Function getResourceCountDelta

modules/test-utils/src/lifecycle-test.ts:363–374

(oldResourceCounts: Record<string, number>)

}

function getResourceCountDelta(oldResourceCounts: Record<string, number>): Error | null {
  const resourceCounts = getResourceCounts();

  for (const resourceName in resourceCounts) {
    if (resourceCounts[resourceName] !== oldResourceCounts[resourceName]) {
      return new Error(
        `${resourceCounts[resourceName] - oldResourceCounts[resourceName]} ${resourceName}s`
      );
    }
  }
  return null;
}

function injectSpies(layer: Layer, spies: string[], spyFactory: SpyFactory): Record<string, Spy> {
  const spyMap: Record<string, Spy> = {};