Add unit tests for HumanName has(String) methods

Prefixes, given names, and suffixes can all have multiple entries, and
so are kept in a list. The `hasPrefix(String)` and its sibling methods
are conveniences for checking that these lists contain the given
element. Add tests around those three methods to ensure that the list
checking code is correct.

Issue #865 HumanName#hasGiven(String) can never return true

hapi-fhir-structures-dstu3/src/test/java/org/hl7/fhir/dstu3/model/HumanNameDstu3Test.java

@@ -0,0 +1,29 @@
+package org.hl7.fhir.dstu3.model;
+
+import org.junit.Ignore;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class HumanNameDstu3Test {
+	@Ignore("Issue #865")
+	@Test
+	public void hasGivenFindsParameter() {
+		HumanName humanName = new HumanName().addGiven("test");
+		assertTrue(humanName.hasGiven("test"));
+	}
+
+	@Ignore("Issue #865")
+	@Test
+	public void hasPrefixFindsParameter() {
+		HumanName humanName = new HumanName().addPrefix("test");
+		assertTrue(humanName.hasPrefix("test"));
+	}
+
+	@Ignore("Issue #865")
+	@Test
+	public void hasSuffixFindsParameter() {
+		HumanName humanName = new HumanName().addSuffix("test");
+		assertTrue(humanName.hasSuffix("test"));
+	}
+}