message: Ensure test does not fail in CI build due to failure to obtain WebGL
  context.
diff: @@ -84,17 +84,21 @@ describe("Test pixel values of resized texture in callback (async texture loadin
  before((done) => {
  WebGLTestContext.startup();
  + if (WebGLTestContext.isInitialized) {
  const texLoadCallback: TextureLoadCallback = (/*t: TextureHandle*/): void => {
  loaded = true;
  done();
  };
  texture = TextureHandle.createForImage(3, 3, pixels, ImageSourceFormat.Png, false, texLoadCallback, false, true, false, true);
  + } else {
  + done();
  + }
  });
  after(() => WebGLTestContext.shutdown());
  it("should produce a image texture (png, glyph) resized to power of two with valid pixel values", () => {
  - if (!IModelApp.hasRenderSystem) {
  + if (!WebGLTestContext.isInitialized) {
  return;
  }
  