68 lines
2.4 KiB
Python
68 lines
2.4 KiB
Python
# Copyright 2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import hashlib
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from deepdiff import DeepDiff
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from pathlib import Path
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STAGES = Path(__file__).parents[4] / 'fast/stages'
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STAGE_PEERING = STAGES / '2-networking-a-peering'
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STAGE_VPN = STAGES / '2-networking-b-vpn'
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def test_vpn_peering_parity(plan_summary):
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'''Ensure VPN- and peering-based networking stages are identical except
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for VPN and VPC peering resources'''
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summary_peering = plan_summary("fast/stages/2-networking-a-peering",
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tf_var_files=["common.tfvars"])
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summary_vpn = plan_summary("fast/stages/2-networking-b-vpn",
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tf_var_files=["common.tfvars"])
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ddiff = DeepDiff(summary_vpn.values, summary_peering.values,
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ignore_order=True)
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removed_types = {x.split('.')[-2] for x in ddiff['dictionary_item_removed']}
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added_types = {x.split('.')[-2] for x in ddiff['dictionary_item_added']}
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assert added_types == {'google_compute_network_peering'}
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assert removed_types == {
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'google_compute_ha_vpn_gateway', 'google_compute_router',
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'google_compute_router_interface', 'google_compute_router_peer',
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'google_compute_vpn_tunnel', 'random_id'
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}
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def compute_md5(filename):
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with open(filename, "rb") as f:
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md5hash = hashlib.md5()
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while chunk := f.read(8192):
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md5hash.update(chunk)
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return md5hash.hexdigest()
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def test_vpn_peering_checksums():
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'''Compare MD5 sums of common files in the vpn and peering
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networking stages'''
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peering_files = {
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x.name for x in STAGE_PEERING.glob("*.tf") if not x.is_symlink()
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}
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vpn_files = {x.name for x in STAGE_VPN.glob("*.tf") if not x.is_symlink()}
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common_files = peering_files & vpn_files
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for filename in common_files:
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md5_vpn = compute_md5(STAGE_VPN / filename)
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md5_peering = compute_md5(STAGE_PEERING / filename)
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assert md5_vpn == md5_peering, filename
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