1 files changed, 50 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-osfile.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-osfile.js
new file mode 100644
index 0000000000..c8eb3f2f5f
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/reject-osfile.js
@@ -0,0 +1,50 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+
+var rule = require("../lib/rules/reject-osfile");
+var RuleTester = require("eslint").RuleTester;
+
+const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8 } });
+
+// ------------------------------------------------------------------------------
+// Tests
+// ------------------------------------------------------------------------------
+
+function invalidError(os, util) {
+  let message = `${os} is deprecated. You should use ${util} instead.`;
+  return [{ message, type: "MemberExpression" }];
+}
+
+ruleTester.run("reject-osfile", rule, {
+  valid: ["IOUtils.write()"],
+  invalid: [
+    {
+      code: "OS.File.write()",
+      errors: invalidError("OS.File", "IOUtils"),
+    },
+    {
+      code: "lazy.OS.File.write()",
+      errors: invalidError("OS.File", "IOUtils"),
+    },
+  ],
+});
+
+ruleTester.run("reject-osfile", rule, {
+  valid: ["PathUtils.join()"],
+  invalid: [
+    {
+      code: "OS.Path.join()",
+      errors: invalidError("OS.Path", "PathUtils"),
+    },
+    {
+      code: "lazy.OS.Path.join()",
+      errors: invalidError("OS.Path", "PathUtils"),
+    },
+  ],
+});