[beam_stats.git] / test / beam_stats_consumer_statsd_SUITE.erl

-module(beam_stats_consumer_statsd_SUITE).

-include_lib("beam_stats/include/beam_stats.hrl").
-include_lib("beam_stats/include/beam_stats_ets_table.hrl").
-include_lib("beam_stats/include/beam_stats_process.hrl").
-include_lib("beam_stats/include/beam_stats_process_ancestry.hrl").
-include_lib("beam_stats/include/beam_stats_processes.hrl").

-export(
    [ all/0
    , groups/0
    ]).

%% Test cases
-export(
    [ t_full_cycle/1
    ]).

-define(GROUP, beam_stats_consumer_statsd).

%% ============================================================================
%% Common Test callbacks
%% ============================================================================

all() ->
    [{group, ?GROUP}].

groups() ->
    Tests =
        [ t_full_cycle
        ],
    Properties = [],
    [{?GROUP, Properties, Tests}].

%% ============================================================================
%%  Test cases
%% ============================================================================

t_full_cycle(_Cfg) ->
    meck:new(beam_stats_source),
    BEAMStatsExpected = meck_expect_beam_stats(),
    BEAMStatsComputed = beam_stats_state:export(beam_stats_state:new()),
    ct:log("BEAMStatsExpected: ~p~n", [BEAMStatsExpected]),
    ct:log("BEAMStatsComputed: ~p~n", [BEAMStatsComputed]),
    BEAMStatsExpected = BEAMStatsComputed,

    {ok,[hope,beam_stats]} = application:ensure_all_started(beam_stats),
    ct:log("beam_stats started~n"),
    ServerPort = 8125,
    {ok, ServerSocket} = gen_udp:open(ServerPort, [binary, {active, false}]),
    ct:log("UDP server started started~n"),
    {ok, _} = beam_stats_consumer:add(beam_stats_consumer_statsd,
        [ {consumption_interval , 60000}
        , {dst_host             , "localhost"}
        , {dst_port             , ServerPort}
        , {src_port             , 8124}
        , {num_msgs_per_packet  , 10}
        ]
    ),
    ct:log("consumer added~n"),
    _ = meck_expect_beam_stats(
        % Double the original values, so that deltas will equal originals after
        % 1 update of new beam_stats_state:t()
        [ {io_bytes_in      , 6}
        , {io_bytes_out     , 14}
        , {context_switches , 10}
        ]
    ),
    ct:log("meck_expect_beam_stats ok~n"),
    {} = beam_stats_producer:sync_produce_consume(),
    ct:log("produced and consumed~n"),
    ok = application:stop(beam_stats),
    ct:log("beam_stats stopped~n"),

    ResultOfReceive1 = gen_udp:recv(ServerSocket, 0),
    ResultOfReceive2 = gen_udp:recv(ServerSocket, 0),
    ResultOfReceive3 = gen_udp:recv(ServerSocket, 0),
    ResultOfReceive4 = gen_udp:recv(ServerSocket, 0),
    ok = gen_udp:close(ServerSocket),
    {ok, {_, _, PacketReceived1}} = ResultOfReceive1,
    {ok, {_, _, PacketReceived2}} = ResultOfReceive2,
    {ok, {_, _, PacketReceived3}} = ResultOfReceive3,
    {ok, {_, _, PacketReceived4}} = ResultOfReceive4,
    ct:log("PacketReceived1: ~n~s~n", [PacketReceived1]),
    ct:log("PacketReceived2: ~n~s~n", [PacketReceived2]),
    ct:log("PacketReceived3: ~n~s~n", [PacketReceived3]),
    ct:log("PacketReceived4: ~n~s~n", [PacketReceived4]),
    PacketsCombined =
        << PacketReceived1/binary
         , PacketReceived2/binary
         , PacketReceived3/binary
         , PacketReceived4/binary
        >>,
    ct:log("PacketsCombined: ~n~s~n", [PacketsCombined]),
    MsgsExpected =
        [ <<"beam_stats.node_foo_host_bar.io.bytes_in:3|g">>
        , <<"beam_stats.node_foo_host_bar.io.bytes_out:7|g">>
        , <<"beam_stats.node_foo_host_bar.context_switches:5|g">>
        , <<"beam_stats.node_foo_host_bar.reductions:9|g">>
        , <<"beam_stats.node_foo_host_bar.run_queue:17|g">>
        , <<"beam_stats.node_foo_host_bar.memory.mem_type_foo:1|g">>
        , <<"beam_stats.node_foo_host_bar.memory.mem_type_bar:2|g">>
        , <<"beam_stats.node_foo_host_bar.memory.mem_type_baz:3|g">>
        , <<"beam_stats.node_foo_host_bar.ets_table.size.foo.foo:5|g">>
        , <<"beam_stats.node_foo_host_bar.ets_table.memory.foo.foo:40|g">>
        , <<"beam_stats.node_foo_host_bar.ets_table.size.bar.37:8|g">>
        , <<"beam_stats.node_foo_host_bar.ets_table.memory.bar.37:64|g">>

