
This tests the behaviour of a number of the DOM Canvas drawing methods when
given 0, inf, or NaN as parameters.
A number of the Canvas methods do not have defined behaviour when given inf
or nan and so we use UNDEFINED to indicate this.

PASS called fillRect 0*0 fillRect without throwing an exception.
UNDEFINED called fillRect with inf*inf fillRect without throwing an exception.
UNDEFINED threw exception code 1 on nan*nan fillRect.
PASS called clearRect 0*0 clearRect without throwing an exception.
UNDEFINED called clearRect with inf*inf clearRect without throwing an exception.
UNDEFINED threw exception code 1 on nan*nan clearRect.
PASS called rect 0*0 rect without throwing an exception.
UNDEFINED called rect with inf*inf rect without throwing an exception.
UNDEFINED threw exception code 1 on nan*nan rect.
PASS called fill with an empty path without throwing an exception.
PASS threw exception code 1 on arc with zero-length radius
PASS threw exception code 1 on arc with negative-length radius
UNDEFINED did not throw exception on arc with infinite radius
UNDEFINED threw exception code 1 on arc with nan-length radius
PASS threw exception code 1 on arcTo with zero-length radius
PASS threw exception code 1 on arcTo with negative-length radius
UNDEFINED did not throw exception on arcTo with infinite radius
UNDEFINED threw exception code 1 on arcTo with nan-length radius
UNDEFINED did not throw exception on lineTo(inf, inf).
UNDEFINED did not throw exception on lineTo(nan, nan).
UNDEFINED did not throw exception on quadraticCurveTo(20, 20, inf, inf).
UNDEFINED did not throw exception on quadraticCurveTo(inf, inf, 20, 20).
UNDEFINED did not throw exception on quadraticCurveTo(20, 20, nan, nan).
UNDEFINED did not throw exception on quadraticCurveTo(nan, nan, 20, 20).
UNDEFINED did not throw exception on bezierCurveTo(20, 20, 30, 30, inf, inf).
UNDEFINED did not throw exception on bezierCurveTo(20, 20, inf, inf, 30, 30).
UNDEFINED did not throw exception on bezierCurveTo(inf, inf, 20, 20, 30, 30).
UNDEFINED did not throw exception on bezierCurveTo(20, 20, 30, 30, nan, nan).
UNDEFINED did not throw exception on bezierCurveTo(20, 20, nan, nan, 30, 30).
UNDEFINED did not throw exception on bezierCurveTo(nan, nan, 20, 20, 30, 30).