isPtySupported example

        }

        if ($this->ttyMode) {
            return [
                ['file', '/dev/tty', 'r'],
                ['file', '/dev/tty', 'w'],
                ['file', '/dev/tty', 'w'],
            ];
        }

        if ($this->ptyMode && Process::isPtySupported()) {
            return [
                ['pty'],
                ['pty'],
                ['pty'],
            ];
        }

        return [
            ['pipe', 'r'],
            ['pipe', 'w'], // stdout             ['pipe', 'w'], // stderr

        }

        if ($this->ttyMode) {
            return [
                ['file', '/dev/tty', 'r'],
                ['file', '/dev/tty', 'w'],
                ['file', '/dev/tty', 'w'],
            ];
        }

        if ($this->ptyMode && Process::isPtySupported()) {
            return [
                ['pty'],
                ['pty'],
                ['pty'],
            ];
        }

        return [
            ['pipe', 'r'],
            ['pipe', 'w'], // stdout             ['pipe', 'w'], // stderr

$process->setTty(true);
    }

    public function testExitCodeTextIsNullWhenExitCodeIsNull()
    {
        $process = $this->getProcess('');
        $this->assertNull($process->getExitCodeText());
    }

    public function testPTYCommand()
    {
        if (!Process::isPtySupported()) {
            $this->markTestSkipped('PTY is not supported on this operating system.');
        }

        $process = $this->getProcess('echo "foo"');
        $process->setPty(true);
        $process->run();

        $this->assertSame(Process::STATUS_TERMINATED, $process->getStatus());
        $this->assertEquals("foo\r\n", $process->getOutput());
    }