Add a test for interfaces on modules loaded on-demand

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/svinterfaces/load_and_derive.sv b/tests/svinterfaces/load_and_derive.sv
new file mode 100644
index 000000000..0de0de3b3
--- /dev/null
+++ b/tests/svinterfaces/load_and_derive.sv
@@ -0,0 +1,20 @@
+// This test checks that we correctly elaborate interfaces in modules, even if they are loaded on
+// demand. The "ondemand" module is defined in ondemand.sv in this directory and will be read as
+// part of the hierarchy pass.
+
+interface iface;
+  logic [7:0] x;
+  logic [7:0] y;
+endinterface
+
+module dut (input logic [7:0] x, output logic [7:0] y);
+  iface intf();
+  assign intf.x = x;
+  assign y = intf.y;
+
+  ondemand u(.intf);
+endmodule
+
+module ref (input logic [7:0] x, output logic [7:0] y);
+  assign y = ~x;
+endmodule