test(ariadne): cover pipeline prerequisites

src/ariadne/pipeline_test.rs

@@ -0,0 +1,22 @@
+use ariadne::pipeline::Stage;
+
+#[test]
+fn with_prerequisites_orders_prerequisites_before_target() {
+    assert_eq!(
+        Stage::AddJumpEdges.with_prerequisites(),
+        [Stage::Parse, Stage::AddJumpEdges]
+    );
+}
+
+#[test]
+fn with_prerequisites_deduplicates_shared_prerequisites() {
+    assert_eq!(
+        Stage::All.with_prerequisites(),
+        [
+            Stage::Parse,
+            Stage::AddImplicitEdges,
+            Stage::AddInitEdges,
+            Stage::AddJumpEdges,
+        ]
+    );
+}