From d1d3de0e7e929e2f6f7bb47bbc3d67434f97926d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Wed, 22 Sep 2010 14:26:51 +0200
Subject: Add tests for tail segments in binary generators

---
 lib/compiler/test/bs_bincomp_SUITE.erl | 38 +++++++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

(limited to 'lib/compiler/test')

diff --git a/lib/compiler/test/bs_bincomp_SUITE.erl b/lib/compiler/test/bs_bincomp_SUITE.erl
index a64a5d590b..74f69893af 100644
--- a/lib/compiler/test/bs_bincomp_SUITE.erl
+++ b/lib/compiler/test/bs_bincomp_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%% Copyright Ericsson AB 2006-2010. All Rights Reserved.
 %% 
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -24,7 +24,7 @@
 -export([all/1,
 	 byte_aligned/1,bit_aligned/1,extended_byte_aligned/1,
 	 extended_bit_aligned/1,mixed/1,filters/1,trim_coverage/1,
-	 nomatch/1,sizes/1]).
+	 nomatch/1,sizes/1,tail/1]).
 
 -include("test_server.hrl").
 
@@ -32,7 +32,7 @@ all(suite) ->
     test_lib:recompile(?MODULE),
     [byte_aligned,bit_aligned,extended_byte_aligned,
      extended_bit_aligned,mixed,filters,trim_coverage,
-     nomatch,sizes].
+     nomatch,sizes,tail].
 
 
 byte_aligned(Config) when is_list(Config) ->
@@ -270,6 +270,38 @@ sizes(Config) when is_list(Config) ->
     ?line cs_end(),
     ok.
 
+tail(Config) when is_list(Config) ->
+    ?line [] = tail_1(<<0:7>>),
+    ?line [0] = tail_1(<<0>>),
+    ?line [0] = tail_1(<<0:12>>),
+    ?line [0,0] = tail_1(<<0:20>>),
+
+    ?line [] = tail_2(<<0:7>>),
+    ?line [42] = tail_2(<<0>>),
+    ?line [] = tail_2(<<0:12>>),
+    ?line [42,42] = tail_2(<<0,1>>),
+
+    ?line <<>> = tail_3(<<0:7>>),
+    ?line <<42>> = tail_3(<<0>>),
+    ?line <<42>> = tail_3(<<0:12>>),
+    ?line <<42,42>> = tail_3(<<0:20>>),
+
+    ?line [] = tail_4(<<0:15>>),
+    ?line [7] = tail_4(<<7,8>>),
+    ?line [9] = tail_4(<<9,17:12>>),
+    ok.
+
+tail_1(Bits) ->
+    [X || <<X:8/integer, _/bits>> <= Bits].
+
+tail_2(Bits) ->
+    [42 || <<_:8/integer, _/bytes>> <= Bits].
+
+tail_3(Bits) ->
+    << <<42>> || <<_:8/integer, _/bits>> <= Bits >>.
+
+tail_4(Bits) ->
+    [X || <<X:8/integer, Tail/bits>> <= Bits, bit_size(Tail) >= 8].
 
 
 cs_init() ->
-- 
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