BAEL-3855

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Unknown 2020-02-19 23:27:45 +01:00
parent 72ea7a14e6
commit 510c474ef5
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package com.baeldung.algorithms.greedy;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
public class GreedyAlgorithmUnitTest {
private SocialConnector prepareNetwork() {
SocialConnector sc = new SocialConnector();
SocialUser root = new SocialUser("root");
SocialUser child1 = new SocialUser("child1");
SocialUser child2 = new SocialUser("child2");
SocialUser child3 = new SocialUser("child3");
SocialUser child21 = new SocialUser("child21");
SocialUser child211 = new SocialUser("child211");
SocialUser child2111 = new SocialUser("child2111");
SocialUser child31 = new SocialUser("child31");
SocialUser child311 = new SocialUser("child311");
SocialUser child3111 = new SocialUser("child3111");
child211.addFollowers(Arrays.asList(new SocialUser[]{child2111}));
child311.addFollowers(Arrays.asList(new SocialUser[]{child3111}));
child21.addFollowers(Arrays.asList(new SocialUser[]{child211}));
child31.addFollowers(Arrays.asList(new SocialUser[]{child311,
new SocialUser("child312"), new SocialUser("child313"), new SocialUser("child314")}));
child1.addFollowers(Arrays.asList(new SocialUser[]{new SocialUser("child11"), new SocialUser("child12")}));
child2.addFollowers(Arrays.asList(new SocialUser[]{child21, new SocialUser("child22"), new SocialUser("child23")}));
child3.addFollowers(Arrays.asList(new SocialUser[]{child31}));
root.addFollowers(Arrays.asList(new SocialUser[]{child1, child2, child3}));
sc.setUsers(Arrays.asList(new SocialUser[]{root, child1, child2, child3, child21, child31, child311, child211}));
return sc;
}
@Test
public void greedyAlgorithmTest() throws Exception {
GreedyAlgorithm ga = new GreedyAlgorithm(prepareNetwork());
assertEquals(ga.findMostFollowersPath("root"), 5);
}
@Test
public void nongreedyAlgorithmTest() throws Exception {
NonGreedyAlgorithm nga = new NonGreedyAlgorithm(prepareNetwork(), 0);
Assertions.assertThrows(Exception.class, () -> {
nga.findMostFollowersPath("root");
});
}
@Test
public void nongreedyAlgorithmUnboundedTest() throws Exception {
SocialConnector sc = prepareNetwork();
sc.switchCounter();
NonGreedyAlgorithm nga = new NonGreedyAlgorithm(sc, 0);
assertEquals(nga.findMostFollowersPath("root"), 6);
}
}