How to use the moto.mock_ecs function in moto

@mock_ecs
@mock_cloudformation
def test_create_cluster_through_cloudformation_no_name():
    # cloudformation should create a cluster name for you if you do not provide it
    # https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ecs-cluster.html#cfn-ecs-cluster-clustername
    template = {
        "AWSTemplateFormatVersion": "2010-09-09",
        "Description": "ECS Cluster Test CloudFormation",
        "Resources": {"testCluster": {"Type": "AWS::ECS::Cluster"}},
    }
    template_json = json.dumps(template)
    cfn_conn = boto3.client("cloudformation", region_name="us-west-1")
    cfn_conn.create_stack(StackName="test_stack", TemplateBody=template_json)

    ecs_conn = boto3.client("ecs", region_name="us-west-1")
    resp = ecs_conn.list_clusters()
    len(resp["clusterArns"]).should.equal(1)

@mock_ecs
def test_resource_reservation_and_release():
    client = boto3.client("ecs", region_name="us-east-1")
    ec2 = boto3.resource("ec2", region_name="us-east-1")

    test_cluster_name = "test_ecs_cluster"

    _ = client.create_cluster(clusterName=test_cluster_name)

    test_instance = ec2.create_instances(
        ImageId="ami-1234abcd", MinCount=1, MaxCount=1
    )[0]

    instance_id_document = json.dumps(
        ec2_utils.generate_instance_identity_document(test_instance)
    )

@mock_ecs
@mock_cloudformation
def test_update_cluster_name_through_cloudformation_should_trigger_a_replacement():
    template1 = {
        "AWSTemplateFormatVersion": "2010-09-09",
        "Description": "ECS Cluster Test CloudFormation",
        "Resources": {
            "testCluster": {
                "Type": "AWS::ECS::Cluster",
                "Properties": {"ClusterName": "testcluster1"},
            }
        },
    }
    template2 = deepcopy(template1)
    template2["Resources"]["testCluster"]["Properties"]["ClusterName"] = "testcluster2"
    template1_json = json.dumps(template1)
    cfn_conn = boto3.client("cloudformation", region_name="us-west-1")

    @mock_ecs
    def setUp(self):
        with mock.patch.object(CLI, '__init__') as mock_init:
            mock_init.return_value = None
            self.mock_cli = CLI()

        self.client = boto3.client('ecs', region_name='us-east-1')

        mock_cluster = self.client.create_cluster(clusterName='mock_cluster')

        mock_task = self.client.register_task_definition(
            family='mock_task',
            taskRoleArn='arn:aws:ecs:us-east-1:999999999999:task-definition/mock_task:99',
            networkMode='none',
            containerDefinitions=[
                {
                    'name': 'string',

@mock_ecs
def test_list_tags_for_resource_unknown_service():
    client = boto3.client("ecs", region_name="us-east-1")
    service_arn = "arn:aws:ecs:us-east-1:012345678910:service/unknown:1"
    try:
        client.list_tags_for_resource(resourceArn=service_arn)
    except ClientError as err:
        err.response["Error"]["Code"].should.equal("ServiceNotFoundException")

@mock_ecs
@mock_iam
@mock_batch
def test_create_job_queue_cf():
    ec2_client, iam_client, ecs_client, logs_client, batch_client = _get_clients()
    vpc_id, subnet_id, sg_id, iam_arn = _setup(ec2_client, iam_client)

    create_environment_template = {
        "Resources": {
            "ComputeEnvironment": {
                "Type": "AWS::Batch::ComputeEnvironment",
                "Properties": {
                    "Type": "MANAGED",
                    "ComputeResources": {
                        "Type": "EC2",
                        "MinvCpus": 0,
                        "DesiredvCpus": 0,

@mock_ecs
@mock_iam
@mock_batch
def test_list_jobs():
    ec2_client, iam_client, ecs_client, logs_client, batch_client = _get_clients()
    vpc_id, subnet_id, sg_id, iam_arn = _setup(ec2_client, iam_client)

    compute_name = "test_compute_env"
    resp = batch_client.create_compute_environment(
        computeEnvironmentName=compute_name,
        type="UNMANAGED",
        state="ENABLED",
        serviceRole=iam_arn,
    )
    arn = resp["computeEnvironmentArn"]

    resp = batch_client.create_job_queue(

@mock_ecs
def test_update_service():
    client = boto3.client("ecs", region_name="us-east-1")
    _ = client.create_cluster(clusterName="test_ecs_cluster")
    _ = client.register_task_definition(
        family="test_ecs_task",
        containerDefinitions=[
            {
                "name": "hello_world",
                "image": "docker/hello-world:latest",
                "cpu": 1024,
                "memory": 400,
                "essential": True,
                "environment": [
                    {"name": "AWS_ACCESS_KEY_ID", "value": "SOME_ACCESS_KEY"}
                ],
                "logConfiguration": {"logDriver": "json-file"},

@mock_ecs
@mock_iam
@mock_batch
def test_create_job_queue():
    ec2_client, iam_client, ecs_client, logs_client, batch_client = _get_clients()
    vpc_id, subnet_id, sg_id, iam_arn = _setup(ec2_client, iam_client)

    compute_name = "test_compute_env"
    resp = batch_client.create_compute_environment(
        computeEnvironmentName=compute_name,
        type="UNMANAGED",
        state="ENABLED",
        serviceRole=iam_arn,
    )
    arn = resp["computeEnvironmentArn"]

    resp = batch_client.create_job_queue(

@mock_ecs
def test_resource_reservation_and_release_memory_reservation():
    client = boto3.client("ecs", region_name="us-east-1")
    ec2 = boto3.resource("ec2", region_name="us-east-1")

    test_cluster_name = "test_ecs_cluster"

    _ = client.create_cluster(clusterName=test_cluster_name)

    test_instance = ec2.create_instances(
        ImageId="ami-1234abcd", MinCount=1, MaxCount=1
    )[0]

    instance_id_document = json.dumps(
        ec2_utils.generate_instance_identity_document(test_instance)
    )