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How to use is_old_provider method in localstack

Best Python code snippet using localstack_python

test_lambda.py

Source:test_lambda.py

...138    ]139    if use_docker()140    else [LAMBDA_RUNTIME_JAVA11]141)142def is_old_provider():143    return (144        os.environ.get("TEST_TARGET") != "AWS_CLOUD"145        and os.environ.get("PROVIDER_OVERRIDE_LAMBDA") != "asf"146    )147PROVIDED_TEST_RUNTIMES = [148    LAMBDA_RUNTIME_PROVIDED,149    # TODO remove skip once we use correct images150    pytest.param(151        LAMBDA_RUNTIME_PROVIDED_AL2,152        marks=pytest.mark.skipif(153            is_old_provider(), reason="curl missing in provided.al2 lambci image"154        ),155    ),156]157# Snapshot patterns158IGNORE_LOGSTREAM_ID: Pattern[str] = re.compile(159    r"\d{4}/\d{2}/\d{2}/\[((\$LATEST)|\d+)\][0-9a-f]{32}"160)161T = TypeVar("T")162def read_streams(payload: T) -> T:163    new_payload = {}164    for k, v in payload.items():165        if isinstance(v, Dict):166            new_payload[k] = read_streams(v)167        elif isinstance(v, StreamingBody):168            new_payload[k] = to_str(v.read())169        else:170            new_payload[k] = v171    return new_payload172@pytest.fixture173def check_lambda_logs(logs_client):174    def _check_logs(func_name: str, expected_lines: List[str] = None):175        if not expected_lines:176            expected_lines = []177        log_events = get_lambda_logs(func_name, logs_client=logs_client)178        log_messages = [e["message"] for e in log_events]179        for line in expected_lines:180            if ".*" in line:181                found = [re.match(line, m, flags=re.DOTALL) for m in log_messages]182                if any(found):183                    continue184            assert line in log_messages185    return _check_logs186def configure_snapshot_for_context(snapshot, function_name: str):187    """188    Utility function to configure snapshot to ignore a function name and log stream ids in its body.189    Helpful if invoke calls return the context object, in which they are present190    :param snapshot: Snapshot fixture result191    :param function_name: Function name of the current function192    """193    snapshot.register_replacement(IGNORE_LOGSTREAM_ID, "<log_stream_id>")194    snapshot.register_replacement(re.compile(function_name), "<function_name>")195# API only functions (no lambda execution itself)196class TestLambdaAPI:197    @pytest.mark.only_localstack198    def test_create_lambda_function(self, lambda_client):199        """Basic test that creates and deletes a Lambda function"""200        func_name = f"lambda_func-{short_uid()}"201        kms_key_arn = f"arn:{aws_stack.get_partition()}:kms:{aws_stack.get_region()}:{TEST_AWS_ACCOUNT_ID}:key11"202        vpc_config = {203            "SubnetIds": ["subnet-123456789"],204            "SecurityGroupIds": ["sg-123456789"],205        }206        tags = {"env": "testing"}207        kwargs = {208            "FunctionName": func_name,209            "Runtime": LAMBDA_RUNTIME_PYTHON37,210            "Handler": LAMBDA_DEFAULT_HANDLER,211            "Role": LAMBDA_TEST_ROLE,212            "KMSKeyArn": kms_key_arn,213            "Code": {214                "ZipFile": create_lambda_archive(215                    load_file(TEST_LAMBDA_PYTHON_ECHO), get_content=True216                )217            },218            "Timeout": 3,219            "VpcConfig": vpc_config,220            "Tags": tags,221            "Environment": {"Variables": {"foo": "bar"}},222        }223        result = lambda_client.create_function(**kwargs)224        function_arn = result["FunctionArn"]225        assert testutil.response_arn_matches_partition(lambda_client, function_arn)226        partial_function_arn = ":".join(function_arn.split(":")[3:])227        # Get function by Name, ARN and partial ARN228        for func_ref in [func_name, function_arn, partial_function_arn]:229            rs = lambda_client.get_function(FunctionName=func_ref)230            assert rs["Configuration"].get("KMSKeyArn", "") == kms_key_arn231            assert rs["Configuration"].get("VpcConfig", {}) == vpc_config232            assert rs["Tags"] == tags233        # clean up234        lambda_client.delete_function(FunctionName=func_name)235        with pytest.raises(Exception) as exc:236            lambda_client.delete_function(FunctionName=func_name)237        assert "ResourceNotFoundException" in str(exc)238    @pytest.mark.snapshot239    def test_add_lambda_permission_aws(240        self, lambda_client, iam_client, create_lambda_function, snapshot241    ):242        """Testing the add_permission call on lambda, by adding a new resource-based policy to a lambda function"""243        function_name = f"lambda_func-{short_uid()}"244        lambda_create_response = create_lambda_function(245            handler_file=TEST_LAMBDA_PYTHON_ECHO,246            func_name=function_name,247            runtime=LAMBDA_RUNTIME_PYTHON36,248        )249        lambda_arn = lambda_create_response["CreateFunctionResponse"]["FunctionArn"]250        snapshot.match("create_lambda", lambda_create_response)251        # create lambda permission252        action = "lambda:InvokeFunction"253        sid = "s3"254        principal = "s3.amazonaws.com"255        resp = lambda_client.add_permission(256            FunctionName=function_name,257            Action=action,258            StatementId=sid,259            Principal=principal,260            SourceArn=aws_stack.s3_bucket_arn("test-bucket"),261        )262        snapshot.match("add_permission", resp)263        # fetch lambda policy264        get_policy_result = lambda_client.get_policy(FunctionName=function_name)265        snapshot.match("get_policy", get_policy_result)266        assert lambda_arn == json.loads(get_policy_result["Policy"])["Statement"][0]["Resource"]267    # TODO permissions cannot be added to $LATEST268    @pytest.mark.skipif(269        not is_old_provider(), reason="test does not make valid assertions against AWS"270    )271    def test_add_lambda_permission(self, lambda_client, iam_client, create_lambda_function):272        function_name = f"lambda_func-{short_uid()}"273        lambda_create_response = create_lambda_function(274            handler_file=TEST_LAMBDA_PYTHON_ECHO,275            func_name=function_name,276            runtime=LAMBDA_RUNTIME_PYTHON36,277        )278        lambda_arn = lambda_create_response["CreateFunctionResponse"]["FunctionArn"]279        # create lambda permission280        action = "lambda:InvokeFunction"281        sid = "s3"282        principal = "s3.amazonaws.com"283        resp = lambda_client.add_permission(284            FunctionName=function_name,285            Action=action,286            StatementId=sid,287            Principal=principal,288            