Add test

crates/yarnspinner/tests/type_tests.rs

@@ -426,6 +426,37 @@ fn test_initial_values() -> anyhow::Result<()> {
     Ok(())
 }
 
+#[test]
+fn test_variable_storage_extended_with_program_initial_values() {
+    let source = "
+        <<declare $int = 42>>
+        <<declare $str = \"Hello\">>
+        <<declare $bool = true>>
+    ";
+
+    let result = Compiler::from_test_source(source).compile().unwrap();
+
+    let mut dialogue = Dialogue::new(
+        Box::new(MemoryVariableStorage::new()),
+        Box::new(StringTableTextProvider::new()),
+    );
+    dialogue.replace_program(result.program.unwrap());
+
+    let variable_storage = dialogue.variable_storage();
+    assert_eq!(
+        variable_storage.get("$int").unwrap(),
+        YarnValue::Number(42.0)
+    );
+    assert_eq!(
+        variable_storage.get("$str").unwrap(),
+        YarnValue::String("Hello".to_string())
+    );
+    assert_eq!(
+        variable_storage.get("$bool").unwrap(),
+        YarnValue::Boolean(true)
+    );
+}
+
 #[test]
 fn test_explicit_types() {
     let result = Compiler::from_test_source(