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 attributeAccess

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about_scope.py

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#!/usr/bin/env python

# -*- coding: utf-8 -*-

from runner.koan import *

import jims

import joes

counter = 0 # Global

class AboutScope(Koan):

#

# NOTE:

# Look in jims.py and joes.py to see definitions of Dog used

# for this set of tests

#

def test_dog_is_not_available_in_the_current_scope(self):

try:

fido = Dog()

except Exception as ex:

self.assertMatch(__, ex[0])

def test_you_can_reference_nested_classes_using_the_scope_operator(self):

fido = jims.Dog()

# name 'jims' module name is taken from jims.py filename

rover = joes.Dog()

self.assertEqual(__, fido.identify())

self.assertEqual(__, rover.identify())

self.assertEqual(____, type(fido) == type(rover))

self.assertEqual(____, jims.Dog == joes.Dog)

# ------------------------------------------------------------------

class str(object):

pass

def test_bare_bones_class_names_do_not_assume_the_current_scope(self):

self.assertEqual(____, AboutScope.str == str)

def test_nested_string_is_not_the_same_as_the_system_string(self):

self.assertEqual(____, self.str == type("HI"))

def test_str_without_self_prefix_stays_in_the_global_scope(self):

self.assertEqual(____, str == type("HI"))

# ------------------------------------------------------------------

PI = 3.1416

def test_constants_are_defined_with_an_initial_uppercase_letter(self):

self.assertAlmostEqual(_____, self.PI)

# Note, floating point numbers in python are not precise.

# assertAlmostEqual will check that it is 'close enough'

def test_constants_are_assumed_by_convention_only(self):

self.PI = "rhubarb"

self.assertEqual(_____, self.PI)

# There aren't any real constants in python. Its up to the developer

# to keep to the convention and not modify them.

# ------------------------------------------------------------------

def increment_using_local_counter(self, counter):

counter = counter + 1

def increment_using_global_counter(self):

global counter

counter = counter + 1

def test_incrementing_with_local_counter(self):

global counter

start = counter

self.increment_using_local_counter(start)

self.assertEqual(____, counter == start + 1)

def test_incrementing_with_global_counter(self):

global counter

start = counter

self.increment_using_global_counter()

self.assertEqual(____, counter == start + 1)

# ------------------------------------------------------------------

global deadly_bingo

deadly_bingo = [4, 8, 15, 16, 23, 42]

def test_global_attributes_can_be_created_in_the_middle_of_a_class(self):

self.assertEqual(__, deadly_bingo[5])