SourceArn=aws_stack.s3_bucket_arn("test-bucket"),289        )290        # fetch lambda policy291        policy = lambda_client.get_policy(FunctionName=function_name)["Policy"]292        assert isinstance(policy, str)293        policy = json.loads(to_str(policy))294        assert action == policy["Statement"][0]["Action"]295        assert sid == policy["Statement"][0]["Sid"]296        assert lambda_arn == policy["Statement"][0]["Resource"]297        assert principal == policy["Statement"][0]["Principal"]["Service"]298        assert (299            aws_stack.s3_bucket_arn("test-bucket")300            == policy["Statement"][0]["Condition"]["ArnLike"]["AWS:SourceArn"]301        )302        # fetch IAM policy303        # this is not a valid assertion in general (especially against AWS)304        policies = iam_client.list_policies(Scope="Local", MaxItems=500)["Policies"]305        policy_name = get_lambda_policy_name(function_name)306        matching = [p for p in policies if p["PolicyName"] == policy_name]307        assert len(matching) == 1308        assert ":policy/" in matching[0]["Arn"]309        # remove permission that we just added310        resp = lambda_client.remove_permission(311            FunctionName=function_name,312            StatementId=sid,313            Qualifier="qual1",314            RevisionId="r1",315        )316        assert 200 == resp["ResponseMetadata"]["HTTPStatusCode"]317    def test_remove_multi_permissions(self, lambda_client, create_lambda_function, snapshot):318        """Tests creation and subsequent removal of multiple permissions, including the changes in the policy"""319        function_name = f"lambda_func-{short_uid()}"320        create_lambda_function(321            handler_file=TEST_LAMBDA_PYTHON_ECHO,322            func_name=function_name,323            runtime=LAMBDA_RUNTIME_PYTHON36,324        )325        action = "lambda:InvokeFunction"326        sid = "s3"327        principal = "s3.amazonaws.com"328        permission_1_add = lambda_client.add_permission(329            FunctionName=function_name,330            Action=action,331            StatementId=sid,332            Principal=principal,333        )334        snapshot.match("add_permission_1", permission_1_add)335        sid_2 = "sqs"336        principal_2 = "sqs.amazonaws.com"337        permission_2_add = lambda_client.add_permission(338            FunctionName=function_name,339            Action=action,340            StatementId=sid_2,341            Principal=principal_2,342            SourceArn=aws_stack.s3_bucket_arn("test-bucket"),343        )344        snapshot.match("add_permission_2", permission_2_add)345        policy_response = lambda_client.get_policy(346            FunctionName=function_name,347        )348        snapshot.match("policy_after_2_add", policy_response)349        with pytest.raises(ClientError) as e:350            lambda_client.remove_permission(351                FunctionName=function_name,352                StatementId="non-existent",353            )354        assert e.value.response["Error"]["Code"] == "ResourceNotFoundException"355        lambda_client.remove_permission(356            FunctionName=function_name,357            StatementId=sid_2,358        )359        policy = json.loads(360            lambda_client.get_policy(361                FunctionName=function_name,362            )["Policy"]363        )364        snapshot.match("policy_after_removal", policy)365        assert policy["Statement"][0]["Sid"] == sid366        lambda_client.remove_permission(367            FunctionName=function_name,368            StatementId=sid,369        )370        with pytest.raises(ClientError) as ctx:371            lambda_client.get_policy(FunctionName=function_name)372        assert ctx.value.response["Error"]["Code"] == "ResourceNotFoundException"373    @pytest.mark.skipif(374        not is_old_provider(), reason="test does not make valid assertions against AWS"375    )376    def test_add_lambda_multiple_permission(377        self, iam_client, lambda_client, create_lambda_function378    ):379        """Test adding multiple permissions"""380        function_name = f"lambda_func-{short_uid()}"381        create_lambda_function(382            handler_file=TEST_LAMBDA_PYTHON_ECHO,383            func_name=function_name,384            runtime=LAMBDA_RUNTIME_PYTHON36,385        )386        # create lambda permissions387        action = "lambda:InvokeFunction"388        principal = "s3.amazonaws.com"389        statement_ids = ["s4", "s5"]390        for sid in statement_ids:391            resp = lambda_client.add_permission(392                FunctionName=function_name,393                Action=action,394                StatementId=sid,395                Principal=principal,396                SourceArn=aws_stack.s3_bucket_arn("test-bucket"),397            )398            assert "Statement" in resp399        # fetch IAM policy400        # this is not a valid assertion in general (especially against AWS)401        policies = iam_client.list_policies(Scope="Local", MaxItems=500)["Policies"]402        policy_name = get_lambda_policy_name(function_name)403        matching = [p for p in policies if p["PolicyName"] == policy_name]404        assert 1 == len(matching)405        assert ":policy/" in matching[0]["Arn"]406        # validate both statements407        policy = matching[0]408        versions = iam_client.list_policy_versions(PolicyArn=policy["Arn"])["Versions"]409        assert 1 == len(versions)410        statements = versions[0]["Document"]["Statement"]411        for i in range(len(statement_ids)):412            assert action == statements[i]["Action"]413            assert lambda_api.func_arn(function_name) == statements[i]["Resource"]414            assert principal == statements[i]["Principal"]["Service"]415            assert (416                aws_stack.s3_bucket_arn("test-bucket")417                == statements[i]["Condition"]["ArnLike"]["AWS:SourceArn"]418            )419            # check statement_ids in reverse order420            assert statement_ids[abs(i - 1)] == statements[i]["Sid"]421        # remove permission that we just added422        resp = lambda_client.remove_permission(423            FunctionName=function_name,424            StatementId=sid,425            Qualifier="qual1",426            RevisionId="r1",427        )428        assert 200 == resp["ResponseMetadata"]["HTTPStatusCode"]429    @pytest.mark.snapshot430    def test_lambda_asynchronous_invocations(431        self,432        lambda_client,433        create_lambda_function,434        sqs_queue,435        sqs_queue_arn,436        lambda_su_role,437        snapshot,438    ):439        """Testing API actions of function event config"""440        function_name = f"lambda_func-{short_uid()}"441        create_lambda_function(442            