1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/java/org/shedlang/compiler/config/ConfigCheckerTests.java b/src/test/java/org/shedlang/compiler/config/ConfigCheckerTests.java
index 4483c639..b6134ed2 100644
--- a/src/test/java/org/shedlang/compiler/config/ConfigCheckerTests.java
+++ b/src/test/java/org/shedlang/compiler/config/ConfigCheckerTests.java
@@ -33,6 +33,19 @@ public class ConfigCheckerTests {
     }
 
     @Test
+    public void whenMainNamespaceSourceIsMissingThenBinConfigIsInvalid() throws IOException {
+        var binConfig = new BinConfig("x", NamespaceName.of("Main"));
+        var typeInfos = TypeInfos.EMPTY;
+
+        var error = assertThrows(
+            ConfigError.class,
+            () -> ConfigChecker.configCheckBin(binConfig, typeInfos)
+        );
+
+        assertThat(error.getMessage(), equalTo("Namespace Main not found"));
+    }
+
+    @Test
     public void whenMainFunctionIsMissingThenBinConfigIsInvalid() throws IOException {
         var binConfig = new BinConfig("x", NamespaceName.of("Main"));
         var typeInfos = TypeInfos.EMPTY