v0.3.2-pre.003

crates/ksp-store-lib/tests/feature_mismatch.rs

@@ -0,0 +1,46 @@
+// file: crates/ksp-store-lib/tests/feature_mismatch.rs
+// version: 1
+
+#![warn(missing_docs)]
+#![deny(unreachable_pub)]
+#![forbid(unsafe_code)]
+
+//! Feature-selection canaries for known Store backends.
+
+fn poll_ready<T>(future: impl std::future::Future<Output = T>) -> T {
+    let mut future = std::boxed::Box::pin(future);
+    let waker = std::task::Waker::noop();
+    let mut context = std::task::Context::from_waker(waker);
+    return match std::future::Future::poll(future.as_mut(), &mut context) {
+        std::task::Poll::Ready(value) => value,
+        std::task::Poll::Pending => panic!("pre.003 Store feature-dispatch future unexpectedly became pending before any I/O exists"),
+    };
+}
+
+fn settings() -> ksp_store_lib::StoreSettings {
+    let postgres = ksp_store_lib::PostgresStoreSettings::new(
+        "postgresql://operator-supplied-sensitive-value",
+        ksp_store_lib::PostgresPoolSettings::default(),
+        ksp_store_lib::PostgresTlsMode::Disabled,
+        ksp_store_lib::PostgresBootstrapSettings::default(),
+    );
+    return ksp_store_lib::StoreSettings::with_default_shutdown(ksp_store_lib::StoreBackendSettings::Postgres(postgres));
+}
+
+#[cfg(not(feature = "postgres"))]
+#[test]
+fn pre_003_known_postgres_without_feature_returns_stable_error_before_io() {
+    let result = poll_ready(ksp_store_lib::Store::open(settings()));
+    let error = result.err();
+    assert_eq!(error.map(|value| value.code()), std::option::Option::Some(ksp_store_lib::ERROR_CODE_BACKEND_NOT_COMPILED));
+    return;
+}
+
+#[cfg(feature = "postgres")]
+#[test]
+fn pre_003_compiled_postgres_path_refuses_to_fake_readiness_before_pre_005() {
+    let result = poll_ready(ksp_store_lib::Store::open(settings()));
+    let error = result.err();
+    assert_eq!(error.map(|value| value.code()), std::option::Option::Some(ksp_store_lib::ERROR_CODE_BACKEND_OPEN_FAILED));
+    return;
+}