[FIX] survey: fix survey timer related issues

This commit fixes timer related issues on survey flows, for both regulars
surveys and survey sessions.
The timer was unreliable in its completion by a whole second, which had not a
big impact at the user level but could make some tests fail (randomly).

Side changes from this commit:
- Reduced delays in the survey session tests to speed up testing
- Removed some timer flickering on survey views

LINKS

Task 2230526
Runbot error ID 535

closes odoo/odoo#49178

X-original-commit: 15c72aec71d42624685fb0fc9df25279c7855310
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>

2 files changed, 18 insertions, 14 deletions

diff --git a/addons/survey/static/src/js/survey_session_manage.js b/addons/survey/static/src/js/survey_session_manage.js
index 897aab6d7b3..79d53a2db91 100644
--- a/addons/survey/static/src/js/survey_session_manage.js
+++ b/addons/survey/static/src/js/survey_session_manage.js
@@ -26,6 +26,7 @@ publicWidget.registry.SurveySessionManage = publicWidget.Widget.extend({
      */
     start: function () {
         var self = this;
+        this.fadeInOutTime = 500;
         return this._super.apply(this, arguments).then(function () {
             // general survey props
             self.surveyId = self.$el.data('surveyId');
@@ -304,7 +305,7 @@ publicWidget.registry.SurveySessionManage = publicWidget.Widget.extend({
 
         var resolveFadeOut;
         var fadeOutPromise = new Promise(function (resolve, reject) { resolveFadeOut = resolve; });
-        this.$el.fadeOut(500, function () {
+        this.$el.fadeOut(this.fadeInOutTime, function () {
             resolveFadeOut();
         });
 
@@ -323,7 +324,7 @@ publicWidget.registry.SurveySessionManage = publicWidget.Widget.extend({
                 var $renderedTemplate = $(results[1]);
                 self.$el.replaceWith($renderedTemplate);
                 self.attachTo($renderedTemplate);
-                self.$el.fadeIn(500, function () {
+                self.$el.fadeIn(self.fadeInOutTime, function () {
                     self._startTimer();
                 });
             } else {
diff --git a/addons/survey/static/src/js/survey_timer.js b/addons/survey/static/src/js/survey_timer.js
index d0a38c88324..2bfd78fedf8 100644
--- a/addons/survey/static/src/js/survey_timer.js
+++ b/addons/survey/static/src/js/survey_timer.js
@@ -25,17 +25,16 @@ publicWidget.registry.SurveyTimerWidget = publicWidget.Widget.extend({
     * @override
     */
     start: function () {
-        var superDef = this._super.apply(this, arguments);
-
-        this.countDownDate = moment.utc(this.timer).add(this.timeLimitMinutes, 'minutes');
-        if (this.timeLimitMinutes <= 0 || this.countDownDate.diff(moment.utc(), 'seconds') < 0) {
-            this.trigger_up('time_up');
-        } else {
-            this._updateTimer(this);
-            this.surveyTimerInterval = setInterval(this._updateTimer.bind(this), 1000);
-        }
-
-        return superDef;
+        var self = this;
+        return this._super.apply(this, arguments).then(function () {
+            self.countDownDate = moment.utc(self.timer).add(self.timeLimitMinutes, 'minutes');
+            if (self.timeLimitMinutes <= 0 || self.countDownDate.diff(moment.utc(), 'seconds') < 0) {
+                self.trigger_up('time_up');
+            } else {
+                self._updateTimer();
+                self.surveyTimerInterval = setInterval(self._updateTimer.bind(self), 1000);
+            }
+        });
     },
 
     // -------------------------------------------------------------------------
@@ -49,9 +48,13 @@ publicWidget.registry.SurveyTimerWidget = publicWidget.Widget.extend({
     /**
     * This function is responsible for the visual update of the timer DOM every second.
     * When the time runs out, it triggers a 'time_up' event to notify the parent widget.
+    *
+    * We use a diff in millis and not a second, that we round to the nearest second.
+    * Indeed, a difference of 999 millis is interpreted as 0 second by moment, which is problematic
+    * for our use case.
     */
     _updateTimer: function () {
-        var timeLeft = this.countDownDate.diff(moment.utc(), 'seconds');
+        var timeLeft = Math.round(this.countDownDate.diff(moment.utc(), 'milliseconds') / 1000);
 
         if (timeLeft >= 0) {
             var timeLeftMinutes = parseInt(timeLeft / 60);