class ProcessBuilderTest

class ProcessBuilderTest extends \PHPUnit_Framework_TestCase {

  /**
   * @test
   */
  public function shouldInheritEnvironmentVars() {
    $snapshot = $_ENV;
    $_ENV = $expected = array(
      'foo' => 'bar',
    );
    $pb = new ProcessBuilder();
    $pb
      ->add('foo')
      ->inheritEnvironmentVariables();
    $proc = $pb
      ->getProcess();
    $this
      ->assertNull($proc
      ->getEnv(), '->inheritEnvironmentVariables() copies $_ENV');
    $_ENV = $snapshot;
  }

  /**
   * @test
   */
  public function shouldInheritAndOverrideEnvironmentVars() {
    $snapshot = $_ENV;
    $_ENV = array(
      'foo' => 'bar',
      'bar' => 'baz',
    );
    $expected = array(
      'foo' => 'foo',
      'bar' => 'baz',
    );
    $pb = new ProcessBuilder();
    $pb
      ->add('foo')
      ->inheritEnvironmentVariables()
      ->setEnv('foo', 'foo');
    $proc = $pb
      ->getProcess();
    $this
      ->assertEquals($expected, $proc
      ->getEnv(), '->inheritEnvironmentVariables() copies $_ENV');
    $_ENV = $snapshot;
  }

  /**
   * @test
   */
  public function shouldInheritEnvironmentVarsByDefault() {
    $pb = new ProcessBuilder();
    $proc = $pb
      ->add('foo')
      ->getProcess();
    $this
      ->assertNull($proc
      ->getEnv());
  }

  /**
   * @test
   */
  public function shouldNotReplaceExplicitlySetVars() {
    $snapshot = $_ENV;
    $_ENV = array(
      'foo' => 'bar',
    );
    $expected = array(
      'foo' => 'baz',
    );
    $pb = new ProcessBuilder();
    $pb
      ->setEnv('foo', 'baz')
      ->inheritEnvironmentVariables()
      ->add('foo');
    $proc = $pb
      ->getProcess();
    $this
      ->assertEquals($expected, $proc
      ->getEnv(), '->inheritEnvironmentVariables() copies $_ENV');
    $_ENV = $snapshot;
  }

  /**
   * @expectedException \InvalidArgumentException
   */
  public function testNegativeTimeoutFromSetter() {
    $pb = new ProcessBuilder();
    $pb
      ->setTimeout(-1);
  }
  public function testNullTimeout() {
    $pb = new ProcessBuilder();
    $pb
      ->setTimeout(10);
    $pb
      ->setTimeout(null);
    $r = new \ReflectionObject($pb);
    $p = $r
      ->getProperty('timeout');
    $p
      ->setAccessible(true);
    $this
      ->assertNull($p
      ->getValue($pb));
  }

}