Initial Commit

packages/communication/emails/emailer/src/fakes/fake-smtp-client.test.ts

@@ -0,0 +1,65 @@
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { FakeSmtpClient } from "./fake-smtp-client.js";
+
+describe("FakeSmtpClient", () => {
+    it("consumes scripted responses in FIFO order", {
+        timeout: 5000,
+    }, async () => {
+        const f = new FakeSmtpClient();
+        f.push({ info: { messageId: "<1@h>" } });
+        f.push({ info: { messageId: "<2@h>" } });
+        const a = await f.sendMail({ from: "a", to: "b", subject: "x" });
+        const b = await f.sendMail({ from: "a", to: "b", subject: "x" });
+        expect(a.messageId).toBe("<1@h>");
+        expect(b.messageId).toBe("<2@h>");
+        expect(f.calls.length).toBe(2);
+    });
+
+    it("rejects with no response queued", { timeout: 5000 }, async () => {
+        const f = new FakeSmtpClient();
+        await expect(
+            f.sendMail({ from: "a", to: "b", subject: "x" })
+        ).rejects.toThrow("no response queued");
+    });
+
+    it("rejects when scripted reject is supplied", {
+        timeout: 5000,
+    }, async () => {
+        const f = new FakeSmtpClient();
+        f.push({ reject: new Error("nope") });
+        await expect(
+            f.sendMail({ from: "a", to: "b", subject: "x" })
+        ).rejects.toThrow("nope");
+    });
+
+    it("throws when scripted info is missing", { timeout: 5000 }, async () => {
+        const f = new FakeSmtpClient();
+        f.push({});
+        await expect(
+            f.sendMail({ from: "a", to: "b", subject: "x" })
+        ).rejects.toThrow("scripted response missing info");
+    });
+
+    it("verify returns scheduled boolean", { timeout: 5000 }, async () => {
+        const f = new FakeSmtpClient();
+        expect(await f.verify()).toBe(true);
+        f.scheduleVerify(false);
+        expect(await f.verify()).toBe(false);
+    });
+
+    it("verify rejects when scheduled error", { timeout: 5000 }, async () => {
+        const f = new FakeSmtpClient();
+        f.scheduleVerify(false);
+        f.scheduleVerify(new Error("boom"));
+        await expect(f.verify()).rejects.toThrow("boom");
+        // and reverts to the last scheduled boolean
+        expect(await f.verify()).toBe(false);
+    });
+
+    it("close increments closeCalls", { timeout: 5000 }, async () => {
+        const f = new FakeSmtpClient();
+        await f.close();
+        await f.close();
+        expect(f.closeCalls).toBe(2);
+    });
+});