This test confirms an assertion in dateToDaysFrom1970() in wtf/DateMath.cpp passes. The function had a bug setting a number larger than INT_MAX to an int variable. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS d.getTime() is NaN PASS Date.UTC(1970, 0, 1, 0, 0, 0, 0) is 0 PASS d.getTime() is NaN PASS successfullyParsed is true TEST COMPLETE