Assertion failing without retrying

[motykadaw]

I have a custom function that finds the table (list) content and returns it as an object:

Cypress.Commands.add(
  "getTableContents",
  { prevSubject: ["element"] },
  (subject, rowSelector, valueGetters) => {
    if (subject.get().length > 1) {
      throw new Error(
        `Selector "${subject.selector}" returned more than 1 element.`
      );
    }

    return cy
      .testEl(rowSelector)
      .then(($nodes) =>
        $nodes
          .get()
          .map((row) =>
            mapObjIndexed((valueGetter) => valueGetter(row), valueGetters)
          )
      );
  }
);

(mapObjIndexed).

I'm using in the following way (simplified for readability):

(...) // test code that adds the page with proper name
  cy
    .testEl("pages-list")
    .getTableContents("table-row", {
      name: testValueGetter("name"),
    })
    .should("containSubset", [{ name: "Test Page Name" }]);

With

export const testValueGetter = (selector: string) => (element: HTMLElement) => {
  const value = Cypress.$(element).find(`[data-test="${selector}"]`).get(0);
  return trim(value?.textContent || "");
};

Initially the function correctly resolves the list of values, but adding new page is asynchronous so it appears some time after the assertion has already failed as it doesn't wait, it just fails the test as soon as it resolves the initial list state. Any changes in timeout configs don't help, not sure how to solve that. Any tips please?