handler_file=TEST_LAMBDA_PYTHON_ECHO,443            func_name=function_name,444            runtime=LAMBDA_RUNTIME_PYTHON36,445            role=lambda_su_role,446        )447        queue_arn = sqs_queue_arn(sqs_queue)448        destination_config = {449            "OnSuccess": {"Destination": queue_arn},450            "OnFailure": {"Destination": queue_arn},451        }452        # adding event invoke config453        response = lambda_client.put_function_event_invoke_config(454            FunctionName=function_name,455            MaximumRetryAttempts=2,456            MaximumEventAgeInSeconds=123,457            DestinationConfig=destination_config,458        )459        snapshot.match("put_function_event_invoke_config", response)460        # over writing event invoke config461        response = lambda_client.put_function_event_invoke_config(462            FunctionName=function_name,463            MaximumRetryAttempts=2,464            DestinationConfig=destination_config,465        )466        snapshot.match("put_function_event_invoke_config_overwritemaxeventage", response)467        # updating event invoke config468        response = lambda_client.update_function_event_invoke_config(469            FunctionName=function_name,470            MaximumRetryAttempts=1,471        )472        snapshot.match("put_function_event_invoke_config_maxattempt1", response)473        # clean up474        lambda_client.delete_function_event_invoke_config(FunctionName=function_name)475    def test_function_concurrency(self, lambda_client, create_lambda_function, snapshot):476        """Testing the api of the put function concurrency action"""477        function_name = f"lambda_func-{short_uid()}"478        create_lambda_function(479            handler_file=TEST_LAMBDA_PYTHON_ECHO,480            func_name=function_name,481            runtime=LAMBDA_RUNTIME_PYTHON36,482        )483        response = lambda_client.put_function_concurrency(484            FunctionName=function_name, ReservedConcurrentExecutions=123485        )486        snapshot.match("put_function_concurrency", response)487        assert "ReservedConcurrentExecutions" in response488        response = lambda_client.get_function_concurrency(FunctionName=function_name)489        snapshot.match("get_function_concurrency", response)490        assert "ReservedConcurrentExecutions" in response491        lambda_client.delete_function_concurrency(FunctionName=function_name)492    def test_function_code_signing_config(self, lambda_client, create_lambda_function, snapshot):493        """Testing the API of code signing config"""494        function_name = f"lambda_func-{short_uid()}"495        create_lambda_function(496            handler_file=TEST_LAMBDA_PYTHON_ECHO,497            func_name=function_name,498            runtime=LAMBDA_RUNTIME_PYTHON36,499        )500        response = lambda_client.create_code_signing_config(501            Description="Testing CodeSigning Config",502            AllowedPublishers={503                "SigningProfileVersionArns": [504                    f"arn:aws:signer:{aws_stack.get_region()}:000000000000:/signing-profiles/test",505                ]506            },507            CodeSigningPolicies={"UntrustedArtifactOnDeployment": "Enforce"},508        )509        snapshot.replace_value(re.compile(r"^csc-[0-9a-f]{17}$"), "<csc-id>")510        snapshot.match("create_code_signing_config", response)511        assert "Description" in response["CodeSigningConfig"]512        assert "SigningProfileVersionArns" in response["CodeSigningConfig"]["AllowedPublishers"]513        assert (514            "UntrustedArtifactOnDeployment" in response["CodeSigningConfig"]["CodeSigningPolicies"]515        )516        code_signing_arn = response["CodeSigningConfig"]["CodeSigningConfigArn"]517        response = lambda_client.update_code_signing_config(518            CodeSigningConfigArn=code_signing_arn,519            CodeSigningPolicies={"UntrustedArtifactOnDeployment": "Warn"},520        )521        snapshot.match("update_code_signing_config", response)522        assert (523            "Warn"524            == response["CodeSigningConfig"]["CodeSigningPolicies"]["UntrustedArtifactOnDeployment"]525        )526        response = lambda_client.get_code_signing_config(CodeSigningConfigArn=code_signing_arn)527        assert 200 == response["ResponseMetadata"]["HTTPStatusCode"]528        snapshot.match("get_code_signing_config", response)529        response = lambda_client.put_function_code_signing_config(530            CodeSigningConfigArn=code_signing_arn, FunctionName=function_name531        )532        assert 200 == response["ResponseMetadata"]["HTTPStatusCode"]533        snapshot.match("put_function_code_signing_config", response)534        response = lambda_client.get_function_code_signing_config(FunctionName=function_name)535        assert 200 == response["ResponseMetadata"]["HTTPStatusCode"]536        snapshot.match("get_function_code_signing_config", response)537        assert code_signing_arn == response["CodeSigningConfigArn"]538        assert function_name == response["FunctionName"]539        response = lambda_client.delete_function_code_signing_config(FunctionName=function_name)540        assert 204 == response["ResponseMetadata"]["HTTPStatusCode"]541        response = lambda_client.delete_code_signing_config(CodeSigningConfigArn=code_signing_arn)542        assert 204 == response["ResponseMetadata"]["HTTPStatusCode"]543    def create_multiple_lambda_permissions(self, lambda_client, create_lambda_function, snapshot):544        """Test creating multiple lambda permissions and checking the policy"""545        function_name = f"test-function-{short_uid()}"546        create_lambda_function(547            funct_name=function_name,548            runtime=LAMBDA_RUNTIME_PYTHON37,549            libs=TEST_LAMBDA_LIBS,550        )551        action = "lambda:InvokeFunction"552        sid = "logs"553        resp = lambda_client.add_permission(554            FunctionName=function_name,555            Action=action,556            StatementId=sid,557            Principal="logs.amazonaws.com",558        )559        snapshot.match("add_permission_response_1", resp)560        assert "Statement" in resp561        sid = "kinesis"562        resp = lambda_client.add_permission(563            FunctionName=function_name,564            Action=action,565            StatementId=sid,566            Principal="kinesis.amazonaws.com",567        )568        snapshot.match("add_permission_response_2", resp)569        assert "Statement" in resp570        policy_response = lambda_client.get_policy(571            FunctionName=function_name,572        )573        snapshot.match("policy_after_2_add", policy_response)574class TestLambdaBaseFeatures:575    def test_dead_letter_queue(576        self,577        lambda_client,578        