feat: convert network-topology to a full plugin (B1)

plugins/network-topology/tests/backend/migrations.test.ts

@@ -0,0 +1,95 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { createTestDb, type TestDb } from "@termix/plugin-sdk/testing";
+import { pluginDir } from "./helpers";
+
+// network_topology as core's SQLite bootstrap created it before 2.9.0.
+const LEGACY_DDL = `
+  CREATE TABLE network_topology (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    topology TEXT,
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
+  );
+`;
+
+let db: TestDb | null = null;
+
+afterEach(() => {
+  db?.close();
+  db = null;
+});
+
+const tableExists = (name: string) =>
+  !!db!.sqlite
+    .prepare("SELECT name FROM sqlite_master WHERE type = 'table' AND name = ?")
+    .get(name);
+
+describe("adopting network_topology", () => {
+  it("keeps every existing row when the legacy table is there", async () => {
+    db = await createTestDb(pluginDir, {
+      before: (sqlite) => {
+        sqlite.exec("INSERT INTO users (id) VALUES ('user-1'), ('user-2')");
+        sqlite.exec(LEGACY_DDL);
+        sqlite
+          .prepare(
+            "INSERT INTO network_topology (user_id, topology, updated_at) VALUES (?, ?, ?)",
+          )
+          .run(
+            "user-1",
+            '{"nodes":[{"data":{"id":"1"}}],"edges":[]}',
+            "2026-01-01T00:00:00.000Z",
+          );
+      },
+    });
+
+    expect(db.applied).toEqual(["0001_adopt_network_topology"]);
+    expect(tableExists("network_topology")).toBe(false);
+    expect(tableExists("p_network_topology_graphs")).toBe(true);
+
+    const rows = db.sqlite
+      .prepare(
+        "SELECT user_id, topology, updated_at FROM p_network_topology_graphs ORDER BY id",
+      )
+      .all();
+    expect(rows).toEqual([
+      {
+        user_id: "user-1",
+        topology: '{"nodes":[{"data":{"id":"1"}}],"edges":[]}',
+        updated_at: "2026-01-01T00:00:00.000Z",
+      },
+    ]);
+  });
+
+  it("creates the table fresh when there is no legacy one", async () => {
+    db = await createTestDb(pluginDir);
+
+    expect(tableExists("network_topology")).toBe(false);
+    expect(tableExists("p_network_topology_graphs")).toBe(true);
+    expect(
+      db.sqlite.prepare("SELECT * FROM p_network_topology_graphs").all(),
+    ).toEqual([]);
+  });
+
+  it("removes a user's topology when the user is deleted", async () => {
+    db = await createTestDb(pluginDir, {
+      before: (sqlite) => {
+        sqlite.exec("INSERT INTO users (id) VALUES ('user-1'), ('user-2')");
+      },
+    });
+    const insert = db.sqlite.prepare(
+      "INSERT INTO p_network_topology_graphs (user_id, topology) VALUES (?, ?)",
+    );
+    insert.run("user-1", "{}");
+    insert.run("user-2", "{}");
+
+    db.sqlite.exec("DELETE FROM users WHERE id = 'user-1'");
+
+    const remaining = (
+      db.sqlite
+        .prepare("SELECT user_id FROM p_network_topology_graphs")
+        .all() as { user_id: string }[]
+    ).map((row) => row.user_id);
+    expect(remaining).toEqual(["user-2"]);
+  });
+});