94 lines
2.7 KiB
Java
94 lines
2.7 KiB
Java
package oving4.twitter;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.DisplayName;
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import org.junit.jupiter.api.Test;
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public class TweetTest {
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private Tweet retweet1;
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private Tweet tweet;
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private TwitterAccount kari;
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private TwitterAccount nils;
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private TwitterAccount ole;
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@BeforeEach
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public void setUp() {
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nils = new TwitterAccount("Nils");
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ole = new TwitterAccount("Ole");
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kari = new TwitterAccount("Kari");
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tweet = new Tweet(nils, "Kvitre!");
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retweet1 = null;
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}
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@Test
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@DisplayName("Check that the constructor initializes correctly")
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public void testNullInConstructors() {
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assertEquals("Kvitre!", tweet.getText());
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assertEquals(nils, tweet.getOwner());
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assertThrows(IllegalArgumentException.class, () -> {
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new Tweet(null, "Kvitre!");
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}, "The tweet must have an owner");
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assertThrows(IllegalArgumentException.class, () -> {
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new Tweet(nils, (String) null);
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}, "The tweet must have text");
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assertThrows(IllegalArgumentException.class, () -> {
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new Tweet(null, tweet);
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}, "The tweet must have an owner");
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assertThrows(IllegalArgumentException.class, () -> {
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new Tweet(nils, (Tweet) null);
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}, "The tweet must have an original tweet");
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}
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@Test
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public void constructorNewTweet() {
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assertEquals("Kvitre!", tweet.getText(),
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"The constructor initialized the tweet with incorrect text");
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assertEquals(nils, tweet.getOwner(),
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"The constructor initialized the tweet with the wrong owner");
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}
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@Test
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@DisplayName("Check that retweet has the same text but a different owner")
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public void constructorRetweet() {
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retweet1 = new Tweet(ole, tweet);
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assertEquals("Kvitre!", retweet1.getText());
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assertEquals(ole, retweet1.getOwner());
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assertThrows(RuntimeException.class, () -> {
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new Tweet(nils, tweet);
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}, "A person should not be able to retweet themselves");
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}
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@Test
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@DisplayName("Check that the original tweet is always correct")
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public void getOriginalTweet() {
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assertNull(tweet.getOriginalTweet());
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retweet1 = new Tweet(ole, tweet);
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assertEquals(tweet, retweet1.getOriginalTweet());
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assertEquals(retweet1.getOriginalTweet().getText(), retweet1.getText());
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assertEquals(tweet, retweet1.getOriginalTweet());
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assertEquals(retweet1.getOriginalTweet().getText(), retweet1.getText());
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}
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@Test
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@DisplayName("Check that retweet count increases when a tweet is retweeted")
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public void getRetweetCount() {
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assertEquals(0, tweet.getRetweetCount());
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new Tweet(ole, tweet);
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assertEquals(1, tweet.getRetweetCount());
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new Tweet(kari, tweet);
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assertEquals(2, tweet.getRetweetCount());
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}
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}
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