create_lambda_function,579        sqs_client,580        sqs_create_queue,581        sqs_queue_arn,582        lambda_su_role,583        snapshot,584    ):585        """Creates a lambda with a defined dead letter queue, and check failed lambda invocation leads to a message"""586        # create DLQ and Lambda function587        queue_name = f"test-{short_uid()}"588        lambda_name = f"test-{short_uid()}"589        queue_url = sqs_create_queue(QueueName=queue_name)590        queue_arn = sqs_queue_arn(queue_url)591        create_lambda_response = create_lambda_function(592            handler_file=TEST_LAMBDA_PYTHON,593            func_name=lambda_name,594            libs=TEST_LAMBDA_LIBS,595            runtime=LAMBDA_RUNTIME_PYTHON36,596            DeadLetterConfig={"TargetArn": queue_arn},597            role=lambda_su_role,598        )599        snapshot.match("create_lambda_with_dlq", create_lambda_response)600        snapshot.skip_key(re.compile("ReceiptHandle"), "<receipt-handle>")601        snapshot.skip_key(re.compile("MD5Of.*"), "<md5-hash>")602        # invoke Lambda, triggering an error603        payload = {lambda_integration.MSG_BODY_RAISE_ERROR_FLAG: 1}604        lambda_client.invoke(605            FunctionName=lambda_name,606            Payload=json.dumps(payload),607            InvocationType="Event",608        )609        # assert that message has been received on the DLQ610        def receive_dlq():611            result = sqs_client.receive_message(QueueUrl=queue_url, MessageAttributeNames=["All"])612            assert len(result["Messages"]) > 0613            msg_attrs = result["Messages"][0]["MessageAttributes"]614            assert "RequestID" in msg_attrs615            assert "ErrorCode" in msg_attrs616            assert "ErrorMessage" in msg_attrs617            snapshot.match("sqs_dlq_message", result)618        # on AWS, event retries can be quite delayed, so we have to wait up to 6 minutes here, potential flakes619        retry(receive_dlq, retries=120, sleep=3)620        # update DLQ config621        update_function_config_response = lambda_client.update_function_configuration(622            FunctionName=lambda_name, DeadLetterConfig={}623        )624        snapshot.match("delete_dlq", update_function_config_response)625        # invoke Lambda again, assert that status code is 200 and error details contained in the payload626        result = lambda_client.invoke(627            FunctionName=lambda_name, Payload=json.dumps(payload), LogType="Tail"628        )629        result = read_streams(result)630        payload = json.loads(to_str(result["Payload"]))631        snapshot.match("result_payload", payload)632        assert 200 == result["StatusCode"]633        assert "Unhandled" == result["FunctionError"]634        assert "$LATEST" == result["ExecutedVersion"]635        assert "Test exception" in payload["errorMessage"]636        assert "Exception" in payload["errorType"]637        assert isinstance(payload["stackTrace"], list)638        log_result = result.get("LogResult")639        assert log_result640        logs = to_str(base64.b64decode(to_str(log_result)))641        assert "START" in logs642        assert "Test exception" in logs643        assert "END" in logs644        assert "REPORT" in logs645    @pytest.mark.parametrize(646        "condition,payload",647        [648            ("Success", {}),649            ("RetriesExhausted", {lambda_integration.MSG_BODY_RAISE_ERROR_FLAG: 1}),650        ],651    )652    def test_assess_lambda_destination_invocation(653        self,654        condition,655        payload,656        lambda_client,657        sqs_client,658        create_lambda_function,659        sqs_create_queue,660        sqs_queue_arn,661        lambda_su_role,662        snapshot,663    ):664        """Testing the destination config API and operation (for the OnSuccess case)"""665        # create DLQ and Lambda function666        queue_name = f"test-{short_uid()}"667        lambda_name = f"test-{short_uid()}"668        queue_url = sqs_create_queue(QueueName=queue_name)669        queue_arn = sqs_queue_arn(queue_url)670        create_lambda_function(671            handler_file=TEST_LAMBDA_PYTHON,672            func_name=lambda_name,673            libs=TEST_LAMBDA_LIBS,674            role=lambda_su_role,675        )676        put_event_invoke_config_response = lambda_client.put_function_event_invoke_config(677            FunctionName=lambda_name,678            DestinationConfig={679                "OnSuccess": {"Destination": queue_arn},680                "OnFailure": {"Destination": queue_arn},681            },682        )683        snapshot.match("put_function_event_invoke_config", put_event_invoke_config_response)684        snapshot.skip_key(re.compile("ReceiptHandle"), "<receipt-handle>")685        snapshot.skip_key(re.compile("MD5Of.*"), "<md5-hash>")686        lambda_client.invoke(687            FunctionName=lambda_name,688            Payload=json.dumps(payload),689            InvocationType="Event",690        )691        configure_snapshot_for_context(snapshot, lambda_name)692        def receive_message():693            rs = sqs_client.receive_message(QueueUrl=queue_url, MessageAttributeNames=["All"])694            assert len(rs["Messages"]) > 0695            msg = rs["Messages"][0]["Body"]696            msg = json.loads(msg)697            assert condition == msg["requestContext"]["condition"]698            snapshot.match("destination_message", rs)699        retry(receive_message, retries=120, sleep=3)700    def test_large_payloads(self, caplog, lambda_client, create_lambda_function, snapshot):701        """Testing large payloads sent to lambda functions (~5MB)"""702        # Set the loglevel to INFO for this test to avoid breaking a CI environment (due to excessive log outputs)703        caplog.set_level(logging.INFO)704        function_name = f"large_payload-{short_uid()}"705        create_lambda_function(706            handler_file=TEST_LAMBDA_PYTHON_ECHO,707            func_name=function_name,708            runtime=LAMBDA_RUNTIME_PYTHON36,709        )710        payload = {"test": "test123456" * 100 * 1000 * 5}  # 5MB payload711        payload_bytes = to_bytes(json.dumps(payload))712        result = lambda_client.invoke(FunctionName=function_name, Payload=payload_bytes)713        result = read_streams(result)714        snapshot.match("invocation_response", result)715        assert 200 == result["ResponseMetadata"]["HTTPStatusCode"]716        result_data = result["Payload"]717        result_data = json.loads(to_str(result_data))718        assert payload == result_data719parametrize_python_runtimes = pytest.mark.parametrize(720    "runtime",721    PYTHON_TEST_RUNTIMES,722)723class TestPythonRuntimes:724    @pytest.fixture(725        params=PYTHON_TEST_RUNTIMES,726    )727    def