Make tests not to run automatically on dev mode startup anymore.

src/bg/main.js

@@ -232,11 +232,7 @@
           Commands.install();
 
           this.devMode = (await browser.management.getSelf()).installType === "development";
-          if (this.local.debug) {
-            if (this.devMode) {
-              include("/test/run.js");
-            }
-          } else {
+          if (!this.local.debug) {
             debug = () => {}; // suppress verbosity
           }
         });
@@ -251,6 +247,10 @@
       log("STOPPED");
     },
 
+    test() {
+      include("/test/run.js");
+    },
+
     async savePolicy() {
       if (this.policy) {
         await Storage.set("sync", {