From 2ca65d5451afcefac451b68e58ff1e898c428c55 Mon Sep 17 00:00:00 2001
From: Andres Suarez <zertosh@gmail.com>
Date: Thu, 23 Mar 2017 15:46:48 -0400
Subject: [PATCH] Add type parameter scope tests (babel/babel-eslint#454)

---
 .../test/non-regression.js                    | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/eslint/babel-eslint-parser/test/non-regression.js b/eslint/babel-eslint-parser/test/non-regression.js
index 107802ce50..711aa25edd 100644
--- a/eslint/babel-eslint-parser/test/non-regression.js
+++ b/eslint/babel-eslint-parser/test/non-regression.js
@@ -250,6 +250,21 @@ describe("verify", () => {
       );
     });
 
+    it("type parameter scope (classes)", () => {
+      verifyAndAssertMessages(
+        unpad(`
+          T;
+          class Foo<T> {}
+          T;
+          new Foo();
+        `),
+        { "no-unused-vars": 1, "no-undef": 1 },
+        [ "1:1 'T' is not defined. no-undef",
+          "2:11 'T' is defined but never used. no-unused-vars",
+          "3:1 'T' is not defined. no-undef" ]
+      );
+    });
+
     it("type parameter bounds (interfaces)", () => {
       verifyAndAssertMessages(
         unpad(`
@@ -264,6 +279,21 @@ describe("verify", () => {
       );
     });
 
+    it("type parameter scope (interfaces)", () => {
+      verifyAndAssertMessages(
+        unpad(`
+          T;
+          interface Foo<T> {};
+          T;
+          Foo;
+        `),
+        { "no-unused-vars": 1, "no-undef": 1 },
+        [ "1:1 'T' is not defined. no-undef",
+          "2:15 'T' is defined but never used. no-unused-vars",
+          "3:1 'T' is not defined. no-undef" ]
+      );
+    });
+
     it("type parameter bounds (type aliases)", () => {
       verifyAndAssertMessages(
         unpad(`
@@ -279,6 +309,21 @@ describe("verify", () => {
       );
     });
 
+    it("type parameter scope (type aliases)", () => {
+      verifyAndAssertMessages(
+        unpad(`
+          T;
+          type Foo<T> = {};
+          T;
+          Foo;
+        `),
+        { "no-unused-vars": 1, "no-undef": 1 },
+        [ "1:1 'T' is not defined. no-undef",
+          "2:10 'T' is defined but never used. no-unused-vars",
+          "3:1 'T' is not defined. no-undef" ]
+      );
+    });
+
     it("type parameter bounds (functions)", () => {
       verifyAndAssertMessages(
         unpad(`
@@ -292,6 +337,21 @@ describe("verify", () => {
       );
     });
 
+    it("type parameter scope (functions)", () => {
+      verifyAndAssertMessages(
+        unpad(`
+          T;
+          function log<T>() {}
+          T;
+          log;
+        `),
+        { "no-unused-vars": 1, "no-undef": 1 },
+        [ "1:1 'T' is not defined. no-undef",
+          "2:14 'T' is defined but never used. no-unused-vars",
+          "3:1 'T' is not defined. no-undef" ]
+      );
+    });
+
     it("nested type annotations", () => {
       verifyAndAssertMessages(
         unpad(`