minor fixes

1-js/01-getting-started/04-variables/1-hello-variables/4/solution.js

@@ -0,0 +1,7 @@
+let user, admin;
+
+user = "John";
+
+admin = user;
+
+alert(admin);

1-js/01-getting-started/04-variables/1-hello-variables/4/task.md

@@ -0,0 +1 @@
+Show the value of `admin` using `alert` (will show "John").

1-js/01-getting-started/04-variables/1-hello-variables/4/test.js

@@ -0,0 +1,14 @@
+let nativeAlert = globalThis.alert;
+globalThis.alert = jasmine.createSpy();
+
+describe("Test", function() {
+  
+  after(function() {
+    globalThis.alert = this.alert;
+  });
+
+  it(`user and admin equal "John"`, function() {
+    expect(user).toEqual("John");
+    expect(admin).toEqual("John");
+  });
+});