python_function_name(self, request, lambda_client, create_lambda_function):728        function_name = f"python-test-function-{short_uid()}"729        create_lambda_function(730            func_name=function_name,731            handler_file=TEST_LAMBDA_PYTHON,732            libs=TEST_LAMBDA_LIBS,733            runtime=request.param,734        )735        return function_name736    def test_invocation_type_not_set(self, lambda_client, python_function_name, snapshot):737        """Test invocation of a lambda with no invocation type set, but LogType="Tail""" ""738        result = lambda_client.invoke(739            FunctionName=python_function_name, Payload=b"{}", LogType="Tail"740        )741        result = read_streams(result)742        snapshot.skip_key(re.compile("LogResult"), "<log_result>")743        configure_snapshot_for_context(snapshot, python_function_name)744        snapshot.match("invoke", result)745        result_data = json.loads(result["Payload"])746        # assert response details747        assert 200 == result["StatusCode"]748        assert {} == result_data["event"]749        # assert that logs are contained in response750        logs = result.get("LogResult", "")751        logs = to_str(base64.b64decode(to_str(logs)))752        snapshot.register_replacement(753            re.compile(r"Duration: \d+(\.\d{2})? ms"), "Duration: <duration> ms"754        )755        snapshot.register_replacement(re.compile(r"Used: \d+ MB"), "Used: <memory> MB")756        snapshot.match("logs", {"logs": logs})757        assert "START" in logs758        assert "Lambda log message" in logs759        assert "END" in logs760        assert "REPORT" in logs761    def test_invocation_type_request_response(self, lambda_client, python_function_name, snapshot):762        """Test invocation with InvocationType RequestResponse explicitely set"""763        result = lambda_client.invoke(764            FunctionName=python_function_name,765            Payload=b"{}",766            InvocationType="RequestResponse",767        )768        result = read_streams(result)769        configure_snapshot_for_context(snapshot, python_function_name)770        snapshot.match("invoke-result", result)771        result_data = result["Payload"]772        result_data = json.loads(result_data)773        assert "application/json" == result["ResponseMetadata"]["HTTPHeaders"]["content-type"]774        assert 200 == result["StatusCode"]775        assert isinstance(result_data, dict)776    def test_invocation_type_event(self, lambda_client, python_function_name, snapshot):777        """Check invocation response for type event"""778        result = lambda_client.invoke(779            FunctionName=python_function_name, Payload=b"{}", InvocationType="Event"780        )781        result = read_streams(result)782        snapshot.match("invoke-result", result)783        assert 202 == result["StatusCode"]784    def test_invocation_type_dry_run(self, lambda_client, python_function_name, snapshot):785        """Check invocation response for type dryrun"""786        result = lambda_client.invoke(787            FunctionName=python_function_name, Payload=b"{}", InvocationType="DryRun"788        )789        result = read_streams(result)790        snapshot.match("invoke-result", result)791        assert 204 == result["StatusCode"]792    @parametrize_python_runtimes793    def test_lambda_environment(self, lambda_client, create_lambda_function, runtime, snapshot):794        """Tests invoking a lambda function with environment variables set on creation"""795        function_name = f"env-test-function-{short_uid()}"796        env_vars = {"Hello": "World"}797        creation_result = create_lambda_function(798            handler_file=TEST_LAMBDA_ENV,799            libs=TEST_LAMBDA_LIBS,800            func_name=function_name,801            envvars=env_vars,802            runtime=runtime,803        )804        snapshot.match("creation-result", creation_result)805        # invoke function and assert result contains env vars806        result = lambda_client.invoke(FunctionName=function_name, Payload=b"{}")807        result = read_streams(result)808        snapshot.match("invocation-result", result)809        result_data = result["Payload"]810        assert 200 == result["StatusCode"]811        assert json.loads(result_data) == env_vars812        # get function config and assert result contains env vars813        result = lambda_client.get_function_configuration(FunctionName=function_name)814        snapshot.match("get-configuration-result", result)815        assert result["Environment"] == {"Variables": env_vars}816    @parametrize_python_runtimes817    def test_invocation_with_qualifier(818        self,819        lambda_client,820        s3_client,821        s3_bucket,822        runtime,823        check_lambda_logs,824        lambda_su_role,825        wait_until_lambda_ready,826        snapshot,827    ):828        """Tests invocation of python lambda with a given qualifier"""829        function_name = f"test_lambda_{short_uid()}"830        bucket_key = "test_lambda.zip"831        # upload zip file to S3832        zip_file = create_lambda_archive(833            load_file(TEST_LAMBDA_PYTHON), get_content=True, libs=TEST_LAMBDA_LIBS, runtime=runtime834        )835        s3_client.upload_fileobj(BytesIO(zip_file), s3_bucket, bucket_key)836        # create lambda function837        response = lambda_client.create_function(838            FunctionName=function_name,839            Runtime=runtime,840            Role=lambda_su_role,841            Publish=True,842            Handler="handler.handler",843            Code={"S3Bucket": s3_bucket, "S3Key": bucket_key},844            Timeout=10,845        )846        snapshot.match("creation-response", response)847        configure_snapshot_for_context(snapshot, function_name)848        assert "Version" in response849        qualifier = response["Version"]850        wait_until_lambda_ready(function_name=function_name, qualifier=qualifier)851        # invoke lambda function852        data_before = b'{"foo": "bar with \'quotes\\""}'853        result = lambda_client.invoke(854            FunctionName=function_name, Payload=data_before, Qualifier=qualifier855        )856        result = read_streams(result)857        snapshot.match("invocation-response", result)858        data_after = json.loads(result["Payload"])859        assert json.loads(to_str(data_before)) == data_after["event"]860        context = data_after["context"]861        assert response["Version"] == context["function_version"]862        assert context.get("aws_request_id")863        assert function_name == context["function_name"]864        assert f"/aws/lambda/{function_name}" == context["log_group_name"]865        assert context.get("log_stream_name")866        assert context.get("memory_limit_in_mb")867        # assert that logs are present868        expected = [".