Test suites for Dialyzer

This is a transcription of most of the cvs.srv.it.uu.se:/hipe repository
dialyzer_tests into test suites that use the test server framework.

See README for information on how to use the included scripts for
modifications and updates.

When testing Dialyzer it's important that several OTP modules
are included in the plt. The suites takes care of that too.

1 files changed, 195 insertions, 0 deletions

diff --git a/lib/dialyzer/test/r9c_tests_SUITE_data/src/mnesia/mnesia_backup.erl b/lib/dialyzer/test/r9c_tests_SUITE_data/src/mnesia/mnesia_backup.erl
new file mode 100644
index 0000000000..a1fbb21d94
--- /dev/null
+++ b/lib/dialyzer/test/r9c_tests_SUITE_data/src/mnesia/mnesia_backup.erl
@@ -0,0 +1,195 @@
+%% ``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
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%% 
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%% 
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%% 
+%%     $Id: mnesia_backup.erl,v 1.1 2008/12/17 09:53:37 mikpe Exp $
+%%
+%0
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%
+%% This module contains one implementation of callback functions
+%% used by Mnesia at backup and restore. The user may however
+%% write an own module the same interface as mnesia_backup and
+%% configure Mnesia so the alternate module performs the actual
+%% accesses to the backup media. This means that the user may put
+%% the backup on medias that Mnesia does not know about, possibly
+%% on hosts where Erlang is not running.
+%%
+%% The OpaqueData argument is never interpreted by other parts of
+%% Mnesia. It is the property of this module. Alternate implementations
+%% of this module may have different interpretations of OpaqueData.
+%% The OpaqueData argument given to open_write/1 and open_read/1
+%% are forwarded directly from the user.
+%%
+%% All functions must return {ok, NewOpaqueData} or {error, Reason}.
+%%
+%% The NewOpaqueData arguments returned by backup callback functions will
+%% be given as input when the next backup callback function is invoked.
+%% If any return value does not match {ok, _} the backup will be aborted.
+%%
+%% The NewOpaqueData arguments returned by restore callback functions will
+%% be given as input when the next restore callback function is invoked
+%% If any return value does not match {ok, _} the restore will be aborted.
+%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+-module(mnesia_backup).
+-behaviour(mnesia_backup).
+
+-include_lib("kernel/include/file.hrl").
+
+-export([
+	 %% Write access
+         open_write/1, 
+	 write/2, 
+	 commit_write/1, 
+	 abort_write/1,
+
+	 %% Read access
+         open_read/1, 
+	 read/1, 
+	 close_read/1
+        ]).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Backup callback interface
+-record(backup, {tmp_file, file, file_desc}).
+
+%% Opens backup media for write
+%%
+%% Returns {ok, OpaqueData} or {error, Reason}
+open_write(OpaqueData) ->
+    File = OpaqueData,
+    Tmp = lists:concat([File,".BUPTMP"]),
+    file:delete(Tmp),
+    file:delete(File),
+    case disk_log:open([{name, make_ref()},
+			{file, Tmp},
+			{repair, false},
+			{linkto, self()}]) of
+	{ok, Fd} ->
+	    {ok, #backup{tmp_file = Tmp, file = File, file_desc = Fd}};
+	{error, Reason} ->
+	    {error, Reason}
+    end.
+
+%% Writes BackupItems to the backup media
+%%
+%% Returns {ok, OpaqueData} or {error, Reason}
+write(OpaqueData, BackupItems) ->
+    B = OpaqueData,
+    case disk_log:log_terms(B#backup.file_desc, BackupItems) of
+        ok ->
+            {ok, B};
+        {error, Reason} ->
+            abort_write(B),
+            {error, Reason}
+    end.
+
+%% Closes the backup media after a successful backup
+%%
+%% Returns {ok, ReturnValueToUser} or {error, Reason}
+commit_write(OpaqueData) ->
+    B = OpaqueData,
+    case disk_log:sync(B#backup.file_desc) of
+        ok ->
+            case disk_log:close(B#backup.file_desc) of
+                ok ->
+		    case file:rename(B#backup.tmp_file, B#backup.file) of
+		       ok ->
+			    {ok, B#backup.file};
+		       {error, Reason} ->
+			    {error, Reason}
+		    end;
+                {error, Reason} ->
+		    {error, Reason}
+            end;
+        {error, Reason} ->
+            {error, Reason}
+    end.
+
+%% Closes the backup media after an interrupted backup
+%%
+%% Returns {ok, ReturnValueToUser} or {error, Reason}
+abort_write(BackupRef) ->
+    Res = disk_log:close(BackupRef#backup.file_desc),
+    file:delete(BackupRef#backup.tmp_file),
+    case Res of
+        ok ->
+            {ok, BackupRef#backup.file};
+        {error, Reason} ->
+            {error, Reason}
+    end.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Restore callback interface
+
+-record(restore, {file, file_desc, cont}).
+
+%% Opens backup media for read
+%%
+%% Returns {ok, OpaqueData} or {error, Reason}
+open_read(OpaqueData) ->
+    File = OpaqueData,
+    case file:read_file_info(File) of
+	{error, Reason} ->
+	    {error, Reason};
+	_FileInfo -> %% file exists
+	    case disk_log:open([{file, File},
+				{name, make_ref()},
+				{repair, false},
+				{mode, read_only},
+				{linkto, self()}]) of
+		{ok, Fd} ->
+		    {ok, #restore{file = File, file_desc = Fd, cont = start}};
+		{repaired, Fd, _, {badbytes, 0}} ->
+		    {ok, #restore{file = File, file_desc = Fd, cont = start}};
+		{repaired, Fd, _, _} ->
+		    {ok, #restore{file = File, file_desc = Fd, cont = start}};
+		{error, Reason} ->
+		    {error, Reason}
+	    end
+    end.
+
+%% Reads BackupItems from the backup media
+%%
+%% Returns {ok, OpaqueData, BackupItems} or {error, Reason}
+%%
+%% BackupItems == [] is interpreted as eof
+read(OpaqueData) ->
+    R = OpaqueData,
+    Fd = R#restore.file_desc,
+    case disk_log:chunk(Fd, R#restore.cont) of
+        {error, Reason} ->
+            {error, {"Possibly truncated", Reason}};
+        eof ->
+            {ok, R, []};
+        {Cont, []} ->
+            read(R#restore{cont = Cont});
+        {Cont, BackupItems} ->
+            {ok, R#restore{cont = Cont}, BackupItems}
+    end.
+
+%% Closes the backup media after restore
+%%
+%% Returns {ok, ReturnValueToUser} or {error, Reason}
+close_read(OpaqueData) ->
+    R = OpaqueData,
+    case disk_log:close(R#restore.file_desc) of
+        ok -> {ok, R#restore.file};
+        {error, Reason} -> {error, Reason}
+    end.
+%0
+