Added abstract class and made more tests

src/main/data/Nyse.java

@@ -1,28 +1,11 @@
 package data;
 
 import java.util.*;
+import data.StockType;
 
-public class Nyse implements StockType {
+public class Nyse extends StockType {
-    private static final String NAME = "NYSE";
-    private HashSet sources;
-
     public Nyse() {
-        sources = new HashSet();
+        super();
-    }
+        name = "NYSE";
-
-    @Override
-    public float[] update(String idstring) {
-        Iterator iterator = sources.iterator();
-        float[] result = new float[2];
-        while (iterator.hasNext()) {
-            //XXX
-            //DataSource source = (DataSource)iterator.next();
-        }
-        return result;
-    }
-
-    @Override
-    public String getName() {
-        return this.NAME;
     }
 }

src/main/data/StockType.java

@@ -2,13 +2,31 @@ package data;
 
 import java.util.*;
 
-public interface StockType {
+public abstract class StockType {
+    protected static String name;
+    protected HashSet sources;
+
+    // Sources is empty
+    public StockType() {
+        sources = new HashSet();
+    }
+
     //Effects: return current price[0] and %change[1] 
     //				(2 element array)
     //Require: working sources
-    public float[] update(String idstring);
+    public float[] update(String idstring) {
+        Iterator iterator = sources.iterator();
+        float[] result = new float[2];
+        while (iterator.hasNext()) {
+            //XXX
+            //DataSource source = (DataSource)iterator.next();
+        }
+        return result;
+    }
 
     //Effects: return name of type
     //Require: working sources
-    public String getName();
+    public String getName() {
+        return this.name;
+    }
 }

src/test/StockEntryTest.java

@@ -0,0 +1,30 @@
+import data.StockEntry;
+import data.StypeMap;
+import data.StockType;
+import data.Nyse;
+import ui.Main;
+import java.io.*;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class StockEntryTest {
+    private StockEntry entry;
+    private StypeMap smap;
+    private StockType nyyyse;
+
+    @BeforeEach
+    public void runBefore() {
+        smap = new StypeMap();
+        nyyyse = smap.getStype("Nyse");
+    }
+
+    @Test
+    public void testTypeAndName() {
+        entry = new StockEntry(nyyyse, "test");
+        assertTrue(entry.getTypeName().equals("NYSE"));
+        assertTrue(entry.getID().equals("test"));
+    }
+}