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test_cookiecutter_generation.py
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test_cookiecutter_generation.py
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import os
import re
import pytest
from cookiecutter.exceptions import FailedHookException
import sh
import yaml
from binaryornot.check import is_binary
PATTERN = r"{{(\s?cookiecutter)[.](.*?)}}"
RE_OBJ = re.compile(PATTERN)
@pytest.fixture
def context():
return {
"project_name": "My Test Project",
"project_slug": "my_test_project",
"author_name": "Test Author",
"email": "test@example.com",
"description": "A short description of the project.",
"domain_name": "example.com",
"version": "0.1.0",
"timezone": "UTC",
}
SUPPORTED_COMBINATIONS = [
{"open_source_license": "MIT"},
{"open_source_license": "BSD"},
{"open_source_license": "GPLv3"},
{"open_source_license": "Apache Software License 2.0"},
{"open_source_license": "Not open source"},
{"windows": "y"},
{"windows": "n"},
{"use_pycharm": "y"},
{"use_pycharm": "n"},
{"use_docker": "y"},
{"use_docker": "n"},
{"postgresql_version": "13.2"},
{"postgresql_version": "12.6"},
{"postgresql_version": "11.11"},
{"postgresql_version": "10.16"},
{"cloud_provider": "AWS", "use_whitenoise": "y"},
{"cloud_provider": "AWS", "use_whitenoise": "n"},
{"cloud_provider": "GCP", "use_whitenoise": "y"},
{"cloud_provider": "GCP", "use_whitenoise": "n"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Mailgun"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Mailjet"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Mandrill"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Postmark"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Sendgrid"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "SendinBlue"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "SparkPost"},
{"cloud_provider": "None", "use_whitenoise": "y", "mail_service": "Other SMTP"},
# Note: cloud_provider=None AND use_whitenoise=n is not supported
{"cloud_provider": "AWS", "mail_service": "Mailgun"},
{"cloud_provider": "AWS", "mail_service": "Amazon SES"},
{"cloud_provider": "AWS", "mail_service": "Mailjet"},
{"cloud_provider": "AWS", "mail_service": "Mandrill"},
{"cloud_provider": "AWS", "mail_service": "Postmark"},
{"cloud_provider": "AWS", "mail_service": "Sendgrid"},
{"cloud_provider": "AWS", "mail_service": "SendinBlue"},
{"cloud_provider": "AWS", "mail_service": "SparkPost"},
{"cloud_provider": "AWS", "mail_service": "Other SMTP"},
{"cloud_provider": "GCP", "mail_service": "Mailgun"},
{"cloud_provider": "GCP", "mail_service": "Mailjet"},
{"cloud_provider": "GCP", "mail_service": "Mandrill"},
{"cloud_provider": "GCP", "mail_service": "Postmark"},
{"cloud_provider": "GCP", "mail_service": "Sendgrid"},
{"cloud_provider": "GCP", "mail_service": "SendinBlue"},
{"cloud_provider": "GCP", "mail_service": "SparkPost"},
{"cloud_provider": "GCP", "mail_service": "Other SMTP"},
# Note: cloud_providers GCP and None with mail_service Amazon SES is not supported
{"use_async": "y"},
{"use_async": "n"},
{"use_drf": "y"},
{"use_drf": "n"},
{"js_task_runner": "None"},
{"js_task_runner": "Gulp"},
{"custom_bootstrap_compilation": "y"},
{"custom_bootstrap_compilation": "n"},
{"use_compressor": "y"},
{"use_compressor": "n"},
{"use_celery": "y"},
{"use_celery": "n"},
{"use_mailhog": "y"},
{"use_mailhog": "n"},
{"use_sentry": "y"},
{"use_sentry": "n"},
{"use_whitenoise": "y"},
{"use_whitenoise": "n"},
{"use_heroku": "y"},
{"use_heroku": "n"},
{"ci_tool": "None"},
{"ci_tool": "Travis"},
{"ci_tool": "Gitlab"},
{"ci_tool": "Github"},
{"keep_local_envs_in_vcs": "y"},
{"keep_local_envs_in_vcs": "n"},
{"debug": "y"},
{"debug": "n"},
]
UNSUPPORTED_COMBINATIONS = [
{"cloud_provider": "None", "use_whitenoise": "n"},
{"cloud_provider": "GCP", "mail_service": "Amazon SES"},
{"cloud_provider": "None", "mail_service": "Amazon SES"},
]
def _fixture_id(ctx):
"""Helper to get a user friendly test name from the parametrized context."""
return "-".join(f"{key}:{value}" for key, value in ctx.items())
def build_files_list(root_dir):
"""Build a list containing absolute paths to the generated files."""
return [
os.path.join(dirpath, file_path)
for dirpath, subdirs, files in os.walk(root_dir)
for file_path in files
]
def check_paths(paths):
"""Method to check all paths have correct substitutions."""
