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from .context import assert_equal
import pytest
from sympy import exp, sin, Symbol, E
x = Symbol('x', real=True)
y = Symbol('y', real=True)
def test_exp_letter():
assert_equal("e", E)
assert_equal("e", exp(1))
def test_exp_func():
assert_equal("\\exp(3)", exp(3))
def test_exp_func_no_delim():
assert_equal("\\exp3", exp(3))
def test_exp_command_symbol():
assert_equal("\\exponentialE", E)
assert_equal("\\exponentialE", exp(1))
def test_exp_command_symbol_expression():
assert_equal("\\exponentialE^{3}", exp(3))
def test_exp_command_symbol_multiplied():
'''
\\exponentialE is NOT a function, so using the following notation equates to multiplication
'''
assert_equal("\\exponentialE (3)", E * 3)
assert_equal("\\exponentialE \\left( 3\\right)", E * 3)
assert_equal("\\exponentialE \\times 3", E * 3)
def test_exp_numeric():
assert_equal("e^3", exp(3))
def test_exp_symbol():
assert_equal("e^x", exp(x))
def test_exp_symbol_expr():
assert_equal("e^{x+y}", exp(x + y))
def test_exp_symbol_expr_group():
assert_equal("e^{(x+y)}", exp(x + y))
def test_exp_expr():
assert_equal("\\sin(x)*e^x", sin(x) * exp(x))
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