        % Processes totals
        , <<"beam_stats.node_foo_host_bar.processes_count_all:4|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_exiting:0|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_garbage_collecting:0|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_registered:1|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_runnable:0|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_running:3|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_suspended:0|g">>
        , <<"beam_stats.node_foo_host_bar.processes_count_waiting:1|g">>

        % Process 1
        , <<"beam_stats.node_foo_host_bar.process_memory.named--reg_name_foo:15|g">>
        , <<"beam_stats.node_foo_host_bar.process_total_heap_size.named--reg_name_foo:25|g">>
        , <<"beam_stats.node_foo_host_bar.process_stack_size.named--reg_name_foo:10|g">>
        , <<"beam_stats.node_foo_host_bar.process_message_queue_len.named--reg_name_foo:0|g">>

        % Process 2
        , <<"beam_stats.node_foo_host_bar.process_memory.spawned-via--bar_mod-bar_fun-1--NONE--NONE:25|g">>
        , <<"beam_stats.node_foo_host_bar.process_total_heap_size.spawned-via--bar_mod-bar_fun-1--NONE--NONE:35|g">>
        , <<"beam_stats.node_foo_host_bar.process_stack_size.spawned-via--bar_mod-bar_fun-1--NONE--NONE:40|g">>
        , <<"beam_stats.node_foo_host_bar.process_message_queue_len.spawned-via--bar_mod-bar_fun-1--NONE--NONE:5|g">>

        % Process 3 and 4, aggregated by origin
        , <<"beam_stats.node_foo_host_bar.process_memory.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:30|g">>
        , <<"beam_stats.node_foo_host_bar.process_total_heap_size.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:45|g">>
        , <<"beam_stats.node_foo_host_bar.process_stack_size.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:55|g">>
        , <<"beam_stats.node_foo_host_bar.process_message_queue_len.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:1|g">>
        ],
    MsgsReceived = binary:split(PacketsCombined, <<"\n">>, [global, trim]),
    RemoveExpectedFromReceived =
        fun (Expected, Received) ->
            ct:log(
                "Looking for expected msg ~p in remaining received ~p~n",
                [Expected, Received]
            ),
            true = lists:member(Expected, Received),
            Received -- [Expected]
        end,
    [] = lists:foldl(RemoveExpectedFromReceived, MsgsReceived, MsgsExpected),
    meck:unload(beam_stats_source).

meck_expect_beam_stats() ->
    meck_expect_beam_stats([]).