*Lambda log message - print function.*"]869        if use_docker():870            # Note that during regular test execution, nosetests captures the output from871            # the logging module - hence we can only expect this when running in Docker872            expected.append(".*Lambda log message - logging module.*")873        def check_logs():874            check_lambda_logs(function_name, expected_lines=expected)875        retry(check_logs, retries=10)876        lambda_client.delete_function(FunctionName=function_name)877    @parametrize_python_runtimes878    def test_upload_lambda_from_s3(879        self,880        lambda_client,881        s3_client,882        s3_bucket,883        runtime,884        lambda_su_role,885        wait_until_lambda_ready,886        snapshot,887    ):888        """Test invocation of a python lambda with its deployment package uploaded to s3"""889        function_name = f"test_lambda_{short_uid()}"890        bucket_key = "test_lambda.zip"891        # upload zip file to S3892        zip_file = testutil.create_lambda_archive(893            load_file(TEST_LAMBDA_PYTHON), get_content=True, libs=TEST_LAMBDA_LIBS, runtime=runtime894        )895        s3_client.upload_fileobj(BytesIO(zip_file), s3_bucket, bucket_key)896        # create lambda function897        create_response = lambda_client.create_function(898            FunctionName=function_name,899            Runtime=runtime,900            Handler="handler.handler",901            Role=lambda_su_role,902            Code={"S3Bucket": s3_bucket, "S3Key": bucket_key},903            Timeout=10,904        )905        snapshot.match("creation-response", create_response)906        configure_snapshot_for_context(snapshot, function_name)907        wait_until_lambda_ready(function_name=function_name)908        # invoke lambda function909        data_before = b'{"foo": "bar with \'quotes\\""}'910        result = lambda_client.invoke(FunctionName=function_name, Payload=data_before)911        result = read_streams(result)912        snapshot.match("invocation-response", result)913        data_after = json.loads(result["Payload"])914        assert json.loads(to_str(data_before)) == data_after["event"]915        context = data_after["context"]916        assert "$LATEST" == context["function_version"]917        assert function_name == context["function_name"]918        # clean up919        lambda_client.delete_function(FunctionName=function_name)920    @parametrize_python_runtimes921    def test_handler_in_submodule(self, lambda_client, create_lambda_function, runtime):922        """Test invocation of a lambda handler which resides in a submodule (= not root module)"""923        function_name = f"test-function-{short_uid()}"924        zip_file = testutil.create_lambda_archive(925            load_file(TEST_LAMBDA_PYTHON),926            get_content=True,927            libs=TEST_LAMBDA_LIBS,928            runtime=runtime,929            file_name="localstack_package/def/main.py",930        )931        create_lambda_function(932            func_name=function_name,933            zip_file=zip_file,934            handler="localstack_package.def.main.handler",935            runtime=runtime,936        )937        # invoke function and assert result938        result = lambda_client.invoke(FunctionName=function_name, Payload=b"{}")939        result_data = json.loads(result["Payload"].read())940        assert 200 == result["StatusCode"]941        assert json.loads("{}") == result_data["event"]942    @parametrize_python_runtimes943    def test_lambda_send_message_to_sqs(944        self,945        lambda_client,946        create_lambda_function,947        sqs_client,948        sqs_create_queue,949        runtime,950        lambda_su_role,951    ):952        """Send sqs message to sqs queue inside python lambda"""953        function_name = f"test-function-{short_uid()}"954        queue_name = f"lambda-queue-{short_uid()}"955        queue_url = sqs_create_queue(QueueName=queue_name)956        create_lambda_function(957            handler_file=TEST_LAMBDA_SEND_MESSAGE_FILE,958            func_name=function_name,959            runtime=runtime,960            role=lambda_su_role,961        )962        event = {963            "message": f"message-from-test-lambda-{short_uid()}",964            "queue_name": queue_name,965            "region_name": sqs_client.meta.region_name,966        }967        lambda_client.invoke(FunctionName=function_name, Payload=json.dumps(event))968        # assert that message has been received on the Queue969        def receive_message():970            rs = sqs_client.receive_message(QueueUrl=queue_url, MessageAttributeNames=["All"])971            assert len(rs["Messages"]) > 0972            return rs["Messages"][0]973        message = retry(receive_message, retries=15, sleep=2)974        assert event["message"] == message["Body"]975    @parametrize_python_runtimes976    def test_lambda_put_item_to_dynamodb(977        self,978        lambda_client,979        create_lambda_function,980        dynamodb_create_table,981        runtime,982        dynamodb_resource,983        lambda_su_role,984        dynamodb_client,985    ):986        """Put item into dynamodb from python lambda"""987        table_name = f"ddb-table-{short_uid()}"988        function_name = f"test-function-{short_uid()}"989        dynamodb_create_table(table_name=table_name, partition_key="id")990        create_lambda_function(991            handler_file=TEST_LAMBDA_PUT_ITEM_FILE,992            func_name=function_name,993            runtime=runtime,994            role=lambda_su_role,995        )996        data = {short_uid(): f"data-{i}" for i in range(3)}997        event = {998            "table_name": table_name,999            "region_name": dynamodb_client.meta.region_name,1000            "items": [{"id": k, "data": v} for k, v in data.items()],1001        }1002        def wait_for_table_created():1003            return (1004                dynamodb_client.describe_table(TableName=table_name)["Table"]["TableStatus"]1005                == "ACTIVE"1006            )1007        assert poll_condition(wait_for_table_created, timeout=30)1008        lambda_client.invoke(FunctionName=function_name, Payload=json.dumps(event))1009        rs = dynamodb_resource.Table(table_name).scan()1010        items = rs["Items"]1011        assert len(items) == len(data.keys())1012        for item in items:1013            assert data[item["id"]] == item["data"]1014    @parametrize_python_runtimes1015    def test_lambda_start_stepfunctions_execution(1016        self, lambda_client, stepfunctions_client, create_lambda_function, runtime, lambda_su_role1017    ):1018        """Start stepfunctions machine execution from lambda"""1019        function_name = f"test-function-{short_uid()}"1020        resource_lambda_name = f"test-resource-{short_uid()}"1021        state_machine_name = f"state-machine-{short_uid()}"1022        create_lambda_function(1023            handler_file=TEST_LAMBDA_START_EXECUTION_FILE,1024            func_name=function_name,1025            runtime=runtime,1026            role=lambda_su_role,1027        )1028        resource_lambda_arn = create_lambda_function(1029            handler_file=TEST_LAMBDA_PYTHON_ECHO,1030            func_name=resource_lambda_name,1031            runtime=runtime,1032            role=lambda_su_role,1033        )["CreateFunctionResponse"]["FunctionArn"]1034        state_machine_def = {1035            "StartAt": "step1",1036            "States": {1037                "step1": {1038                    "Type": "Task",1039                    "Resource": resource_lambda_arn,1040                    "ResultPath": "$.result_value",1041                    "End": True,1042                }1043            },1044        }1045        rs = stepfunctions_client.create_state_machine(1046            name=state_machine_name,1047            definition=json.dumps(state_machine_def),1048            roleArn=lambda_su_role,1049        )1050        sm_arn = rs["stateMachineArn"]1051        try:1052            lambda_client.invoke(1053                FunctionName=function_name,1054                Payload=json.dumps(1055                    {1056                        "state_machine_arn": sm_arn,1057                        "region_name": stepfunctions_client.meta.region_name,1058                        "input": {},1059                    }1060                ),1061            )1062            time.sleep(1)1063            rs = stepfunctions_client.list_executions(stateMachineArn=sm_arn)1064            # assert that state machine get executed 1 time1065            assert 1 == len([ex for ex in rs["executions"] if ex["stateMachineArn"] == sm_arn])1066        finally:1067            # clean up1068            stepfunctions_client.delete_state_machine(stateMachineArn=sm_arn)1069    @pytest.mark.skipif(1070        not use_docker(), reason="Test for docker python runtimes not applicable if run locally"1071    )1072    @parametrize_python_runtimes1073    def test_python_runtime_correct_versions(self, lambda_client, create_lambda_function, runtime):1074        """Test different versions of python runtimes to report back the correct python version"""1075        function_name = f"test_python_executor_{short_uid()}"1076        create_lambda_function(1077            func_name=function_name,1078            handler_file=TEST_LAMBDA_PYTHON_VERSION,1079            runtime=runtime,1080        )1081        result = lambda_client.invoke(1082            FunctionName=function_name,1083            Payload=b"{}",1084        )1085        result = json.loads(to_str(result["Payload"].read()))1086        assert result["version"] == runtime1087    @pytest.mark.skipif(1088        not use_docker(), reason="Test for docker python runtimes not applicable if run locally"1089    )1090    @parametrize_python_runtimes1091    def test_python_runtime_unhandled_errors(1092        self, lambda_client, create_lambda_function, runtime, snapshot1093    ):1094        """Test unhandled errors during python lambda invocation"""1095        function_name = f"test_python_executor_{short_uid()}"1096        creation_response = create_lambda_function(1097            func_name=function_name,1098            handler_file=TEST_LAMBDA_PYTHON_UNHANDLED_ERROR,1099            runtime=runtime,1100        )1101        snapshot.match("creation_response", creation_response)1102        result = lambda_client.invoke(1103            FunctionName=function_name,1104            Payload=b"{}",1105        )1106        result = read_streams(result)1107        snapshot.match("invocation_response", result)1108        assert result["StatusCode"] == 2001109        assert result["ExecutedVersion"] == "$LATEST"1110        assert result["FunctionError"] == "Unhandled"1111        payload = json.loads(result["Payload"])1112        assert payload["errorType"] == "CustomException"1113        assert payload["errorMessage"] == "some error occurred"1114        assert "stackTrace" in payload1115        if (1116            runtime == "python3.9" and not is_old_provider()1117        ):  # TODO: remove this after the legacy provider is gone1118            assert "requestId" in payload1119        else:1120            assert "requestId" not in payload1121parametrize_node_runtimes = pytest.mark.parametrize(1122    "runtime",1123    NODE_TEST_RUNTIMES,1124)1125class TestNodeJSRuntimes:1126    @pytest.mark.skipif(1127        not use_docker(), reason="Test for docker nodejs runtimes not applicable if run locally"1128    )1129    @parametrize_node_runtimes1130    def test_nodejs_lambda_with_context(1131        self, lambda_client, create_lambda_function, runtime, check_lambda_logs, snapshot1132    ):1133        """Test context of nodejs lambda invocation"""1134        function_name = f"test-function-{short_uid()}"1135        creation_response = create_lambda_function(1136            func_name=function_name,1137            handler_file=TEST_LAMBDA_INTEGRATION_NODEJS,1138            handler="lambda_integration.handler",1139            runtime=runtime,1140        )1141        snapshot.match("creation", creation_response)1142        ctx = {1143            "custom": {"foo": "bar"},1144            "client": {"snap": ["crackle", "pop"]},1145            "env": {"fizz": "buzz"},1146        }1147        configure_snapshot_for_context(snapshot, function_name)1148        result = lambda_client.invoke(1149            FunctionName=function_name,1150            Payload=b"{}",1151            ClientContext=to_str(base64.b64encode(to_bytes(json.dumps(ctx)))),1152        )1153        result = read_streams(result)1154        snapshot.match("invocation", result)1155        result_data = result["Payload"]1156        assert 200 == result["StatusCode"]1157        client_context = json.loads(result_data)["context"]["clientContext"]1158        # TODO in the old provider, for some reason this is necessary. That is invalid behavior1159        if is_old_provider():1160            client_context = json.loads(client_context)1161        assert "bar" == client_context.get("custom").get("foo")1162        # assert that logs are present1163        expected = [".*Node.js Lambda handler executing."]1164        def check_logs():1165            check_lambda_logs(function_name, expected_lines=expected)1166        retry(check_logs, retries=15)1167    @parametrize_node_runtimes1168    def test_invoke_nodejs_lambda(1169        self, lambda_client, create_lambda_function, runtime, logs_client, snapshot1170    ):1171        """Test simple nodejs lambda invocation"""1172        function_name = f"test-function-{short_uid()}"1173        result = create_lambda_function(...