# Assert that no match is found in any of the files
for path in paths:
if is_binary(path):
continue
for line in open(path, "r"):
match = RE_OBJ.search(line)
assert match is None, f"cookiecutter variable not replaced in {path}"
@pytest.mark.parametrize("context_override", SUPPORTED_COMBINATIONS, ids=_fixture_id)
def test_project_generation(cookies, context, context_override):
"""Test that project is generated and fully rendered."""
result = cookies.bake(extra_context={**context, **context_override})
assert result.exit_code == 0
assert result.exception is None
assert result.project.basename == context["project_slug"]
assert result.project.isdir()
paths = build_files_list(str(result.project))
assert paths
check_paths(paths)
@pytest.mark.parametrize("context_override", SUPPORTED_COMBINATIONS, ids=_fixture_id)
def test_flake8_passes(cookies, context_override):
"""Generated project should pass flake8."""
result = cookies.bake(extra_context=context_override)
try:
sh.flake8(_cwd=str(result.project))
except sh.ErrorReturnCode as e:
pytest.fail(e.stdout.decode())
@pytest.mark.parametrize("context_override", SUPPORTED_COMBINATIONS, ids=_fixture_id)
def test_black_passes(cookies, context_override):
"""Generated project should pass black."""
result = cookies.bake(extra_context=context_override)
try:
sh.black(
"--check", "--diff", "--exclude", "migrations", _cwd=str(result.project)
)
except sh.ErrorReturnCode as e:
pytest.fail(e.stdout.decode())
@pytest.mark.parametrize(
["use_docker", "expected_test_script"],
[
("n", "pytest"),
("y", "docker-compose -f local.yml run django pytest"),
],
)
def test_travis_invokes_pytest(cookies, context, use_docker, expected_test_script):
context.update({"ci_tool": "Travis", "use_docker": use_docker})
result = cookies.bake(extra_context=context)
assert result.exit_code == 0
assert result.exception is None
assert result.project.basename == context["project_slug"]
assert result.project.isdir()
with open(f"{result.project}/.travis.yml", "r") as travis_yml:
try:
yml = yaml.safe_load(travis_yml)["jobs"]["include"]
assert yml[0]["script"] == ["flake8"]
assert yml[1]["script"] == [expected_test_script]
except yaml.YAMLError as e:
pytest.fail(str(e))
@pytest.mark.parametrize(
["use_docker", "expected_test_script"],
[
("n", "pytest"),
("y", "docker-compose -f local.yml run django pytest"),
],
)
def test_gitlab_invokes_flake8_and_pytest(
cookies, context, use_docker, expected_test_script
):
context.update({"ci_tool": "Gitlab", "use_docker": use_docker})
result = cookies.bake(extra_context=context)
assert result.exit_code == 0
assert result.exception is None
assert result.project.basename == context["project_slug"]
assert result.project.isdir()
with open(f"{result.project}/.gitlab-ci.yml", "r") as gitlab_yml:
try:
gitlab_config = yaml.safe_load(gitlab_yml)
assert gitlab_config["flake8"]["script"] == ["flake8"]
assert gitlab_config["pytest"]["script"] == [expected_test_script]
except yaml.YAMLError as e:
pytest.fail(e)
@pytest.mark.parametrize(
["use_docker", "expected_test_script"],
[
("n", "pytest"),
("y", "docker-compose -f local.yml run django pytest"),
],
)
def test_github_invokes_linter_and_pytest(
cookies, context, use_docker, expected_test_script
):
context.update({"ci_tool": "Github", "use_docker": use_docker})
result = cookies.bake(extra_context=context)
assert result.exit_code == 0
assert result.exception is None
assert result.project.basename == context["project_slug"]
assert result.project.isdir()
with open(f"{result.project}/.github/workflows/ci.yml", "r") as github_yml:
try:
github_config = yaml.safe_load(github_yml)
linter_present = False
for action_step in github_config["jobs"]["linter"]["steps"]:
if action_step.get("uses", "NA").startswith("pre-commit"):
linter_present = True
assert linter_present
expected_test_script_present = False
for action_step in github_config["jobs"]["pytest"]["steps"]:
if action_step.get("run") == expected_test_script:
expected_test_script_present = True
assert expected_test_script_present
except yaml.YAMLError as e:
pytest.fail(e)
@pytest.mark.parametrize("slug", ["project slug", "Project_Slug"])
def test_invalid_slug(cookies, context, slug):
"""Invalid slug should failed pre-generation hook."""
context.update({"project_slug": slug})
result = cookies.bake(extra_context=context)
assert result.exit_code != 0
assert isinstance(result.exception, FailedHookException)
@pytest.mark.parametrize("invalid_context", UNSUPPORTED_COMBINATIONS)
def test_error_if_incompatible(cookies, context, invalid_context):
"""It should not generate project an incompatible combination is selected."""
context.update(invalid_context)
result = cookies.bake(extra_context=context)
assert result.exit_code != 0
assert isinstance(result.exception, FailedHookException)