meck_expect_beam_stats(Overrides) ->
    IOBytesIn       = hope_kv_list:get(Overrides, io_bytes_in , 3),
    IOBytesOut      = hope_kv_list:get(Overrides, io_bytes_out, 7),
    ContextSwitches = hope_kv_list:get(Overrides, context_switches, 5),
    Pid0 = list_to_pid("<0.0.0>"),
    Pid1 = list_to_pid("<0.1.0>"),
    Pid2 = list_to_pid("<0.2.0>"),
    Pid3 = list_to_pid("<0.3.0>"),
    Pid4 = list_to_pid("<0.4.0>"),
    Process1 =
        #beam_stats_process
        { pid               = Pid1
        , registered_name   = {some, reg_name_foo}
        , ancestry =
              #beam_stats_process_ancestry
              { raw_initial_call  = {foo_mod, foo_fun, 2}
              , otp_initial_call  = none
              , otp_ancestors     = none
              }
        , status            = running
        , memory            = 15
        , total_heap_size   = 25
        , stack_size        = 10
        , message_queue_len = 0
        },
    Process2 =
        #beam_stats_process
        { pid               = Pid2
        , registered_name   = none
        , ancestry =
              #beam_stats_process_ancestry
              { raw_initial_call  = {bar_mod, bar_fun, 1}
              , otp_initial_call  = none
              , otp_ancestors     = none
              }
        , status            = running
        , memory            = 25
        , total_heap_size   = 35
        , stack_size        = 40
        , message_queue_len = 5
        },
    Process3 =
        #beam_stats_process
        { pid               = Pid3
        , registered_name   = none
        , ancestry =
              #beam_stats_process_ancestry
              { raw_initial_call  = {baz_mod, baz_fun, 3}
              , otp_initial_call  = {some, {baz_otp_mod, baz_otp_fun, 2}}
              , otp_ancestors     = {some, [Pid0, Pid1]}
              }
        , status            = running
        , memory            = 25
        , total_heap_size   = 35
        , stack_size        = 40
        , message_queue_len = 1
        },
    Process4 =
        #beam_stats_process
        { pid               = Pid4
        , registered_name   = none
        , ancestry =
              #beam_stats_process_ancestry
              { raw_initial_call  = {baz_mod, baz_fun, 3}
              , otp_initial_call  = {some, {baz_otp_mod, baz_otp_fun, 2}}
              , otp_ancestors     = {some, [Pid0, Pid1]}
              }
        , status            = waiting
        , memory            = 5
        , total_heap_size   = 10
        , stack_size        = 15
        , message_queue_len = 0
        },
    Processes =
        #beam_stats_processes
        { individual_stats =
            [ Process1
            , Process2
            , Process3
            , Process4
            ]
        , count_all                = 4
        , count_exiting            = 0
        , count_garbage_collecting = 0
        , count_registered         = 1
        , count_runnable           = 0
        , count_running            = 3
        , count_suspended          = 0
        , count_waiting            = 1
        },
    ETSTableStatsFoo =
        #beam_stats_ets_table
        { id     = foo
        , name   = foo
        , size   = 5
        , memory = 40
        },
    ETSTableStatsBar =
        #beam_stats_ets_table
        { id     = 37
        , name   = bar
        , size   = 8
        , memory = 64
        },
    meck:expect(beam_stats_source, erlang_memory,
