56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
description(
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"This test checks that toString() round-trip on a function that has a typeof operator applied to a group expression will not remove the grouping."
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);
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// if these return a variable (such as y) instead of
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// the result of typeof, this means that the parenthesis
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// got lost somewhere.
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function typeof_should_preserve_parens(x, y, z) {
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return typeof (x, y);
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}
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function typeof_should_preserve_parens1(x, y, z) {
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return typeof ((x, y));
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}
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function typeof_should_preserve_parens2(x, y, z) {
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var z = 33;
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return typeof (z, (x, y));
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}
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function typeof_should_preserve_parens_multi(x, y, z) {
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var z = 33;
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return typeof ((z,(((x, y)))));
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}
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unevalf = function(x) { return '(' + x.toString() + ')'; };
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function testToString(fn) {
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// check that toString result evaluates to code that can be evaluated
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// this doesn't actually reveal the bug that this test is testing
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shouldBe("unevalf(eval(unevalf("+fn+")))", "unevalf(" + fn + ")");
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// check that grouping operator is still there (this test reveals the bug
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// but will create possible false negative if toString output changes in
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// the future)
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shouldBeTrue("/.*\\(+x\\)*, y\\)/.test(unevalf("+fn+"))");
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}
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function testToStringAndReturn(fn, p1, p2, retval)
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{
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testToString(fn);
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// check that function call produces correct result
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shouldBe("" + fn + "(" + p1 + ", " + p2 +");", retval);
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// check that function call produces correct result after eval(unevalf)
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shouldBe("eval(unevalf("+fn+ "))" + "(" + p1 + ", " + p2 +");", retval);
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}
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testToStringAndReturn("typeof_should_preserve_parens", "'a'", 1, "'number'");
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testToStringAndReturn("typeof_should_preserve_parens1", "'a'", 1, "'number'");
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testToStringAndReturn("typeof_should_preserve_parens2", "'a'", 1, "'number'");
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testToStringAndReturn("typeof_should_preserve_parens_multi", "'a'", 1, "'number'");
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