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from uuid import uuid4
import boto3
import pytest
from botocore.exceptions import ClientError
from tests import aws_verified
conditional_output_conditional_value = """
Outputs:
roleArn:
Condition: RoleCondition
Value: !GetAtt role.Arn
Parameters:
roleName:
Type: String
Description: Predefined role name
Conditions:
RoleCondition: !Equals [ !Ref roleName, "myrole" ]
Resources:
role:
Condition: RoleCondition
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
Service:
- ec2.amazonaws.com
Action:
- 'sts:AssumeRole'
"""
@pytest.mark.aws_verified
@aws_verified
def test_conditional_output_conditional_value():
cf = boto3.client("cloudformation", region_name="us-east-1")
param = [{"ParameterKey": "roleName", "ParameterValue": "myrole"}]
name = f"stack{str(uuid4())[0:6]}"
cf.create_stack(
StackName=name,
TemplateBody=conditional_output_conditional_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
waiter = cf.get_waiter("stack_create_complete")
waiter.wait(StackName=name)
stack = cf.describe_stacks(StackName=name)["Stacks"][0]
assert stack["Outputs"][0]["OutputKey"] == "roleArn"
cf.delete_stack(StackName=name)
# verify role does not exist with different name
param = [{"ParameterKey": "roleName", "ParameterValue": "diffname"}]
cf.create_stack(
StackName=f"{name}2",
TemplateBody=conditional_output_conditional_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
waiter = cf.get_waiter("stack_create_complete")
waiter.wait(StackName=f"{name}2")
stack = cf.describe_stacks()["Stacks"][0]
assert "Outputs" not in stack
cf.delete_stack(StackName=f"{name}2")
permanent_output_conditional_value = """
Outputs:
roleArn:
Value: !GetAtt role.Arn
Parameters:
roleName:
Type: String
Description: Predefined role name
Conditions:
RoleCondition: !Equals [ !Ref roleName, "myrole" ]
Resources:
role:
Condition: RoleCondition
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
Service:
- ec2.amazonaws.com
Action:
- 'sts:AssumeRole'
"""
@pytest.mark.aws_verified
@aws_verified
def test_permanent_output_conditional_value():
cf = boto3.client("cloudformation", region_name="us-east-1")
param = [{"ParameterKey": "roleName", "ParameterValue": "myrole"}]
name = f"stack{str(uuid4())[0:6]}"
cf.create_stack(
StackName=name,
TemplateBody=permanent_output_conditional_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
waiter = cf.get_waiter("stack_create_complete")
waiter.wait(StackName=name)
# Works - because role exists
stack = cf.describe_stacks(StackName=name)["Stacks"][0]
assert stack["Outputs"][0]["OutputKey"] == "roleArn"
cf.delete_stack(StackName=name)
# Role does not exist with different name
# So we can't get the Output either
param = [{"ParameterKey": "roleName", "ParameterValue": "diffname"}]
with pytest.raises(ClientError) as exc:
cf.create_stack(
StackName=f"{name}2",
TemplateBody=permanent_output_conditional_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
err = exc.value.response["Error"]
assert err["Code"] == "ValidationError"
assert (
err["Message"]
== "Unresolved resource dependencies [role] in the Outputs block of the template"
)
conditional_output_of_permanent_value = """
Outputs:
roleArn:
Condition: RoleCondition
Value: !GetAtt role.Arn
Parameters:
roleName:
Type: String
Description: Predefined role name
Conditions:
RoleCondition: !Equals [ !Ref roleName, "myrole" ]
Resources:
role:
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Principal:
Service:
- ec2.amazonaws.com
Action:
- 'sts:AssumeRole'
"""
@pytest.mark.aws_verified
@aws_verified
def test_conditional_output_of_permanent_value():
cf = boto3.client("cloudformation", region_name="us-east-1")
param = [{"ParameterKey": "roleName", "ParameterValue": "myrole"}]
name = f"stack{str(uuid4())[0:6]}"
cf.create_stack(
StackName=name,
TemplateBody=conditional_output_of_permanent_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
waiter = cf.get_waiter("stack_create_complete")
waiter.wait(StackName=name)
stack = cf.describe_stacks(StackName=name)["Stacks"][0]
assert stack["Outputs"][0]["OutputKey"] == "roleArn"
cf.delete_stack(StackName=name)
# verify role does not exist with different name
param = [{"ParameterKey": "roleName", "ParameterValue": "diffname"}]
cf.create_stack(
StackName=f"{name}2",
TemplateBody=conditional_output_of_permanent_value,
Parameters=param,
Capabilities=["CAPABILITY_IAM"],
)
waiter = cf.get_waiter("stack_create_complete")
waiter.wait(StackName=f"{name}2")
stack = cf.describe_stacks(StackName=f"{name}2")["Stacks"][0]
# The Role does exist
# But Output is conditional, and just doesn't return anything
assert "Outputs" not in stack
cf.delete_stack(StackName=f"{name}2")
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