        fun () -> [{mem_type_foo, 1}, {mem_type_bar, 2}, {mem_type_baz, 3}] end),
    meck:expect(beam_stats_source, erlang_node,
        fun () -> 'node_foo@host_bar' end),
    meck:expect(beam_stats_source, erlang_registered,
        fun () -> [reg_name_foo] end),
    meck:expect(beam_stats_source, erlang_statistics,
        fun (io              ) -> {{input, IOBytesIn}, {output, IOBytesOut}}
        ;   (context_switches) -> {ContextSwitches, 0}
        ;   (reductions      ) -> {0, 9} % 1st element is unused
        ;   (run_queue       ) -> 17
        end
    ),
    meck:expect(beam_stats_source, ets_all,
        fun () -> [foo, 37] end),
    meck:expect(beam_stats_source, erlang_system_info,
        fun (wordsize) -> 8 end),
    meck:expect(beam_stats_source, ets_info,
        fun (foo, memory) -> 5
        ;   (foo, name  ) -> foo
        ;   (foo, size  ) -> 5
        ;   (37 , memory) -> 8
        ;   (37 , name  ) -> bar
        ;   (37 , size  ) -> 8
        end
    ),
    meck:expect(beam_stats_source, erlang_processes,
        fun () -> [Pid1, Pid2, Pid3, Pid4] end),
    meck:expect(beam_stats_source, os_timestamp,
        fun () -> {1, 2, 3} end),
    meck:expect(beam_stats_source, erlang_process_info,
        fun (P, K) when P == Pid1 ->
                case K
                of  dictionary        -> {K, []}
                ;   initial_call      -> {K, {foo_mod, foo_fun, 2}}
                ;   registered_name   -> {K, reg_name_foo}
                ;   status            -> {K, running}
                ;   memory            -> {K, 15}
                ;   total_heap_size   -> {K, 25}
                ;   stack_size        -> {K, 10}
                ;   message_queue_len -> {K, 0}
                end
        ;   (P, K) when P == Pid2 ->
                case K
                of  dictionary        -> {K, []}
                ;   initial_call      -> {K, {bar_mod, bar_fun, 1}}
                ;   registered_name   -> []
                ;   status            -> {K, running}
                ;   memory            -> {K, 25}
                ;   total_heap_size   -> {K, 35}
                ;   stack_size        -> {K, 40}
                ;   message_queue_len -> {K, 5}
                end
        ;   (P, K) when P == Pid3 ->
                Dict =
                    [ {'$initial_call', {baz_otp_mod, baz_otp_fun, 2}}
                    , {'$ancestors'   , [Pid0, Pid1]}
                    ],
                case K
                of  dictionary        -> {K, Dict}
                ;   initial_call      -> {K, {baz_mod, baz_fun, 3}}
                ;   registered_name   -> []
                ;   status            -> {K, running}
                ;   memory            -> {K, 25}
                ;   total_heap_size   -> {K, 35}
                ;   stack_size        -> {K, 40}
                ;   message_queue_len -> {K, 1}
                end
        ;   (P, K) when P == Pid4 ->
                Dict =
                    [ {'$initial_call', {baz_otp_mod, baz_otp_fun, 2}}
                    , {'$ancestors'   , [Pid0, Pid1]}
                    ],
                case K
                of  dictionary        -> {K, Dict}
                ;   initial_call      -> {K, {baz_mod, baz_fun, 3}}
                ;   registered_name   -> []
                ;   status            -> {K, waiting}
                ;   memory            -> {K, 5}
                ;   total_heap_size   -> {K, 10}
