From c884b2e60e6e4a98144fc8154851e9a35082a1bc Mon Sep 17 00:00:00 2001
From: Marco Paniconi <marpan@google.com>
Date: Tue, 5 Dec 2023 11:59:15 -0800
Subject: [PATCH] Add unittest for issue b/314857577

Bug: b/314857577

Change-Id: I591036c1ad3362023686d395adb4783c51baa62d
(cherry picked from commit 12e928cb342d1d4cc8ac3c71b26da45e4488cb88)
---
 test/encode_api_test.cc | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/test/encode_api_test.cc b/test/encode_api_test.cc
index dcbd15c..e228f63 100644
--- a/test/encode_api_test.cc
+++ b/test/encode_api_test.cc
@@ -801,6 +801,55 @@ TEST(EncodeAPI, Buganizer311394513) {
   encoder.Encode(true);
 }
 
+// This is a test case from clusterfuzz: based on b/314857577.
+// Encode a few frames with multiple change config calls
+// with different frame sizes.
+TEST(EncodeAPI, Buganizer314857577) {
+  VP9Encoder encoder(4);
+
+  // Set initial config.
+  encoder.Configure(12, 1060, 437, VPX_VBR, VPX_DL_REALTIME);
+
+  // Encode first frame.
+  encoder.Encode(false);
+
+  // Change config.
+  encoder.Configure(16, 1060, 1, VPX_CBR, VPX_DL_REALTIME);
+
+  // Encode 2nd frame with new config.
+  encoder.Encode(false);
+
+  // Encode 3rd frame with new config.
+  encoder.Encode(true);
+
+  // Change config.
+  encoder.Configure(15, 33, 437, VPX_VBR, VPX_DL_GOOD_QUALITY);
+
+  // Encode 4th frame with new config.
+  encoder.Encode(true);
+
+  // Encode 5th frame with new config.
+  encoder.Encode(false);
+
+  // Change config.
+  encoder.Configure(5, 327, 269, VPX_VBR, VPX_DL_REALTIME);
+
+  // Change config.
+  encoder.Configure(15, 1060, 437, VPX_CBR, VPX_DL_REALTIME);
+
+  // Encode 6th frame with new config.
+  encoder.Encode(false);
+
+  // Encode 7th frame with new config.
+  encoder.Encode(false);
+
+  // Change config.
+  encoder.Configure(4, 1060, 437, VPX_VBR, VPX_DL_REALTIME);
+
+  // Encode 8th frame with new config.
+  encoder.Encode(false);
+}
+
 class EncodeApiGetTplStatsTest
     : public ::libvpx_test::EncoderTest,
       public ::testing::TestWithParam<const libvpx_test::CodecFactory *> {
-- 
2.7.4