Testing Node-Boot apps backed by MongoDB

Three hooks, in increasing order of realism/cost — pick the cheapest one that still exercises what you're testing. All are demonstrated in demos/node-test-demo/test of the test framework repo. For the app-side MongoDB starter setup being tested here, see nodeboot-starter-persistence-mongodb.

useMongoMemoryServer — default choice

In-memory mongodb-memory-server instance, no Docker required, fastest. Use for any test that doesn't need transactions or change streams.

const {useMongoMemoryServer} = useNodeBoot(EmptyApp, ({useMongoMemoryServer}) => {
    useMongoMemoryServer({instance: {dbName: "custom-test-db"}}); // port, dbName, storageEngine all optional
});