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_al(self):
c = BufClass()
c.append("ab")
self.failUnlessEqual(len(c), 2)
c.append("")
self.failUnlessEqual(len(c), 2)
c.append("c")
self.failUnlessEqual(len(c), 3)
def test_popleft(self):
c = BufClass()
c.append("ab")
s = c.popleft(1)
self.failUnlessEqual(s, "a")
self.failUnlessEqual(str(c.copy()), "b")
s = c.popleft(1)
self.failUnlessEqual(s, "b")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft(1)
self.failUnlessEqual(s, "a")
self.failUnlessEqual(str(c.copy()), "bc")
s = c.popleft(1)
self.failUnlessEqual(s, "b")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft(1)
self.failUnlessEqual(s, "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft(2)
self.failUnlessEqual(s, "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft(1)
self.failUnlessEqual(s, "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("ab")
c.append("c")
s = c.popleft(2)
self.failUnlessEqual(s, "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft(1)
self.failUnlessEqual(s, "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("a")
c.append("bc")
s = c.popleft(2)
self.failUnlessEqual(s, "ab")
self.failUnlessEqual(str(c.copy()), "c")
s = c.popleft(1)
self.failUnlessEqual(s, "c")
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
s = c.popleft(4) # We just silently pop them all.
self.failUnlessEqual(s, "abc")
self.failUnlessEqual(str(c.copy()), "")
def test_trim(self):
c = BufClass()
c.append("ab")
c.append("c")
c.trim(1)
self.failUnlessEqual(str(c.copy()), "bc")
c.trim(1)
self.failUnlessEqual(str(c.copy()), "c")
c.trim(1)
self.failUnlessEqual(str(c.copy()), "")
c.append("ab")
c.append("c")
c.trim(2)
self.failUnlessEqual(str(c.copy()), "c")
c.trim(1)
self.failUnlessEqual(str(c.copy()), "")
c.append("a")
c.append("bc")
c.trim(2)
self.failUnlessEqual(str(c.copy()), "c")
c.trim(1)
self.failUnlessEqual(str(c.copy()), "")
c.append("abc")
c.trim(4) # We just silently trim all.
self.failUnlessEqual(str(c.copy()), "")
def test_clear(self):
c1 = BufClass()
c1.append("abcd")
c1.clear()
self.failUnlessEqual(str(c1.copy()), '')
def test_appendleft(self):
c1 = BufClass()
c1.append("abcd")
c1.appendleft("ef")
self.failUnlessEqual(str(c1.copy()), "efabcd")
s = c1.popleft(1)
self.failUnlessEqual(s, "e")
s = c1.popleft(2)
self.failUnlessEqual(s, "fa")
s = c1.popleft(3)
self.failUnlessEqual(s, "bcd")
c1 = BufClass()
c1.append("abcd")
c1.popleft(1)
c1.appendleft("ef")
self.failUnlessEqual(str(c1.copy()), "efbcd")
s = c1.popleft(1)
self.failUnlessEqual(s, "e")
s = c1.popleft(2)
self.failUnlessEqual(s, "fb")
s = c1.popleft(3)
self.failUnlessEqual(s, "cd")
def test_str(self):
c = BufClass()
c.append("ab")
c.append("c")
self.failUnlessEqual(str(c), "abc")