Generic Patterns: For base pytest patterns (fixtures, mocking, parametrize, markers), see the pytest skill. This skill covers Prowler-specific conventions only.

Full Documentation: docs/developer-guide/unit-testing.mdx

CRITICAL: Provider-Specific Testing

Provider	Mocking Approach	Decorator
AWS	`moto` library	`@mock_aws`
Azure, GCP, K8s, others	`MagicMock`	None

NEVER use moto for non-AWS providers. NEVER use MagicMock for AWS.

AWS Check Test Pattern

from unittest import mock
from boto3 import client
from moto import mock_aws
from tests.providers.aws.utils import AWS_REGION_US_EAST_1, set_mocked_aws_provider


class Test_{check_name}:
    @mock_aws
    def test_no_resources(self):
        from prowler.providers.aws.services.{service}.{service}_service import {ServiceClass}

        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.{service}.{check_name}.{check_name}.{service}_client",
                new={ServiceClass}(aws_provider),
            ):
                from prowler.providers.aws.services.{service}.{check_name}.{check_name} import (
                    {check_name},
                )

                check = {check_name}()
                result = check.execute()

                assert len(result) == 0

    @mock_aws
    def test_{check_name}_pass(self):
        # Setup AWS resources with moto
        {service}_client = client("{service}", region_name=AWS_REGION_US_EAST_1)
        # Create compliant resource...

        from prowler.providers.aws.services.{service}.{service}_service import {ServiceClass}

        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.{service}.{check_name}.{check_name}.{service}_client",
                new={ServiceClass}(aws_provider),
            ):
                from prowler.providers.aws.services.{service}.{check_name}.{check_name} import (
                    {check_name},
                )

                check = {check_name}()
                result = check.execute()

                assert len(result) == 1
                assert result[0].status == "PASS"

    @mock_aws
    def test_{check_name}_fail(self):
        # Setup AWS resources with moto
        {service}_client = client("{service}", region_name=AWS_REGION_US_EAST_1)
        # Create non-compliant resource...

        from prowler.providers.aws.services.{service}.{service}_service import {ServiceClass}

        aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])

        with mock.patch(
            "prowler.providers.common.provider.Provider.get_global_provider",
            return_value=aws_provider,
        ):
            with mock.patch(
                "prowler.providers.aws.services.{service}.{check_name}.{check_name}.{service}_client",
                new={ServiceClass}(aws_provider),
            ):
                from prowler.providers.aws.services.{service}.{check_name}.{check_name} import (
                    {check_name},
                )

                check = {check_name}()
                result = check.execute()

                assert len(result) == 1
                assert result[0].status == "FAIL"

Critical: Always import the check INSIDE the mock.patch context to ensure proper client mocking.

Azure Check Test Pattern

NO moto decorator. Use MagicMock to mock the service client directly.

from unittest import mock
from uuid import uuid4

from prowler.providers.azure.services.{service}.{service}_service import {ResourceModel}
from tests.providers.azure.azure_fixtures import (
    AZURE_SUBSCRIPTION_ID,
    set_mocked_azure_provider,
)


class Test_{check_name}:
    def test_no_resources(self):
        {service}_client = mock.MagicMock
        {service}_client.{resources} = {}

        with (
            mock.patch(
                "prowler.providers.common.provider.Provider.get_global_provider",
                return_value=set_mocked_azure_provider(),
            ),
            mock.patch(
                "prowler.providers.azure.services.{service}.{check_name}.{check_name}.{service}_client",
                new={service}_client,
            ),
        ):
            from prowler.providers.azure.services.{service}.{check_name}.{check_name} import (
                {check_name},
            )

            check = {check_name}()
            result = check.execute()
            assert len(result) == 0

    def test_{check_name}_pass(self):
        resource_id = str(uuid4())
        resource_name = "Test Resource"

