Add test for QuicOption.setHandshakeUserAgent

Test: atest CtsNetHttpTestCases
Bug: 251012627
Change-Id: Id9ed74715f946e42727c63e7e0d6788258b4300c
diff --git a/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt b/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt
index 5f1979f..0b02aa7 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt
+++ b/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt
@@ -71,4 +71,14 @@
         assertThat(quicOptions.inMemoryServerConfigsCacheSize)
                 .isEqualTo(42)
     }
+
+    @Test
+    fun testQuicOptions_handshakeUserAgent_returnsSetValue() {
+        val userAgent = "test"
+        val quicOptions = QuicOptions.Builder()
+            .setHandshakeUserAgent(userAgent)
+            .build()
+        assertThat(quicOptions.handshakeUserAgent)
+            .isEqualTo(userAgent)
+    }
 }