specs cleanup

Author: lukemckinstry

packages/engine/Source/Scene/Google2DImageryProvider.js

@@ -79,6 +79,7 @@ const trailingSlashRegex = /\/$/;
 function Google2DImageryProvider(options) {
   options = options ?? Frozen.EMPTY_OBJECT;
   this._maximumLevel = options.maximumLevel ?? 22;
+  this._minimumLevel = options.minimumLevel ?? 0;
 
   //>>includeStart('debug', pragmas.debug);
   if (!defined(options.session)) {
@@ -144,6 +145,7 @@ function Google2DImageryProvider(options) {
     ellipsoid: options.ellipsoid,
     rectangle: options.rectangle,
     maximumLevel: this._maximumLevel,
+    minimumLevel: this._minimumLevel,
   });
   provider._resource = resource;
   this._imageryProvider = provider;

packages/engine/Specs/Scene/Google2DImageryProviderSpec.js

@@ -238,11 +238,6 @@ describe("Scene/Google2DImageryProvider", function () {
   // });
 
   it("requestImage returns a promise for an image and loads it for cross-origin use", function () {
-    spyOn(
-      Google2DImageryProvider.prototype,
-      "getViewportCredits",
-    ).and.returnValue(Promise.resolve(""));
-
     const provider = new Google2DImageryProvider({
       session: "test-session-token",
       key: "test-key",