story-kit: merge 260_refactor_upgrade_libsqlite3_sys

vendor/rusqlite/tests/deny_single_threaded_sqlite_config.rs

@@ -0,0 +1,23 @@
+//! Ensure we reject connections when SQLite is in single-threaded mode, as it
+//! would violate safety if multiple Rust threads tried to use connections.
+
+#[cfg(all(target_family = "wasm", target_os = "unknown"))]
+use wasm_bindgen_test::wasm_bindgen_test as test;
+
+#[cfg(not(feature = "loadable_extension"))]
+#[test]
+fn test_error_when_singlethread_mode() {
+    use rusqlite::ffi;
+    use rusqlite::Connection;
+    // put SQLite into single-threaded mode
+    unsafe {
+        // Note: macOS system SQLite seems to return an error if you attempt to
+        // reconfigure to single-threaded mode.
+        if ffi::sqlite3_config(ffi::SQLITE_CONFIG_SINGLETHREAD) != ffi::SQLITE_OK {
+            return;
+        }
+        assert_eq!(ffi::sqlite3_initialize(), ffi::SQLITE_OK);
+    }
+    let res = Connection::open_in_memory();
+    res.unwrap_err();
+}