From 0c32702e56b4c60ee8d166e66a5fa4dbe5a9ee7f Mon Sep 17 00:00:00 2001
From: Sosuke Suzuki <sosuke.suzuki@dr-ubie.com>
Date: Thu, 13 Oct 2022 22:28:51 +0900
Subject: [PATCH] fix: add more invalid tests for global variable leaks

---
 tests/lib/rules/no-implicit-globals.js | 67 ++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/tests/lib/rules/no-implicit-globals.js b/tests/lib/rules/no-implicit-globals.js
index ded2cad2ecf..412ba766134 100644
--- a/tests/lib/rules/no-implicit-globals.js
+++ b/tests/lib/rules/no-implicit-globals.js
@@ -1551,6 +1551,73 @@ ruleTester.run("no-implicit-globals", rule, {
                     type: "VariableDeclarator"
                 }
             ]
+        },
+
+        // Global variable leaks
+        {
+            code: "/* exported foo */ foo = 1",
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "AssignmentExpression"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ foo = function() {};",
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "AssignmentExpression"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ foo = function*() {};",
+            parserOptions: { ecmaVersion: 2015 },
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "AssignmentExpression"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ window.foo = function() { bar = 1; }",
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "AssignmentExpression"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ (function() {}(foo = 1));",
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "AssignmentExpression"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ for (foo in {});",
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "ForInStatement"
+                }
+            ]
+        },
+        {
+            code: "/* exported foo */ for (foo of []);",
+            parserOptions: { ecmaVersion: 2015 },
+            errors: [
+                {
+                    message: leakMessage,
+                    type: "ForOfStatement"
+                }
+            ]
         }
     ]
 });