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   19: 
   20: -module(bs_match_tail_SUITE).
   21: 
   22: -author('bjorn@erix.ericsson.se').
   23: -export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2,
   24: 	 init_per_testcase/2,end_per_testcase/2,
   25: 	 init_per_suite/1,end_per_suite/1,
   26: 	 aligned/1,unaligned/1,zero_tail/1]).
   27: 
   28: -include_lib("test_server/include/test_server.hrl").
   29: 
   30: suite() -> [{ct_hooks,[ts_install_cth]}].
   31: 
   32: all() -> 
   33:     cases().
   34: 
   35: groups() -> 
   36:     [].
   37: 
   38: init_per_group(_GroupName, Config) ->
   39:     Config.
   40: 
   41: end_per_group(_GroupName, Config) ->
   42:     Config.
   43: 
   44: 
   45: cases() -> 
   46:     [aligned, unaligned, zero_tail].
   47: 
   48: init_per_testcase(_Case, Config) ->
   49:     test_lib:interpret(?MODULE),
   50:     Dog = test_server:timetrap(?t:minutes(1)),
   51:     [{watchdog,Dog}|Config].
   52: 
   53: end_per_testcase(_Case, Config) ->
   54:     Dog = ?config(watchdog, Config),
   55:     ?t:timetrap_cancel(Dog),
   56:     ok.
   57: 
   58: init_per_suite(Config) when is_list(Config) ->
   59:     ?line test_lib:interpret(?MODULE),
   60:     ?line true = lists:member(?MODULE, int:interpreted()),
   61:     Config.
   62: 
   63: end_per_suite(Config) when is_list(Config) ->
   64:     ok.
   65: 
   66: aligned(doc) -> "Test aligned tails.";
   67: aligned(Config) when is_list(Config) ->
   68:     ?line Tail1 = mkbin([]),
   69:     ?line {258,Tail1} = al_get_tail_used(mkbin([1,2])),
   70:     ?line Tail2 = mkbin(lists:seq(1, 127)),
   71:     ?line {35091,Tail2} = al_get_tail_used(mkbin([137,19|Tail2])),
   72: 
   73:     ?line 64896 = al_get_tail_unused(mkbin([253,128])),
   74:     ?line 64895 = al_get_tail_unused(mkbin([253,127|lists:seq(42, 255)])),
   75: 
   76:     ?line Tail3 = mkbin(lists:seq(0, 19)),
   77:     ?line {0,Tail1} = get_dyn_tail_used(Tail1, 0),
   78:     ?line {0,Tail3} = get_dyn_tail_used(mkbin([Tail3]), 0),
   79:     ?line {73,Tail3} = get_dyn_tail_used(mkbin([73|Tail3]), 8),
   80: 
   81:     ?line 0 = get_dyn_tail_unused(mkbin([]), 0),
   82:     ?line 233 = get_dyn_tail_unused(mkbin([233]), 8),
   83:     ?line 23 = get_dyn_tail_unused(mkbin([23,22,2]), 8),
   84:     ok.
   85: 
   86: al_get_tail_used(<<A:16,T/binary>>) -> {A,T}.
   87: al_get_tail_unused(<<A:16,_/binary>>) -> A.
   88: 
   89: unaligned(doc) -> "Test that an non-aligned tail cannot be matched out.";
   90: unaligned(Config) when is_list(Config) ->
   91:     ?line {'EXIT',{function_clause,_}} = (catch get_tail_used(mkbin([42]))),
   92:     ?line {'EXIT',{{badmatch,_},_}} = (catch get_dyn_tail_used(mkbin([137]), 3)),
   93:     ?line {'EXIT',{function_clause,_}} = (catch get_tail_unused(mkbin([42,33]))),
   94:     ?line {'EXIT',{{badmatch,_},_}} = (catch get_dyn_tail_unused(mkbin([44]), 7)),
   95:     ok.
   96: 
   97: get_tail_used(<<A:1,T/binary>>) -> {A,T}.
   98: 
   99: get_tail_unused(<<A:15,_/binary>>) -> A.
  100: 
  101: get_dyn_tail_used(Bin, Sz) ->
  102:     <<A:Sz,T/binary>> = Bin,
  103:     {A,T}.
  104: 
  105: get_dyn_tail_unused(Bin, Sz) ->
  106:     <<A:Sz,_/binary>> = Bin,
  107:     A.
  108: 
  109: zero_tail(doc) -> "Test that zero tails are tested correctly.";
  110: zero_tail(Config) when is_list(Config) ->
  111:     ?line 7 = (catch test_zero_tail(mkbin([7]))),
  112:     ?line {'EXIT',{function_clause,_}} = (catch test_zero_tail(mkbin([1,2]))),
  113:     ?line {'EXIT',{function_clause,_}} = (catch test_zero_tail2(mkbin([1,2,3]))),
  114:     ok.
  115: 
  116: test_zero_tail(<<A:8>>) -> A.
  117: 
  118: test_zero_tail2(<<_A:4,_B:4>>) -> ok.
  119: 
  120: mkbin(L) when is_list(L) -> list_to_binary(L).