class ExternalCommandRequirementTest

class ExternalCommandRequirementTest extends TestCase {
  
  /**
   * @covers ::checkExternalCommandRequirements
   */
  public function testCheckExternalCommandRequirementsNotAvailable() {
    $requires = new UsesCommandRequirements();
    $ref_check_requirements = new \ReflectionMethod($requires, 'checkExternalCommandRequirements');
    $ref_check_requirements->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $ref_check_requirements->invokeArgs($requires, [
        [
          'externalCommand not_available',
          'externalCommand available_command',
        ],
      ]);
      $this->fail('Unavailable external command requirement should throw a skipped test error exception.');
    } catch (SkippedTestError $exception) {
      $this->assertEquals('Required external commands: not_available', $exception->getMessage());
    }
  }
  
  /**
   * @covers ::checkExternalCommandRequirements
   */
  public function testCheckExternalCommandRequirementsAvailable() {
    $requires = new UsesCommandRequirements();
    $ref_check_requirements = new \ReflectionMethod($requires, 'checkExternalCommandRequirements');
    $ref_check_requirements->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $this->assertNull($ref_check_requirements->invokeArgs($requires, [
        [
          'externalCommand available_command',
        ],
      ]));
    } catch (SkippedTestError $exception) {
      $this->fail(sprintf('The external command should be available: %s', $exception->getMessage()));
    }
  }
  
  /**
   * @covers ::checkClassCommandRequirements
   */
  public function testClassRequiresAvailable() {
    $requires = new ClassRequiresAvailable();
    $ref_check = new \ReflectionMethod($requires, 'checkClassCommandRequirements');
    $ref_check->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $this->assertNull($ref_check->invoke($requires));
    } catch (SkippedTestError $exception) {
      $this->fail(sprintf('The external command should be available: %s', $exception->getMessage()));
    }
  }
  
  /**
   * @covers ::checkClassCommandRequirements
   */
  public function testClassRequiresUnavailable() {
    $requires = new ClassRequiresUnavailable();
    $ref_check = new \ReflectionMethod($requires, 'checkClassCommandRequirements');
    $ref_check->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $this->assertNull($ref_check->invoke($requires));
      $this->fail('Unavailable external command requirement should throw a skipped test error exception.');
    } catch (SkippedTestError $exception) {
      $this->assertEquals('Required external commands: unavailable_command', $exception->getMessage());
    }
  }
  
  /**
   * @covers ::checkMethodCommandRequirements
   */
  public function testMethodRequiresAvailable() {
    $requires = new MethodRequires();
    $ref_check = new \ReflectionMethod($requires, 'checkMethodCommandRequirements');
    $ref_check->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $this->assertNull($ref_check->invoke($requires, 'testRequiresAvailable'));
    } catch (SkippedTestError $exception) {
      $this->fail(sprintf('The external command should be available: %s', $exception->getMessage()));
    }
  }
  
  /**
   * @covers ::checkMethodCommandRequirements
   */
  public function testMethodRequiresUnavailable() {
    $requires = new MethodRequires();
    $ref_check = new \ReflectionMethod($requires, 'checkMethodCommandRequirements');
    $ref_check->setAccessible(TRUE);
    // Use a try/catch block because otherwise PHPUnit might think this test is
    // legitimately skipped.
    try {
      $this->assertNull($ref_check->invoke($requires, 'testRequiresUnavailable'));
      $this->fail('Unavailable external command requirement should throw a skipped test error exception.');
    } catch (SkippedTestError $exception) {
      $this->assertEquals('Required external commands: unavailable_command', $exception->getMessage());
    }
  }

}