Added update stub and test

src/main/data/StockEntry.java

@@ -3,8 +3,8 @@ package data;
 public class StockEntry {
     private String identifier;
     private StockType stype;
-    private float price;
+    private double price;
-    private float change;
+    private double change;
 
     public StockEntry(StockType stype, String idstring) {
         identifier = idstring;
@@ -12,7 +12,7 @@ public class StockEntry {
     }
 
     public void update() {
-        float[] result = this.stype.update(this.identifier);
+        double[] result = this.stype.update(this.identifier);
         this.price = result[0];
         this.change = result[1];
     }

src/main/data/StockType.java

@@ -14,9 +14,9 @@ public abstract class StockType {
     //Effects: return current price[0] and %change[1] 
     //				(2 element array)
     //Require: working sources
-    public float[] update(String idstring) {
+    public double[] update(String idstring) {
         Iterator iterator = sources.iterator();
-        float[] result = new float[2];
+        double[] result = {0.0, 0.0};
         while (iterator.hasNext()) {
             //XXX
             //DataSource source = (DataSource)iterator.next();

src/test/NasdaqTest.java

@@ -21,4 +21,11 @@ public class NasdaqTest {
     public void testName() {
         assertTrue(naasdaq.getName().equals("NASDAQ"));
     }
+
+    @Test
+    public void testUpdate() {
+        double[] farray = naasdaq.update("1");
+        assertEquals(farray[0],0.0);
+        assertEquals(farray[1],0.0);
+    }
 }

src/test/NyseTest.java

@@ -21,4 +21,11 @@ public class NyseTest {
     public void testName() {
         assertTrue(nyyyse.getName().equals("NYSE"));
     }
+
+    @Test
+    public void testUpdate() {
+        double[] farray = nyyyse.update("1");
+        assertEquals(farray[0],0.0);
+        assertEquals(farray[1],0.0);
+    }
 }