1 files changed, 44 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js
new file mode 100644
index 0000000000..4afe8a70ac
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/rules/mark-test-function-used.js
@@ -0,0 +1,44 @@
+/**
+ * @fileoverview Simply marks `test` (the test method) or `run_test` as used
+ * when in mochitests or xpcshell tests respectively. This avoids ESLint telling
+ * us that the function is never called.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+"use strict";
+
+var helpers = require("../helpers");
+
+module.exports = {
+  // This rule currently has no messages.
+  // eslint-disable-next-line eslint-plugin/prefer-message-ids
+  meta: {
+    docs: {
+      url: "https://firefox-source-docs.mozilla.org/code-quality/lint/linters/eslint-plugin-mozilla/rules/mark-test-function-used.html",
+    },
+    schema: [],
+    type: "problem",
+  },
+
+  create(context) {
+    return {
+      Program() {
+        let testType = helpers.getTestType(context);
+        if (testType == "browser") {
+          context.markVariableAsUsed("test");
+        }
+
+        if (testType == "xpcshell") {
+          context.markVariableAsUsed("run_test");
+        }
+
+        if (helpers.getIsSjs(context)) {
+          context.markVariableAsUsed("handleRequest");
+        }
+      },
+    };
+  },
+};