2 files changed, 15 insertions, 0 deletions
diff --git a/src/test/java/org/shedlang/compiler/patio/PatioSerializerTests.java b/src/test/java/org/shedlang/compiler/patio/PatioSerializerTests.java
index 7b55bf1a..fced74d5 100644
--- a/src/test/java/org/shedlang/compiler/patio/PatioSerializerTests.java
+++ b/src/test/java/org/shedlang/compiler/patio/PatioSerializerTests.java
@@ -74,6 +74,17 @@ public class PatioSerializerTests {
     }
 
     @Test
+    public void canSerializeExceptionTypeDefinition() {
+        var element = Patio.exceptionTypeDefinition("Error", PatioTypes.INT);
+
+        var string = PatioTesting.serializeCompilationUnitElement(element);
+
+        assertThat(string, equalTo("""
+            (exception-type "Error" int)"""
+        ));
+    }
+
+    @Test
     public void canSerializeFunctionDeclaration() {
         var element = PatioFunctionDeclaration.builder()
             .withName("f")
diff --git a/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java b/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java
index caec005a..44ef8f25 100644
--- a/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java
+++ b/src/test/java/org/shedlang/compiler/patio/instructions/Patio.java
@@ -95,6 +95,10 @@ public class Patio {
         );
     }
 
+    public static PatioExceptionTypeDefinition exceptionTypeDefinition(String name, PatioType valueType) {
+        return new PatioExceptionTypeDefinition(name, valueType, Sources.NULL);
+    }
+
     public static PatioOperand functionPtr(String name) {
         return new PatioFunctionPtr(name);
     }