tor-browser

commit 7f7c96f16bc5e6f045bcd1bb3cfdf7974f30903e
parent 66b92d074cc35c9b5b2a1e311908faf46c74b1e1
Author: Tom Ritter <tom@mozilla.com>
Date:   Mon, 29 Dec 2025 20:28:58 +0000

Bug 2005865: Add a test for the linux distro metric r=timhuang

Differential Revision: https://phabricator.services.mozilla.com/D276928

Diffstat:
M
toolkit/components/resistfingerprinting/tests/browser/browser.toml
 | 
3
+++
A
toolkit/components/resistfingerprinting/tests/browser/browser_usercharacteristics_linux_distro.js
 | 
55
+++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 58 insertions(+), 0 deletions(-)
diff --git a/toolkit/components/resistfingerprinting/tests/browser/browser.toml b/toolkit/components/resistfingerprinting/tests/browser/browser.toml
@@ -82,6 +82,9 @@ support-files = ["file_pdf.pdf"]
 
 ["browser_usercharacteristics_gamepads.js"]
 
+["browser_usercharacteristics_linux_distro.js"]
+skip-if = ["os != 'linux'"]
+
 ["browser_worker_granular_overrides.js"]
 
 ["browser_worker_overrides.js"]
diff --git a/toolkit/components/resistfingerprinting/tests/browser/browser_usercharacteristics_linux_distro.js b/toolkit/components/resistfingerprinting/tests/browser/browser_usercharacteristics_linux_distro.js
@@ -0,0 +1,55 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const emptyPage =
+  getRootDirectory(gTestPath).replace(
+    "chrome://mochitests/content",
+    "https://example.com"
+  ) + "empty.html";
+
+add_task(async function test_linux_distro_metrics() {
+  info("Testing Linux distribution metrics");
+
+  await BrowserTestUtils.withNewTab({ gBrowser, url: emptyPage }, () =>
+    GleanPings.userCharacteristics.testSubmission(
+      () => {
+        // Test os_distro metric
+        const osDistro = Glean.characteristics.osDistro.testGetValue();
+        Assert.ok(osDistro, "os_distro should have a value on Linux");
+        Assert.notEqual(osDistro, "", "os_distro should not be empty on Linux");
+        info(`os_distro: ${osDistro}`);
+
+        // Test os_distro_version metric
+        const osDistroVersion =
+          Glean.characteristics.osDistroVersion.testGetValue();
+        Assert.ok(
+          osDistroVersion,
+          "os_distro_version should have a value on Linux"
+        );
+        Assert.notEqual(
+          osDistroVersion,
+          "",
+          "os_distro_version should not be empty on Linux"
+        );
+        info(`os_distro_version: ${osDistroVersion}`);
+
+        // Test os_distro_id metric (may be empty if MOZ_DISTRIBUTION_ID not set)
+        const osDistroId = Glean.characteristics.osDistroId.testGetValue();
+        info(`os_distro_id: ${osDistroId || "(not set)"}`);
+      },
+      async () => {
+        const populated = TestUtils.topicObserved(
+          "user-characteristics-populating-data-done",
+          () => true
+        );
+        Services.obs.notifyObservers(
+          null,
+          "user-characteristics-testing-please-populate-data"
+        );
+        await populated;
+        GleanPings.userCharacteristics.submit();
+      }
+    )
+  );
+});