                ;   stack_size        -> {K, 15}
                ;   message_queue_len -> {K, 0}
                end
        end
    ),
    #beam_stats
    { timestamp = {1, 2, 3}
    , node_id   = 'node_foo@host_bar'
    , memory    = [{mem_type_foo, 1}, {mem_type_bar, 2}, {mem_type_baz, 3}]
    , io_bytes_in  = IOBytesIn
    , io_bytes_out = IOBytesOut
    , context_switches = ContextSwitches
    , reductions       = 9
    , run_queue        = 17
    , ets              = [ETSTableStatsFoo, ETSTableStatsBar]
    , processes        = Processes
    }.
Commit	Line	Data
b0ab6ee2 SK	1	-module(beam_stats_consumer_statsd_SUITE).
b0ab6ee2 SK	2
da5f2544	3	-include_lib("beam_stats/include/beam_stats.hrl").
a8d431d1	4	-include_lib("beam_stats/include/beam_stats_ets_table.hrl").
69ebab97 SK	5	-include_lib("beam_stats/include/beam_stats_process.hrl").
	6	-include_lib("beam_stats/include/beam_stats_process_ancestry.hrl").
	7	-include_lib("beam_stats/include/beam_stats_processes.hrl").
da5f2544	8
b0ab6ee2 SK	9	-export(
	10	[ all/0
	11	, groups/0
	12	]).
	13
	14	%% Test cases
	15	-export(
f4dcce84	16	[ t_full_cycle/1
b0ab6ee2 SK	17	]).
b0ab6ee2 SK	18
5681263f	19	-define(GROUP, beam_stats_consumer_statsd).
b0ab6ee2 SK	20
	21	%% ============================================================================
	22	%% Common Test callbacks
	23	%% ============================================================================
	24
	25	all() ->
	26	[{group, ?GROUP}].
	27
	28	groups() ->
	29	Tests =
f4dcce84	30	[ t_full_cycle
b0ab6ee2 SK	31	],
	32	Properties = [],
	33	[{?GROUP, Properties, Tests}].
	34
69ebab97	35	%% ============================================================================
b0ab6ee2	36	%% Test cases
69ebab97	37	%% ============================================================================
b0ab6ee2	38
f4dcce84 SK	39	t_full_cycle(_Cfg) ->
	40	meck:new(beam_stats_source),
	41	BEAMStatsExpected = meck_expect_beam_stats(),
	42	BEAMStatsComputed = beam_stats_state:export(beam_stats_state:new()),
	43	ct:log("BEAMStatsExpected: ~p~n", [BEAMStatsExpected]),
	44	ct:log("BEAMStatsComputed: ~p~n", [BEAMStatsComputed]),
	45	BEAMStatsExpected = BEAMStatsComputed,
	46
	47	{ok,[hope,beam_stats]} = application:ensure_all_started(beam_stats),
	48	ct:log("beam_stats started~n"),
da5f2544 SK	49	ServerPort = 8125,
da5f2544 SK	50	{ok, ServerSocket} = gen_udp:open(ServerPort, [binary, {active, false}]),
f4dcce84 SK	51	ct:log("UDP server started started~n"),
	52	{ok, _} = beam_stats_consumer:add(beam_stats_consumer_statsd,
	53	[ {consumption_interval , 60000}
	54	, {dst_host , "localhost"}
	55	, {dst_port , ServerPort}
	56	, {src_port , 8124}
	57	, {num_msgs_per_packet , 10}
	58	]
	59	),
	60	ct:log("consumer added~n"),
	61	_ = meck_expect_beam_stats(
	62	% Double the original values, so that deltas will equal originals after
	63	% 1 update of new beam_stats_state:t()
	64	[ {io_bytes_in , 6}
	65	, {io_bytes_out , 14}
	66	, {context_switches , 10}
	67	]
	68	),
	69	ct:log("meck_expect_beam_stats ok~n"),
	70	{} = beam_stats_producer:sync_produce_consume(),
	71	ct:log("produced and consumed~n"),
	72	ok = application:stop(beam_stats),
	73	ct:log("beam_stats stopped~n"),
	74
4d24f3b7	75	ResultOfReceive1 = gen_udp:recv(ServerSocket, 0),
4d24f3b7	76	ResultOfReceive2 = gen_udp:recv(ServerSocket, 0),
69ebab97 SK	77	ResultOfReceive3 = gen_udp:recv(ServerSocket, 0),
69ebab97 SK	78	ResultOfReceive4 = gen_udp:recv(ServerSocket, 0),
