# devopsgym / testgen__spotbugs__spotbugs-3029

- taskset: [devopsgym](https://harnessreport.com/tasks/devopsgym.md)
- difficulty: hard
- category: test-generation
- language: 
- runnable from the site: no
- agent timeout: 3000s

## Results by harness

_none yet_

## Instruction

```
The following text contains a user issue (in <issue/> brackets) posted at a repository. Further, you are provided with file contents of several files in the repository that contain relevant code (in <code> brackets). It may be necessary to use code from third party dependencies or files not contained in the attached documents however. Your task is to identify the issue and implement a test case that verifies a proposed solution to this issue. More details at the end of this text.
<issue>
      With 4.8.4 (and latest 4.8.5-SNAPSHOT), I'm getting two false-positive errors:

```
[ERROR] Medium: Overridable method equals is called from readObject. [org.newsclub.net.unix.AFSocketAddress] At AFSocketAddress.java:[line 906] MC_OVERRIDABLE_METHOD_CALL_IN_READ_OBJECT
[ERROR] Medium: Overridable method readUTF is called from readObject. [org.newsclub.net.unix.AFSocketAddress] At AFSocketAddress.java:[line 905] MC_OVERRIDABLE_METHOD_CALL_IN_READ_OBJECT
```

Method in question:

```
private void readObject(ObjectInputStream in) throws ClassNotFoundException, IOException {
    in.defaultReadObject();

    String af = in.readUTF(); // 905 HERE
    if ("undefined".equals(af)) { // 906 HERE
      this.addressFamily = null;
    } else {
      this.addressFamily = Objects.requireNonNull(AFAddressFamily.getAddressFamily(af),
          "address family");
    }
  }
```

In 905, it's clearly a false-positive because the object has been passed as the `ObjectInputStream`.
In 906, it's clearly a false-positive because we're operating on a string constant.

I think generally, these errors should not occur because they don't work on `this` (the instance where `readObject` is called) but on some other object.

I understand MC_OVERRIDABLE_METHOD_CALL_IN_READ_OBJECT has been newly introduced in 4.8.4.

</issue>
Please generate test cases that check whether an implemented solution resolves the issue of the user (at the top, within <issue/> brackets).
You may apply changes to several files.
Apply as much reasoning as you please and see necessary.
Make sure to implement only test cases and don't try to fix the issue itself.
You are not allowed to read git history.
```
---
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