1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructionsTests.java b/src/test/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructionsTests.java
index 07a5d7b0..2fef1222 100644
--- a/src/test/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructionsTests.java
+++ b/src/test/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructionsTests.java
@@ -187,6 +187,19 @@ public class WasmBinaryFormatInstructionsTests {
         snapshotter.assertSnapshot(result);
     }
 
+    @Test
+    public void canSerializeI64ExtendI32Unsigned(Snapshotter snapshotter) throws IOException, InterruptedException {
+        var instructions = List.of(
+            new WasmI32Const(0),
+            new WasmI64ExtendI32Unsigned(),
+            new WasmDrop()
+        );
+
+        var result = serializeInstructions(instructions);
+
+        snapshotter.assertSnapshot(result);
+    }
+
     // == Exception Instructions (v3 proposal) ==
 
     @Test