Add CTS test

Taken from intel#17709

Co-authored-by:  Mikołaj Komar <[email protected]>

Author: EwanC

unified-runtime/test/conformance/exp_command_buffer/fill.cpp

@@ -122,6 +122,30 @@ TEST_P(urCommandBufferFillCommandsTest, Buffer) {
   verifyData(output, size);
 }
 
+TEST_P(urCommandBufferFillCommandsTest, ExecuteTwice) {
+  // Fail on Level-Zero due to blocking wait code in graph_impl.cpp specific
+  // to the level-zero backend that needs moved into the Level-Zero v1 adapter.
+  UUR_KNOWN_FAILURE_ON(uur::LevelZero{});
+  ASSERT_SUCCESS(urCommandBufferAppendMemBufferFillExp(
+      cmd_buf_handle, buffer, pattern.data(), pattern_size, 0, size, 0, nullptr,
+      0, nullptr, &sync_point, nullptr, nullptr));
+
+  std::vector<uint8_t> output(size, 1);
+  ASSERT_SUCCESS(urCommandBufferAppendMemBufferReadExp(
+      cmd_buf_handle, buffer, 0, size, output.data(), 1, &sync_point, 0,
+      nullptr, nullptr, nullptr, nullptr));
+
+  ASSERT_SUCCESS(urCommandBufferFinalizeExp(cmd_buf_handle));
+
+  ASSERT_SUCCESS(
+      urEnqueueCommandBufferExp(queue, cmd_buf_handle, 0, nullptr, nullptr));
+  ASSERT_SUCCESS(
+      urEnqueueCommandBufferExp(queue, cmd_buf_handle, 0, nullptr, nullptr));
+  ASSERT_SUCCESS(urQueueFinish(queue));
+
+  verifyData(output, size);
+}
+
 TEST_P(urCommandBufferFillCommandsTest, USM) {
   ASSERT_SUCCESS(urCommandBufferAppendUSMFillExp(
       cmd_buf_handle, device_ptr, pattern.data(), pattern_size, size, 0,