def test_set_trailing():
    assert format_code("{3,}") == "{3,}"

def test_assert():
    assert format_code("assert    a") == "assert a"
    assert format_code("assert    a         ,   b") == "assert a, b"

def test_dict_comprehension():
    assert format_code("{  x    :  z      for  x     in     x   }") == "{x: z for x in x}"

def test_def_arguments_dict_argument():
    assert format_code("def a(  ** b  ):\n    pass") == "def a(**b):\n    pass\n"

def test_raise():
    assert format_code("raise      Exception()") == "raise Exception()"
    assert format_code("raise      Exception()  ,     b") == "raise Exception(), b"
    assert format_code("raise      Exception()  ,     b    ,     c") == "raise Exception(), b, c"

def test_replace_old_comparison_operator():
    assert format_code("a <> b") == "a != b"

def test_respect_backslash():
    respect_backslash = "a ==\\\n  b"
    assert format_code(respect_backslash) == respect_backslash
    respect_backslash = "a \\\n== b"
    assert format_code(respect_backslash) == respect_backslash

def test_fix_bad_indentation_simple_too_big():
    assert format_code("if a:\n            pass") == "if a:\n    pass\n"

def test_fix_indentation_complex():
    print("result:")
    print(format_code(bad_indentation))
    print("expected:")
    print(bad_indentation_fixed)
    assert format_code(bad_indentation) == bad_indentation_fixed

def test_replace_tabs():
    assert format_code("if a:\n    if b:\n	pass\n\n") == "if a:\n    if b:\n        pass\n\n"

def test_funcdef():
    assert format_code("def  a   (    )   :\n    pass") == "def a():\n    pass\n"

def test_simily_print_function_stuff():
    assert format_code("print(a)") == "print(a)"

def test_empty_comment_no_space():
    assert format_code("#") == "#"

def test_dict_trailing():
    assert format_code("{3: 3,}") == "{3: 3,}"

def test_split_semicolon():
    assert format_code("a;b") == "a\nb"

def test_bug_reindent_tabs():
    assert format_code(bug_reindent_tabs) == bug_reindent_tabs_fixed

def test_split_semicolon_indented():
    assert format_code("\n    a;b") == "\n    a\n    b"

def test_call_argument():
    assert format_code("a(  b   =      c )") == "a(b=c)"

def test_comment_previous_endl_indent_regression_test():
    assert format_code(comment_previous_endl_indent) == comment_previous_endl_indent

def test_blank_lines_arround_functions_first_level():
    assert format_code(root_level_function) == root_level_function_fixed