diff --git a/src/wireframes/model/factories.spec.ts b/src/wireframes/model/factories.spec.ts
new file mode 100644
index 0000000..4ecfd0f
--- /dev/null
+++ b/src/wireframes/model/factories.spec.ts
@@ -0,0 +1,84 @@
+/*
+ * mydraft.cc
+ *
+ * @license
+ * Copyright (c) Sebastian Stehle. All rights reserved.
+*/
+
+import { ColorConfigurable, NumberConfigurable, SelectionConfigurable, SliderConfigurable, TextConfigurable, ToggleConfigurable } from './configurables';
+import { MinSizeConstraint, SizeConstraint, TextHeightConstraint, TextSizeConstraint } from './constraints';
+import { DefaultConfigurableFactory, DefaultConstraintFactory } from './factories';
+
+describe('DefaultConstraintFactory', () => {
+    const factory = DefaultConstraintFactory.INSTANCE;
+
+    it('should create size constraint', () => {
+        const constraint = factory.size();
+
+        expect(constraint).toBeInstanceOf(SizeConstraint);
+    });
+
+    it('should create min size constraint', () => {
+        const constraint = factory.minSize();
+
+        expect(constraint).toBeInstanceOf(MinSizeConstraint);
+    });
+
+    it('should create text height constraint', () => {
+        const constraint = factory.textHeight(50);
+
+        expect(constraint).toBeInstanceOf(TextHeightConstraint);
+    });
+
+    it('should create text size constraint', () => {
+        const constraint = factory.textSize(50);
+
+        expect(constraint).toBeInstanceOf(TextSizeConstraint);
+    });
+});
+
+describe('DefaultConfigurableFactory', () => {
+    const factory = DefaultConfigurableFactory.INSTANCE;
+
+    it('should create selection configurable', () => {
+        const constraint = factory.selection('my-name', 'my-label', ['A', 'B', 'C']);
+
+        expect(constraint).toBeInstanceOf(SelectionConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label', options: ['A', 'B', 'C'] });
+    });
+
+    it('should create slider configurable', () => {
+        const constraint = factory.slider('my-name', 'my-label', 50, 100);
+
+        expect(constraint).toBeInstanceOf(SliderConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label', min: 50, max: 100 });
+    });
+
+    it('should create number configurable', () => {
+        const constraint = factory.number('my-name', 'my-label', 50, 100);
+
+        expect(constraint).toBeInstanceOf(NumberConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label', min: 50, max: 100 });
+    });
+
+    it('should create color configurable', () => {
+        const constraint = factory.color('my-name', 'my-label');
+
+        expect(constraint).toBeInstanceOf(ColorConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label' });
+    });
+
+    it('should create text configurable', () => {
+        const constraint = factory.text('my-name', 'my-label');
+
+        expect(constraint).toBeInstanceOf(TextConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label' });
+    });
+
+    it('should create toggle configurable', () => {
+        const constraint = factory.toggle('my-name', 'my-label');
+
+        expect(constraint).toBeInstanceOf(ToggleConfigurable);
+        expect(constraint).toEqual({ name: 'my-name', label: 'my-label' });
+    });
+});
\ No newline at end of file