Make sure that getBufferSubData() doesn't work on WebGL 1 contexts

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS receiver[0] is fullArrayView[0]
PASS receiver[1] is fullArrayView[1]
PASS receiver[2] is fullArrayView[2]
PASS receiver[3] is fullArrayView[3]
PASS receiver[4] is fullArrayView[4]
PASS receiver[5] is fullArrayView[5]
PASS receiver[6] is fullArrayView[6]
PASS receiver[7] is fullArrayView[7]
PASS receiver[8] is fullArrayView[8]
PASS receiver[9] is fullArrayView[9]
PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS context.getError() is context.NO_ERROR
PASS context.getBufferSubData(context.ARRAY_BUFFER, 0, receiver, 0, 10) threw exception TypeError: context.getBufferSubData is not a function. (In 'context.getBufferSubData(context.ARRAY_BUFFER, 0, receiver, 0, 10)', 'context.getBufferSubData' is undefined).
PASS context.getError() is context.NO_ERROR
PASS context is null
PASS successfullyParsed is true

TEST COMPLETE