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https://github.com/ghndrx/prowler.git
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feat(pip): Prepare for PyPI (#1531)
This commit is contained in:
Sergio Garcia
227
tests/providers/aws/services/awslambda/awslambda_service_test.py
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227
tests/providers/aws/services/awslambda/awslambda_service_test.py
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import io
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import os
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import tempfile
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import zipfile
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from re import search
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from unittest.mock import patch
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import mock
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from boto3 import client, resource, session
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from moto import mock_iam, mock_lambda, mock_s3
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from moto.core import DEFAULT_ACCOUNT_ID
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from prowler.providers.aws.lib.audit_info.audit_info import current_audit_info
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from prowler.providers.aws.lib.audit_info.models import AWS_Audit_Info
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from prowler.providers.aws.services.awslambda.awslambda_service import AuthType, Lambda
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# Mock Test Region
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AWS_REGION = "eu-west-1"
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def create_zip_file(code: str = "") -> io.BytesIO:
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zip_output = io.BytesIO()
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zip_file = zipfile.ZipFile(zip_output, "w", zipfile.ZIP_DEFLATED)
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if not code:
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zip_file.writestr(
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"lambda_function.py",
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"""
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def lambda_handler(event, context):
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print("custom log event")
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return event
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""",
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)
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else:
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zip_file.writestr("lambda_function.py", code)
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zip_file.close()
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zip_output.seek(0)
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return zip_output
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def mock_request_get(_):
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"""Mock requests.get() to get the Lambda Code in Zip Format"""
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mock_resp = mock.MagicMock
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mock_resp.status_code = 200
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mock_resp.content = create_zip_file().read()
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return mock_resp
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# Mock generate_regional_clients()
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def mock_generate_regional_clients(service, audit_info):
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regional_client = audit_info.audit_session.client(service, region_name=AWS_REGION)
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regional_client.region = AWS_REGION
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return {AWS_REGION: regional_client}
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@patch(
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"prowler.providers.aws.services.awslambda.awslambda_service.generate_regional_clients",
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new=mock_generate_regional_clients,
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)
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class Test_Lambda_Service:
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def set_mocked_audit_info(self):
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audit_info = AWS_Audit_Info(
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original_session=None,
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audit_session=session.Session(
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profile_name=None,
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botocore_session=None,
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),
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audited_account=DEFAULT_ACCOUNT_ID,
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audited_user_id=None,
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audited_partition="aws",
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audited_identity_arn=None,
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profile=None,
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profile_region=None,
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credentials=None,
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assumed_role_info=None,
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audited_regions=None,
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organizations_metadata=None,
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)
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return audit_info
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# Test Lambda Client
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def test__get_client__(self):
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awslambda = Lambda(current_audit_info)
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assert awslambda.regional_clients[AWS_REGION].__class__.__name__ == "Lambda"
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# Test Lambda Session
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def test__get_session__(self):
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awslambda = Lambda(current_audit_info)
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assert awslambda.session.__class__.__name__ == "Session"
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# Test Lambda Service
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def test__get_service__(self):
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awslambda = Lambda(current_audit_info)
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assert awslambda.service == "lambda"
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@mock_lambda
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@mock_iam
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@mock_s3
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def test__list_functions__(self):
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# Create IAM Lambda Role
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iam_client = client("iam", region_name=AWS_REGION)
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iam_role = iam_client.create_role(
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RoleName="test-lambda-role",
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AssumeRolePolicyDocument="test-policy",
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Path="/",
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)["Role"]["Arn"]
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# Create S3 Bucket
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s3_client = resource("s3", region_name=AWS_REGION)
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s3_client.create_bucket(
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Bucket="test-bucket",
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CreateBucketConfiguration={"LocationConstraint": AWS_REGION},
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)
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# Create Test Lambda
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lambda_client = client("lambda", region_name=AWS_REGION)
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lambda_name = "test-lambda"
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resp = lambda_client.create_function(
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FunctionName=lambda_name,
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Runtime="python3.7",
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Role=iam_role,
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Handler="lambda_function.lambda_handler",
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Code={"ZipFile": create_zip_file().read()},
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Description="test lambda function",
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Timeout=3,
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MemorySize=128,
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PackageType="ZIP",
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Publish=True,
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VpcConfig={
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"SecurityGroupIds": ["sg-123abc"],
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"SubnetIds": ["subnet-123abc"],
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},
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Environment={"Variables": {"db-password": "test-password"}},
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)
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# Update Lambda Policy
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lambda_policy = {
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"Version": "2012-10-17",
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"Id": "default",
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"Statement": [
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{
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"Action": "lambda:GetFunction",
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"Principal": "*",
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"Effect": "Allow",
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"Resource": f"arn:aws:lambda:{AWS_REGION}:{DEFAULT_ACCOUNT_ID}:function:{lambda_name}",
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"Sid": "test",
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}
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],
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}
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_ = lambda_client.add_permission(
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FunctionName=lambda_name,
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StatementId="test",
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Action="lambda:GetFunction",
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Principal="*",
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)
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# Create Function URL Config
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_ = lambda_client.create_function_url_config(
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FunctionName=lambda_name,
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AuthType=AuthType.AWS_IAM.value,
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Cors={
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"AllowCredentials": True,
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"AllowHeaders": [
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"string",
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],
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"AllowMethods": [
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"string",
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],
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"AllowOrigins": [
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"*",
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],
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"ExposeHeaders": [
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"string",
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],
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"MaxAge": 123,
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},
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)
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lambda_arn = resp["FunctionArn"]
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with mock.patch(
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"prowler.providers.aws.services.awslambda.awslambda_service.requests.get",
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new=mock_request_get,
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):
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awslambda = Lambda(self.set_mocked_audit_info())
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assert awslambda.functions
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assert awslambda.functions[lambda_name].name == lambda_name
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assert awslambda.functions[lambda_name].arn == lambda_arn
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assert awslambda.functions[lambda_name].runtime == "python3.7"
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assert awslambda.functions[lambda_name].environment == {
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"db-password": "test-password"
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}
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assert awslambda.functions[lambda_name].region == AWS_REGION
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assert awslambda.functions[lambda_name].policy == lambda_policy
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assert awslambda.functions[lambda_name].code
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assert search(
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f"s3://awslambda-{AWS_REGION}-tasks.s3-{AWS_REGION}.amazonaws.com",
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awslambda.functions[lambda_name].code.location,
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)
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assert awslambda.functions[lambda_name].url_config
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assert (
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awslambda.functions[lambda_name].url_config.auth_type
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== AuthType.AWS_IAM
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)
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assert search(
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"lambda-url.eu-west-1.on.aws",
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awslambda.functions[lambda_name].url_config.url,
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)
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assert awslambda.functions[lambda_name].url_config.cors_config
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assert awslambda.functions[
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lambda_name
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].url_config.cors_config.allow_origins == ["*"]
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# Pending ZipFile tests
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with tempfile.TemporaryDirectory() as tmp_dir_name:
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awslambda.functions[lambda_name].code.code_zip.extractall(tmp_dir_name)
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files_in_zip = next(os.walk(tmp_dir_name))[2]
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assert len(files_in_zip) == 1
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assert files_in_zip[0] == "lambda_function.py"
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with open(f"{tmp_dir_name}/{files_in_zip[0]}", "r") as lambda_code_file:
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_ = lambda_code_file
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# assert (
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# lambda_code_file.read()
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# == """
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# def lambda_handler(event, context):
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# print("custom log event")
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# return event
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# """
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# )
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