1 files changed, 64 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/tests/unit/test_TelemetryAndroidEnvironment.js b/toolkit/components/telemetry/tests/unit/test_TelemetryAndroidEnvironment.js
new file mode 100644
index 0000000000..b5035ff56c
--- /dev/null
+++ b/toolkit/components/telemetry/tests/unit/test_TelemetryAndroidEnvironment.js
@@ -0,0 +1,64 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+/* Android-only TelemetryEnvironment xpcshell test that ensures that the device data is stored in the Environment.
+ */
+
+const { TelemetryEnvironment } = ChromeUtils.importESModule(
+  "resource://gre/modules/TelemetryEnvironment.sys.mjs"
+);
+
+/**
+ * Check that a value is a string and not empty.
+ *
+ * @param aValue The variable to check.
+ * @return True if |aValue| has type "string" and is not empty, False otherwise.
+ */
+function checkString(aValue) {
+  return typeof aValue == "string" && aValue != "";
+}
+
+/**
+ * If value is non-null, check if it's a valid string.
+ *
+ * @param aValue The variable to check.
+ * @return True if it's null or a valid string, false if it's non-null and an invalid
+ *         string.
+ */
+function checkNullOrString(aValue) {
+  if (aValue) {
+    return checkString(aValue);
+  } else if (aValue === null) {
+    return true;
+  }
+
+  return false;
+}
+
+/**
+ * If value is non-null, check if it's a boolean.
+ *
+ * @param aValue The variable to check.
+ * @return True if it's null or a valid boolean, false if it's non-null and an invalid
+ *         boolean.
+ */
+function checkNullOrBool(aValue) {
+  return aValue === null || typeof aValue == "boolean";
+}
+
+function checkSystemSection(data) {
+  Assert.ok("system" in data, "There must be a system section in Environment.");
+  // Device data is only available on Android.
+  if (gIsAndroid) {
+    let deviceData = data.system.device;
+    Assert.ok(checkNullOrString(deviceData.model));
+    Assert.ok(checkNullOrString(deviceData.manufacturer));
+    Assert.ok(checkNullOrString(deviceData.hardware));
+    Assert.ok(checkNullOrBool(deviceData.isTablet));
+  }
+}
+
+add_task(async function test_systemEnvironment() {
+  let environmentData = TelemetryEnvironment.currentEnvironment;
+  checkSystemSection(environmentData);
+});