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());
        }
    }

}