cmd/tests: Add some tests for "choice".

programs/cmd/tests/test_builtins.cmd

@@ -527,6 +527,48 @@ rmdir "fol;der"
 rmdir folder
 PATH=%PATH_BACKUP%
 
+echo ------------ Testing 'choice' ------------
+
+rem Windows XP and Windows 2000 do not come with choice
+rem echo is used for @or_broken@ formatting
+choice /C:ABC /M "Example message" /D A /T:0
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+choice /C ABC "/M:Example message" /D:B /T 0
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+choice /C def /D:f /T:0
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+REM If a pipe fails due to a nonexistent command
+REM it will stop the whole program's execution
+if %ERRORLEVEL% NEQ 9009 (
+  echo Y | choice /C ABCXYZ /D A /T 2
+)
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+choice /C ABC /N /D A /T 0
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+choice /C abcABC /CS /D:A /T:0
+if %ERRORLEVEL% EQU 9009 (
+  echo choice unavailable
+)
+echo %ERRORLEVEL%
+rem intentional error
+choice /C abcABC /D:A /T:0 >NUL 2>NUL
+echo %ERRORLEVEL%
+
 echo ------------ Testing variable expansion ------------
 call :setError 0
 echo ~p0 should be path containing batch file

programs/cmd/tests/test_builtins.cmd.exp

@@ -479,6 +479,20 @@ foo
 I'm here!@space@
 I'm here!@space@
 I'm here!@space@
+------------ Testing 'choice' ------------
+@todo_wine@Example message [A,B,C]?A@or_broken@choice unavailable
+@todo_wine@1@or_broken@9009
+@todo_wine@Example message [A,B,C]?B@or_broken@choice unavailable
+@todo_wine@2@or_broken@9009
+@todo_wine@[D,E,F]?F@or_broken@choice unavailable
+@todo_wine@3@or_broken@9009
+@todo_wine@[A,B,C,X,Y,Z]?Y@or_broken@choice unavailable
+@todo_wine@5@or_broken@9009
+@todo_wine@A@or_broken@choice unavailable
+@todo_wine@1@or_broken@9009
+@todo_wine@[a,b,c,A,B,C]?A@or_broken@choice unavailable
+@todo_wine@4@or_broken@9009
+@todo_wine@255@or_broken@9009
 ------------ Testing variable expansion ------------
 ~p0 should be path containing batch file
 @path@