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name : test_dict.py
 """
Tests for dict duplicate keys Pyflakes behavior.
"""

from pyflakes import messages as m
from pyflakes.test.harness import TestCase


class Test(TestCase):

    def test_duplicate_keys(self):
        self.flakes(
            "{'yes': 1, 'yes': 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_bytes_vs_unicode_py3(self):
        self.flakes("{b'a': 1, u'a': 2}")

    def test_duplicate_values_bytes_vs_unicode_py3(self):
        self.flakes(
            "{1: b'a', 1: u'a'}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_multiple_duplicate_keys(self):
        self.flakes(
            "{'yes': 1, 'yes': 2, 'no': 2, 'no': 3}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_in_function(self):
        self.flakes(
            '''
            def f(thing):
                pass
            f({'yes': 1, 'yes': 2})
            ''',
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_in_lambda(self):
        self.flakes(
            "lambda x: {(0,1): 1, (0,1): 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_tuples(self):
        self.flakes(
            "{(0,1): 1, (0,1): 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_tuples_int_and_float(self):
        self.flakes(
            "{(0,1): 1, (0,1.0): 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_ints(self):
        self.flakes(
            "{1: 1, 1: 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_bools(self):
        self.flakes(
            "{True: 1, True: 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_bools_false(self):
        # Needed to ensure 2.x correctly coerces these from variables
        self.flakes(
            "{False: 1, False: 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_keys_none(self):
        self.flakes(
            "{None: 1, None: 2}",
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_variable_keys(self):
        self.flakes(
            '''
            a = 1
            {a: 1, a: 2}
            ''',
            m.MultiValueRepeatedKeyVariable,
            m.MultiValueRepeatedKeyVariable,
        )

    def test_duplicate_variable_values(self):
        self.flakes(
            '''
            a = 1
            b = 2
            {1: a, 1: b}
            ''',
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_variable_values_same_value(self):
        # Current behaviour is not to look up variable values. This is to
        # confirm that.
        self.flakes(
            '''
            a = 1
            b = 1
            {1: a, 1: b}
            ''',
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_duplicate_key_float_and_int(self):
        """
        These do look like different values, but when it comes to their use as
        keys, they compare as equal and so are actually duplicates.
        The literal dict {1: 1, 1.0: 1} actually becomes {1.0: 1}.
        """
        self.flakes(
            '''
            {1: 1, 1.0: 2}
            ''',
            m.MultiValueRepeatedKeyLiteral,
            m.MultiValueRepeatedKeyLiteral,
        )

    def test_no_duplicate_key_error_same_value(self):
        self.flakes('''
        {'yes': 1, 'yes': 1}
        ''')

    def test_no_duplicate_key_errors(self):
        self.flakes('''
        {'yes': 1, 'no': 2}
        ''')

    def test_no_duplicate_keys_tuples_same_first_element(self):
        self.flakes("{(0,1): 1, (0,2): 1}")

    def test_no_duplicate_key_errors_func_call(self):
        self.flakes('''
        def test(thing):
            pass
        test({True: 1, None: 2, False: 1})
        ''')

    def test_no_duplicate_key_errors_bool_or_none(self):
        self.flakes("{True: 1, None: 2, False: 1}")

    def test_no_duplicate_key_errors_ints(self):
        self.flakes('''
        {1: 1, 2: 1}
        ''')

    def test_no_duplicate_key_errors_vars(self):
        self.flakes('''
        test = 'yes'
        rest = 'yes'
        {test: 1, rest: 2}
        ''')

    def test_no_duplicate_key_errors_tuples(self):
        self.flakes('''
        {(0,1): 1, (0,2): 1}
        ''')

    def test_no_duplicate_key_errors_instance_attributes(self):
        self.flakes('''
        class Test():
            pass
        f = Test()
        f.a = 1
        {f.a: 1, f.a: 1}
        ''')
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