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Pig Latin

layout: default title: Project: Pig Latin

Application Overview

You are going to write a translation program that converts English into Pig Latin.

Class structure

The class that does the conversion will extend an abstract class that partially implements an interface.

  • Translator - interface for translation with two methods:
String translateWord(String word);
String translateText(String text);

  • AbstractTranslator - implements Translator, implements translateText which breaks its input into words, passing each word to translateWord to be translated, and builds a new string of the translated text.

  • PigLatinTranslator - extends AbstractTranslator, implements translateWord.

  • You will write JUnit tests for this class.

  • TranslatorApp - has main method, takes user input, calls Translator method(s).

Translator UML

JUnit tests

Create and implement JUnit tests for your PigLatinTranslator based on the Pig Latin Rules . Also be sure to handle null inputs. Methods should be well-named to reflect the class's functionality, such as

@Test
public void test_translateWord_returns_empty_String_for_null_input(){
  //tests
}

@Test
public void test_translateWord_for_word_starting_with_consonant_and_vowel_moves_consonant_to_end_of_word_and_adds_ay(){
  //tests
}

// etc.

Write JUnit tests before method implementations.

Prerequisites

Create a Translation application with appropriate package(s).

Define the Translator interface, the AbstractTranslator abstract class, and the PigLatinTranslator concrete class, with methods stubbed in each.

Create a new Source Folder for tests, and add the same package(s) to it.

Create a JUnit test case for the PigLatinTranslator class.

Create JUnit tests for PigLatinTranslator.

Implement AbstractTranslator.translateText.

Implement PigLatinTranslator.translateWord, and get all your tests to pass.

User Story #1

User is prompted for a word.

User Story #2

The word the user entered is displayed, along with the pig latin equivalent.

User Story #3

The user can enter any number of words (a sentence/paragraph), and it will be displayed along with the pig latin translation.

Stretch Goals

  • Make sure everything is encapsulated within methods, only call one method in your main.

  • Did you use StringBuilder to complete this?

  • In the translated text, preserve all white space and punctuation from the input text.

  • Preserve capitalization: translate "Hello, my name is Melvin!" to "Ellohay, ymay amenay isway Elvinmay!".

  • Add an option for the user to enter a filename, and have the contents of the file translated and displayed.

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