Bug 1565858 - aboutdebugging sidebar test should use longer timings i…

…n debug builds r=daisuke, a=test-only

When running in debug builds, the test will use the default timings instead of the faster ones.

Differential Revision: https://phabricator.services.mozilla.com/D46476

--HG--
extra : source : c758cfb21827704d62ebd1966ee7dc2c4090887b
extra : intermediate-source : d02ca673ea9e10bd7e09c76aefe0e84f0fbbced5

devtools/client/aboutdebugging-new/test/browser/browser_aboutdebugging_sidebar_connection_state.js

@@ -176,6 +176,13 @@ add_task(async function() {
 });
 
 async function setupPreferences() {
+  if (SpecialPowers.isDebugBuild) {
+    // On debug builds, reducing the timings might lead to skip the "warning"
+    // state and will block the test execution.
+    // Do not change the timings in debug builds.
+    return;
+  }
+
   await pushPref(
     "devtools.aboutdebugging.test-connection-timing-out-delay",
     CONNECTION_TIMING_OUT_DELAY