from __future__ import unicode_literals
# TODO add tests for all of these
COMPARISON_FUNCS = {
    'EQ': lambda item_value, test_value: item_value == test_value,
    'NE': lambda item_value, test_value: item_value != test_value,
    'LE': lambda item_value, test_value: item_value <= test_value,
    'LT': lambda item_value, test_value: item_value < test_value,
    'GE': lambda item_value, test_value: item_value >= test_value,
    'GT': lambda item_value, test_value: item_value > test_value,
    'NULL': lambda item_value: item_value is None,
    'NOT_NULL': lambda item_value: item_value is not None,
    'CONTAINS': lambda item_value, test_value: test_value in item_value,
    'NOT_CONTAINS': lambda item_value, test_value: test_value not in item_value,
    'BEGINS_WITH': lambda item_value, test_value: item_value.startswith(test_value),
    'IN': lambda item_value, *test_values: item_value in test_values,
    'BETWEEN': lambda item_value, lower_test_value, upper_test_value: lower_test_value <= item_value <= upper_test_value,
}


def get_comparison_func(range_comparison):
    return COMPARISON_FUNCS.get(range_comparison)