Get base files closer to being bootstrappable

backend/handlers.spec.ts

@@ -0,0 +1,71 @@
+// Tests for handlers.ts
+// These tests use mock Call objects
+
+import assert from "node:assert/strict";
+import { describe, it } from "node:test";
+import type { Request as ExpressRequest } from "express";
+import { Session } from "./diachron/auth/types";
+import { contentTypes } from "./diachron/content-types";
+import { multiHandler } from "./handlers";
+import { httpCodes } from "./diachron/http-codes";
+import type { Call } from "./diachron/types";
+import { anonymousUser } from "./diachron/user";
+
+// Helper to create a minimal mock Call
+function createMockCall(overrides: Partial<Call> = {}): Call {
+    const defaultSession = new Session(null, anonymousUser);
+    return {
+        pattern: "/test",
+        path: "/test",
+        method: "GET",
+        parameters: {},
+        request: {} as ExpressRequest,
+        user: anonymousUser,
+        session: defaultSession,
+        ...overrides,
+    };
+}
+
+describe("handlers", () => {
+    describe("multiHandler", () => {
+        it("returns OK status", async () => {
+            const call = createMockCall({ method: "GET" });
+            const result = await multiHandler(call);
+
+            assert.equal(result.code, httpCodes.success.OK);
+        });
+
+        it("returns text/plain content type", async () => {
+            const call = createMockCall();
+            const result = await multiHandler(call);
+
+            assert.equal(result.contentType, contentTypes.text.plain);
+        });
+
+        it("includes method in result", async () => {
+            const call = createMockCall({ method: "POST" });
+            const result = await multiHandler(call);
+
+            assert.ok(result.result.includes("POST"));
+        });
+
+        it("includes a random number in result", async () => {
+            const call = createMockCall();
+            const result = await multiHandler(call);
+
+            // Result format: "that was GET (0.123456789)"
+            assert.match(result.result, /that was \w+ \(\d+\.?\d*\)/);
+        });
+
+        it("works with different HTTP methods", async () => {
+            const methods = ["GET", "POST", "PUT", "PATCH", "DELETE"] as const;
+
+            for (const method of methods) {
+                const call = createMockCall({ method });
+                const result = await multiHandler(call);
+
+                assert.ok(result.result.includes(method));
+            }
+        });
+    });
+});