Function checkIsOnPropertiesPatched

packages/zone.js/test/browser/browser.spec.ts:372–418

(
          target: any,
          shouldPatchedProperties?: string[],
          ignoredProperties?: string[],
        )

        );

        function checkIsOnPropertiesPatched(
          target: any,
          shouldPatchedProperties?: string[],
          ignoredProperties?: string[],
        ) {
          let checkTargetProps =
            shouldPatchedProperties && shouldPatchedProperties.map((p) => `on${p}`);
          if (!checkTargetProps) {
            checkTargetProps = [];
            for (let prop in target) {
              checkTargetProps.push(prop);
            }
          }
          for (let i = 0; i < checkTargetProps.length; i++) {
            const prop = checkTargetProps[i];
            if (
              ignoredProperties &&
              ignoredProperties.filter((ignoreProp) => ignoreProp === prop).length > 0
            ) {
              continue;
            }
            if (prop.slice(0, 2) === 'on' && prop.length > 2) {
              let propExistsOnTarget = false;
              let checkTarget = target;
              while (checkTarget && checkTarget !== Object) {
                const desc = Object.getOwnPropertyDescriptor(checkTarget, prop);
                if (desc && desc.configurable) {
                  propExistsOnTarget = true;
                  break;
                }
                checkTarget = Object.getPrototypeOf(checkTarget);
              }
              if (!propExistsOnTarget) {
                //console.warn(`${prop} not exists on target ${target}`);
                continue;
              }
              target[prop] = noop;
              if (!target[Zone.__symbol__('ON_PROPERTY' + prop.slice(2))]) {
                fail(`${prop} of ${target} is not patched`);
              } else {
                expect(target[prop]).toBe(noop);
                target[prop] = null;
                expect(target[Zone.__symbol__('ON_PROPERTY' + prop.slice(2))]).toBeNull();
              }
            }
          }
        }

        it('should patch all possible on properties on native prototype', function () {
          function isPropertyPatched(obj: any, prop: string, prototype?: any) {