1 files changed, 61 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js
new file mode 100644
index 0000000000..722e6b5dda
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/no-compare-against-boolean-literals.js
@@ -0,0 +1,61 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+
+var rule = require("../lib/rules/no-compare-against-boolean-literals");
+var RuleTester = require("eslint").RuleTester;
+
+const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 6 } });
+
+// ------------------------------------------------------------------------------
+// Tests
+// ------------------------------------------------------------------------------
+
+function callError(message) {
+  return [{ message, type: "BinaryExpression" }];
+}
+
+const MESSAGE = "Don't compare for inexact equality against boolean literals";
+
+ruleTester.run("no-compare-against-boolean-literals", rule, {
+  valid: [`if (!foo) {}`, `if (!!foo) {}`],
+  invalid: [
+    {
+      code: `if (foo == true) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (foo != true) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (foo == false) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (foo != false) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (true == foo) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (true != foo) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (false == foo) {}`,
+      errors: callError(MESSAGE),
+    },
+    {
+      code: `if (false != foo) {}`,
+      errors: callError(MESSAGE),
+    },
+  ],
+});