Remove redundant unit test

            "Default certificate version is incorrect",

        );

    }

    /// Tests `X509Ref::version`. Checks case when there was an attempt to set incorrect version

    /// before a call to the tested method.

    ///

    /// _Note._ As for now this test is disabled since OpenSSL erroneously allows to set any number

    /// as a certificate version. See corresponding [`issue`].

    ///

    /// [`issue`]: https://github.com/openssl/openssl/issues/12138

    #[cfg(ossl110)]

    #[test]

    #[ignore]

    fn x509_ref_version_incorrect_version_set() {

        let mut builder = X509Builder::new().unwrap();

        builder

            .set_version(-1)

            .expect_err("It should not be possible to set negative certificate version");

        let cert = builder.build();

        let actual_version = cert.version();

        assert_eq!(

            0, actual_version,

            "Default certificate version is incorrect",

        );

    }

}

foreign_type_and_impl_send_sync! {

    /// [`X509_get_version`]: https://www.openssl.org/docs/man1.1.1/man3/X509_get_version.html

    #[cfg(ossl110)]

    pub fn version(&self) -> i32 {

        // Covered with `x509_ref_version()`, `x509_ref_version_no_version_set()`,

        // `x509_ref_version_incorrect_version_set()` tests

        // Covered with `x509_ref_version()`, `x509_ref_version_no_version_set()` tests

        unsafe { ffi::X509_get_version(self.as_ptr()) as i32 }

    }