Resolve PR comments:

Author: janechu

packages/fast-element/src/components/element-controller.pw.spec.ts

@@ -87,7 +87,7 @@ test.describe("The ElementController", () => {
                 const element = document.createElement(name);
                 ElementController.forCustomElement(element);
 
-                return element.shadowRoot !== null;
+                return element.shadowRoot instanceof ShadowRoot;
             });
 
             expect(hasShadowRoot).toBe(false);
@@ -117,7 +117,7 @@ test.describe("The ElementController", () => {
                 const element = document.createElement(name);
                 ElementController.forCustomElement(element);
 
-                return element.shadowRoot !== null;
+                return element.shadowRoot instanceof ShadowRoot;
             });
 
             expect(hasShadowRoot).toBe(false);

packages/fast-element/src/components/hydration.pw.spec.ts

@@ -29,10 +29,7 @@ test.describe("The HydratableElementController", () => {
             element.setAttribute("needs-hydration", "");
             ElementController.forCustomElement(element);
 
-            const result = element.$fastController instanceof HydratableElementController;
-
-            ElementController.setStrategy(ElementController);
-            return result;
+            return element.$fastController instanceof HydratableElementController;
         });
 
         expect(isHydratableController).toBe(true);

packages/fast-element/src/templating/binding.pw.spec.ts

@@ -3021,9 +3021,7 @@ test.describe("The HTML binding directive", () => {
 
                 function createClassBinding(element: any) {
                     const directive = new HTMLBindingDirective(oneWay(() => ""));
-                    if (":classList") {
-                        HTMLDirective.assignAspect(directive, ":classList");
-                    }
+                    HTMLDirective.assignAspect(directive, ":classList");
 
                     directive.id = nextId();
                     directive.targetNodeId = "r";