package com.atlassian.httpclient.api;
   
   import com.google.common.base.Charsets;
   import com.google.common.io.CharStreams;
   import org.junit.Test;
   
   import java.io.IOException;
   import java.io.InputStreamReader;
   
  import static junit.framework.Assert.assertEquals;
  
  public class DefaultFormBuilderTest {
      @Test
      public void testOneEmptyParam() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("foo");
          assertEquals("foo", toString(form));
      }
  
      @Test
      public void testTwoLikeEmptyParams() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("foo");
          form.addParam("foo");
          assertEquals("foo&foo", toString(form));
      }
  
      @Test
      public void testTwoEmptyParams() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("foo");
          form.addParam("bar");
          assertEquals("foo&bar", toString(form));
      }
  
      @Test
      public void testOneParam() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("foo", "bar");
          assertEquals("foo=bar", toString(form));
      }
  
      @Test
      public void testTwoLikeParams() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("one", "a");
          form.addParam("one", "b");
          assertEquals("one=a&one=b", toString(form));
      }
  
      @Test
      public void testTwoParams() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("one", "1");
          form.addParam("two", "2");
          assertEquals("one=1&two=2", toString(form));
      }
  
      @Test
      public void testUrlEncoding() {
          FormBuilder form = new DefaultFormBuilder();
          form.addParam("one param", "one value");
          form.addParam("two/param", "two/value");
          form.addParam("three∫param", "three∫value");
          form.addParam("four&param", "four&value");
          assertEquals("one+param=one+value&two%2Fparam=two%2Fvalue&three%E2%88%ABparam=three%E2%88%ABvalue&four%26param=four%26value", toString(form));
      }
  
      @Test
      public void testHeaders() {
          FormBuilder form = new DefaultFormBuilder();
          EntityBuilder.Entity entity = form.build();
          assertEquals("application/x-www-form-urlencoded; charset=UTF-8", entity.getHeaders().get("Content-Type"));
      }
  
      private static String toString(final FormBuilder form) {
          try {
              return CharStreams.toString(new InputStreamReader(form.build().getInputStream(), Charsets.UTF_8));
          } catch (IOException e) {
              throw new RuntimeException(e);
          }
      }
  }