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test_validation.py
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test_validation.py
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"""
Break crawler-user-agents.json in ways that validate.py should detect
Usage:
$ pytest test_validation.py
"""
from __future__ import print_function
import json
import subprocess
from copy import deepcopy
import pytest
def update_json_file(data):
with open('crawler-user-agents.json', 'w') as f:
json.dump(data, f, indent=2)
@pytest.fixture
def restore_original_json():
# Load original version of crawler-user-agents.json
with open('crawler-user-agents.json') as f:
original_json = json.load(f)
# By using a yield statement instead of return, all the code after
# the yield statement serves as the teardown code:
yield None
# tear down code: restore original version of crawler-user-agents.json
update_json_file(original_json)
def assert_validate_failed():
assert subprocess.call(['python', 'validate.py']) != 0
def assert_validate_passed():
assert subprocess.call(['python', 'validate.py']) == 0
def test_simple_pass(restore_original_json):
# the json must be an array of objects containing "pattern"
# there must be more than 10 instances to pass
user_agent_list = [{'pattern': 'foo',
'instances': ['foo',
'afoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foo:',
'foo.',
'!foo',
'/foo',
'foo\\',
'FoofooFoo',
'foot']}]
update_json_file(user_agent_list)
assert_validate_passed()
def test_simplest_pass(restore_original_json):
# the simplest crawler file passes
user_agent_list = [{'pattern': 'foo', 'instances': []}]
update_json_file(user_agent_list)
assert_validate_passed()
def test_schema_violation_dict1(restore_original_json):
# contract: the json must be an array
user_agent_list = {'foo':None}
update_json_file(user_agent_list)
assert_validate_failed()
def test_schema_violation_dict2(restore_original_json):
# contract: the json must be an array of objects containing "pattern"
user_agent_list = [{'foo':None}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_schema_violation_dict3(restore_original_json):
# contract: the json must be an array of objects containing "pattern" and valid properties
user_agent_list = [{'pattern':'foo', 'foo':3}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_simple_duplicate_detection(restore_original_json):
# contract: if we have the same pattern twice, it fails
user_agent_list = [{'pattern': 'foo',
'instances': ['foo',
'afoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foO:',
'foo.',
'!foo',
'/foo',
'foo\\',
'FoofooFoo',
'foot']},
{'pattern': 'foo'}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_simple_duplicate_detection2(restore_original_json):
# contract: if we have the same pattern twice, it fails (even w/o instances)
user_agent_list = [{'pattern': 'foo',
'instances': ['foo',
'afoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foo:',
'foo.',
'!foo',
'/foo',
'foo\\',
'FoofooFoo',
'foot']},
{'pattern': 'bar'},
{'pattern': 'bar'}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_subset_duplicate_detection(restore_original_json):
# contract: if a pattern matches another pattern, it fails
user_agent_list = [{'pattern': 'foo',
'instances': ['foo',
'afoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foo:',
'foo.',
'!foo',
'/foo',
'foo\\',
'FoofooFoo',
'foot']},
{'pattern': 'afoot'}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_case_sensitivity(restore_original_json):
# contract: the patterns are case sensitive
user_agent_list = [{'pattern': 'foo',
'instances': ['FOO',
'aFoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foo:',
'fOo.',
'!FOO',
'/foo',
'foo\\',
'FoofooFoo',
'foot']}]
update_json_file(user_agent_list)
assert_validate_failed()
def test_duplicate_case_insensitive_detection(restore_original_json):
# contract: fail if we have patterns that differ only in capitailization
user_agent_list = [{'pattern': 'foo',
'instances': ['foo',
'afoo',
'foob',
'cfood',
'/foo/',
'\\foo\\',
':foo:',
'foo.',
'!foo',
'/foo',
'foo\\',
'FoofooFoo',
'foot']},
{'pattern': 'fOo'}]
update_json_file(user_agent_list)
assert_validate_failed()