1 files changed, 76 insertions, 0 deletions
diff --git a/extensions/permissions/test/unit/test_permmanager_default_pref.js b/extensions/permissions/test/unit/test_permmanager_default_pref.js
new file mode 100644
index 0000000000..3759594bf5
--- /dev/null
+++ b/extensions/permissions/test/unit/test_permmanager_default_pref.js
@@ -0,0 +1,76 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function run_test() {
+  let principal =
+    Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      "https://example.org"
+    );
+
+  // Check that without a pref the default return value is UNKNOWN.
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.UNKNOWN_ACTION
+  );
+
+  // Check that the default return value changed after setting the pref.
+  Services.prefs.setIntPref(
+    "permissions.default.camera",
+    Services.perms.DENY_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.DENY_ACTION
+  );
+
+  // Check that functions that do not directly return a permission value still
+  // consider the permission as being set to its default.
+  Assert.equal(
+    null,
+    Services.perms.getPermissionObject(principal, "camera", false)
+  );
+
+  // Check that other permissions still return UNKNOWN.
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "geo"),
+    Services.perms.UNKNOWN_ACTION
+  );
+
+  // Check that the default return value changed after changing the pref.
+  Services.prefs.setIntPref(
+    "permissions.default.camera",
+    Services.perms.ALLOW_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.ALLOW_ACTION
+  );
+
+  // Check that the preference is ignored if there is a value.
+  Services.perms.addFromPrincipal(
+    principal,
+    "camera",
+    Services.perms.DENY_ACTION
+  );
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.DENY_ACTION
+  );
+  Assert.ok(
+    Services.perms.getPermissionObject(principal, "camera", false) != null
+  );
+
+  // The preference should be honored again, after resetting the permissions.
+  Services.perms.removeAll();
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.ALLOW_ACTION
+  );
+
+  // Should be UNKNOWN after clearing the pref.
+  Services.prefs.clearUserPref("permissions.default.camera");
+  Assert.equal(
+    Services.perms.testPermissionFromPrincipal(principal, "camera"),
+    Services.perms.UNKNOWN_ACTION
+  );
+}