some changes

src/test/java/org/solovyev/common/math/DiscreteNormalizerTest.java

@@ -0,0 +1,35 @@
+package org.solovyev.common.math;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.solovyev.common.utils.MathUtils;
+
+/**
+ * User: serso
+ * Date: 9/20/11
+ * Time: 5:51 PM
+ */
+public class DiscreteNormalizerTest {
+
+	@Test
+	public void testNormalize() throws Exception {
+	 	DiscreteNormalizer dn = new DiscreteNormalizer(0, 10, 1);
+
+		Assert.assertTrue(MathUtils.equals(0, dn.normalize(0.5), 2));
+		Assert.assertTrue(MathUtils.equals(0, dn.normalize(0.99), 2));
+		Assert.assertTrue(MathUtils.equals(0.1, dn.normalize(1), 2));
+		Assert.assertTrue(MathUtils.equals(0.1, dn.normalize(1.01), 2));
+		Assert.assertTrue(MathUtils.equals(1, dn.normalize(10), 2));
+		Assert.assertTrue(MathUtils.equals(0.9, dn.normalize(9.99), 2));
+	}
+
+	@Test
+	public void testDenormalize() throws Exception {
+		DiscreteNormalizer dn = new DiscreteNormalizer(0, 10, 1);
+
+		Assert.assertTrue(MathUtils.equals(0, dn.normalize(dn.denormalize(0)), 2));
+		Assert.assertTrue(MathUtils.equals(0.1, dn.normalize(dn.denormalize(0.1)), 2));
+		Assert.assertTrue(MathUtils.equals(1, dn.normalize(dn.denormalize(1)), 2));
+		Assert.assertTrue(MathUtils.equals(0.9, dn.normalize(dn.denormalize(0.9)), 2));
+	}
+}