Fix isValid().

This commit is contained in:
Holt59 2018-02-24 21:57:56 +01:00
parent f736bf3005
commit 0236798ef5

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@ -1,40 +1,195 @@
package org.insa.graph; package org.insa.graph;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.io.IOException; import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays; import java.util.Arrays;
import org.insa.graph.RoadInformation.RoadType; import org.insa.graph.RoadInformation.RoadType;
import org.junit.jupiter.api.BeforeAll; import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
public class PathTest { public class PathTest {
// Small graph use for tests // Small graph use for tests
private static Graph graph; private static Graph graph;
// List of arcs in the graph. // List of nodes
private static Arc[] arcs; private static Node[] nodes;
// List of arcs in the graph, a2b is the arc from node A (0) to B (1).
@SuppressWarnings("unused")
private static Arc a2b, a2c, a2e, b2c, c2d_1, c2d_2, c2d_3, c2a, d2a, d2e, e2d;
// Some paths...
private static Path emptyPath, shortPath, longPath, loopPath, longLoopPath, invalidPath;
@BeforeAll @BeforeAll
static void initAll() throws IOException { static void initAll() throws IOException {
RoadInformation speed10 = new RoadInformation(RoadType.ROAD, true, 10, ""), // 10 and 20 meters per seconds
speed20 = new RoadInformation(RoadType.ROAD, true, 20, ""); RoadInformation speed10 = new RoadInformation(RoadType.ROAD, true, 36, ""),
speed20 = new RoadInformation(RoadType.ROAD, true, 72, "");
// Create nodes // Create nodes
Node[] nodes = new Node[5]; nodes = new Node[5];
for (int i = 0; i < nodes.length; ++i) { for (int i = 0; i < nodes.length; ++i) {
nodes[i] = new Node(i, null); nodes[i] = new Node(i, null);
} }
// Add arcs... // Add arcs...
arcs = new Arc[] { new Arc(nodes[0], nodes[1], 10, speed10, null), a2b = new Arc(nodes[0], nodes[1], 10, speed10, null);
new Arc(nodes[0], nodes[3], 15, speed10, null), new Arc(nodes[0], nodes[4], 15, speed20, null), a2c = new Arc(nodes[0], nodes[2], 15, speed10, null);
new Arc(nodes[1], nodes[2], 10, speed10, null), new Arc(nodes[2], nodes[3], 20, speed10, null), a2e = new Arc(nodes[0], nodes[4], 15, speed20, null);
new Arc(nodes[2], nodes[3], 10, speed10, null), new Arc(nodes[2], nodes[3], 15, speed20, null), b2c = new Arc(nodes[1], nodes[2], 10, speed10, null);
new Arc(nodes[3], nodes[0], 15, speed10, null), new Arc(nodes[3], nodes[4], 20, speed20, null), c2d_1 = new Arc(nodes[2], nodes[3], 20, speed10, null);
new Arc(nodes[0], nodes[1], 10, speed10, null) }; c2d_2 = new Arc(nodes[2], nodes[3], 10, speed10, null);
c2d_3 = new Arc(nodes[2], nodes[3], 15, speed20, null);
d2a = new Arc(nodes[3], nodes[0], 15, speed10, null);
d2e = new Arc(nodes[3], nodes[4], 20, speed20, null);
e2d = new Arc(nodes[4], nodes[0], 10, speed10, null);
graph = new Graph(0, Arrays.asList(nodes)); graph = new Graph(0, Arrays.asList(nodes));
emptyPath = new Path(graph, new ArrayList<Arc>());
shortPath = new Path(graph, Arrays.asList(new Arc[] { a2b, b2c, c2d_1 }));
longPath = new Path(graph, Arrays.asList(new Arc[] { a2b, b2c, c2d_1, d2e }));
loopPath = new Path(graph, Arrays.asList(new Arc[] { a2b, b2c, c2d_1, d2a }));
longLoopPath = new Path(graph, Arrays.asList(new Arc[] { a2b, b2c, c2d_1, d2a, a2c, c2d_3, d2a, a2b, b2c }));
invalidPath = new Path(graph, Arrays.asList(new Arc[] { a2b, c2d_1, d2e }));
} }
@Test
void testConstructor() {
assertEquals(graph, emptyPath.getGraph());
