Initial REM planning editor

server.test.mjs

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+import assert from "node:assert/strict";
+import { mkdtemp, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import test from "node:test";
+import { createMapServer } from "./server.mjs";
+
+test("server stores and returns the editable map JSON", async () => {
+  const dataDir = await mkdtemp(join(tmpdir(), "star-map-"));
+  const server = createMapServer({ dataDir });
+
+  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
+  const { port } = server.address();
+  const baseUrl = `http://127.0.0.1:${port}`;
+
+  try {
+    const payload = {
+      background: "#101010",
+      systems: [{ id: "alpha", name: "Alpha", x: 10, y: 20, note: "saved" }],
+      connections: []
+    };
+
+    const saveResponse = await fetch(`${baseUrl}/api/map`, {
+      method: "PUT",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify(payload)
+    });
+
+    assert.equal(saveResponse.status, 200);
+    assert.deepEqual(await saveResponse.json(), { ok: true });
+
+    const loadResponse = await fetch(`${baseUrl}/api/map`);
+    assert.equal(loadResponse.status, 200);
+    assert.deepEqual(await loadResponse.json(), payload);
+  } finally {
+    await new Promise((resolve) => server.close(resolve));
+    await rm(dataDir, { recursive: true, force: true });
+  }
+});
+
+test("server rejects invalid map payloads", async () => {
+  const dataDir = await mkdtemp(join(tmpdir(), "star-map-"));
+  const server = createMapServer({ dataDir });
+
+  await new Promise((resolve) => server.listen(0, "127.0.0.1", resolve));
+  const { port } = server.address();
+
+  try {
+    const response = await fetch(`http://127.0.0.1:${port}/api/map`, {
+      method: "PUT",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify({ systems: "bad", connections: [] })
+    });
+
+    assert.equal(response.status, 400);
+  } finally {
+    await new Promise((resolve) => server.close(resolve));
+    await rm(dataDir, { recursive: true, force: true });
+  }
+});