From 36cacf31b7ee0cc3ccaa68c1560d3dec0e15ced2 Mon Sep 17 00:00:00 2001
From: lmj798 <2757400745@qq.com>
Date: Mon, 9 Mar 2026 22:05:54 +0800
Subject: [PATCH] Add boundary tests for JsonTreeWriter.endArray() error
 handling (#2988)

* Add boundary tests for JsonTreeWriter.endArray() error handling

* Update JsonTreeWriterTest.java
---
 .../internal/bind/JsonTreeWriterTest.java     | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/gson/src/test/java/com/google/gson/internal/bind/JsonTreeWriterTest.java b/gson/src/test/java/com/google/gson/internal/bind/JsonTreeWriterTest.java
index 97dc2e56c..0600a7ef0 100644
--- a/gson/src/test/java/com/google/gson/internal/bind/JsonTreeWriterTest.java
+++ b/gson/src/test/java/com/google/gson/internal/bind/JsonTreeWriterTest.java
@@ -281,4 +281,25 @@ public final class JsonTreeWriterTest {
             "getSerializeNulls()");
     MoreAsserts.assertOverridesMethods(JsonWriter.class, JsonTreeWriter.class, ignoredMethods);
   }
+
+  @Test
+  public void testEndArrayOnEmptyStackThrows() {
+    JsonTreeWriter writer = new JsonTreeWriter();
+    assertThrows(IllegalStateException.class, () -> writer.endArray());
+  }
+
+  @Test
+  public void testEndArrayWithPendingNameThrows() throws IOException {
+    JsonTreeWriter writer = new JsonTreeWriter();
+    writer.beginObject();
+    writer.name("test");
+    assertThrows(IllegalStateException.class, () -> writer.endArray());
+  }
+
+  @Test
+  public void testEndArrayWhenStackTopIsNotArrayThrows() throws IOException {
+    JsonTreeWriter writer = new JsonTreeWriter();
+    writer.beginObject();
+    assertThrows(IllegalStateException.class, () -> writer.endArray());
+  }
 }