PigLatinTranslatorTest.java

import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

import java.util.Arrays;
import java.util.Collection;

import static org.junit.Assert.assertEquals;

@RunWith(Parameterized.class)
public class PigLatinTranslatorTest {

  private String englishPhrase;
  private String pigLatinTranslation;

  @Parameterized.Parameters(name = "{index}: expected \"{0}\" to translate to the pig latin phrase \"{1}\"")
  public static Collection<Object[]> data() {
    return Arrays.asList(new Object[][]{
      // Ay is added to words that start with vowels
      {"apple", "appleay"},
      {"ear", "earay"},
      {"igloo", "iglooay"},
      {"object", "objectay"},
      {"under", "underay"},

      // First letter and ay are moved to the end of words that start with consonants
      {"pig", "igpay"},
      {"koala", "oalakay"},
      {"yellow", "ellowyay"},
      {"xenon", "enonxay"},

      // Ch is treated like a single consonant
      {"chair", "airchay"},

      // Qu is treated like a single consonant
      {"queen", "eenquay"},

      // Qu and a single preceding consonant are treated like a single consonant
      {"square", "aresquay"},

      // Th is treated like a single consonant
      {"therapy", "erapythay"},

      // Thr is treated like a single consonant
      {"thrush", "ushthray"},

      // Sch is treated like a single consonant
      {"school", "oolschay"},

      // Yt is treated like a single vowel
      {"yttria", "yttriaay"},

      // Xr is treated like a single vowel
      {"xray", "xrayay"},

      {"rhythm", "ythmrhay"},

      {"my", "ymay"},

      // Phrases are translated
      {"quick fast run", "ickquay astfay unray"}
    });
  }

  public PigLatinTranslatorTest(String englishPhrase, String pigLatinTranslation) {
    this.englishPhrase = englishPhrase;
    this.pigLatinTranslation = pigLatinTranslation;
  }

  @Ignore
  @Test
  public void test() {
    assertEquals(pigLatinTranslation, new PigLatinTranslator().translate(englishPhrase));
  }

}