/src/test/java/org/scribe/utils/OAuthEncoderTest.java

package org.scribe.utils;

import org.junit.*;
import static org.junit.Assert.*;

/**
 * @author: Pablo Fernandez
 */
public class OAuthEncoderTest
{
  @Test
  public void shouldPercentEncodeString()
  {
    String plain = "this is a test &^";
    String encoded = "this%20is%20a%20test%20%26%5E";
    assertEquals(encoded, OAuthEncoder.encode(plain));
  }

  @Test
  public void shouldFormURLDecodeString()
  {
    String encoded = "this+is+a+test+%26%5E";
    String plain = "this is a test &^";
    assertEquals(plain, OAuthEncoder.decode(encoded));
  }

  @Test
  public void shouldPercentEncodeAllSpecialCharacters()
  {
    String plain = "!*'();:@&=+$,/?#[]";
    String encoded = "%21%2A%27%28%29%3B%3A%40%26%3D%2B%24%2C%2F%3F%23%5B%5D";
    assertEquals(encoded, OAuthEncoder.encode(plain));
    assertEquals(plain, OAuthEncoder.decode(encoded));
  }

  @Test
  public void shouldNotPercentEncodeReservedCharacters()
  {
    String plain = "abcde123456-._~";
    String encoded = plain;
    assertEquals(encoded, OAuthEncoder.encode(plain));
  }

  @Test(expected = IllegalArgumentException.class)
  public void shouldThrowExceptionIfStringToEncodeIsNull()
  {
    String toEncode = null;
    OAuthEncoder.encode(toEncode);
  }

  @Test(expected = IllegalArgumentException.class)
  public void shouldThrowExceptionIfStringToDecodeIsNull()
  {
    String toDecode = null;
    OAuthEncoder.decode(toDecode);
  }

  @Test
  public void shouldPercentEncodeCorrectlyTwitterCodingExamples()
  {
    // These tests are part of the Twitter dev examples here -> https://dev.twitter.com/docs/auth/percent-encoding-parameters
    String sources[] = {"Ladies + Gentlemen", "An encoded string!", "Dogs, Cats & Mice"};
    String encoded[] = {"Ladies%20%2B%20Gentlemen", "An%20encoded%20string%21", "Dogs%2C%20Cats%20%26%20Mice"};

    for(int i = 0; i < sources.length; i++)
    {
      Assert.assertEquals(encoded[i], OAuthEncoder.encode(sources[i]));
    }
  }
}