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var assert = require("assert");
var UglifyJS = require("../node");
describe("String literals", function() {
it("Should throw syntax error if a string literal contains a newline", function() {
var inputs = [
"'\n'",
"'\r'",
'"\r\n"',
"'\u2028'",
'"\u2029"'
];
var test = function(input) {
return function() {
var ast = UglifyJS.parse(input);
};
};
var error = function(e) {
return e instanceof UglifyJS.JS_Parse_Error
&& e.message === "Unterminated string constant";
};
for (var input in inputs) {
assert.throws(test(inputs[input]), error);
}
});
it("Should not throw syntax error if a string has a line continuation", function() {
var output = UglifyJS.parse('var a = "a\\\nb";').print_to_string();
assert.equal(output, 'var a="ab";');
});
it("Should throw error in strict mode if string contains escaped octalIntegerLiteral", function() {
var inputs = [
'"use strict";\n"\\76";',
'"use strict";\nvar foo = "\\76";',
'"use strict";\n"\\1";',
'"use strict";\n"\\07";',
'"use strict";\n"\\011"'
];
var test = function(input) {
return function() {
var output = UglifyJS.parse(input);
}
};
var error = function(e) {
return e instanceof UglifyJS.JS_Parse_Error
&& e.message === "Legacy octal escape sequences are not allowed in strict mode";
}
for (var input in inputs) {
assert.throws(test(inputs[input]), error);
}
});
it("Should not throw error outside strict mode if string contains escaped octalIntegerLiteral", function() {
var tests = [
[ ';"\\76";', ';">";' ],
[ ';"\\0";', ';"\\0";' ],
[ ';"\\08"', ';"\\x008";' ],
[ ';"\\008"', ';"\\x008";' ],
[ ';"\\0008"', ';"\\x008";' ],
[ ';"use\\\n strict";\n"\\07";', ';"use strict";"\07";' ],
[ '"use strict" === "use strict";\n"\\76";', '"use strict"==="use strict";">";' ],
];
for (var test in tests) {
var output = UglifyJS.parse(tests[test][0]).print_to_string();
assert.equal(output, tests[test][1]);
}
});
it("Should not throw error when digit is 8 or 9", function() {
assert.equal(UglifyJS.parse('"use strict";;"\\08"').print_to_string(), '"use strict";;"\\x008";');
assert.equal(UglifyJS.parse('"use strict";;"\\09"').print_to_string(), '"use strict";;"\\x009";');
});
it("Should not unescape unpaired surrogates", function() {
var code = [];
for (var i = 0; i <= 0xF; i++) {
code.push("\\u000" + i.toString(16));
}
for (;i <= 0xFF; i++) {
code.push("\\u00" + i.toString(16));
}
for (;i <= 0xFFF; i++) {
code.push("\\u0" + i.toString(16));
}
for (; i <= 0xFFFF; i++) {
code.push("\\u" + i.toString(16));
}
code = ';"' + code.join() + '"';
var normal = UglifyJS.minify(code, {
compress: false,
mangle: false,
output: {
ascii_only: false
}
});
if (normal.error) throw normal.error;
assert.ok(code.length > normal.code.length);
assert.strictEqual(eval(code), eval(normal.code));
var ascii = UglifyJS.minify(code, {
compress: false,
mangle: false,
output: {
ascii_only: false
}
});
if (ascii.error) throw ascii.error;
assert.ok(code.length > ascii.code.length);
assert.strictEqual(eval(code), eval(ascii.code));
});
});
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