, though; the point is only that
+// *that text* is properly escaped.
+
+// There is one "pattern" for each code path through the error reporter
+// that might need to escape some kind of user-supplied text.
+// Each "pattern" is tested once with each of the "substitution"s below:
+// <t>, <i>, and <s> are replaced by the t:, i:, and s: fields of
+// each substitution object in turn.
+const patterns = [
+ // REPORT_UNEXPECTED_P (only ever used in contexts where identifier-like
+ // escaping is appropriate)
+ { i: "<t>|x{}", o: "prefix \u2018<i>\u2019" },
+ // REPORT_UNEXPECTED_TOKEN with:
+ // _Ident
+ { i: "@namespace fnord <t>;", o: "within @namespace: \u2018<i>\u2019" },
+ // _Ref
+ { i: "@namespace fnord #<t>;", o: "within @namespace: \u2018#<i>\u2019" },
+ // _Function
+ { i: "@namespace fnord <t>();", o: "within @namespace: \u2018<i>(\u2019" },
+ // _Dimension
+ { i: "@namespace fnord 14<t>;", o: "within @namespace: \u201814<i>\u2019" },
+ // _AtKeyword
+ { i: "x{@<t>: }", o: "declaration but found \u2018@<i>\u2019." },
+ // _String
+ { i: "x{ '<t>'}" , o: "declaration but found \u2018'<s>'\u2019." },
+ // _Bad_String
+ { i: "x{ '<t>\n}", o: "declaration but found \u2018'<s>\u2019." },
+ // _URL
+ { i: "x{ url('<t>')}", o: "declaration but found \u2018url('<s>')\u2019." },
+ // _Bad_URL
+ { i: "x{ url('<t>'.)}" , o: "declaration but found \u2018url('<s>'\u2019." }
+];
+
+// Blocks of characters to test, and how they should be escaped when
+// they appear in identifiers and string constants.
+const substitutions = [
+ // ASCII printables that _can_ normally appear in identifiers,
+ // so should of course _not_ be escaped.
+ { t: "-_0123456789", i: "-_0123456789",
+ s: "-_0123456789" },
+ { t: "abcdefghijklmnopqrstuvwxyz", i: "abcdefghijklmnopqrstuvwxyz",
+ s: "abcdefghijklmnopqrstuvwxyz" },
+ { t: "ABCDEFGHIJKLMNOPQRSTUVWXYZ", i: "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+ s: "ABCDEFGHIJKLMNOPQRSTUVWXYZ" },
+
+ // ASCII printables that are not normally valid as the first character
+ // of an identifier, or the character immediately after a leading dash,
+ // but can be forced into that position with escapes.
+ { t: "\\-", i: "\\-", s: "-" },
+ { t: "\\30 ", i: "\\30 ", s: "0" },
+ { t: "\\31 ", i: "\\31 ", s: "1" },
+ { t: "\\32 ", i: "\\32 ", s: "2" },
+ { t: "\\33 ", i: "\\33 ", s: "3" },
+ { t: "\\34 ", i: "\\34 ", s: "4" },
+ { t: "\\35 ", i: "\\35 ", s: "5" },
+ { t: "\\36 ", i: "\\36 ", s: "6" },
+ { t: "\\37 ", i: "\\37 ", s: "7" },
+ { t: "\\38 ", i: "\\38 ", s: "8" },
+ { t: "\\39 ", i: "\\39 ", s: "9" },
+ { t: "-\\-", i: "--", s: "--" },
+ { t: "-\\30 ", i: "-\\30 ", s: "-0" },
+ { t: "-\\31 ", i: "-\\31 ", s: "-1" },
+ { t: "-\\32 ", i: "-\\32 ", s: "-2" },
+ { t: "-\\33 ", i: "-\\33 ", s: "-3" },
+ { t: "-\\34 ", i: "-\\34 ", s: "-4" },
+ { t: "-\\35 ", i: "-\\35 ", s: "-5" },
+ { t: "-\\36 ", i: "-\\36 ", s: "-6" },
+ { t: "-\\37 ", i: "-\\37 ", s: "-7" },
+ { t: "-\\38 ", i: "-\\38 ", s: "-8" },
+ { t: "-\\39 ", i: "-\\39 ", s: "-9" },
+
+ // ASCII printables that must be escaped in identifiers.
