Merge pull request #705 from google/627

Implemented equals and hashcode for LazilyParsedNumber to fix

gson/src/main/java/com/google/gson/internal/LazilyParsedNumber.java

@@ -26,6 +26,7 @@ import java.math.BigDecimal;
 public final class LazilyParsedNumber extends Number {
   private final String value;
 
+  /** @param value must not be null */
   public LazilyParsedNumber(String value) {
     this.value = value;
   }
@@ -75,4 +76,21 @@ public final class LazilyParsedNumber extends Number {
   private Object writeReplace() throws ObjectStreamException {
     return new BigDecimal(value);
   }
-}
+
+  @Override
+  public int hashCode() {
+    return value.hashCode();
+  }
+
+  @Override
+  public boolean equals(Object obj) {
+    if (this == obj) {
+      return true;
+    }
+    if (obj instanceof LazilyParsedNumber) {
+      LazilyParsedNumber other = (LazilyParsedNumber) obj;
+      return value == other.value || value.equals(other.value);
+    }
+    return false;
+  }
+}

gson/src/test/java/com/google/gson/internal/LazilyParsedNumberTest.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2015 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.gson.internal;
+
+import junit.framework.TestCase;
+
+public class LazilyParsedNumberTest extends TestCase {
+  public void testHashCode() {
+    LazilyParsedNumber n1 = new LazilyParsedNumber("1");
+    LazilyParsedNumber n1Another = new LazilyParsedNumber("1");
+    assertEquals(n1.hashCode(), n1Another.hashCode());
+  }
+
+  public void testEquals() {
+    LazilyParsedNumber n1 = new LazilyParsedNumber("1");
+    LazilyParsedNumber n1Another = new LazilyParsedNumber("1");
+    assertTrue(n1.equals(n1Another));
+  }
+}