def test_basic_math(qtbot):
widget = ExprEdit(text='2*cos(pi) + 20/5')
show(locals())
assert widget.getSymbols() == dict()
assert widget.getExpr() == 2
assert widget.getValue() == 2
widget = ExprEdit(text='2*cos(pi) + pi')
show(locals())
assert widget.getSymbols() == dict()
assert widget.getExpr() == parseExpr('-2 + pi')
assert widget.getExpr() != parseExpr('-2 + pi').evalf()
assert widget.getValue() == parseExpr('-2 + pi').evalf()
def test_constructor_text(qtbot):
widget = ExprEdit(text='text')
show(locals())
assert bool(widget.getError()) is False
assert getCurrentColor(
widget, 'Background').names[0] == widget.defaultColors['default'][0]
assert list(widget.getSymbols().values()) == [Symbol('text')]
def test_constructor(qtbot):
widget = ExprEdit()
show(locals())
assert widget.getError() is None
assert getCurrentColor(
widget, 'Background').names[0] == widget.defaultColors['blank'][0]
assert dict() == widget.getSymbols()
def test_constructor_symbols(qtbot):
widget = ExprEdit(text='word')
show(locals())
syms = widget.getSymbols()
assert set(syms.keys()) == {'word'}
assert widget.getExpr().subs({'word': 3}) == 3
# 'var' is a function somewhere in sympy
widget.setText('word * 2**var')
assert bool(widget.getError()) is True
# but 'vars' is not
widget.setText('sin(word) * 2**vars')
assert widget.getError() is False
widget.setText('sin(word)*(2**expon)')
assert widget.getError() is False
assert set(widget.getSymbols().keys()) == {'word', 'expon'}
assert widget.getExpr().subs({'word': parseExpr('pi/2'), 'expon': 3}) == 8
def test_constructor_math(qtbot):
widget = ExprEdit(text='2*a_1 + b')
show(locals())
syms = widget.getSymbols()
assert set(syms.keys()) == {'a_1', 'b'}
assert widget.getExpr().subs({'a_1': 3, 'b': 2}) == 8