forward analysis 2

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/analysis/resolver/ConstantResolverTest.java

@@ -152,4 +152,34 @@ public class ConstantResolverTest {
         String result = resolver.resolve(returnExpr, context);
         assertThat(result).isEqualTo("${app.path}");
     }
+
+    @Test
+    void testConstructorAssignmentAndFieldAccess(@TempDir Path tempDir) throws IOException {
+        Path dir = tempDir.resolve("com/example");
+        Files.createDirectories(dir);
+        Files.writeString(dir.resolve("EventDto.java"),
+            "package com.example;\n" +
+            "public class EventDto {\n" +
+            "    private String eventType;\n" +
+            "    public EventDto() {\n" +
+            "        this.eventType = \"PAYMENT_SUCCESS\";\n" +
+            "    }\n" +
+            "    public String getEventType() {\n" +
+            "        return this.eventType;\n" +
+            "    }\n" +
+            "}");
+
+        CodebaseContext context = new CodebaseContext();
+        context.scan(tempDir);
+
+        TypeDeclaration td = context.getTypeDeclaration("com.example.EventDto");
+        MethodDeclaration method = td.getMethods()[1]; // getEventType
+        ReturnStatement rs = (ReturnStatement) method.getBody().statements().get(0);
+        Expression returnExpr = rs.getExpression(); // this.eventType
+
+        ConstantResolver resolver = new ConstantResolver();
+        String result = resolver.resolve(returnExpr, context);
+
+        assertThat(result).isEqualTo("PAYMENT_SUCCESS");
+    }
 }