	@Test
	public void post_shouldPostUrlParametersAndGetResponse() throws IOException {

		Map<String, String> parameters = new TreeMap<>();
		parameters.put("one", "one");
		parameters.put("two", "two");
		
		ByteArrayOutputStream stream = new ByteArrayOutputStream();
		when(connection.getOutputStream()).thenReturn(stream);
		when(connection.getInputStream()).thenReturn(new ByteArrayInputStream("response".getBytes()));
		
		String response = client.post(parameters);
		
		verify(connection).setDoOutput(true);
		verify(connection).setDoInput(true);
		verify(connection).setRequestMethod("POST");
		verify(connection).setRequestProperty("Content-Length", String.valueOf(16));
		verify(connection).setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		
		assertThat(stream.toString(), is("&one=one&two=two"));
		assertThat(response, CoreMatchers.containsString("response"));
	}