Check struct type info is present

1 files changed, 19 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/typechecker/TypeCheckerFieldAccessTests.java b/src/test/java/org/shedlang/compiler/typechecker/TypeCheckerFieldAccessTests.java
index 88ffa75a..7f8ad5fb 100644
--- a/src/test/java/org/shedlang/compiler/typechecker/TypeCheckerFieldAccessTests.java
+++ b/src/test/java/org/shedlang/compiler/typechecker/TypeCheckerFieldAccessTests.java
@@ -2,6 +2,7 @@ package org.shedlang.compiler.typechecker;
 
 import org.junit.jupiter.api.Test;
 import org.shedlang.compiler.ast.untyped.Untyped;
+import org.shedlang.compiler.typechecker.errors.MissingStructTypeInfoError;
 import org.shedlang.compiler.typechecker.errors.NoSuchFieldError;
 import org.shedlang.compiler.types.NamespaceName;
 import org.shedlang.compiler.types.StructTypeInfo;
@@ -73,4 +74,22 @@ public class TypeCheckerFieldAccessTests {
         assertThat(error.type(), equalTo(structType));
         assertThat(error.fieldName(), equalTo("name"));
     }
+
+    @Test
+    public void whenStructTypeInfoIsMissingThenErrorIsThrown() {
+        var untyped = Untyped.fieldAccess(
+            Untyped.reference("user"),
+            "name"
+        );
+        var structType = Types.struct(NamespaceName.of("Example"), "User");
+        var context = TypeCheckerContext.EMPTY
+            .enterGlobal(P.map(Map.entry("user", structType)));
+
+        var error = assertThrows(
+            MissingStructTypeInfoError.class,
+            () -> TypeChecker.typeCheckExpression(untyped, context)
+        );
+
+        assertThat(error.type(), equalTo(structType));
+    }
 }