From 62a768b40d3648be8c88c5a5ecf0bc05b34fe100 Mon Sep 17 00:00:00 2001
From: Karl Purkardt <karl.purkardt@nucleuscentral.com>
Date: Thu, 30 Jun 2016 15:21:34 +0100
Subject: [PATCH] Add test to catch issue with preserveCache not preserving
 cache correctly

---
 test/proxyquire-cache.js | 13 ++++++++++++-
 test/samples/count.js    |  4 ++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 test/samples/count.js

diff --git a/test/proxyquire-cache.js b/test/proxyquire-cache.js
index 19596f3..441e970 100644
--- a/test/proxyquire-cache.js
+++ b/test/proxyquire-cache.js
@@ -21,6 +21,17 @@ describe("Proxyquire", function() {
   });
 
   describe('preserveCache()', function() {
+
+    it('should return a cache of the module after first proxyquire call', function() {
+        var proxyquire = require('..').preserveCache();
+        var count1 = proxyquire('./samples/count', {});
+        var count2 = proxyquire('./samples/count', {});
+        var count3 = proxyquire('./samples/count', {});
+        assert.equal(count1(), 1);
+        assert.equal(count2(), 2);
+        assert.equal(count3(), 3);
+    });
+
     it('returns a reference to itself, so it can be chained', function() {
       var proxyquire = require('..');
       assert.equal(proxyquire.preserveCache(), proxyquire);
@@ -109,4 +120,4 @@ describe("Proxyquire", function() {
       })
     });
   });
-});
\ No newline at end of file
+});
diff --git a/test/samples/count.js b/test/samples/count.js
new file mode 100644
index 0000000..019ed95
--- /dev/null
+++ b/test/samples/count.js
@@ -0,0 +1,4 @@
+var count = 0;
+module.exports = function() {
+    return ++count;
+};