From ceb3b8747ece88cc9f8422420fefccb95b83860f Mon Sep 17 00:00:00 2001
From: Doug Hoard <dhoard@users.noreply.github.com>
Date: Sun, 13 Nov 2022 15:58:30 -0500
Subject: [PATCH] Added JsonObject method isEmpty() (#2233)

* Added isEmpty()

* Fixed Javadoc typo

* Changed test to use assertTrue() and assertFalse()
---
 gson/src/main/java/com/google/gson/JsonObject.java   | 10 ++++++++++
 .../test/java/com/google/gson/JsonObjectTest.java    | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/gson/src/main/java/com/google/gson/JsonObject.java b/gson/src/main/java/com/google/gson/JsonObject.java
index 60dac41c4a..fdf240d235 100644
--- a/gson/src/main/java/com/google/gson/JsonObject.java
+++ b/gson/src/main/java/com/google/gson/JsonObject.java
@@ -155,6 +155,16 @@ public int size() {
     return members.size();
   }
 
+  /**
+   * Returns true if the number of key/value pairs in the object is zero.
+   *
+   * @return true if the number of key/value pairs in the object is zero.
+   * @since $next-version$
+   */
+  public boolean isEmpty() {
+    return members.size() == 0;
+  }
+
   /**
    * Convenience method to check if a member with the specified name is present in this object.
    *
diff --git a/gson/src/test/java/com/google/gson/JsonObjectTest.java b/gson/src/test/java/com/google/gson/JsonObjectTest.java
index a0109ba863..6e1339c7c4 100644
--- a/gson/src/test/java/com/google/gson/JsonObjectTest.java
+++ b/gson/src/test/java/com/google/gson/JsonObjectTest.java
@@ -222,6 +222,18 @@ public void testSize() {
     assertEquals(1, o.size());
   }
 
+  @Test
+  public void testIsEmpty() {
+    JsonObject o = new JsonObject();
+    assertTrue(o.isEmpty());
+
+    o.add("Hello", new JsonPrimitive(1));
+    assertFalse(o.isEmpty());
+
+    o.remove("Hello");
+    assertTrue(o.isEmpty());
+  }
+
   @Test
   public void testDeepCopy() {
     JsonObject original = new JsonObject();