[Bug]: Example value isn't wrapped with the type of the parameter anymore.

[EunjeongChoi414]

Describe the bug

Before the package was upgraded to 7.0.0,
the example value used to show the the type of the parameter and now it doesn't.
So it's prone to getting null exception because the argument is not passed to the server.

Expected behavior

for example when api looks like this

void TestAsync(TestParam testParam)

'example value' in swagger should be looking like this, "testParam" the type of the dto wrapping its properties.

{
  "testParam": {
    "value1": "string",
    "value2": "string",
    "value3": 0
  }
}

Actual behavior

instead, it looks like this without the dto wrapping. So when you 'try out' with below format then you get null parameter.

{
  "value1": "string",
  "value2": "string",
  "value3": 0
}

Steps to reproduce

Make an api that takes a dto as a parameter like this.

public Task TestAsync(TestParam testParam, CancellationToken cancel = default);

public record TestParam(string Value1, string Value2, bool Value3);

upgrade SwashBuckle packages to 7.0.0 or 7.0.1

<PackageReference Include="Swashbuckle.AspNetCore" Version="7.0.0" />
<PackageReference Include="Swashbuckle.AspNetCore.Annotations" Version="7.0.0" />

and check the actual behavior explained above but when trying with 6.9.0 version it works like the expected behavior.

Exception(s) (if any)

No response

Swashbuckle.AspNetCore version

7.0.0 and 7.1.0

.NET Version

net8.0

Anything else?

No response

[martincostello]

Does the OpenAPI document for the endpoint look the same between the 6.9.0 version and the 7.0.x version? If so, then this will be an issue in SwaggerUI rather than Swashbuckle.

[EunjeongChoi414]

Does the OpenAPI document for the endpoint look the same between the 6.9.0 version and the 7.0.x version? If so, then this will be an issue in SwaggerUI rather than Swashbuckle.

'look the same' meaning same as I described above?

I checked and the OpenApi documents between 6.9.0 and 7.0.x versions look different.
6.9.0 document has a "type" : "object" under "schema" and 7.0.0 doesn't.