release: WRNexusJS 0.5.10

packages/db/test/registry.test.ts

@@ -5,6 +5,7 @@ import {
   getDb,
   hasDb,
   registerDb,
+  registerLazyDb,
   databaseNames,
   closeDatabases,
 } from "../src/index.ts";
@@ -45,3 +46,35 @@ test("getDb throws a helpful error for an unknown named database", async () => {
   expect(() => getDb("nope")).toThrow(/No database named 'nope'/);
   await closeDatabases();
 });
+
+test("named databases can be registered without opening a connection", async () => {
+  await closeDatabases();
+  let calls = 0;
+  const analytics = createDb(sqlite(":memory:"));
+
+  registerLazyDb("analytics", () => {
+    calls++;
+    return analytics;
+  });
+
+  expect(hasDb("analytics")).toBe(true);
+  expect(databaseNames()).toEqual(["analytics"]);
+  expect(calls).toBe(0);
+  expect(getDb("analytics")).toBe(analytics);
+  expect(getDb("analytics")).toBe(analytics);
+  expect(calls).toBe(1);
+
+  await closeDatabases();
+});
+
+test("closing the registry does not instantiate unused lazy databases", async () => {
+  await closeDatabases();
+  let calls = 0;
+  registerLazyDb("unused", () => {
+    calls++;
+    return createDb(sqlite(":memory:"));
+  });
+
+  await closeDatabases();
+  expect(calls).toBe(0);
+});