assertEquals(graph, shortPath.getGraph());
assertEquals(graph, longPath.getGraph());
assertEquals(graph, loopPath.getGraph());
assertEquals(graph, longLoopPath.getGraph());
assertEquals(graph, invalidPath.getGraph());
}
@Test
void testImmutability() {
assertThrows(UnsupportedOperationException.class, new Executable() {
@Override
public void execute() throws Throwable {
emptyPath.getArcs().add(a2b);
}
});
assertThrows(UnsupportedOperationException.class, new Executable() {
@Override
public void execute() throws Throwable {
shortPath.getArcs().add(d2e);
}
});
}
@Test
void testIsEmpty() {
assertTrue(emptyPath.isEmpty());
assertFalse(shortPath.isEmpty());
assertFalse(longPath.isEmpty());
assertFalse(loopPath.isEmpty());
assertFalse(longLoopPath.isEmpty());
assertFalse(invalidPath.isEmpty());
}
@Test
void testIsValid() {
assertTrue(emptyPath.isValid());
assertTrue(shortPath.isValid());
assertTrue(longPath.isValid());
assertTrue(loopPath.isValid());
assertTrue(longLoopPath.isValid());
assertFalse(invalidPath.isValid());
}
@Test
void testGetLength() {
assertEquals(emptyPath.getLength(), 0);
assertEquals(shortPath.getLength(), 40);
assertEquals(longPath.getLength(), 60);
assertEquals(loopPath.getLength(), 55);
assertEquals(longLoopPath.getLength(), 120);
}
@Test
void testGetMinimumTravelTime() {
assertEquals(emptyPath.getMinimumTravelTime(), 0, 1e-4);
assertEquals(shortPath.getMinimumTravelTime(), 4, 1e-4);
assertEquals(longPath.getMinimumTravelTime(), 5, 1e-4);
assertEquals(loopPath.getMinimumTravelTime(), 5.5, 1e-4);
assertEquals(longLoopPath.getMinimumTravelTime(), 11.25, 1e-4);
}
@Test
void testCreateFastestPathFromNodes() {
Path path;
Arc[] expected;
// Simple construction
path = Path.createFastestPathFromNodes(graph, Arrays.asList(new Node[] { nodes[0], nodes[1], nodes[2] }));
expected = new Arc[] { a2b, b2c };
assertEquals(expected.length, path.getArcs().size());
for (int i = 0; i < expected.length; ++i) {
assertEquals(expected[i], path.getArcs().get(i));
}
// Not so simple construction
path = Path.createFastestPathFromNodes(graph,
Arrays.asList(new Node[] { nodes[0], nodes[1], nodes[2], nodes[3] }));
expected = new Arc[] { a2b, b2c, c2d_3 };
assertEquals(expected.length, path.getArcs().size());
for (int i = 0; i < expected.length; ++i) {
assertEquals(expected[i], path.getArcs().get(i));
}
// Wrong construction
assertThrows(IllegalArgumentException.class, new Executable() {
@Override
public void execute() throws Throwable {
Path.createFastestPathFromNodes(graph, Arrays.asList(new Node[] { nodes[1], nodes[0] }));
}
});
}
@Test
void testCreateShortestPathFromNodes() {
Path path;
Arc[] expected;
// Simple construction
path = Path.createShortestPathFromNodes(graph, Arrays.asList(new Node[] { nodes[0], nodes[1], nodes[2] }));
expected = new Arc[] { a2b, b2c };
assertEquals(expected.length, path.getArcs().size());
for (int i = 0; i < expected.length; ++i) {
assertEquals(expected[i], path.getArcs().get(i));
}
// Not so simple construction
path = Path.createShortestPathFromNodes(graph,
Arrays.asList(new Node[] { nodes[0], nodes[1], nodes[2], nodes[3] }));
expected = new Arc[] { a2b, b2c, c2d_2 };
assertEquals(expected.length, path.getArcs().size());
for (int i = 0; i < expected.length; ++i) {
assertEquals(expected[i], path.getArcs().get(i));
}
// Wrong construction
assertThrows(IllegalArgumentException.class, new Executable() {
@Override
public void execute() throws Throwable {
Path.createShortestPathFromNodes(graph, Arrays.asList(new Node[] { nodes[1], nodes[0] }));
}
});
}
} }