[framebuffer-test.html]
  [WebGL test #37: gl.getFramebufferAttachmentParameter(gl.DRAW_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.FRAMEBUFFER_ATTACHMENT_BLUE_SIZE) should be 0. Was 8.]
    expected:
      if os == "mac": FAIL

  [WebGL test #38: getError expected: INVALID_OPERATION. Was INVALID_ENUM : getFramebufferAttachmentParameter(FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING) on read framebuffer with no attachment.]
    expected: FAIL