2 files changed, 90 insertions, 0 deletions
diff --git a/toolkit/mozapps/webextensions/test/addons/test_symbol/bootstrap.js b/toolkit/mozapps/webextensions/test/addons/test_symbol/bootstrap.js
new file mode 100644
index 000000000..4eb8b4875
--- /dev/null
+++ b/toolkit/mozapps/webextensions/test/addons/test_symbol/bootstrap.js
@@ -0,0 +1,62 @@
+Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/AddonManager.jsm");
+
+const PASS_PREF = "symboltest.instanceid.pass";
+const FAIL_BOGUS_PREF = "symboltest.instanceid.fail_bogus";
+const FAIL_ID_PREF = "symboltest.instanceid.fail_bogus";
+const ADDON_ID = "test_symbol@tests.mozilla.org";
+
+function install(data, reason) {}
+
+// normally we would use BootstrapMonitor here, but we need a reference to
+// the symbol inside `XPIProvider.jsm`.
+function startup(data, reason) {
+  Services.prefs.setBoolPref(PASS_PREF, false);
+  Services.prefs.setBoolPref(FAIL_BOGUS_PREF, false);
+  Services.prefs.setBoolPref(FAIL_ID_PREF, false);
+
+  // test with the correct symbol
+  if (data.hasOwnProperty("instanceID") && data.instanceID) {
+    AddonManager.getAddonByInstanceID(data.instanceID)
+      .then(addon => {
+        if (addon.id == ADDON_ID) {
+          Services.prefs.setBoolPref(PASS_PREF, true);
+        }
+      }).catch(err => {
+        throw Error("no addon found for symbol");
+      });
+
+  }
+
+  // test with a totally bogus symbol
+  AddonManager.getAddonByInstanceID(Symbol("bad symbol"))
+    .then(addon => {
+      // there is no symbol by this name, so null should be returned
+      if (addon == null) {
+        Services.prefs.setBoolPref(FAIL_BOGUS_PREF, true);
+      } else {
+        throw Error("bad symbol should not match:", addon);
+      }
+    }).catch(err => {
+      throw Error("promise should not have rejected: " + err);
+    });
+
+  // try to make a matching symbol - this should fail because it's not a
+  // reference to the same symbol stored inside the addons manager.
+  AddonManager.getAddonByInstanceID(Symbol(ADDON_ID))
+    .then(addon => {
+      // there is no symbol by this name, so null should be returned
+      if (addon == null) {
+        Services.prefs.setBoolPref(FAIL_ID_PREF, true);
+      } else {
+        throw Error("bad symbol should not match:", addon);
+      }
+    }).catch(err => {
+      throw Error("promise should not have rejected: " + err);
+    });
+
+}
+
+function shutdown(data, reason) {}
+
+function uninstall(data, reason) {}
diff --git a/toolkit/mozapps/webextensions/test/addons/test_symbol/install.rdf b/toolkit/mozapps/webextensions/test/addons/test_symbol/install.rdf
new file mode 100644
index 000000000..adccda552
--- /dev/null
+++ b/toolkit/mozapps/webextensions/test/addons/test_symbol/install.rdf
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+
+<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+     xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+
+  <Description about="urn:mozilla:install-manifest">
+    <em:id>test_symbol@tests.mozilla.org</em:id>
+    <em:version>1.0</em:version>
+    <em:bootstrap>true</em:bootstrap>
+
+    <!-- Front End MetaData -->
+    <em:name>Test Symbol</em:name>
+    <em:description>Test Description</em:description>
+
+    <em:iconURL>chrome://foo/skin/icon.png</em:iconURL>
+    <em:aboutURL>chrome://foo/content/about.xul</em:aboutURL>
+    <em:optionsURL>chrome://foo/content/options.xul</em:optionsURL>
+
+    <em:targetApplication>
+      <Description>
+        <em:id>xpcshell@tests.mozilla.org</em:id>
+        <em:minVersion>1</em:minVersion>
+        <em:maxVersion>1</em:maxVersion>
+      </Description>
+    </em:targetApplication>
+
+  </Description>
+</RDF>