Method _expect_echo_toggle

tests/test_expect.py:342–380

(self, p)

        assert index == 0, "index="+str(index)

    def _expect_echo_toggle(self, p):
        p.sendline (b'1234') # Should see this twice (once from tty echo and again from cat).
        index = p.expect ([
            b'1234',
            b'abcd',
            b'wxyz',
            pexpect.EOF,
            pexpect.TIMEOUT])
        assert index == 0, "index="+str(index)+"\n"+p.before
        index = p.expect ([
            b'1234',
            b'abcd',
            b'wxyz',
            pexpect.EOF])
        assert index == 0, "index="+str(index)
        p.setecho(0) # Turn off tty echo
        p.waitnoecho()
        p.sendline (b'abcd') # Now, should only see this once.
        p.sendline (b'wxyz') # Should also be only once.
        index = p.expect ([
            pexpect.EOF,
            pexpect.TIMEOUT,
            b'abcd',
            b'wxyz',
            b'1234'])
        assert index == 2, "index="+str(index)
        index = p.expect ([
            pexpect.EOF,
            b'abcd',
            b'wxyz',
            b'7890'])
        assert index == 2, "index="+str(index)
        p.setecho(1) # Turn on tty echo
        p.sendline (b'7890') # Should see this twice.
        index = p.expect ([pexpect.EOF,b'abcd',b'wxyz',b'7890'])
        assert index == 3, "index="+str(index)
        index = p.expect ([pexpect.EOF,b'abcd',b'wxyz',b'7890'])
        assert index == 3, "index="+str(index)
        p.sendeof()

    def test_expect_index (self):
        '''This tests that mixed list of regex strings, TIMEOUT, and EOF all