From 30678a16842c1cb42405f9ae64c23c0eff952e4d Mon Sep 17 00:00:00 2001
From: Bryan Donovan <bdondo@gmail.com>
Date: Fri, 2 May 2014 16:34:42 -0700
Subject: [PATCH] adding reset() function for issue #5

---
 lib/caching.js       |  4 ++++
 lib/stores/memory.js |  7 ++++++
 test/caching.unit.js | 52 +++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 62 insertions(+), 1 deletion(-)

diff --git a/lib/caching.js b/lib/caching.js
index a8a3172..9e560db 100644
--- a/lib/caching.js
+++ b/lib/caching.js
@@ -57,6 +57,10 @@ var caching = function (args) {
 
     self.del = self.store.del.bind(self.store);
 
+    if (typeof self.store.reset === 'function') {
+        self.reset = self.store.reset.bind(self.store);
+    }
+
     return self;
 };
 
diff --git a/lib/stores/memory.js b/lib/stores/memory.js
index 7c27f66..351af0d 100644
--- a/lib/stores/memory.js
+++ b/lib/stores/memory.js
@@ -32,6 +32,13 @@ var memory_store = function (args) {
         }
     };
 
+    self.reset = function (cb) {
+        lru_cache.reset();
+        if (cb) {
+            process.nextTick(cb);
+        }
+    };
+
     return self;
 };
 
diff --git a/test/caching.unit.js b/test/caching.unit.js
index 4e00c38..b9b8a3a 100644
--- a/test/caching.unit.js
+++ b/test/caching.unit.js
@@ -1,3 +1,5 @@
+// TODO: These are really a mix of unit and integration tests.
+
 var assert = require('assert');
 var sinon = require('sinon');
 var support = require('./support');
@@ -96,6 +98,55 @@ describe("caching", function () {
         });
     });
 
+    describe("reset()", function () {
+        var key2;
+        var value2;
+
+        beforeEach(function (done) {
+            cache = caching({store: 'memory'});
+            key = support.random.string(20);
+            value = support.random.string();
+
+            cache.set(key, value, function (err) {
+                check_err(err);
+
+                key2 = support.random.string(20);
+                value2 = support.random.string();
+
+                cache.set(key, value, done);
+            });
+        });
+
+        it("clears the cache", function (done) {
+            cache.reset(function (err) {
+                check_err(err);
+
+                cache.get(key, function (err, result) {
+                    assert.ok(!result);
+
+                    cache.get(key2, function (err, result) {
+                        assert.ok(!result);
+                        done();
+                    });
+                });
+            });
+        });
+
+        it("lets us clear the cache without a callback", function (done) {
+            cache.reset();
+            setTimeout(function () {
+                cache.get(key, function (err, result) {
+                    assert.ok(!result);
+
+                    cache.get(key2, function (err, result) {
+                        assert.ok(!result);
+                        done();
+                    });
+                });
+            }, 10);
+        });
+    });
+
     describe("wrap()", function () {
         describe("using memory (lru-cache) store", function () {
             var memory_store_stub;
@@ -282,7 +333,6 @@ describe("caching", function () {
                     });
                 });
             });
-
         });
     });