testcase1.dat

0 1
0 2
1 0
1 2
1 5
1 10
2 1
2 4
2 5
2 10
2 13
3 12
3 1
3 0
3 10
4 3
4 6
4 9
5 1
5 10
5 12
5 11
5 13
6 1
6 12
6 13
7 10
7 1
7 3
7 4
7 6
8 2
8 1

testcase1_id.dat

Sherlock Holmes 0
John Smith 1
Andrew Ng 2
Clark Kent 3
Bruce Wayne 4
Arnold Schwarzenegger 5
David Copperfield 6
Roger Federer 7
Socrates 8
Paul McCartney 9
Confucius 10
Steven Spielberg 11
Nikola Tesla 12
George Lucas 13

UndirectedGraphReadTest.java

package graph;

import org.junit.Before;
import org.junit.Test;

import java.io.File;
import java.io.IOException;
import java.util.List;

import static org.junit.Assert.*;

/**
 * Created by Сергій Шнуренко on 22.07.2016.
 */
public class UndirectedGraphReadTest {
    //region Private fields
    private static String testcase1 = new File("").getAbsolutePath()+"\\src\\test\\resources\\testcase1";
    UndirectedGraph<String> g1;
    String[] shouldContainArray = {"Sherlock Holmes", "John Smith", "Andrew Ng", "Clark Kent", "Bruce Wayne",
            "Arnold Schwarzenegger", "David Copperfield", "Roger Federer", "Socrates", "Paul McCartney",
            "Confucius", "Steven Spielberg", "Nikola Tesla", "George Lucas"};
    //endregion

    @Before
    public void setUp() throws IOException{
        g1 = new UndirectedGraph<String>();
        g1.readFromFile(testcase1);
    }

    @Test
    public void containsAllNodesTest(){
        List<String> vertices = g1.getAllVertices();

        if(vertices.size()!=14)
            fail("Testcase#1 number of vertices should be equal 14");

        for(String shouldContain:shouldContainArray){
            assertTrue("There must be "+shouldContain+" node in graph.",vertices.contains(shouldContain));
        }
    }

    @Test
    public void containsConnectionsTest(){
        assertTrue("Sherlock Holmes must know John Smith",g1.getAdjacent("Sherlock Holmes").contains("John Smith"));
        assertTrue("Sherlock Holmes must know John Smith",g1.getAdjacent("Sherlock Holmes").contains("Andrew Ng"));
        assertTrue("Sherlock Holmes must know John Smith",g1.getAdjacent("Sherlock Holmes").contains("Clark Kent"));
        assertEquals("Sherlock Holmes should know only 3 persons",3,g1.getAdjacent("Sherlock Holmes").size());
        assertEquals("Arnold Schwarzenegger should know only 6 persons",6,g1.getAdjacent("Arnold Schwarzenegger").size());
    }
}