1 files changed, 36 insertions, 0 deletions
diff --git a/tvix/eval/src/tests/one_offs.rs b/tvix/eval/src/tests/one_offs.rs
new file mode 100644
index 000000000000..21e9144baf64
--- /dev/null
+++ b/tvix/eval/src/tests/one_offs.rs
@@ -0,0 +1,36 @@
+use crate::*;
+
+#[test]
+fn test_source_builtin() {
+    // Test an evaluation with a source-only builtin. The test ensures
+    // that the artificially constructed thunking is correct.
+
+    let mut eval = Evaluation::new_pure();
+    eval.src_builtins.push(("testSourceBuiltin", "42"));
+
+    let result = eval.evaluate("builtins.testSourceBuiltin", None);
+    assert!(
+        result.errors.is_empty(),
+        "evaluation failed: {:?}",
+        result.errors
+    );
+
+    let value = result.value.unwrap();
+    assert!(
+        matches!(value, Value::Integer(42)),
+        "expected the integer 42, but got {}",
+        value,
+    );
+}
+
+#[test]
+fn skip_broken_bytecode() {
+    let result = Evaluation::new_pure().evaluate(/* code = */ "x", None);
+
+    assert_eq!(result.errors.len(), 1);
+
+    assert!(matches!(
+        result.errors[0].kind,
+        ErrorKind::UnknownStaticVariable
+    ));
+}