def test_tailignored(self):
c1 = BufClass()
c1.append("abcde")
c2 = c1.popleft_new_stringchain(2)
assert str(c2.copy()) == "ab", (str(c2.copy()),)
c2.append("f")
self.failUnlessEqual(str(c2.copy()), "abf")
def test_popleft_new_stringchain(self):
c = BufClass()
c.append("ab")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "a")
self.failUnlessEqual(str(c.copy()), "b")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "b")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "a")
self.failUnlessEqual(str(c.copy()), "bc")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "b")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft_new_stringchain(2)
self.failUnlessEqual(str(s), "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("ab")
c.append("c")
s = c.popleft_new_stringchain(2)
self.failUnlessEqual(str(s), "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("a")
c.append("bc")
s = c.popleft_new_stringchain(2)
self.failUnlessEqual(str(s), "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft_new_stringchain(1)
self.failUnlessEqual(str(s), "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft_new_stringchain(4) # We just silently pop them all.
self.failUnlessEqual(str(s), "abc")
self.failUnlessEqual(str(c.copy()), "")
