[IMP] web: owlCompatibilityExtraNextTick

Introduced a function that awaits for an additionnal rendering frame
initiated by the Owl compatibility layer processing.

By default a simple "nextTick" will handle the rendering of any widget/
component stuctures having at most 1 switch between the type of
entities (Component > Widget or Widget > Component). However more time
must be spent rendering in case we have additionnal switches. In such
cases this function must be used (1 call for each additionnal switch)
since it will be removed along with the compatiblity layer once the
framework has been entirely converted, and using this helper will make
it easier to wipe it from the code base.

addons/web/static/tests/helpers/test_utils.js

@@ -97,6 +97,25 @@ odoo.define('web.test_utils', async function (require) {
         return testUtilsDom.returnAfterNextAnimationFrame();
     }
 
+    /**
+     * Awaits for an additionnal rendering frame initiated by the Owl
+     * compatibility layer processing.
+     *
+     * By default a simple "nextTick" will handle the rendering of any widget/
+     * component stuctures having at most 1 switch between the type of
+     * entities (Component > Widget or Widget > Component). However more time
+     * must be spent rendering in case we have additionnal switches. In such
+     * cases this function must be used (1 call for each additionnal switch)
+     * since it will be removed along with the compatiblity layer once the
+     * framework has been entirely converted, and using this helper will make
+     * it easier to wipe it from the code base.
+     *
+     * @returns {Promise}
+     */
+    async function owlCompatibilityExtraNextTick() {
+        return testUtilsDom.returnAfterNextAnimationFrame();
+    }
+
     // Loading static files cannot be properly simulated when their real content is
     // really needed. This is the case for static XML files so we load them here,
     // before starting the qunit test suite.
@@ -248,6 +267,7 @@ odoo.define('web.test_utils', async function (require) {
         makeTestPromiseWithAssert: makeTestPromiseWithAssert,
         nextMicrotaskTick: nextMicrotaskTick,
         nextTick: nextTick,
+        owlCompatibilityExtraNextTick,
         prepareTarget: testUtilsCreate.prepareTarget,
         returnAfterNextAnimationFrame: testUtilsDom.returnAfterNextAnimationFrame,