Package logilab :: Package common :: Package test :: Module unittest_interface
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Source Code for Module logilab.common.test.unittest_interface

 1  from logilab.common.testlib import TestCase, unittest_main 
 2  from logilab.common.interface import * 
 3   
4 -class IFace1(Interface): pass
5 -class IFace2(Interface): pass
6 -class IFace3(Interface): pass
7 8
9 -class A(object):
10 __implements__ = (IFace1,)
11 12
13 -class B(A): pass
14 15
16 -class C1(B):
17 __implements__ = list(B.__implements__) + [IFace3]
18
19 -class C2(B):
20 __implements__ = B.__implements__ + (IFace2,)
21
22 -class D(C1):
23 __implements__ = ()
24
25 -class Z(object): pass
26
27 -class ExtendTC(TestCase):
28
29 - def setUp(self):
30 global aimpl, c1impl, c2impl, dimpl 31 aimpl = A.__implements__ 32 c1impl = C1.__implements__ 33 c2impl = C2.__implements__ 34 dimpl = D.__implements__
35
36 - def test_base(self):
37 extend(A, IFace2) 38 self.failUnlessEqual(A.__implements__, (IFace1, IFace2)) 39 self.failUnlessEqual(B.__implements__, (IFace1, IFace2)) 40 self.failUnless(B.__implements__ is A.__implements__) 41 self.failUnlessEqual(C1.__implements__, [IFace1, IFace3, IFace2]) 42 self.failUnlessEqual(C2.__implements__, (IFace1, IFace2)) 43 self.failUnless(C2.__implements__ is c2impl) 44 self.failUnlessEqual(D.__implements__, (IFace2,))
45
46 - def test_already_impl(self):
47 extend(A, IFace1) 48 self.failUnless(A.__implements__ is aimpl)
49
50 - def test_no_impl(self):
51 extend(Z, IFace1) 52 self.failUnlessEqual(Z.__implements__, (IFace1,))
53
54 - def test_notimpl_explicit(self):
55 extend(C1, IFace3) 56 self.failUnless(C1.__implements__ is c1impl) 57 self.failUnless(D.__implements__ is dimpl)
58 59
61 class SubIFace(IFace1): pass 62 class X(object): 63 __implements__ = (SubIFace,)
64 65 self.failUnless(SubIFace.is_implemented_by(X)) 66 self.failUnless(IFace1.is_implemented_by(X))
67 68 69 if __name__ == '__main__': 70 unittest_main() 71