+ // Most of these should not be escaped in strings.
+ { t: "\\!\\\"\\#\\$", i: "\\!\\\"\\#\\$", s: "!\\\"#$" },
+ { t: "\\%\\&\\'\\(", i: "\\%\\&\\'\\(", s: "%&\\'(" },
+ { t: "\\)\\*\\+\\,", i: "\\)\\*\\+\\,", s: ")*+," },
+ { t: "\\.\\/\\:\\;", i: "\\.\\/\\:\\;", s: "./:;" },
+ { t: "\\<\\=\\>\\?", i: "\\<\\=\\>\\?", s: "<=>?", },
+ { t: "\\@\\[\\\\\\]", i: "\\@\\[\\\\\\]", s: "@[\\\\]" },
+ { t: "\\^\\`\\{\\}\\~", i: "\\^\\`\\{\\}\\~", s: "^`{}~" },
+
+ // U+0000 - U+0020 (C0 controls, space)
+ // U+000A LINE FEED, U+000C FORM FEED, and U+000D CARRIAGE RETURN
+ // cannot be put into a CSS token as escaped literal characters, so
+ // we do them with hex escapes instead.
+ // The parser replaces U+0000 with U+FFFD.
+ { t: "\\\x00\\\x01\\\x02\\\x03", i: "�\\1 \\2 \\3 ",
+ s: "�\\1 \\2 \\3 " },
+ { t: "\\\x04\\\x05\\\x06\\\x07", i: "\\4 \\5 \\6 \\7 ",
+ s: "\\4 \\5 \\6 \\7 " },
+ { t: "\\\x08\\\x09\\000A\\\x0B", i: "\\8 \\9 \\a \\b ",
+ s: "\\8 \\9 \\a \\b " },
+ { t: "\\000C\\000D\\\x0E\\\x0F", i: "\\c \\d \\e \\f ",
+ s: "\\c \\d \\e \\f " },
+ { t: "\\\x10\\\x11\\\x12\\\x13", i: "\\10 \\11 \\12 \\13 ",
+ s: "\\10 \\11 \\12 \\13 " },
+ { t: "\\\x14\\\x15\\\x16\\\x17", i: "\\14 \\15 \\16 \\17 ",
+ s: "\\14 \\15 \\16 \\17 " },
+ { t: "\\\x18\\\x19\\\x1A\\\x1B", i: "\\18 \\19 \\1a \\1b ",
+ s: "\\18 \\19 \\1a \\1b " },
+ { t: "\\\x1C\\\x1D\\\x1E\\\x1F\\ ", i: "\\1c \\1d \\1e \\1f \\ ",
+ s: "\\1c \\1d \\1e \\1f " },
+
+ // U+007F (DELETE) and U+0080 - U+009F (C1 controls)
+ { t: "\\\x7f\\\x80\\\x81\\\x82", i: "\\7f \\80 \\81 \\82 ",
+ s: "\\7f \\80 \\81 \\82 " },
+ { t: "\\\x83\\\x84\\\x85\\\x86", i: "\\83 \\84 \\85 \\86 ",
+ s: "\\83 \\84 \\85 \\86 " },
+ { t: "\\\x87\\\x88\\\x89\\\x8A", i: "\\87 \\88 \\89 \\8a ",
+ s: "\\87 \\88 \\89 \\8a " },
+ { t: "\\\x8B\\\x8C\\\x8D\\\x8E", i: "\\8b \\8c \\8d \\8e ",
+ s: "\\8b \\8c \\8d \\8e " },
+ { t: "\\\x8F\\\x90\\\x91\\\x92", i: "\\8f \\90 \\91 \\92 ",
+ s: "\\8f \\90 \\91 \\92 " },
+ { t: "\\\x93\\\x94\\\x95\\\x96", i: "\\93 \\94 \\95 \\96 ",
+ s: "\\93 \\94 \\95 \\96 " },
+ { t: "\\\x97\\\x98\\\x99\\\x9A", i: "\\97 \\98 \\99 \\9a ",
+ s: "\\97 \\98 \\99 \\9a " },
+ { t: "\\\x9B\\\x9C\\\x9D\\\x9E\\\x9F", i: "\\9b \\9c \\9d \\9e \\9f ",
+ s: "\\9b \\9c \\9d \\9e \\9f " },
+
+ // CSS doesn't bother with the full Unicode rules for identifiers,
+ // instead declaring that any code point greater than or equal to
+ // U+00A0 is a valid identifier character. Test a small handful
+ // of both basic and astral plane characters.
