@Test
  public void appendWithNullVaragsQueryParamValues() throws Exception {
    assertEquals("http://test.com/1?a=&b=",
        HttpRequest.append("http://test.com/1", "a", null, "b", null));
  }
Append params with null values

@throws Exception
lib/src/test/java/com/github/kevinsawicki/http/HttpRequestTest.java