File size: 2,285 Bytes
56838f4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | import { describe, expect, test } from "vitest";
import { extractDomain, sameDomain, isCorporateDomain } from "../lib/emailDomain";
describe("emailDomain", () => {
test("isCorporateDomain rejects free/consumer providers", () => {
expect(isCorporateDomain("user@gmail.com")).toBe(false);
expect(isCorporateDomain("user@outlook.com")).toBe(false);
expect(isCorporateDomain("user@yahoo.com")).toBe(false);
expect(isCorporateDomain("user@proton.me")).toBe(false);
// Case-insensitive: the domain is lowercased before the free-list check.
expect(isCorporateDomain("User@GMAIL.com")).toBe(false);
});
test("isCorporateDomain rejects disposable domains", () => {
// mailinator is a classic throwaway provider; mailchecker.isValid() -> false.
expect(isCorporateDomain("x@mailinator.com")).toBe(false);
});
test("isCorporateDomain accepts a real corporate domain", () => {
expect(isCorporateDomain("x@acme.com")).toBe(true);
expect(isCorporateDomain("jane.doe@acme.com")).toBe(true);
});
test("sameDomain is case-insensitive and rejects cross-domain", () => {
expect(sameDomain("a@Acme.com", "b@acme.com")).toBe(true);
expect(sameDomain("a@acme.com", "b@other.com")).toBe(false);
// A malformed side can never match.
expect(sameDomain("a@acme.com", "not-an-email")).toBe(false);
});
test("extractDomain returns the lowercased domain for well-formed emails", () => {
expect(extractDomain("a@Acme.com")).toBe("acme.com");
expect(extractDomain(" x@ACME.COM ")).toBe("acme.com");
});
test("extractDomain returns null for malformed emails", () => {
expect(extractDomain("")).toBeNull();
expect(extractDomain("no-at")).toBeNull();
expect(extractDomain("a@")).toBeNull();
expect(extractDomain("@b.com")).toBeNull();
expect(extractDomain("a@b@c.com")).toBeNull();
});
test("isCorporateDomain is false for malformed emails", () => {
expect(isCorporateDomain("")).toBe(false);
expect(isCorporateDomain("no-at")).toBe(false);
expect(isCorporateDomain("a@")).toBe(false);
expect(isCorporateDomain("@b.com")).toBe(false);
// Domain without a dot is not corporate even though it has a local + domain.
expect(isCorporateDomain("a@localhost")).toBe(false);
});
});
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