87 lines
1.9 KiB
Python
87 lines
1.9 KiB
Python
#!/usr/bin/env python
|
|
# encoding: utf-8
|
|
|
|
""" Testing Expression """
|
|
|
|
|
|
from mapytex.calculus.expression import Expression
|
|
from mapytex.calculus.operator import op
|
|
|
|
|
|
def test_init_from_str():
|
|
exp = Expression("2 + 3")
|
|
assert exp.postfix_tokens == [2, 3, op.add]
|
|
|
|
|
|
def test_init_from_exp():
|
|
pass
|
|
|
|
|
|
def test_init_list():
|
|
exp = Expression([2, 3, "+"])
|
|
assert exp.postfix_tokens == [2, 3, op.add]
|
|
|
|
|
|
def test_init_one_element_int_from_str():
|
|
exp = Expression("1")
|
|
|
|
|
|
def test_init_one_element_int_from_list():
|
|
exp = Expression([1])
|
|
|
|
# def test_init_one_element_str_from_str():
|
|
# exp = Expression("x")
|
|
#
|
|
# def test_init_one_element_str_from_list():
|
|
# exp = Expression(["x"])
|
|
|
|
|
|
def test_simplify_exp():
|
|
exp = Expression("1 + 2 * 3")
|
|
simplified = exp.simplify()
|
|
ans = Expression("7")
|
|
assert ans == simplified
|
|
|
|
# def test_simplify_frac():
|
|
# exp = Expression("1/2 - 4")
|
|
# simplified = exp.simplify()
|
|
# ans = Expression("-7/2")
|
|
# assert simplified == ans
|
|
#
|
|
# def test_explain_frac():
|
|
# exp = Expression("1/2 - 4")
|
|
# simplified = exp.simplify()
|
|
#
|
|
# steps = ['\\frac{ 1 }{ 2 } - 4', \
|
|
# '\\frac{ 1 \\times 1 }{ 2 \\times 1 } - \\frac{ 4 \\times 2 }{ 1 \\times 2 }',\
|
|
# '\\frac{ 1 }{ 2 } - \\frac{ 8 }{ 2 }',\
|
|
# '\\frac{ 1 - 8 }{ 2 }',\
|
|
# '\\frac{ -7 }{ 2 }']
|
|
# assert simplified.steps == list(exp.simplify())
|
|
|
|
|
|
def test_add_exp():
|
|
e = Expression("12- 4")
|
|
f = Expression("4 + 1")
|
|
g = e + f
|
|
assert g.postfix_tokens == [12, 4, op.sub, 4, 1, op.add, op.add]
|
|
|
|
|
|
def test_mul_exp():
|
|
e = Expression("12- 4")
|
|
f = Expression("4 + 1")
|
|
g = e * f
|
|
assert g.postfix_tokens == [12, 4, op.sub, 4, 1, op.add, op.mul]
|
|
|
|
|
|
def test_neg_exp():
|
|
e = Expression("12- 4")
|
|
g = -e
|
|
assert g.postfix_tokens == [12, 4, op.sub, op.sub1]
|
|
|
|
|
|
# -----------------------------
|
|
# Reglages pour 'vim'
|
|
# vim:set autoindent expandtab tabstop=4 shiftwidth=4:
|
|
# cursor: 16 del
|