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"""
Tools Test Suite
Test all functionality of the tools package.
"""
import pytest
from circuits import Component, reprhandler
from circuits.tools import findroot, inspect, kill, tryimport
class A(Component):
def foo(self):
print('A!')
class B(Component):
def foo(self):
print('B!')
class C(Component):
def foo(self):
print('C!')
class D(Component):
def foo(self):
print('D!')
class E(Component):
def foo(self):
print('E!')
class F(Component):
def foo(self):
print('F!')
def test_kill():
a = A()
b = B()
c = C()
d = D()
e = E()
f = F()
a += b
b += c
e += f
d += e
a += d
assert a.parent == a
assert b.parent == a
assert c.parent == b
assert not c.components
assert b in a.components
assert d in a.components
assert d.parent == a
assert e.parent == d
assert f.parent == e
assert f in e.components
assert e in d.components
assert not f.components
assert kill(d) is None
while len(a):
a.flush()
assert a.parent == a
assert b.parent == a
assert c.parent == b
assert not c.components
assert b in a.components
assert d not in a.components
assert e not in d.components
assert f not in e.components
assert d.parent == d
assert e.parent == e
assert f.parent == f
assert not d.components
assert not e.components
assert not f.components
def test_inspect():
a = A()
s = inspect(a)
assert 'Components: 0' in s
assert 'Event Handlers: 2' in s
assert 'foo; 1' in s
assert '<handler[*][foo] (A.foo)>' in s
assert 'prepare_unregister_complete; 1' in s
assert '<handler[<instance of A>][prepare_unregister_complete] (A._on_prepare_unregister_complete)>' in s
def test_findroot():
a = A()
b = B()
c = C()
a += b
b += c
root = findroot(a)
assert root == a
root = findroot(b)
assert root == a
root = findroot(c)
assert root == a
def test_reprhandler():
a = A()
s = reprhandler(a.foo)
assert s == '<handler[*][foo] (A.foo)>'
pytest.raises(AttributeError, reprhandler, lambda: None)
def test_tryimport():
import os
m = tryimport('os')
assert m is os
def test_tryimport_obj():
from os import path
m = tryimport('os', 'path')
assert m is path
def test_tryimport_fail():
m = tryimport('asdf')
assert m is None
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