// Create a valid object with a valid embedded object (`address`).
const amy = this.realm.write(() => {
  return this.realm.create(PersonWithEmbeddedSchema.name, {
    name: "Amy",
    age: 30,
    address: { street: "Broadway" },
  });
});
expect(this.realm.objects(PersonWithEmbeddedSchema.name).length).equals(1);
expect(amy.address?.street).equals("Broadway");

// Update the embedded object with an invalid one.
this.realm.write(() => {
  // It is important to catch the exception within `realm.write()` in order to test
  // that the object creation path does not modify the object (rather than being due
  // to `realm.write()` cancelling the transaction).
  expect(() => {
    const invalidEmbeddedAddress = {};
    // @ts-expect-error Testing setting invalid type.
    amy.address = invalidEmbeddedAddress;
  }).to.throw("Missing value for property 'street'");
});
const objects = this.realm.objects<IPersonWithEmbedded>(PersonWithEmbeddedSchema.name);
expect(objects.length).equals(1);
expect(objects[0].address).to.not.be.null;
//  Fails: `street` will be the default value (empty string).
expect(objects[0].address?.street).equals("Broadway");