diff --git a/test/test.end.test.js b/test/test.end.test.js
new file mode 100644
index 0000000..7f2d9c6
--- /dev/null
+++ b/test/test.end.test.js
@@ -0,0 +1,37 @@
+var Test = require('../lib/test');
+
+describe('test grant that calls end', function() {
+  
+  var grant = {};
+  grant.request = function(req) {}
+  grant.response = function(txn, res, next) {
+    res.end('Hello');
+  }
+  
+  describe('with an end callback', function() {
+    var res;
+  
+    before(function(done) {
+      var test = new Test(grant);
+      test.end(function(r) {
+        res = r;
+        done();
+      }).decide();
+    });
+  
+    it('should call end callback', function() {
+      expect(res.statusCode).to.be.equal(200);
+      expect(res.body).to.be.equal('Hello');
+    });
+  });
+  
+  describe('without an end callback', function() {
+    it('should throw an error', function() {
+      expect(function() {
+        var test = new Test(grant);
+        test.decide();
+      }).to.throw(Error, 'res#end should not be called');
+    });
+  });
+  
+});
diff --git a/test/test.next.test.js b/test/test.next.test.js
new file mode 100644
index 0000000..2f46c5b
--- /dev/null
+++ b/test/test.next.test.js
@@ -0,0 +1,63 @@
+var Test = require('../lib/test');
+
+describe('test grant that calls next', function() {
+  
+  var grant = {};
+  grant.request = function(req) {}
+  grant.response = function(txn, res, next) {
+    next()
+  }
+  
+  describe('with a next callback', function() {
+    var err;
+  
+    before(function(done) {
+      var test = new Test(grant);
+      test.next(function(e) {
+        err = e;
+        done();
+      }).decide();
+    });
+  
+    it('should call next callback', function() {
+      expect(err).to.be.undefined;
+    });
+  });
+  
+  describe('without a next callback', function() {
+    it('should throw an error', function() {
+      expect(function() {
+        var test = new Test(grant);
+        test.decide();
+      }).to.throw(Error, 'next should not be called');
+    });
+  });
+  
+});
+
+describe('test grant that calls next with error', function() {
+  
+  var grant = {};
+  grant.request = function(req) {}
+  grant.response = function(txn, res, next) {
+    next(new Error('oops'))
+  }
+  
+  describe('with a next callback', function() {
+    var err;
+  
+    before(function(done) {
+      var test = new Test(grant);
+      test.next(function(e) {
+        err = e;
+        done();
+      }).decide();
+    });
+  
+    it('should call next callback', function() {
+      expect(err).to.be.an.instanceOf(Error);
+      expect(err.message).to.equal('oops');
+    });
+  });
+  
+});