feat(native): plan SQL tests natively behind the preview engine

crates/sqlbuild-analysis/src/compiler/_helpers/sql_tests/glue.rs

@@ -0,0 +1,31 @@
+//! Projections of planned SQL tests into the facts the compiler reports.
+
+use std::collections::HashSet;
+
+use crate::compiler::models::SqlTestPlan;
+
+const ERROR_SEVERITY: &str = "error";
+const DEFAULT_WORKERS: usize = 4;
+
+/// Each distinct error-severity warning message of one planned test, in warning order.
+pub(crate) fn error_messages(plan: &SqlTestPlan) -> Vec<String> {
+    let mut seen: HashSet<&str> = HashSet::new();
+    plan.warnings
+        .iter()
+        .filter(|warning| warning.severity == ERROR_SEVERITY)
+        .filter(|warning| seen.insert(warning.message.as_str()))
+        .map(|warning| warning.message.clone())
+        .collect()
+}
+
+pub(crate) fn default_workers() -> usize {
+    DEFAULT_WORKERS
+}
+
+pub(crate) fn default_true() -> bool {
+    true
+}
+
+pub(crate) fn default_set_difference() -> String {
+    "EXCEPT".to_string()
+}

crates/sqlbuild-analysis/src/compiler/_helpers/sql_tests/mod.rs

@@ -4,6 +4,7 @@ pub mod cte_slices;
 pub mod cte_sql;
 pub mod expected_columns;
 pub mod extraction;
+pub mod glue;
 pub mod helper_names;
 pub mod helper_scope;
 pub mod markers;