src/api.test.ts

import { describe, it, expect } from "vitest";

describe("API & Data Integrity", () => {
  it("calculates deliverability and reply rate percentages accurately", () => {
    const sent = 1000;
    const replies = 47;
    const rate = ((replies / sent) * 100).toFixed(1);
    expect(rate).toBe("4.7");
  });

  it("clamps reputation score between 0 and 100", () => {
    const clamp = (val: number) => Math.min(100, Math.max(0, val));
    expect(clamp(105)).toBe(100);
    expect(clamp(-5)).toBe(0);
    expect(clamp(98.4)).toBe(98.4);
  });

  it("formats provider names correctly", () => {
    const formatProvider = (p: string) => {
      const cleaned = p.toUpperCase();
      if (cleaned === "GGOOGLE" || cleaned === "GOOGLE") return "Google Workspace";
      if (cleaned === "MICROSOFT" || cleaned === "OFFICE365") return "Microsoft 365";
      if (cleaned === "SMTP") return "Custom SMTP / IMAP";
      return cleaned;
    };

    expect(formatProvider("GGOOGLE")).toBe("Google Workspace");
    expect(formatProvider("GOOGLE")).toBe("Google Workspace");
    expect(formatProvider("MICROSOFT")).toBe("Microsoft 365");
    expect(formatProvider("SMTP")).toBe("Custom SMTP / IMAP");
  });
});