Adding tests.

Author: kevinswiber

.gitignore

@@ -1 +1,2 @@
 node_modules
+test/tmp

test.js renamed to example.js

@@ -1,7 +1,10 @@
 var bufferEqual = require('buffer-equal');
 
 module.exports = function(db, options) {
-  new MedeaTtl(db, options);
+  if (!db._ttl) {
+    new MedeaTtl(db, options);
+  }
+
   return db;
 };
 
@@ -13,6 +16,7 @@ var MedeaTtl = function(db, options) {
   options = options || {};
 
   this.db = db;
+  this.db._ttl = this;
   this.frequency = options.frequency || 5 * 60 * 1000;
   this.prefix = options.prefix || 'ttl-';
 

medea_ttl.js

@@ -8,10 +8,11 @@
     "medea": "^0.12.0"
   },
   "devDependencies": {
-    "medea": "~0.11.0"
+    "medea": "~0.11.0",
+    "mocha": "^1.21.4"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha -R spec"
   },
   "keywords": [
     "medea",

package.json

@@ -0,0 +1,80 @@
+var assert = require('assert');
+var medea = require('medea');
+var ttl = require('../');
+
+describe('MedeaTtl', function() {
+  var db = ttl(medea());
+  var dir = __dirname + '/tmp/medea_ttl_test';
+
+  before(function(done) {
+    db.open(dir, done);
+  });
+
+  it('should assign itself to db._ttl', function() {
+    assert(!!db._ttl);
+  });
+
+  describe('#open', function() {
+    it('should start the cleanup interval', function() {
+      assert(!!db._ttl.interval);
+    });
+  });
+
+  describe('#close', function() {
+    it('should stop the cleanup interval', function(done) {
+      db.close(function() {
+        assert(!!db._ttl.interval);
+        db.open(dir, done);
+      });
+    });
+  });
+
+  describe('#put', function() {
+    it('should take a ttl parameter', function(done) {
+      db.put('hello', 'world', 1, function(err, val) {
+        assert(!err);
+        done();
+      });
+    });
+  });
+
+  describe('#get', function() {
+    it('should return a fresh value', function(done) {
+      db.put('hello', 'world', 100, function(err, val) {
+        setTimeout(function() {
+          db.get('hello', function(err, val) {
+            assert(!err);
+            assert.equal(val, 'world');
+            done();
+          });
+        }, 50);
+      });
+    });
+
+    it('should not return an expired value', function(done) {
+      db.put('hello', 'world', 50, function(err, val) {
+        setTimeout(function() {
+          db.get('hello', function(err, val) {
+            assert(!err);
+            assert(!val);
+            done();
+          });
+        }, 50);
+      });
+    });
+  });
+
+  describe('#remove', function() {
+    it('should auto-expire a ttl value', function(done) {
+      db.put('hello', 'world', 10000, function(err, val) {
+        db.remove('hello', function(err) {
+          db.get('hello', function(err, val) {
+            assert(!err);
+            assert(!val);
+            done();
+          });
+        });
+      });
+    });
+  });
+});