108 lines
4.3 KiB
Python
108 lines
4.3 KiB
Python
# Copyright 2024 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 re
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import subprocess
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import yaml
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import shutil
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import tempfile
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from pathlib import Path
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BASE_PATH = Path(__file__).parent
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COUNT_TEST_RE = re.compile(
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r'# tftest +modules=(?P<modules>\d+) +resources=(?P<resources>\d+)' +
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r'(?: +files=(?P<files>[\w@,_-]+))?' +
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r'(?: +fixtures=(?P<fixtures>[\w@,_/.-]+))?' +
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r'(?: +inventory=(?P<inventory>[\w\-.]+))?')
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def prepare_files(example, test_path, files, fixtures):
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if files is not None:
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requested_files = files.split(',')
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for f in requested_files:
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destination = test_path / example.files[f].path
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destination.parent.mkdir(parents=True, exist_ok=True)
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destination.write_text(example.files[f].content)
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if fixtures is not None:
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requested_fixtures = fixtures.split(',')
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for f in requested_fixtures:
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if f.startswith('fixtures/'):
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# fixture is specified referencing a global fixture in (tests/fixtures/)
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source = BASE_PATH.parent / f
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destination = test_path / source.name
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destination.symlink_to(source)
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else:
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# fixture is specified using an inline tftest-fixture tag
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destination = test_path / f'{f}.tf'
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destination.write_text(example.fixtures[f])
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def test_example(plan_validator, example):
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if match := COUNT_TEST_RE.search(example.code):
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# for tfvars-based tests, create the temporary directory with the
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# same parent as the original module
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directory = example.module.parent if example.type == 'tfvars' else None
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prefix = f'pytest-{example.module.name}'
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with tempfile.TemporaryDirectory(prefix=prefix, dir=directory) as tmp_path:
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tmp_path = Path(tmp_path)
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tf_var_files = []
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if example.type == 'hcl':
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(tmp_path / 'fabric').symlink_to(BASE_PATH.parents[1])
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(tmp_path / 'variables.tf').symlink_to(BASE_PATH / 'variables.tf')
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(tmp_path / 'main.tf').write_text(example.code)
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assets_path = (BASE_PATH.parent /
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str(example.module).replace('-', '_') / 'assets')
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if assets_path.exists():
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(tmp_path / 'assets').symlink_to(assets_path)
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prepare_files(example, tmp_path, match.group('files'),
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match.group('fixtures'))
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elif example.type == 'tfvars':
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(tmp_path / 'terraform.auto.tfvars').write_text(example.code)
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shutil.copytree(example.module, tmp_path, dirs_exist_ok=True)
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tf_var_files = [(tmp_path / 'terraform.auto.tfvars').resolve()]
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expected_modules = int(match.group('modules'))
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expected_resources = int(match.group('resources'))
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inventory = []
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if match.group('inventory') is not None:
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python_test_path = str(example.module).replace('-', '_')
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inventory = BASE_PATH.parent / python_test_path / 'examples'
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inventory = inventory / match.group('inventory')
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summary = plan_validator(module_path=tmp_path, inventory_paths=inventory,
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tf_var_files=tf_var_files)
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print('\n')
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print(yaml.dump({'values': summary.values}))
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print(yaml.dump({'counts': summary.counts}))
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print(yaml.dump({'outputs': summary.outputs}))
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counts = summary.counts
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num_modules, num_resources = counts['modules'], counts['resources']
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assert expected_modules == num_modules, 'wrong number of modules'
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assert expected_resources == num_resources, 'wrong number of resources'
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# TODO(jccb): this should probably be done in check_documentation
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# but we already have all the data here.
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result = subprocess.run(
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'terraform fmt -check -diff -no-color main.tf'.split(), cwd=tmp_path,
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stdout=subprocess.PIPE, encoding='utf-8')
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assert result.returncode == 0, f'terraform code not formatted correctly\n{result.stdout}'
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else:
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assert False, "can't find tftest directive"
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