refactor: update email interface and email sending test

examples/common_nestjs_remix/apps/api/src/auth/__tests__/auth.service.spec.ts

@@ -68,24 +68,12 @@ describe("AuthService", () => {
     it("should send a welcome email after successful registration", async () => {
       const user = userFactory.build();
       const password = "password123";
-      const subject = "Hello there!";
-      const text = "General Kenobi";
-      const html = "<strong>You are a bold one</strong>";
-
-      emailAdapter.setEmailOverride({
-        subject,
-        text,
-        html,
-      });
 
-      await authService.register(user.email, password);
-      const lastEmail = emailAdapter.getLastEmail();
+      const allEmails = emailAdapter.getAllEmails();
 
-      expect(lastEmail).toBeDefined();
-      expect(lastEmail?.to).toBe(user.email);
-      expect(lastEmail?.subject).toBe(subject);
-      expect(lastEmail?.text).toBe(text);
-      expect(lastEmail?.html).toBe(html);
+      expect(allEmails).toHaveLength(0);
+      await authService.register(user.email, password);
+      expect(allEmails).toHaveLength(1);
     });
 
     it("should throw ConflictException if user already exists", async () => {

examples/common_nestjs_remix/apps/api/src/common/emails/email.interface.ts

@@ -1,13 +1,9 @@
-interface BaseEmail {
+export type Email = {
   to: string;
   from: string;
   subject: string;
-}
-
-type RequireAtLeastOne<T> = {
-  [K in keyof T]-?: Required<Pick<T, K>> &
-    Partial<Pick<T, Exclude<keyof T, K>>>;
-}[keyof T];
-
-export type Email = RequireAtLeastOne<{ text: string; html: string }> &
-  BaseEmail;
+} & (
+  | { html: string; text?: never }
+  | { text: string; html?: never }
+  | { text: string; html: string }
+);

examples/common_nestjs_remix/apps/api/test/helpers/test-email.adapter.ts

@@ -6,17 +6,9 @@ import { last } from "lodash";
 @Injectable()
 export class EmailTestingAdapter extends EmailAdapter {
   private sentEmails: Email[] = [];
-  private emailOverride: Partial<Email> | null = null;
 
   async sendMail(email: Email): Promise<void> {
-    const finalEmail = this.emailOverride
-      ? { ...email, ...this.emailOverride }
-      : email;
-    this.sentEmails.push(finalEmail);
-  }
-
-  setEmailOverride(override: Partial<Email>): void {
-    this.emailOverride = override;
+    this.sentEmails.push(email);
   }
 
   getAllEmails(): Email[] {