--- a/toolkit/mozapps/extensions/test/browser/browser_bug567127.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_bug567127.js
@@ -36,16 +36,20 @@ function promisePopupNotificationShown(n
 }
 
 async function checkInstallConfirmation(...names) {
   let notificationCount = 0;
   let observer = {
     observe(aSubject, aTopic, aData) {
       var installInfo = aSubject.wrappedJSObject;
       isnot(installInfo.browser, null, "Notification should have non-null browser");
+      Assert.deepEqual(installInfo.installs[0].installTelemetryInfo, {
+        source: "about:addons",
+        method: "install-from-file",
+      }, "Got the expected installTelemetryInfo");
       notificationCount++;
     }
   };
   Services.obs.addObserver(observer, "addon-install-started");
 
   let results = [];
 
   let promise = promisePopupNotificationShown("addon-webext-permissions");

--- a/toolkit/mozapps/extensions/test/browser/browser_dragdrop.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_dragdrop.js
@@ -41,16 +41,23 @@ function promisePopupNotificationShown(n
 }
 
 async function checkInstallConfirmation(...names) {
   let notificationCount = 0;
   let observer = {
     observe(aSubject, aTopic, aData) {
       var installInfo = aSubject.wrappedJSObject;
       isnot(installInfo.browser, null, "Notification should have non-null browser");
+
+      is(installInfo.installs.length, 1, "Got one AddonInstall instance as expected");
+
+      Assert.deepEqual(installInfo.installs[0].installTelemetryInfo,
+                       {source: "about:addons", method: "url"},
+                       "Got the expected installTelemetryInfo");
+
       notificationCount++;
     }
   };
   Services.obs.addObserver(observer, "addon-install-started");
 
   let results = [];
 
   let promise = promisePopupNotificationShown("addon-webext-permissions");

--- a/toolkit/mozapps/extensions/test/browser/browser_webapi_install.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_webapi_install.js
@@ -208,16 +208,20 @@ function makeRegularTest(options, what) 
 
     // Sanity check to ensure that the test in makeInstallTest() that
     // installs.size == 0 means we actually did clean up.
     ok(AddonManager.webAPI.installs.size > 0, "webAPI is tracking the AddonInstall");
 
     let addons = await promiseAddonsByIDs([ID]);
     isnot(addons[0], null, "Found the addon");
 
+    // Check that the expected installTelemetryInfo has been stored in the addon details.
+    Assert.deepEqual(addons[0].installTelemetryInfo, {source: "test-hosts", method: "amWebAPI"},
+                     "Got the expected addon.installTelemetryInfo");
+
     await addons[0].uninstall();
 
     addons = await promiseAddonsByIDs([ID]);
     is(addons[0], null, "Addon was uninstalled");
   });
 }
 
 add_task(makeRegularTest({url: XPI_URL}, "a basic install works"));

--- a/toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_trigger.js
+++ b/toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_trigger.js
@@ -23,16 +23,18 @@ function test() {
 }
 
 function confirm_install(panel) {
   is(panel.getAttribute("name"), "XPI Test", "Should have seen the name");
   return true;
 }
 
 function install_ended(install, addon) {
+  Assert.deepEqual(install.installTelemetryInfo, {source: "test-hosts", method: "installTrigger"},
+                   "Got the expected install.installTelemetryInfo");
   install.cancel();
 }
 
 const finish_test = async function(count) {
   is(count, 1, "1 Add-on should have been successfully installed");
 
   Services.perms.remove(makeURI("http://example.com"), "install");
 

--- a/toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_url.js
+++ b/toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_url.js
@@ -13,16 +13,18 @@ function test() {
 }
 
 function confirm_install(panel) {
   is(panel.getAttribute("name"), "XPI Test", "Should have seen the name");
   return true;
 }
 
 function install_ended(install, addon) {
+  Assert.deepEqual(install.installTelemetryInfo, {source: "system-principal", method: "url"},
+                   "Got the expected install.installTelemetryInfo");
   install.cancel();
 }
 
 function finish_test(count) {
   is(count, 1, "1 Add-on should have been successfully installed");
 
   gBrowser.removeCurrentTab();
   Harness.finish();

--- a/toolkit/mozapps/extensions/test/xpinstall/browser_datauri.js
+++ b/toolkit/mozapps/extensions/test/xpinstall/browser_datauri.js
@@ -28,16 +28,20 @@ function runTest() {
     "Location": "data:text/html,<script>window.location.href='" + TESTROOT + "amosigned.xpi'</script>"
   });
 
   gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser);
   gBrowser.loadURI(TESTROOT + "redirect.sjs?mode=redirect");
 }
 
 function install_blocked(installInfo) {
+  is(installInfo.installs.length, 1, "Got one AddonInstall instance as expected");
+  Assert.deepEqual(installInfo.installs[0].installTelemetryInfo,
+                   {source: "null-principal", method: "url"},
+                   "Got the expected install.installTelemetryInfo");
 }
 
 function finish_test(count) {
   is(count, 0, "No add-ons should have been installed");
   Services.perms.remove(makeURI("http://example.com"), "install");
 
   gBrowser.removeCurrentTab();
   Harness.finish();