Initial Dever 0.0.1

test/rust/compiler/database/scalar.rs

@@ -0,0 +1,42 @@
+use super::{ERROR, packages};
+
+#[test]
+fn scalar_columns_keep_distinct_precision_and_query_bindings() {
+    let program = packages(&[
+        ("dever.database", ERROR),
+        ("demo.account.model", "type Account { amount: Decimal(34, 4)\nfee: Decimal(5, 2)?\nuid: Uuid unique\nday: Date\ntime: Time\nelapsed: Duration\ndocument: Json }"),
+        ("demo.account.app", "search(amount: Decimal, fee: Decimal?) (page: model.Page) { page = model.list({ where = amount >= amount and fee == fee, order = [amount.asc] }) }"),
+        ("demo.account.api", "cmd search = app.search"),
+    ]).unwrap();
+    assert_eq!(program.models[0].columns[2].decimal, Some((34, 4)));
+    assert_eq!(program.models[0].columns[3].decimal, Some((5, 2)));
+    assert_eq!(program.models[0].columns[2].limits, None);
+    assert!(program.models[0].columns[4].unique);
+}
+
+#[test]
+fn scalar_metadata_rejects_lossy_or_ambiguous_decimal_storage() {
+    for kind in [
+        "Decimal",
+        "Decimal(5)",
+        "Decimal(0, 0)",
+        "Decimal(35, 4)",
+        "Decimal(4, 5)",
+        "Decimal(4, 2, 1)",
+    ] {
+        let model = format!("type Account {{ amount: {kind} }}");
+        let error = packages(&[("demo.account.model", &model)]).unwrap_err();
+        assert_eq!(error.code, "C014", "{kind}: {error:?}");
+    }
+    for kind in ["Decimal(1, 0)", "Decimal(34, 34)", "Decimal(9, 2)?"] {
+        let model = format!("type Account {{ amount: {kind} }}");
+        packages(&[("demo.account.model", &model)]).unwrap();
+    }
+    for kind in ["List<Int>", "Id", "Secret"] {
+        let model = format!("type Account {{ value: {kind} }}");
+        assert!(
+            packages(&[("demo.account.model", &model)]).is_err(),
+            "{kind}"
+        );
+    }
+}