import pprint import test.test_support import unittest # list, tuple and dict subclasses that do or don't overwrite __repr__ class list2(list): pass class list3(list): def __repr__(self): return list.__repr__(self) class tuple2(tuple): pass class tuple3(tuple): def __repr__(self): return tuple.__repr__(self) class dict2(dict): pass class dict3(dict): def __repr__(self): return dict.__repr__(self) class QueryTestCase(unittest.TestCase): def setUp(self): self.a = list(range(100)) self.b = list(range(200)) self.a[-12] = self.b def test_basic(self): # Verify .isrecursive() and .isreadable() w/o recursion verify = self.assert_ pp = pprint.PrettyPrinter() for safe in (2, 2.0, 2j, "abc", [3], (2,2), {3: 3}, "yaddayadda", self.a, self.b): # module-level convenience functions verify(not pprint.isrecursive(safe), "expected not isrecursive for %r" % (safe,)) verify(pprint.isreadable(safe), "expected isreadable for %r" % (safe,)) # PrettyPrinter methods verify(not pp.isrecursive(safe), "expected not isrecursive for %r" % (safe,)) verify(pp.isreadable(safe), "expected isreadable for %r" % (safe,)) def test_knotted(self): # Verify .isrecursive() and .isreadable() w/ recursion # Tie a knot. self.b[67] = self.a # Messy dict. self.d = {} self.d[0] = self.d[1] = self.d[2] = self.d verify = self.assert_ pp = pprint.PrettyPrinter() for icky in self.a, self.b, self.d, (self.d, self.d): verify(pprint.isrecursive(icky), "expected isrecursive") verify(not pprint.isreadable(icky), "expected not isreadable") verify(pp.isrecursive(icky), "expected isrecursive") verify(not pp.isreadable(icky), "expected not isreadable") # Break the cycles. self.d.clear() del self.a[:] del self.b[:] for safe in self.a, self.b, self.d, (self.d, self.d): # module-level convenience functions verify(not pprint.isrecursive(safe), "expected not isrecursive for %r" % (safe,)) verify(pprint.isreadable(safe), "expected isreadable for %r" % (safe,)) # PrettyPrinter methods verify(not pp.isrecursive(safe), "expected not isrecursive for %r" % (safe,)) verify(pp.isreadable(safe), "expected isreadable for %r" % (safe,)) def test_unreadable(self): # Not recursive but not readable anyway verify = self.assert_ pp = pprint.PrettyPrinter() for unreadable in type(3), pprint, pprint.isrecursive: # module-level convenience functions verify(not pprint.isrecursive(unreadable), "expected not isrecursive for %r" % (unreadable,)) verify(not pprint.isreadable(unreadable), "expected not isreadable for %r" % (unreadable,)) # PrettyPrinter methods verify(not pp.isrecursive(unreadable), "expected not isrecursive for %r" % (unreadable,)) verify(not pp.isreadable(unreadable), "expected not isreadable for %r" % (unreadable,)) def test_same_as_repr(self): # Simple objects, small containers and classes that overwrite __repr__ # For those the result should be the same as repr(). # Ahem. The docs don't say anything about that -- this appears to # be testing an implementation quirk. Starting in Python 2.5, it's # not true for dicts: pprint always sorts dicts by key now; before, # it sorted a dict display if and only if the display required # multiple lines. For that reason, dicts with more than one element # aren't tested here. verify = self.assert_ for simple in (0, 0, 0+0j, 0.0, "", b"", (), tuple2(), tuple3(), [], list2(), list3(), {}, dict2(), dict3(), verify, pprint, -6, -6, -6-6j, -1.5, "x", b"x", (3,), [3], {3: 6}, (1,2), [3,4], {5: 6, 7: 8}, tuple2((1,2)), tuple3((1,2)), tuple3(range(100)), [3,4], list2([3,4]), list3([3,4]), list3(range(100)), {5: 6, 7: 8}, dict2({5: 6}), dict3({5: 6}), range(10, -11, -1) ): native = repr(simple) for function in "pformat", "saferepr": f = getattr(pprint, function) got = f(simple) verify(native == got, "expected %s got %s from pprint.%s" % (native, got, function)) def test_basic_line_wrap(self): # verify basic line-wrapping operation o = {'RPM_cal': 0, 'RPM_cal2': 48059, 'Speed_cal': 0, 'controldesk_runtime_us': 0, 'main_code_runtime_us': 0, 'read_io_runtime_us': 0, 'write_io_runtime_us': 43690} exp = """\ {'RPM_cal': 0, 'RPM_cal2': 48059, 'Speed_cal': 0, 'controldesk_runtime_us': 0, 'main_code_runtime_us': 0, 'read_io_runtime_us': 0, 'write_io_runtime_us': 43690}""" for type in [dict, dict2]: self.assertEqual(pprint.pformat(type(o)), exp) o = range(100) exp = '[%s]' % ',\n '.join(map(str, o)) for type in [list, list2]: self.assertEqual(pprint.pformat(type(o)), exp) o = tuple(range(100)) exp = '(%s)' % ',\n '.join(map(str, o)) for type in [tuple, tuple2]: self.assertEqual(pprint.pformat(type(o)), exp) # indent parameter o = range(100) exp = '[ %s]' % ',\n '.join(map(str, o)) for type in [list, list2]: self.assertEqual(pprint.pformat(type(o), indent=4), exp) def test_sorted_dict(self): # Starting in Python 2.5, pprint sorts dict displays by key regardless # of how small the dictionary may be. # Before the change, on 32-bit Windows pformat() gave order # 'a', 'c', 'b' here, so this test failed. d = {'a': 1, 'b': 1, 'c': 1} self.assertEqual(pprint.pformat(d), "{'a': 1, 'b': 1, 'c': 1}") self.assertEqual(pprint.pformat([d, d]), "[{'a': 1, 'b': 1, 'c': 1}, {'a': 1, 'b': 1, 'c': 1}]") # The next one is kind of goofy. The sorted order depends on the # alphabetic order of type names: "int" < "str" < "tuple". Before # Python 2.5, this was in the test_same_as_repr() test. It's worth # keeping around for now because it's one of few tests of pprint # against a crazy mix of types. self.assertEqual(pprint.pformat({"xy\tab\n": (3,), 5: [[]], (): {}}), r"{5: [[]], 'xy\tab\n': (3,), (): {}}") def test_subclassing(self): o = {'names with spaces': 'should be presented using repr()', 'others.should.not.be': 'like.this'} exp = """\ {'names with spaces': 'should be presented using repr()', others.should.not.be: like.this}""" self.assertEqual(DottedPrettyPrinter().pformat(o), exp) class DottedPrettyPrinter(pprint.PrettyPrinter): def format(self, object, context, maxlevels, level): if isinstance(object, str): if ' ' in object: return repr(object), 1, 0 else: return object, 0, 0 else: return pprint.PrettyPrinter.format( self, object, context, maxlevels, level) def test_main(): test.test_support.run_unittest(QueryTestCase) if __name__ == "__main__": test_main()