---

public class CertificateLoader {
  private CertificateLoader() {}

  public static KeyStore load() {
    try {
      InputStream is = Files.newInputStream(
          Paths.get(AuthConfiguration.CERTIFICATE_PATH));
      
      if (is == null) {
        throw new AuthException("Сертификат не найден.", null);
      } else {
        System.out.println("Путь к сертификату: " + is);
      }
      
      KeyStore keyStore = KeyStore.getInstance("PKCS12");
      keyStore.load(is, AuthConfiguration.CERTIFICATE_PASSWORD.toCharArray());
      return keyStore;
    } catch (Exception e) {
      System.out.println("Путь к сертификату из catch: " + CertificateLoader.class.getClassLoader().getResourceAsStream(AuthConfiguration.CERTIFICATE_PATH));
      throw new AuthException("Не могу загрузить сертификат, ошибка: ", e);
    }
  }
}

---

    KeyStore keyStore = CertificateLoader.load();
    System.out.println("CERTIFICATE_PATH: " + AuthConfiguration.CERTIFICATE_PATH);
    System.out.println("keyStore: " + keyStore);
    Response response2 = RestAssured
        .given()
        .config(RestAssured.config()
            .sslConfig(new SSLConfig().keyStore(String.valueOf(keyStore),
                AuthConfiguration.CERTIFICATE_PASSWORD)))
        .when()
        .get(AuthConfiguration.AUTH_URL);
        
---

Путь к сертификату: sun.nio.ch.ChannelInputStream@68f32020
CERTIFICATE_PATH: src/main/resources/16733424.p12
keyStore: java.security.KeyStore@61dde151

java.io.FileNotFoundException: java.security.KeyStore@61dde151 (Нет такого файла или каталога)

	at java.base/java.io.FileInputStream.open0(Native Method)
	at java.base/java.io.FileInputStream.open(FileInputStream.java:213)
	at java.base/java.io.FileInputStream.<init>(FileInputStream.java:152)
	at org.codehaus.groovy.runtime.ResourceGroovyMethods.newInputStream(ResourceGroovyMethods.java:2216)
	at org.codehaus.groovy.runtime.ResourceGroovyMethods.withInputStream(ResourceGroovyMethods.java:1920)
	at org.codehaus.groovy.runtime.dgm$1161.invoke(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:253)
	at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:57)