diff --git a/dev/js/spec/pipeSpec.js b/dev/js/spec/pipeSpec.js
new file mode 100644
index 0000000..46cd5b9
--- /dev/null
+++ b/dev/js/spec/pipeSpec.js
@@ -0,0 +1,92 @@
+define(['pipe'], function (pipeClass) {
+
+  describe('KorAP.Pipe', function () {
+    it('should be initializable', function () {
+      let p = pipeClass.create();
+      expect(p.size()).toEqual(0);
+    });
+
+    it('should be appendable', function () {
+      let p = pipeClass.create();
+      expect(p.size()).toEqual(0);
+      expect(p.toString()).toEqual('');
+      p.append('service1');
+      expect(p.size()).toEqual(1);
+      expect(p.toString()).toEqual('service1');
+      p.append('service2');
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service1,service2');
+
+      p.append('');
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service1,service2');
+    });
+    
+    it('should be prependable', function () {
+      let p = pipeClass.create();
+      expect(p.size()).toEqual(0);
+      expect(p.toString()).toEqual('');
+      p.prepend('service1');
+      expect(p.size()).toEqual(1);
+      expect(p.toString()).toEqual('service1');
+      p.prepend('service2');
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service2,service1');
+
+      p.prepend('');
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service2,service1');
+    });
+
+    it('should be trimmed', function () {
+      let p = pipeClass.create();
+      expect(p.size()).toEqual(0);
+      expect(p.toString()).toEqual('');
+      p.prepend('  service1  ');
+      expect(p.size()).toEqual(1);
+      expect(p.toString()).toEqual('service1');
+
+      p.prepend("\t service2 \t");
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service2,service1');
+
+      p.append('      ');
+      expect(p.size()).toEqual(2);
+      expect(p.toString()).toEqual('service2,service1');
+    });
+    
+    it('should be deletable', function () {
+      let p = pipeClass.create();
+      p.append('service1');
+      p.append('service2');
+      p.append('service3');
+      expect(p.toString()).toEqual('service1,service2,service3');
+      p.remove('service2')
+      expect(p.toString()).toEqual('service1,service3');
+
+      p = pipeClass.create();
+      p.append('service1');
+      p.append('service2');
+      p.append('service3');
+      expect(p.toString()).toEqual('service1,service2,service3');
+      p.remove('service1')
+      expect(p.toString()).toEqual('service2,service3');
+
+      p = pipeClass.create();
+      p.append('service1');
+      p.append('service2');
+      p.append('service3');
+      expect(p.toString()).toEqual('service1,service2,service3');
+      p.remove('service3')
+      expect(p.toString()).toEqual('service1,service2');      
+
+      p = pipeClass.create();
+      p.append('service1');
+      p.append('service2');
+      p.append('service3');
+      expect(p.toString()).toEqual('service1,service2,service3');
+      p.remove('service0')
+      expect(p.toString()).toEqual('service1,service2,service3');      
+    });
+  });
+});