        {service}_client = mock.MagicMock
        {service}_client.{resources} = {
            AZURE_SUBSCRIPTION_ID: {
                resource_id: {ResourceModel}(
                    id=resource_id,
                    name=resource_name,
                    location="westeurope",
                    # ... compliant attributes
                )
            }
        }

        with (
            mock.patch(
                "prowler.providers.common.provider.Provider.get_global_provider",
                return_value=set_mocked_azure_provider(),
            ),
            mock.patch(
                "prowler.providers.azure.services.{service}.{check_name}.{check_name}.{service}_client",
                new={service}_client,
            ),
        ):
            from prowler.providers.azure.services.{service}.{check_name}.{check_name} import (
                {check_name},
            )

            check = {check_name}()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "PASS"
            assert result[0].subscription == AZURE_SUBSCRIPTION_ID
            assert result[0].resource_name == resource_name

    def test_{check_name}_fail(self):
        resource_id = str(uuid4())
        resource_name = "Test Resource"

        {service}_client = mock.MagicMock
        {service}_client.{resources} = {
            AZURE_SUBSCRIPTION_ID: {
                resource_id: {ResourceModel}(
                    id=resource_id,
                    name=resource_name,
                    location="westeurope",
                    # ... non-compliant attributes
                )
            }
        }

        with (
            mock.patch(
                "prowler.providers.common.provider.Provider.get_global_provider",
                return_value=set_mocked_azure_provider(),
            ),
            mock.patch(
                "prowler.providers.azure.services.{service}.{check_name}.{check_name}.{service}_client",
                new={service}_client,
            ),
        ):
            from prowler.providers.azure.services.{service}.{check_name}.{check_name} import (
                {check_name},
            )

            check = {check_name}()
            result = check.execute()

            assert len(result) == 1
            assert result[0].status == "FAIL"

GCP/Kubernetes/Other Providers

Follow the same MagicMock pattern as Azure:

from tests.providers.gcp.gcp_fixtures import set_mocked_gcp_provider, GCP_PROJECT_ID
from tests.providers.kubernetes.kubernetes_fixtures import set_mocked_kubernetes_provider

Key difference: Each provider has its own fixtures file with set_mocked_{provider}_provider.

Provider Fixtures Reference

Provider	Fixtures File	Key Constants
AWS	`tests/providers/aws/utils.py`	`AWS_REGION_US_EAST_1`, `AWS_ACCOUNT_NUMBER`
Azure	`tests/providers/azure/azure_fixtures.py`	`AZURE_SUBSCRIPTION_ID`
GCP	`tests/providers/gcp/gcp_fixtures.py`	`GCP_PROJECT_ID`
K8s	`tests/providers/kubernetes/kubernetes_fixtures.py`	-

Test File Structure

tests/providers/{provider}/services/{service}/
├── {service}_service_test.py      # Service tests
└── {check_name}/
    └── {check_name}_test.py       # Check tests

NOTE: Do not create a __init__.py file in the test folder.

Required Test Scenarios

Every check MUST test:

Scenario	Expected
Resource compliant	`status == "PASS"`
Resource non-compliant	`status == "FAIL"`
No resources	`len(results) == 0`

Assertions to Include

# Always verify these
assert result[0].status == "PASS"  # or "FAIL"
assert result[0].status_extended == "Expected message..."
assert result[0].resource_id == expected_id
assert result[0].resource_name == expected_name

# Provider-specific
assert result[0].region == "us-east-1"           # AWS
assert result[0].subscription == AZURE_SUBSCRIPTION_ID  # Azure
assert result[0].project_id == GCP_PROJECT_ID    # GCP

Commands

# All SDK tests
poetry run pytest -n auto -vvv tests/

# Specific provider
poetry run pytest tests/providers/{provider}/ -v

# Specific check
poetry run pytest tests/providers/{provider}/services/{service}/{check_name}/ -v

# Stop on first failure
poetry run pytest -x tests/

Resources

Templates: See assets/ for complete test templates (AWS with moto, Azure/GCP with MagicMock)
Documentation: See references/testing-docs.md for official Prowler Developer Guide links

prowler-test-sdk

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