From ef9fefcedd1f7f19dcb37e150c1c088885093bbf Mon Sep 17 00:00:00 2001
From: ziga-lunarg <ziga@lunarg.com>
Date: Thu, 24 Aug 2023 17:25:48 +0200
Subject: [PATCH] tests: Test sync2 extension is found once

---
 tests/synchronization2_tests.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tests/synchronization2_tests.cpp b/tests/synchronization2_tests.cpp
index 48cf16fa..fafc5a56 100644
--- a/tests/synchronization2_tests.cpp
+++ b/tests/synchronization2_tests.cpp
@@ -1435,3 +1435,24 @@ TEST_F(Sync2Test, SwapchainImage) {
     vk::DestroyImageView(m_device->device(), view, NULL);
     DestroySwapchain();
 }
+
+TEST_F(Sync2Test, EnumerateDeviceExtensionProperties) {
+    TEST_DESCRIPTION("Verify the extension is found only once");
+    if (!CheckSynchronization2SupportAndInitState()) {
+        GTEST_SKIP() << kSkipPrefix << " synchronization2 not supported, skipping test";
+    }
+
+    uint32_t propertyCount;
+    vk::EnumerateDeviceExtensionProperties(m_device->phy().handle(), nullptr, &propertyCount, nullptr);
+    std::vector<VkExtensionProperties> props(propertyCount);
+    vk::EnumerateDeviceExtensionProperties(m_device->phy().handle(), nullptr, &propertyCount, props.data());
+
+    uint32_t count = 0;
+    for (const auto &p : props) {
+        if (strcmp(p.extensionName, "VK_KHR_synchronization2") == 0) {
+            ++count;
+        }
+    }
+
+    ASSERT_EQ(count, 1);
+}