CONSOLE MESSAGE: line 77: WebGL: INVALID_VALUE: bufferSubData: offset out of range
 Checks the last two arguments to bufferData() are respected.

PASS gl.getError() is gl.NO_ERROR
PASS gl.getError() is gl.NO_ERROR
PASS Left half of canvas should be filled
PASS Right half of canvas should be empty
PASS gl.getError() is gl.NO_ERROR
expected: red channel should = 255 but was = 0.
FAIL Left half of canvas should be empty
expected: red channel should = 0 but was = 255.
FAIL Right half of canvas should be filled
PASS gl.getError() is gl.NO_ERROR
expected: red channel should = 255 but was = 0.
FAIL Left half of canvas should be empty
expected: red channel should = 0 but was = 255.
FAIL Right half of canvas should be filled
FAIL gl.getError() should be 0. Was 1281.
PASS Left half of canvas should be filled
PASS Right half of canvas should be empty
PASS successfullyParsed is true

TEST COMPLETE