 = wtu.create3DContext();
var ext;

var formats = null;

function runTestExtension() {
  // Test that enum values are listed correctly in supported formats and in the extension object.
  ctu.testCompressedFormatsListed(gl, validFormats);
  ctu.testCorrectEnumValuesInExt(ext, validFormats);
  // Test that texture upload buffer size is validated correctly.
  ctu.testFormatRestrictionsOnBufferSize(gl, validFormats, expectedByteLength, getBlockDimensions);
  // Test TexSubImage validation on dimensions
  // Com