From f9e8c441cf253a8811d2a0987707b4118004a495 Mon Sep 17 00:00:00 2001
From: Jakob Guddas <github@jguddas.de>
Date: Mon, 16 May 2022 10:20:27 +0200
Subject: [PATCH] feat(eslint-plugin): added more test cases for
 prefer-nullish-coalescing rule

---
 .../rules/prefer-nullish-coalescing.test.ts     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/packages/eslint-plugin/tests/rules/prefer-nullish-coalescing.test.ts b/packages/eslint-plugin/tests/rules/prefer-nullish-coalescing.test.ts
index b5094608dab1..3f061ffd8573 100644
--- a/packages/eslint-plugin/tests/rules/prefer-nullish-coalescing.test.ts
+++ b/packages/eslint-plugin/tests/rules/prefer-nullish-coalescing.test.ts
@@ -77,6 +77,7 @@ x ?? 'foo';
     },
 
     ...[
+      'x !== undefined && x !== null ? "foo" : "bar";',
       'x !== null && x !== undefined && x !== 5 ? x : y',
       'x === null || x === undefined || x === 5 ? x : y',
       'x === undefined && x !== null ? x : y;',
@@ -95,6 +96,10 @@ x ?? 'foo';
       'null != x ? y : x;',
       'undefined != x ? y : x;',
       `
+declare const x: string | null;
+x === undefined ? x : y;
+      `,
+      `
 declare const x: string | undefined | null;
 x !== undefined ? x : y;
       `,
@@ -102,6 +107,18 @@ x !== undefined ? x : y;
 declare const x: string | undefined | null;
 x !== null ? x : y;
       `,
+      `
+declare const x: string | null | any;
+x === null ? x : y;
+      `,
+      `
+declare const x: string | null | unknown;
+x === null ? x : y;
+      `,
+      `
+declare const x: string | undefined;
+x === null ? x : y;
+      `,
     ].map(code => ({
       code: code.trim(),
       options: [{ ignoreTernaryTests: false }] as const,