added Jasmine test suite from inside src/static dir to git repo

src/static/tests/Spec.js

@@ -0,0 +1,57 @@
+console.log("Spec.js is loading");
+
+describe("GameArray JavaScript", () => {
+    const inputId= "id_text";
+    const errorClass = "invalid-feedback";
+    const inputSelector = `#${inputId}`;
+    const errorSelector = `.${errorClass}`;
+    let testDiv;
+    let textInput;
+    let errorMsg;
+
+    beforeEach(() => {
+        console.log("beforeEach");
+        testDiv = document.createElement("div");
+        testDiv.innerHTML = `
+            <form>
+                <input
+                    id="${inputId}"
+                    name="text"
+                    class="form-control form-control-lg is-invalid"
+                    placeholder="Enter a to-do item"
+                    value="Value as submitted"
+                    aria-describedby="id_text_feedback"
+                    required
+                />
+                <div id="id_text_feedback" class="${errorClass}">An error message</div>
+            </form>
+        `;
+        document.body.appendChild(testDiv);
+        textInput = document.querySelector(inputSelector);
+        errorMsg = document.querySelector(errorSelector);
+    });
+
+    afterEach(() => {
+        testDiv.remove();
+    });
+
+    it("should have a useful html fixture", () => {
+        console.log("in test 1");
+        expect(errorMsg.checkVisibility()).toBe(true);
+    });
+
+    it("should hide error message on input", () => {
+        console.log("in test 2");
+        initialize(inputSelector);
+        textInput.dispatchEvent(new InputEvent("input"));
+
+        expect(errorMsg.checkVisibility()).toBe(false);
+    });
+
+    it("should not hide error message before event is fired", () => {
+        console.log("in test 3");
+        initialize(inputSelector);
+
+        expect(errorMsg.checkVisibility()).toBe(true);
+    });
+});