diff --git a/src/app/converter/uridecoder.spec.ts b/src/app/converter/uridecoder.spec.ts
new file mode 100644
index 0000000..7e45297
--- /dev/null
+++ b/src/app/converter/uridecoder.spec.ts
@@ -0,0 +1,21 @@
+import {URIDecoder} from './uridecoder';
+
+describe('URIDecoder', () => {
+  let sut: URIDecoder;
+
+  beforeEach(() => sut = new URIDecoder());
+
+  it('should create an instance', () => {
+    expect(sut).toBeTruthy();
+  });
+
+  it('should have the id "uridecode"', () => {
+    expect(sut.getId()).toEqual('uridecode');
+  });
+
+  it('should decode "http://m%C3%A4nu:gh%C3%ABim@host:port/hi.there?oh=well#ya" ' +
+    'to "http://mänu:ghëim@host:port/hi.there?oh=well#ya"', () => {
+    expect(sut.convert('http://m%C3%A4nu:gh%C3%ABim@host:port/hi.there?oh=well#ya'))
+      .toEqual('http://mänu:ghëim@host:port/hi.there?oh=well#ya');
+  });
+});
diff --git a/src/app/converter/uriencoder.spec.ts b/src/app/converter/uriencoder.spec.ts
new file mode 100644
index 0000000..52f0a20
--- /dev/null
+++ b/src/app/converter/uriencoder.spec.ts
@@ -0,0 +1,21 @@
+import {URIEncoder} from './uriencoder';
+
+describe('URIEncoder', () => {
+  let sut: URIEncoder;
+
+  beforeEach(() => sut = new URIEncoder());
+
+  it('should create an instance', () => {
+    expect(sut).toBeTruthy();
+  });
+
+  it('should have the id "uriencode"', () => {
+    expect(sut.getId()).toEqual('uriencode');
+  });
+
+  it('should encode "http://mänu:ghëim@host:port/hi.there?oh=well#ya" ' +
+    'to "http://m%C3%A4nu:gh%C3%ABim@host:port/hi.there?oh=well#ya"', () => {
+    expect(sut.convert('http://mänu:ghëim@host:port/hi.there?oh=well#ya'))
+      .toEqual('http://m%C3%A4nu:gh%C3%ABim@host:port/hi.there?oh=well#ya');
+  });
+});