+
+ // Arabic (caution to editors: there is a possibly-invisible U+200E
+ // LEFT-TO-RIGHT MARK in each string, just before the close quote)
+ { t: "أبجدهوزحطيكلمنسعفصقرشتثخذضظغ‎",
+ i: "أبجدهوزحطيكلمنسعفصقرشتثخذضظغ‎",
+ s: "أبجدهوزحطيكلمنسعفصقرشتثخذضظغ‎" },
+
+ // Box drawing
+ { t: "─│┌┐└┘├┤┬┴┼╭╮╯╰╴╵╶╷",
+ i: "─│┌┐└┘├┤┬┴┼╭╮╯╰╴╵╶╷",
+ s: "─│┌┐└┘├┤┬┴┼╭╮╯╰╴╵╶╷" },
+
+ // CJK Unified Ideographs
+ { t: "一丁丂七丄丅丆万丈三上下丌不与丏",
+ i: "一丁丂七丄丅丆万丈三上下丌不与丏",
+ s: "一丁丂七丄丅丆万丈三上下丌不与丏" },
+
+ // CJK Unified Ideographs Extension B (astral)
+ { t: "𠀀𠀁𠀂𠀃𠀄𠀅𠀆𠀇𠀈𠀉𠀊𠀋𠀌𠀍𠀎𠀏",
+ i: "𠀀𠀁𠀂𠀃𠀄𠀅𠀆𠀇𠀈𠀉𠀊𠀋𠀌𠀍𠀎𠀏",
+ s: "𠀀𠀁𠀂𠀃𠀄𠀅𠀆𠀇𠀈𠀉𠀊𠀋𠀌𠀍𠀎𠀏" },
+
+ // Devanagari
+ { t: "कखगघङचछजझञटठडढणतथदधनपफबभमयरलळवशषसह",
+ i: "कखगघङचछजझञटठडढणतथदधनपफबभमयरलळवशषसह",
+ s: "कखगघङचछजझञटठडढणतथदधनपफबभमयरलळवशषसह" },
+
+ // Emoticons (astral)
+ { t: "😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐",
+ i: "😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐",
+ s: "😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐" },
+
+ // Greek
+ { t: "αβγδεζηθικλμνξοπρςστυφχψω",
+ i: "αβγδεζηθικλμνξοπρςστυφχψω",
+ s: "αβγδεζηθικλμνξοπρςστυφχψω" }
+];
+
+const npatterns = patterns.length;
+const nsubstitutions = substitutions.length;
+
+function quotemeta(str) {
+ return str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
+}
+function subst(str, sub) {
+ return str.replace("<t>", sub.t)
+ .replace("<i>", sub.i)
+ .replace("<s>", sub.s);
+}
+
+var curpat = 0;
+var cursubst = -1;
+var testbench = document.getElementById("testbench");
+
+function nextTest() {
+ cursubst++;
+ if (cursubst == nsubstitutions) {
+ curpat++;
+ cursubst = 0;
+ }
+ if (curpat == npatterns) {
+ SimpleTest.finish();
+ return;
+ }
+
+ let css = subst(patterns[curpat].i, substitutions[cursubst]);
+ let msg = quotemeta(subst(patterns[curpat].o, substitutions[cursubst]));
+
+ SimpleTest.expectConsoleMessages(function () { testbench.innerHTML = css },
+ [{ errorMessage: new RegExp(msg) }],
+ nextTest);
+}
+
+SimpleTest.waitForExplicitFinish();
+nextTest();
+</script>
+</body>
+</html>
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