From 64efa0d6a4a409dcdcdfe5eb2dee83a114b87e96 Mon Sep 17 00:00:00 2001
From: Ash Wilson <smashwilson@github.com>
Date: Thu, 8 Feb 2018 09:58:54 -0500
Subject: [PATCH] Unit tests for symlink edge cases

---
 test/events/symlink.test.js | 38 +++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/test/events/symlink.test.js b/test/events/symlink.test.js
index a92fa908..1641ea3f 100644
--- a/test/events/symlink.test.js
+++ b/test/events/symlink.test.js
@@ -41,4 +41,42 @@ describe('watching beneath symlinked directories', function () {
       until('real path event arrives', realMatcher.allEvents({action: 'created', kind: 'file', path: realFile}))
     ])
   })
+
+  it("doesn't die horribly on a symlink loop", async function () {
+    const parentDir = fixture.watchPath('parent')
+    const subDir = fixture.watchPath('parent', 'child')
+    const linkName = fixture.watchPath('parent', 'child', 'turtles')
+    const fileName = fixture.watchPath('parent', 'file.txt')
+
+    await fs.mkdirs(subDir)
+    await fs.symlink(parentDir, linkName)
+
+    const matcher = new EventMatcher(fixture)
+    await matcher.watch([''], {})
+
+    await fs.writeFile(fileName, 'contents\n')
+
+    await until('creation event arrives', matcher.allEvents(
+      {action: 'created', kind: 'file', path: fileName}
+    ))
+  })
+
+  it("doesn't die horribly on a broken symlink", async function () {
+    const targetName = fixture.watchPath('target.txt')
+    const linkName = fixture.watchPath('symlink.txt')
+    const fileName = fixture.watchPath('file.txt')
+
+    await fs.writeFile(targetName, 'original\n')
+    await fs.symlink(targetName, linkName)
+    await fs.unlink(targetName)
+
+    const matcher = new EventMatcher(fixture)
+    await matcher.watch([''], {})
+
+    await fs.writeFile(fileName, 'stuff\n')
+
+    await until('creation event arrives', matcher.allEvents(
+      {action: 'created', kind: 'file', path: fileName}
+    ))
+  })
 })