/*
 * Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.helidon.service.configuration.kubernetes;

import java.io.IOException;

import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class TestKubernetesSystem {

  public TestKubernetesSystem() {
    super();
  }

  @Test
  public void testEnabled() throws IOException {
    final KubernetesSystem system = new KubernetesSystem();
    final Path proc1CpuSet = Paths.get("/proc/1/cpuset"); 

    if (Files.exists(proc1CpuSet)) {
      final String singleLine = Files.lines(proc1CpuSet).findAny().get();
      assertNotNull(singleLine);
      if (singleLine.startsWith("/kubepods/")) {
        assertTrue(system.isEnabled());
      } else {
        assertFalse(system.isEnabled());
      }
    } else {
      assertFalse(system.isEnabled());
    }
  }
  
}