da5f2544	79	ok = gen_udp:close(ServerSocket),
69ebab97 SK	80	{ok, {_, _, PacketReceived1}} = ResultOfReceive1,
	81	{ok, {_, _, PacketReceived2}} = ResultOfReceive2,
	82	{ok, {_, _, PacketReceived3}} = ResultOfReceive3,
	83	{ok, {_, _, PacketReceived4}} = ResultOfReceive4,
4d24f3b7 SK	84	ct:log("PacketReceived1: ~n~s~n", [PacketReceived1]),
4d24f3b7 SK	85	ct:log("PacketReceived2: ~n~s~n", [PacketReceived2]),
69ebab97 SK	86	ct:log("PacketReceived3: ~n~s~n", [PacketReceived3]),
	87	ct:log("PacketReceived4: ~n~s~n", [PacketReceived4]),
	88	PacketsCombined =
	89	<< PacketReceived1/binary
	90	, PacketReceived2/binary
	91	, PacketReceived3/binary
	92	, PacketReceived4/binary
	93	>>,
4d24f3b7 SK	94	ct:log("PacketsCombined: ~n~s~n", [PacketsCombined]),
	95	MsgsExpected =
	96	[ <<"beam_stats.node_foo_host_bar.io.bytes_in:3\|g">>
	97	, <<"beam_stats.node_foo_host_bar.io.bytes_out:7\|g">>
	98	, <<"beam_stats.node_foo_host_bar.context_switches:5\|g">>
	99	, <<"beam_stats.node_foo_host_bar.reductions:9\|g">>
	100	, <<"beam_stats.node_foo_host_bar.run_queue:17\|g">>
	101	, <<"beam_stats.node_foo_host_bar.memory.mem_type_foo:1\|g">>
	102	, <<"beam_stats.node_foo_host_bar.memory.mem_type_bar:2\|g">>
	103	, <<"beam_stats.node_foo_host_bar.memory.mem_type_baz:3\|g">>
	104	, <<"beam_stats.node_foo_host_bar.ets_table.size.foo.foo:5\|g">>
f4dcce84	105	, <<"beam_stats.node_foo_host_bar.ets_table.memory.foo.foo:40\|g">>
4d24f3b7	106	, <<"beam_stats.node_foo_host_bar.ets_table.size.bar.37:8\|g">>
f4dcce84	107	, <<"beam_stats.node_foo_host_bar.ets_table.memory.bar.37:64\|g">>
69ebab97 SK	108
69ebab97 SK	109	% Processes totals
697c496d	110	, <<"beam_stats.node_foo_host_bar.processes_count_all:4\|g">>
69ebab97 SK	111	, <<"beam_stats.node_foo_host_bar.processes_count_exiting:0\|g">>
	112	, <<"beam_stats.node_foo_host_bar.processes_count_garbage_collecting:0\|g">>
	113	, <<"beam_stats.node_foo_host_bar.processes_count_registered:1\|g">>
	114	, <<"beam_stats.node_foo_host_bar.processes_count_runnable:0\|g">>
	115	, <<"beam_stats.node_foo_host_bar.processes_count_running:3\|g">>
	116	, <<"beam_stats.node_foo_host_bar.processes_count_suspended:0\|g">>
697c496d	117	, <<"beam_stats.node_foo_host_bar.processes_count_waiting:1\|g">>
69ebab97 SK	118
69ebab97 SK	119	% Process 1
f65a3845 SK	120	, <<"beam_stats.node_foo_host_bar.process_memory.named--reg_name_foo:15\|g">>
	121	, <<"beam_stats.node_foo_host_bar.process_total_heap_size.named--reg_name_foo:25\|g">>
	122	, <<"beam_stats.node_foo_host_bar.process_stack_size.named--reg_name_foo:10\|g">>
	123	, <<"beam_stats.node_foo_host_bar.process_message_queue_len.named--reg_name_foo:0\|g">>
69ebab97 SK	124
69ebab97 SK	125	% Process 2
f65a3845 SK	126	, <<"beam_stats.node_foo_host_bar.process_memory.spawned-via--bar_mod-bar_fun-1--NONE--NONE:25\|g">>
	127	, <<"beam_stats.node_foo_host_bar.process_total_heap_size.spawned-via--bar_mod-bar_fun-1--NONE--NONE:35\|g">>
	128	, <<"beam_stats.node_foo_host_bar.process_stack_size.spawned-via--bar_mod-bar_fun-1--NONE--NONE:40\|g">>
	129	, <<"beam_stats.node_foo_host_bar.process_message_queue_len.spawned-via--bar_mod-bar_fun-1--NONE--NONE:5\|g">>
69ebab97	130
697c496d SK	131	% Process 3 and 4, aggregated by origin
	132	, <<"beam_stats.node_foo_host_bar.process_memory.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:30\|g">>
	133	, <<"beam_stats.node_foo_host_bar.process_total_heap_size.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:45\|g">>
