test(core): Add config tests

Author: Ehesp

packages/core/src/config.test.ts

@@ -0,0 +1,70 @@
+import { FirebaseApp } from "firebase/app";
+import { Auth } from "firebase/auth";
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import { initializeUI } from "./config";
+import { enUs, registerLocale } from "@firebase-ui/translations";
+import { autoAnonymousLogin, autoUpgradeAnonymousUsers } from "./behaviors";
+
+describe('initializeUI', () => {
+  it('should return a valid deep store with default values', () => {
+    const config = {
+      app: {} as FirebaseApp,
+      auth: {} as Auth,
+    };
+
+    const ui = initializeUI(config);
+    expect(ui).toBeDefined();
+    expect(ui.get()).toBeDefined();
+    expect(ui.get().app).toBe(config.app);
+    expect(ui.get().auth).toBe(config.auth);
+    expect(ui.get().behaviors).toEqual({});
+    expect(ui.get().state).toEqual("idle");
+    expect(ui.get().locale).toEqual(enUs);
+  });
+
+  it('should merge behaviors', () => {
+    const config = {
+      app: {} as FirebaseApp,
+      auth: {} as Auth,
+      behaviors: [autoUpgradeAnonymousUsers()],
+    };
+
+    const ui = initializeUI(config);
+    expect(ui).toBeDefined();
+    expect(ui.get()).toBeDefined();
+    expect(ui.get().behaviors).toHaveProperty("autoUpgradeAnonymousCredential");
+    expect(ui.get().behaviors).toHaveProperty("autoUpgradeAnonymousProvider");
+  });
+
+  it('should set state and update state when called', () => {
+    const config = {
+      app: {} as FirebaseApp,
+      auth: {} as Auth,
+    };
+
+    const ui = initializeUI(config);
+    expect(ui.get().state).toEqual("idle");
+    ui.get().setState("loading");
+    expect(ui.get().state).toEqual("loading");
+    ui.get().setState("idle");
+    expect(ui.get().state).toEqual("idle");
+  });
+
+  it('should set state and update locale when called', () => {
+    const testLocale1 = registerLocale('test1', {});
+    const testLocale2 = registerLocale('test2', {});
+    
+    const config = {
+      app: {} as FirebaseApp,
+      auth: {} as Auth,
+    };
+
+    const ui = initializeUI(config);
+    expect(ui.get().locale.locale).toEqual('en-US');
+    ui.get().setLocale(testLocale1);
+    expect(ui.get().locale.locale).toEqual('test1');
+    ui.get().setLocale(testLocale2);
+    expect(ui.get().locale.locale).toEqual('test2');
+  });
+});
+