1 files changed, 86 insertions, 0 deletions
diff --git a/src/jcgp/backend/tests/PopulationTests.java b/src/jcgp/backend/tests/PopulationTests.java
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+++ b/src/jcgp/backend/tests/PopulationTests.java
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+package jcgp.backend.tests;
+
+import static org.junit.Assert.assertTrue;
+import jcgp.JCGP.Resources;
+import jcgp.backend.population.Chromosome;
+import jcgp.backend.population.Population;
+
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * 
+ * Tests which cover the behaviour specified for a population.
+ * 
+ *  - It should be possible to iterate through all the chromosomes in a population.
+ *  - When constructed with no arguments, it should generate populationSize
+ *    random chromosomes, distributed according to the EA parameters.
+ *  - If one or more chromosomes are passed into the constructor, it should use them
+ *    as parents to create the rest of the population.
+ *  
+ * 
+ * @author Eduardo Pedroni
+ *
+ */
+public class PopulationTests {
+
+	private Population population;
+	private static Resources resources;
+
+	@BeforeClass
+	public static void setUpBeforeClass() throws Exception {
+		resources = new Resources();
+		
+		
+//		// initialise function set
+//		FunctionSet functionSet = new FunctionSet(new Arithmetic.Addition(), new Arithmetic.Subtraction());
+//
+//		// initialise utilities
+//		Utilities.setResources(new Random(1234), functionSet);
+//
+//		// initialise parameters
+//		Resources.setColumns(20);
+//		Resources.setRows(20);
+//		Resources.setInputs(2);
+//		Resources.setOutputs(4);
+//		Resources.setLevelsBack(1);
+//		Resources.setMutationRate(10);
+//		Resources.setTotalGenerations(100);
+//		Resources.setTotalRuns(5);
+//		Resources.setPopulationSize(1, 4);
+//		Resources.setMaxArity(functionSet.getMaxArity());
+	}
+
+	@Before
+	public void setUp() throws Exception {
+		population = new Population(resources);
+	}
+
+	@Test
+	public void defaultPopulationTest() {
+		// check that the constructor really generates populationSize chromosomes when none is given
+		int chromosomes = 0;
+		while (true) {
+			try {
+				population.getChromosome(chromosomes);
+			} catch (IndexOutOfBoundsException e) {
+				break;
+			}
+			chromosomes++;
+		}
+
+		assertTrue("Incorrect number of chromosomes generated.", chromosomes == resources.getInt("popSize"));
+	}
+	
+	@Test
+	public void preinitialisedChromosomeTest() {
+		// the original chromosome that will be cloned
+		Chromosome oc = new Chromosome(resources);
+
+		// initialise a population with a copy of it
+		population = new Population(oc, resources);
+		// check that the first parent chromosome is identical to, but not the same instance as, the one given
+		assertTrue("Incorrect chromosome in population.", population.getChromosome(0).compareTo(oc) && population.getChromosome(0) != oc);
+	}
+}