	134	, <<"beam_stats.node_foo_host_bar.process_stack_size.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:55\|g">>
f65a3845	135	, <<"beam_stats.node_foo_host_bar.process_message_queue_len.spawned-via--baz_mod-baz_fun-3--baz_otp_mod-baz_otp_fun-2--0_0_0-0_1_0:1\|g">>
4d24f3b7 SK	136	],
	137	MsgsReceived = binary:split(PacketsCombined, <<"\n">>, [global, trim]),
	138	RemoveExpectedFromReceived =
	139	fun (Expected, Received) ->
	140	ct:log(
	141	"Looking for expected msg ~p in remaining received ~p~n",
	142	[Expected, Received]
	143	),
	144	true = lists:member(Expected, Received),
	145	Received -- [Expected]
	146	end,
f4dcce84 SK	147	[] = lists:foldl(RemoveExpectedFromReceived, MsgsReceived, MsgsExpected),
	148	meck:unload(beam_stats_source).
	149
	150	meck_expect_beam_stats() ->
	151	meck_expect_beam_stats([]).
7786d23b	152
f4dcce84 SK	153	meck_expect_beam_stats(Overrides) ->
	154	IOBytesIn = hope_kv_list:get(Overrides, io_bytes_in , 3),
	155	IOBytesOut = hope_kv_list:get(Overrides, io_bytes_out, 7),
	156	ContextSwitches = hope_kv_list:get(Overrides, context_switches, 5),
7786d23b SK	157	Pid0 = list_to_pid("<0.0.0>"),
	158	Pid1 = list_to_pid("<0.1.0>"),
	159	Pid2 = list_to_pid("<0.2.0>"),
	160	Pid3 = list_to_pid("<0.3.0>"),
697c496d	161	Pid4 = list_to_pid("<0.4.0>"),
7786d23b SK	162	Process1 =
	163	#beam_stats_process
	164	{ pid = Pid1
	165	, registered_name = {some, reg_name_foo}
	166	, ancestry =
	167	#beam_stats_process_ancestry
	168	{ raw_initial_call = {foo_mod, foo_fun, 2}
	169	, otp_initial_call = none
	170	, otp_ancestors = none
	171	}
	172	, status = running
	173	, memory = 15
	174	, total_heap_size = 25
	175	, stack_size = 10
	176	, message_queue_len = 0
	177	},
	178	Process2 =
	179	#beam_stats_process
	180	{ pid = Pid2
	181	, registered_name = none
	182	, ancestry =
	183	#beam_stats_process_ancestry
	184	{ raw_initial_call = {bar_mod, bar_fun, 1}
	185	, otp_initial_call = none
	186	, otp_ancestors = none
	187	}
	188	, status = running
	189	, memory = 25
	190	, total_heap_size = 35
	191	, stack_size = 40
	192	, message_queue_len = 5
	193	},
	194	Process3 =
	195	#beam_stats_process
	196	{ pid = Pid3
	197	, registered_name = none
	198	, ancestry =
	199	#beam_stats_process_ancestry
	200	{ raw_initial_call = {baz_mod, baz_fun, 3}
	201	, otp_initial_call = {some, {baz_otp_mod, baz_otp_fun, 2}}
	202	, otp_ancestors = {some, [Pid0, Pid1]}
	203	}
	204	, status = running
	205	, memory = 25
	206	, total_heap_size = 35
	207	, stack_size = 40
	208	, message_queue_len = 1
	209	},
697c496d SK	210	Process4 =
	211	#beam_stats_process
	212	{ pid = Pid4
	213	, registered_name = none
	214	, ancestry =
	215	#beam_stats_process_ancestry
	216	{ raw_initial_call = {baz_mod, baz_fun, 3}
	217	, otp_initial_call = {some, {baz_otp_mod, baz_otp_fun, 2}}
	218	, otp_ancestors = {some, [Pid0, Pid1]}
	219	}
	220	, status = waiting
	221	, memory = 5
	222	, total_heap_size = 10
	223	, stack_size = 15
	224	, message_queue_len = 0
	225	},
7786d23b SK	226	Processes =
	227	#beam_stats_processes
	228	{ individual_stats =
	229	[ Process1
	230	, Process2
	231	, Process3
697c496d	232	, Process4
7786d23b	233	]
697c496d	234	, count_all = 4
7786d23b SK	235	, count_exiting = 0
	236	, count_garbage_collecting = 0
	237	, count_registered = 1
	238	, count_runnable = 0
	239	, count_running = 3
	240	, count_suspended = 0
697c496d	241	, count_waiting = 1
7786d23b SK	242	},
	243	ETSTableStatsFoo =
