def test_value_setter(self):
"""Set value appropriately given valid data."""
qty = Quantity()
qty.value = 100
assert qty._numerator == 100
assert qty._denominator == 1
assert not qty.is_decimal
assert qty._float == 100.0
qty.value = 100
assert qty._numerator == 100
assert qty._denominator == 1
assert not qty.is_decimal
assert qty._float == 100.0
qty.value = 3.1415
assert qty.is_decimal
assert qty._numerator is None
assert qty._denominator is None
assert qty._float == 3.1415
qty.value = '3.1415'
assert qty.is_decimal
assert qty._numerator is None
assert qty._denominator is None
assert qty._float == 3.1415
qty.value = Decimal('3.1415')
assert qty.is_decimal
assert qty._numerator is None
assert qty._denominator is None
assert qty._float == 3.1415
qty.value = Fraction(1, 2)
assert not qty.is_decimal
assert qty._numerator == 1
assert qty._denominator == 2
assert qty._float == 0.5
qty.value = Fraction(5, 2)
assert not qty.is_decimal
assert qty._numerator == 5
assert qty._denominator == 2
assert qty._float == 2.5
qty.value = '3/4'
assert not qty.is_decimal
assert qty._numerator == 3
assert qty._denominator == 4
assert qty._float == 0.75
qty.value = '1 1/4'
assert not qty.is_decimal
assert qty._numerator == 5
assert qty._denominator == 4
assert qty._float == 1.25
qty.value = None
assert qty.is_decimal is None
assert qty._numerator is None
assert qty._denominator is None
assert qty._float is None
def test_value_getter(self):
"""Return value in appropriate format."""
qty = Quantity()
qty.value = '3.1415'
assert qty.value == 3.1415
qty.value = Decimal('5.21')
assert qty.value == 5.21
qty.value = 100
assert qty.value == 100
qty.value = '100'
assert qty.value == 100
qty.value = '4/3'
assert qty.value == Fraction(4, 3)
qty.value = Fraction(1, 2)
assert qty.value == Fraction(1, 2)
qty.value = None
assert qty.value is None
def test_html_value(self):
"""Return HTML entities or special HTML for fractions.
Return a string of self.value if it is not a fraction.
"""
qty = Quantity()
qty.value = Fraction(1, 4)
assert qty.html_value == '¼'
qty.value = Fraction(1, 2)
assert qty.html_value == '½'
qty.value = Fraction(3, 4)
assert qty.html_value == '¾'
qty.value = Fraction(1, 3)
assert qty.html_value == '⅓'
qty.value = Fraction(2, 3)
assert qty.html_value == '⅔'
qty.value = Fraction(1, 5)
assert qty.html_value == '⅕'
qty.value = Fraction(2, 5)
assert qty.html_value == '⅖'
qty.value = Fraction(3, 5)
assert qty.html_value == '⅗'
qty.value = Fraction(4, 5)
assert qty.html_value == '⅘'
qty.value = Fraction(1, 6)
assert qty.html_value == '⅙'
qty.value = Fraction(5, 6)
assert qty.html_value == '⅚'
qty.value = Fraction(1, 8)
assert qty.html_value == '⅛'
qty.value = Fraction(3, 8)
assert qty.html_value == '⅜'
qty.value = Fraction(5, 8)
assert qty.html_value == '⅝'
qty.value = Fraction(7, 8)
assert qty.html_value == '⅞'
qty.value = Fraction(9, 11)
assert qty.html_value == '<span class="fraction"><sup>9</sup>⁄'\
'<sub>11</sub></span>'
qty.value = Decimal('3.1415')
assert qty.html_value == '3.1415'
qty.value = 100
assert qty.html_value == '100'
qty.value = '100'
assert qty.html_value == '100'