message: Don't bother loading tiles when testing an empty view.
diff: @@ -638,9 +638,11 @@ describe("Render mirukuru", () => {
  expect(viewState).instanceof(SpatialViewState);
  });
  - it("should render empty initial view", async () => {
  + it("should render empty view", async () => {
  const rect = new ViewRect(0, 0, 100, 100);
  await testViewports("0x24", imodel, rect.width, rect.height, async (vp) => {
  + // Turn off all models so we're rendering an empty view.
  + vp.changeViewedModels([]);
  await vp.drawFrame();
  // Should have all black background pixels
  @@ -672,10 +674,6 @@ describe("Render mirukuru", () => {
  expect(oob).to.not.be.undefined;
  expect(oob.array.length).to.equal(0);
  }
  -
  - // We run this test twice. The second time, the tiles will already be available so the view will NOT be empty. Purge them now.
  - await imodel.tiles.purgeTileTrees(undefined);
  - vp.refreshForModifiedModels(undefined);
  }, 1.0);
  });
  