	244	#beam_stats_ets_table
	245	{ id = foo
	246	, name = foo
	247	, size = 5
	248	, memory = 40
	249	},
	250	ETSTableStatsBar =
	251	#beam_stats_ets_table
	252	{ id = 37
	253	, name = bar
	254	, size = 8
	255	, memory = 64
	256	},
7786d23b SK	257	meck:expect(beam_stats_source, erlang_memory,
	258	fun () -> [{mem_type_foo, 1}, {mem_type_bar, 2}, {mem_type_baz, 3}] end),
	259	meck:expect(beam_stats_source, erlang_node,
	260	fun () -> 'node_foo@host_bar' end),
	261	meck:expect(beam_stats_source, erlang_registered,
	262	fun () -> [reg_name_foo] end),
	263	meck:expect(beam_stats_source, erlang_statistics,
f4dcce84 SK	264	fun (io ) -> {{input, IOBytesIn}, {output, IOBytesOut}}
f4dcce84 SK	265	; (context_switches) -> {ContextSwitches, 0}
7786d23b SK	266	; (reductions ) -> {0, 9} % 1st element is unused
	267	; (run_queue ) -> 17
	268	end
	269	),
	270	meck:expect(beam_stats_source, ets_all,
	271	fun () -> [foo, 37] end),
	272	meck:expect(beam_stats_source, erlang_system_info,
	273	fun (wordsize) -> 8 end),
	274	meck:expect(beam_stats_source, ets_info,
	275	fun (foo, memory) -> 5
	276	; (foo, name ) -> foo
	277	; (foo, size ) -> 5
	278	; (37 , memory) -> 8
	279	; (37 , name ) -> bar
	280	; (37 , size ) -> 8
	281	end
	282	),
	283	meck:expect(beam_stats_source, erlang_processes,
697c496d	284	fun () -> [Pid1, Pid2, Pid3, Pid4] end),
7786d23b SK	285	meck:expect(beam_stats_source, os_timestamp,
	286	fun () -> {1, 2, 3} end),
	287	meck:expect(beam_stats_source, erlang_process_info,
	288	fun (P, K) when P == Pid1 ->
	289	case K
	290	of dictionary -> {K, []}
	291	; initial_call -> {K, {foo_mod, foo_fun, 2}}
	292	; registered_name -> {K, reg_name_foo}
	293	; status -> {K, running}
	294	; memory -> {K, 15}
	295	; total_heap_size -> {K, 25}
	296	; stack_size -> {K, 10}
	297	; message_queue_len -> {K, 0}
	298	end
	299	; (P, K) when P == Pid2 ->
	300	case K
	301	of dictionary -> {K, []}
	302	; initial_call -> {K, {bar_mod, bar_fun, 1}}
	303	; registered_name -> []
	304	; status -> {K, running}
	305	; memory -> {K, 25}
	306	; total_heap_size -> {K, 35}
	307	; stack_size -> {K, 40}
	308	; message_queue_len -> {K, 5}
	309	end
	310	; (P, K) when P == Pid3 ->
	311	Dict =
	312	[ {'$initial_call', {baz_otp_mod, baz_otp_fun, 2}}
	313	, {'$ancestors' , [Pid0, Pid1]}
	314	],
	315	case K
	316	of dictionary -> {K, Dict}
	317	; initial_call -> {K, {baz_mod, baz_fun, 3}}
	318	; registered_name -> []
	319	; status -> {K, running}
	320	; memory -> {K, 25}
	321	; total_heap_size -> {K, 35}
	322	; stack_size -> {K, 40}
	323	; message_queue_len -> {K, 1}
	324	end
697c496d SK	325	; (P, K) when P == Pid4 ->
	326	Dict =
	327	[ {'$initial_call', {baz_otp_mod, baz_otp_fun, 2}}
	328	, {'$ancestors' , [Pid0, Pid1]}
	329	],
	330	case K
	331	of dictionary -> {K, Dict}
	332	; initial_call -> {K, {baz_mod, baz_fun, 3}}
	333	; registered_name -> []
	334	; status -> {K, waiting}
	335	; memory -> {K, 5}
	336	; total_heap_size -> {K, 10}
	337	; stack_size -> {K, 15}
	338	; message_queue_len -> {K, 0}
	339	end
7786d23b SK	340	end
7786d23b SK	341	),
f4dcce84 SK	342	#beam_stats
	343	{ timestamp = {1, 2, 3}
	344	, node_id = 'node_foo@host_bar'
	345	, memory = [{mem_type_foo, 1}, {mem_type_bar, 2}, {mem_type_baz, 3}]
	346	, io_bytes_in = IOBytesIn
	347	, io_bytes_out = IOBytesOut
	348	, context_switches = ContextSwitches
	349	, reductions = 9
	350	, run_queue = 17
	351	, ets = [ETSTableStatsFoo, ETSTableStatsBar]
	352	, processes = Processes
	353	}.