def test_multilline_no_transform():
    # no subprocess transformations happen here since all variables are known
    code = 'ls = 1\nl = 1\nls -l\n'
    tree = check_parse(code)
    lsnode = tree.body[2]
    assert 3 == min_line(lsnode)
    assert isinstance(lsnode.value, BinOp)

def test_bad_indent():
    code = ('if True:\n'
            'x = 1\n')
    with pytest.raises(SyntaxError):
        check_parse(code)

def test_command_in_func_with_comment():
    code = "def f():\n" "    echo hello # comment\n"
    assert check_parse(code)

def test_indent_with_empty_line():
    code = "if True:\n" "\n" "    some_command for_sub_process_mode\n"
    assert check_parse(code)

def test_bad_indent():
    code = "if True:\n" "x = 1\n"
    with pytest.raises(SyntaxError):
        check_parse(code)

def test_lookup_anon_alias():
    code = 'echo "hi" | @(lambda a, s=None: a[0]) foo bar baz\n'
    assert check_parse(code)

def test_echo_star_with_semi():
    assert check_parse("echo * spam ; ![echo eggs]\n")

def test_which_ls():
    assert check_parse("which ls")

def test_multilline_num(line1):
    code = line1 + '\nls -l\n'
    tree = check_parse(code)
    lsnode = tree.body[1]
    assert 2 == min_line(lsnode)
    assert isinstance(lsnode.value, Call)

def test_echo_comma():
    code = 'echo ,\n'
    assert check_parse(code)

def test_good_rhs_subproc():
    # nonsense but parsebale
    code = 'str().split() | ![grep exit]\n'
    check_parse(code)

def test_command_in_func_with_comment():
    code = ('def f():\n'
            '    echo hello # comment\n')
    assert check_parse(code)

def test_command_in_func():
    code = ('def f():\n'
            '    echo hello\n')
    assert check_parse(code)

def test_indent_with_empty_line():
    code = ('if True:\n'
            '\n'
            '    some_command for_sub_process_mode\n')
    assert check_parse(code)

def test_two_echo_line_cont(code):
    assert check_parse(code)

def test_args_in_scope(inp):
    # Context sensitive parsing should not modify AST
    exp = pyast.parse(inp)
    obs = check_parse(inp)
    assert nodes_equal(exp, obs)

def test_ls_dashl():
    assert check_parse("ls -l")

def test_multilline_num():
    code = ('x = 1\n'
            'ls -l\n')  # this second line wil be transformed
    tree = check_parse(code)
    lsnode = tree.body[1]
    assert 2 == min_line(lsnode)

def test_echo_hello():
    assert check_parse("echo hello")

def test_pyeval_multiline_str():
    code = 'echo @("""hello\nmom""")\n'
    assert check_parse(code)