This test runs the WebGL Test listed below in an iframe and reports PASS or FAIL.

Test: ../../resources/webgl_test_files/conformance2/buffers/one-large-uniform-buffer.html
[ 1: PASS ] WebGL context exists
[ 2: PASS ] getError was expected value: NO_ERROR : Setting up uniform block should succeed
[ 3: PASS ] getError was expected value: NO_ERROR : Draw with uniform block should succeed
[ 4: FAIL ] canvas should be same as input uniform at (0, 0) expected: 127,191,64,255 was 0,0,0,0
[ 5: PASS ] getError was expected value: NO_ERROR : Setting up uniform block should succeed
[ 6: PASS ] getError was expected value: NO_ERROR : Draw with uniform block should succeed
[ 7: FAIL ] canvas should be same as input uniform at (0, 0) expected: 127,191,64,255 was 0,0,0,0
[ 8: PASS ] getError was expected value: NO_ERROR : Readback from uniform block should succeed
[ 9: PASS ] successfullyParsed is true
[ FAIL ] 2 failures reported