fix/other two tests in ExampleGeneratorTest

Author: yonghanlin

modules/openapi-generator/src/test/java/org/openapitools/codegen/ExampleGeneratorTest.java

@@ -43,7 +43,7 @@ public void generateFromResponseSchemaWithPrimitiveType() {
     }
 
     @Test
-    public void generateFromResponseSchemaWithDateFormat() {
+    public void generateFromResponseSchemaWithDateFormat() throws Exception {
         OpenAPI openAPI = TestUtils.parseFlattenSpec("src/test/resources/3_0/example_generator_test.yaml");
 
         new InlineModelResolver().flatten(openAPI);
@@ -65,9 +65,11 @@ public void generateFromResponseSchemaWithDateFormat() {
                 mediaTypeKeys
         );
 
+        ObjectMapper mapper = new ObjectMapper();
+
         assertEquals(1, examples.size());
         assertEquals("application/json", examples.get(0).get("contentType"));
-        assertEquals(String.format(Locale.ROOT, "{%n  \"date_with_example\" : \"2024-01-01\",%n  \"date_without_example\" : \"2000-01-23\"%n}"), examples.get(0).get("example"));
+        assertEquals(mapper.readTree(String.format(Locale.ROOT, "{%n  \"date_with_example\" : \"2024-01-01\",%n  \"date_without_example\" : \"2000-01-23\"%n}")), mapper.readTree(examples.get(0).get("example")));     
         assertEquals("200", examples.get(0).get("statusCode"));
     }
 
@@ -214,7 +216,7 @@ public void generateFromResponseSchemaWithModel() {
     }
 
     @Test
-    public void generateFromResponseSchemaWithAllOfComposedModel() {
+    public void generateFromResponseSchemaWithAllOfComposedModel() throws Exception{
         OpenAPI openAPI = TestUtils.parseFlattenSpec("src/test/resources/3_0/example_generator_test.yaml");
 
         new InlineModelResolver().flatten(openAPI);
@@ -236,9 +238,11 @@ public void generateFromResponseSchemaWithAllOfComposedModel() {
                 mediaTypeKeys
         );
 
+        ObjectMapper mapper = new ObjectMapper();
+
         assertEquals(1, examples.size());
         assertEquals("application/json", examples.get(0).get("contentType"));
-        assertEquals(String.format(Locale.ROOT, "{%n  \"example_schema_property_composed\" : \"example schema property value composed\",%n  \"example_schema_property\" : \"example schema property value\"%n}"), examples.get(0).get("example"));
+        assertEquals(mapper.readTree(String.format(Locale.ROOT, "{%n  \"example_schema_property_composed\" : \"example schema property value composed\",%n  \"example_schema_property\" : \"example schema property value\"%n}")), mapper.readTree(examples.get(0).get("example")));
         assertEquals("200", examples.get(0).get("statusCode"));
     }