t/t0052-simple-ipc.sh

   1 #!/bin/sh
   2
   3 test_description='simple command server'
   4
   5 . ./test-lib.sh
   6
   7 test-tool simple-ipc SUPPORTS_SIMPLE_IPC || {
   8         skip_all='simple IPC not supported on this platform'
   9         test_done
  10 }
  11
  12 stop_simple_IPC_server () {
  13         test-tool simple-ipc stop-daemon
  14 }
  15
  16 test_expect_success 'start simple command server' '
  17         test_atexit stop_simple_IPC_server &&
  18         test-tool simple-ipc start-daemon --threads=8 &&
  19         test-tool simple-ipc is-active
  20 '
  21
  22 test_expect_success 'simple command server' '
  23         test-tool simple-ipc send --token=ping >actual &&
  24         echo pong >expect &&
  25         test_cmp expect actual
  26 '
  27
  28 test_expect_success 'servers cannot share the same path' '
  29         test_must_fail test-tool simple-ipc run-daemon &&
  30         test-tool simple-ipc is-active
  31 '
  32
  33 test_expect_success 'big response' '
  34         test-tool simple-ipc send --token=big >actual &&
  35         test_line_count -ge 10000 actual &&
  36         grep -q "big: [0]*9999\$" actual
  37 '
  38
  39 test_expect_success 'chunk response' '
  40         test-tool simple-ipc send --token=chunk >actual &&
  41         test_line_count -ge 10000 actual &&
  42         grep -q "big: [0]*9999\$" actual
  43 '
  44
  45 test_expect_success 'slow response' '
  46         test-tool simple-ipc send --token=slow >actual &&
  47         test_line_count -ge 100 actual &&
  48         grep -q "big: [0]*99\$" actual
  49 '
  50
  51 # Send an IPC with n=100,000 bytes of ballast.  This should be large enough
  52 # to force both the kernel and the pkt-line layer to chunk the message to the
  53 # daemon and for the daemon to receive it in chunks.
  54 #
  55 test_expect_success 'sendbytes' '
  56         test-tool simple-ipc sendbytes --bytecount=100000 --byte=A >actual &&
  57         grep "sent:A00100000 rcvd:A00100000" actual
  58 '
  59
  60 # Start a series of <threads> client threads that each make <batchsize>
  61 # IPC requests to the server.  Each (<threads> * <batchsize>) request
  62 # will open a new connection to the server and randomly bind to a server
  63 # thread.  Each client thread exits after completing its batch.  So the
  64 # total number of live client threads will be smaller than the total.
  65 # Each request will send a message containing at least <bytecount> bytes
  66 # of ballast.  (Responses are small.)
  67 #
  68 # The purpose here is to test threading in the server and responding to
  69 # many concurrent client requests (regardless of whether they come from
  70 # 1 client process or many).  And to test that the server side of the
  71 # named pipe/socket is stable.  (On Windows this means that the server
  72 # pipe is properly recycled.)
  73 #
  74 # On Windows it also lets us adjust the connection timeout in the
  75 # `ipc_client_send_command()`.
  76 #
  77 # Note it is easy to drive the system into failure by requesting an
  78 # insane number of threads on client or server and/or increasing the
  79 # per-thread batchsize or the per-request bytecount (ballast).
  80 # On Windows these failures look like "pipe is busy" errors.
  81 # So I've chosen fairly conservative values for now.
  82 #
  83 # We expect output of the form "sent:<letter><length> ..."
  84 # With terms (7, 19, 13) we expect:
  85 #   <letter> in [A-G]
  86 #   <length> in [19+0 .. 19+(13-1)]
  87 # and (7 * 13) successful responses.
  88 #
  89 test_expect_success 'stress test threads' '
  90         test-tool simple-ipc multiple \
  91                 --threads=7 \
  92                 --bytecount=19 \
  93                 --batchsize=13 \
  94                 >actual &&
  95         test_line_count = 92 actual &&
  96         grep "good 91" actual &&
  97         grep "sent:A" <actual >actual_a &&
  98         cat >expect_a <<-EOF &&
  99                 sent:A00000019 rcvd:A00000019
 100                 sent:A00000020 rcvd:A00000020
 101                 sent:A00000021 rcvd:A00000021
 102                 sent:A00000022 rcvd:A00000022
 103                 sent:A00000023 rcvd:A00000023
 104                 sent:A00000024 rcvd:A00000024
 105                 sent:A00000025 rcvd:A00000025
 106                 sent:A00000026 rcvd:A00000026
 107                 sent:A00000027 rcvd:A00000027
 108                 sent:A00000028 rcvd:A00000028
 109                 sent:A00000029 rcvd:A00000029
 110                 sent:A00000030 rcvd:A00000030
 111                 sent:A00000031 rcvd:A00000031
 112         EOF
 113         test_cmp expect_a actual_a
 114 '
 115
 116 test_expect_success 'stop-daemon works' '
 117         test-tool simple-ipc stop-daemon &&
 118         test_must_fail test-tool simple-ipc is-active &&
 119         test_must_fail test-tool simple-ipc send --token=ping
 120 '
 121
 122 test_done