import org.junit.Test;

import static org.fest.assertions.api.Assertions.assertThat;

public class WordFrequencyTest {

@Test

public void should_handle_blank_text() {

// given

String text = "";

// when

String result = WordFrequency.handle(text);

// then

assertThat(result).isEqualTo("");

}

@Test

public void should_handle_one_word_text() {

// given

String text = "one";

// when

String result = WordFrequency.handle(text);

// then

assertThat(result).isEqualTo("one 1");

}

@Test

public void should_handle_two_different_words_text() {

// given

String text = "one two";

// when

String result = WordFrequency.handle(text);

// then

assertThat(result).isEqualTo("one 1\r\ntwo 1");

}

@Test

public void should_handle_duplicated_words_text() {

// given

String text = "one two one";

// when

String result = WordFrequency.handle(text);

// then

assertThat(result).isEqualTo("one 2\r\ntwo 1");

}

@Test

public void should_handle_the_order() {

// given

String text = "one two two";

// when

String result = WordFrequency.handle(text);

// then

assertThat(result).isEqualTo("two 2\r\none 1");

}

}