Initial checkin

src/test/java/com/softwarecraftsmen/dns/labels/ServiceProtocolLabelTest.java

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+/**
+ * This file is Copyright © 2008 Software Craftsmen Limited. All Rights Reserved.
+ */
+package com.softwarecraftsmen.dns.labels;
+
+import static com.softwarecraftsmen.dns.labels.ServiceProtocolLabel.TCP;
+import static com.softwarecraftsmen.dns.labels.ServiceProtocolLabel.toServiceProtocolLabel;
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class ServiceProtocolLabelTest
+{
+	@Test
+	public void isEmptyIsAlwaysFalse()
+	{
+		assertTrue(TCP.isEmpty());
+	}
+
+	@Test
+	public void toStringRepresentationHasAnUnderscore()
+	{
+		assertThat(TCP.toStringRepresentation(), is("_tcp"));
+	}
+
+	@Test
+	public void length()
+	{
+		assertThat(TCP.length(), is(4));
+	}
+
+	@Test
+	public void toServiceProtocolLabelPresent()
+	{
+		assertThat(toServiceProtocolLabel("tcp"), is(TCP));
+		assertThat(toServiceProtocolLabel("_tcp"), is(TCP));
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void toServiceProtocolLabelUnrecognised()
+	{
+		toServiceProtocolLabel("notrecognised");
+	}
+}