src/v8/test/mjsunit/es6/math-sign.js

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assertEquals("Infinity", String(1/Math.sign(0)));
assertEquals("-Infinity", String(1/Math.sign(-0)));
assertEquals(1, Math.sign(100));
assertEquals(-1, Math.sign(-199));
assertEquals(1, Math.sign(100.1));
assertTrue(isNaN(Math.sign("abc")));
assertTrue(isNaN(Math.sign({})));
assertEquals(0, Math.sign([]));
assertEquals(1, Math.sign([1]));
assertEquals(-1, Math.sign([-100.1]));
assertTrue(isNaN(Math.sign([1, 1])));
assertEquals(1, Math.sign({ toString: function() { return "100"; } }));
assertEquals(1, Math.sign({ toString: function() { return 100; } }));
assertEquals(-1, Math.sign({ valueOf: function() { return -1.1; } }));
assertEquals(-1, Math.sign({ valueOf: function() { return "-1.1"; } }));
assertEquals(-1, Math.sign(-Infinity));
assertEquals(1, Math.sign(Infinity));
assertEquals(-1, Math.sign("-Infinity"));
assertEquals(1, Math.sign("Infinity"));