test_lambda_integration.py

Source:test_lambda_integration.py

...83            partition_key="id",84            stream_view_type="NEW_IMAGE",85        )["TableDescription"]86        # table ARNs are not sufficient as event source, needs to be a dynamodb stream arn87        if not is_old_provider():88            with pytest.raises(ClientError) as e:89                lambda_client.create_event_source_mapping(90                    EventSourceArn=table_description["TableArn"],91                    FunctionName=function_name,92                    StartingPosition="LATEST",93                )94            e.match(INVALID_PARAMETER_VALUE_EXCEPTION)95        # check if event source mapping can be created with latest stream ARN96        rs = lambda_client.create_event_source_mapping(97            EventSourceArn=table_description["LatestStreamArn"],98            FunctionName=function_name,99            StartingPosition="LATEST",100        )101        assert BATCH_SIZE_RANGES["dynamodb"][0] == rs["BatchSize"]102    def test_disabled_event_source_mapping_with_dynamodb(103        self,104        create_lambda_function,105        lambda_client,106        dynamodb_resource,107        dynamodb_client,108        dynamodb_create_table,109        logs_client,110        dynamodbstreams_client,111        lambda_su_role,112    ):113        function_name = f"lambda_func-{short_uid()}"114        ddb_table = f"ddb_table-{short_uid()}"115        create_lambda_function(116            func_name=function_name,117            handler_file=TEST_LAMBDA_PYTHON_ECHO,118            runtime=LAMBDA_RUNTIME_PYTHON36,119            role=lambda_su_role,120        )121        latest_stream_arn = dynamodb_create_table(122            table_name=ddb_table, partition_key="id", stream_view_type="NEW_IMAGE"123        )["TableDescription"]["LatestStreamArn"]124        rs = lambda_client.create_event_source_mapping(125            FunctionName=function_name,126            EventSourceArn=latest_stream_arn,127            StartingPosition="TRIM_HORIZON",128            MaximumBatchingWindowInSeconds=1,129        )130        uuid = rs["UUID"]131        def wait_for_table_created():132            return (133                dynamodb_client.describe_table(TableName=ddb_table)["Table"]["TableStatus"]134                == "ACTIVE"135            )136        assert poll_condition(wait_for_table_created, timeout=30)137        def wait_for_stream_created():138            return (139                dynamodbstreams_client.describe_stream(StreamArn=latest_stream_arn)[140                    "StreamDescription"141                ]["StreamStatus"]142                == "ENABLED"143            )144        assert poll_condition(wait_for_stream_created, timeout=30)145        table = dynamodb_resource.Table(ddb_table)146        items = [147            {"id": short_uid(), "data": "data1"},148            {"id": short_uid(), "data": "data2"},149        ]150        table.put_item(Item=items[0])151        def assert_events():152            events = get_lambda_log_events(function_name, logs_client=logs_client)153            # lambda was invoked 1 time154            assert 1 == len(events[0]["Records"])155        # might take some time against AWS156        retry(assert_events, sleep=3, retries=10)157        # disable event source mapping158        lambda_client.update_event_source_mapping(UUID=uuid, Enabled=False)159        table.put_item(Item=items[1])160        events = get_lambda_log_events(function_name, logs_client=logs_client)161        # lambda no longer invoked, still have 1 event162        assert 1 == len(events[0]["Records"])163    # TODO invalid test against AWS, this behavior just is not correct164    def test_deletion_event_source_mapping_with_dynamodb(165        self, create_lambda_function, lambda_client, dynamodb_client, lambda_su_role166    ):167        function_name = f"lambda_func-{short_uid()}"168        ddb_table = f"ddb_table-{short_uid()}"169        create_lambda_function(170            func_name=function_name,171            handler_file=TEST_LAMBDA_PYTHON_ECHO,172            runtime=LAMBDA_RUNTIME_PYTHON36,173            role=lambda_su_role,174        )175        latest_stream_arn = aws_stack.create_dynamodb_table(176            table_name=ddb_table,177            partition_key="id",178            client=dynamodb_client,179            stream_view_type="NEW_IMAGE",180        )["TableDescription"]["LatestStreamArn"]181        lambda_client.create_event_source_mapping(182            FunctionName=function_name,183            EventSourceArn=latest_stream_arn,184            StartingPosition="TRIM_HORIZON",185        )186        def wait_for_table_created():187            return (188                dynamodb_client.describe_table(TableName=ddb_table)["Table"]["TableStatus"]189                == "ACTIVE"190            )191        assert poll_condition(wait_for_table_created, timeout=30)192        dynamodb_client.delete_table(TableName=ddb_table)193        result = lambda_client.list_event_source_mappings(EventSourceArn=latest_stream_arn)194        assert 1 == len(result["EventSourceMappings"])195    def test_event_source_mapping_with_sqs(196        self,197        create_lambda_function,198        lambda_client,199        sqs_client,200        sqs_create_queue,201        sqs_queue_arn,202        logs_client,203        lambda_su_role,204    ):205        function_name = f"lambda_func-{short_uid()}"206        queue_name_1 = f"queue-{short_uid()}-1"207        create_lambda_function(208            func_name=function_name,209            handler_file=TEST_LAMBDA_PYTHON_ECHO,210            runtime=LAMBDA_RUNTIME_PYTHON36,211            role=lambda_su_role,212        )213        queue_url_1 = sqs_create_queue(QueueName=queue_name_1)214        queue_arn_1 = sqs_queue_arn(queue_url_1)215        lambda_client.create_event_source_mapping(216            EventSourceArn=queue_arn_1, FunctionName=function_name, MaximumBatchingWindowInSeconds=1217        )218        sqs_client.send_message(QueueUrl=queue_url_1, MessageBody=json.dumps({"foo": "bar"}))219        def assert_lambda_log_events():220            events = get_lambda_log_events(function_name=function_name, logs_client=logs_client)221            # lambda was invoked 1 time222            assert 1 == len(events[0]["Records"])223        retry(assert_lambda_log_events, sleep_before=3, retries=30)224        rs = sqs_client.receive_message(QueueUrl=queue_url_1)225        assert rs.get("Messages") is None226    def test_create_kinesis_event_source_mapping(227        self,228        create_lambda_function,229        lambda_client,230        kinesis_client,231        kinesis_create_stream,232        lambda_su_role,233        wait_for_stream_ready,234        logs_client,235    ):236        function_name = f"lambda_func-{short_uid()}"237        stream_name = f"test-foobar-{short_uid()}"238        create_lambda_function(239            func_name=function_name,240            handler_file=TEST_LAMBDA_PYTHON_ECHO,241            runtime=LAMBDA_RUNTIME_PYTHON36,242            role=lambda_su_role,243        )244        kinesis_create_stream(StreamName=stream_name, ShardCount=1)245        stream_arn = kinesis_client.describe_stream(StreamName=stream_name)["StreamDescription"][246            "StreamARN"247        ]248        # only valid against AWS / new provider (once implemented)249        if not is_old_provider():250            with pytest.raises(ClientError) as e:251                lambda_client.create_event_source_mapping(252                    EventSourceArn=stream_arn, FunctionName=function_name253                )254            e.match(INVALID_PARAMETER_VALUE_EXCEPTION)255        wait_for_stream_ready(stream_name=stream_name)256        lambda_client.create_event_source_mapping(257            EventSourceArn=stream_arn, FunctionName=function_name, StartingPosition="TRIM_HORIZON"258        )259        stream_summary = kinesis_client.describe_stream_summary(StreamName=stream_name)260        assert 1 == stream_summary["StreamDescriptionSummary"]["OpenShardCount"]261        num_events_kinesis = 10262        kinesis_client.put_records(263            Records=[...

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