Opportunity to choose the shell that runs the releng test scripts

releng/README

@@ -9,35 +9,37 @@ Copyright (C) 2011 George Danchev, Thomas Schmitt
 Provided under GPL version 2 or later.
 ------------------------------------------------------------------------------
 
-The impatient tester will build libisoburn according to ./README and then do
+The impatient tester will build libisoburn according to its README and then do
+
   cd ./releng
   ./run_all_auto -x ../xorriso/xorriso
 
 More patient testers will first read the following description.
 
+Those who simply lack the interpreter /bin/bash, may do
+  ./change_shell_to_use
+and then retry.
+
 
                             The test suite
 
-+++ introduce the test suite,
-
 Directory ./releng of libisoburn contains a collection of test scripts and
 auxiliary data. They exercise some typical use cases of building libisoburn
 applications and running the ISO 9660 filesystem manipulation and CD/DVD/BD
 burn program xorriso. 
 
-
-+++ inform about resource needs,
-
 It is assumed that libburn and libisofs are installed, so that libisoburn
 can be configured and built. It is not mandatory that libisoburn is already
 installed. The tests may use an installed xorriso program as well as a
 freshly built one.
 
->>> Do we really need to be glued to bash ?
+The test scripts explicitely demand /bin/bash as interpreter, although they
+would run on certain other shells too. If you get an error message like
+  ./run_all_auto: not found
+then consider to install /bin/bash.
+If you decide against that, see below "Alternative Shells".
 
 
-+++ auto and manual tests
-
 There are two groups of test scripts:
 
   auto_*    gets started and watched by script run_all_auto.
@@ -51,8 +53,6 @@ There are two groups of test scripts:
             and operate the mechanics of a CD drive.
 
 
-+++ tell how to run the tests,
-
                        Running automated tests
 
 The test scripts expect to get run while the working directory is
@@ -75,10 +75,6 @@ or if you want to use an installed xorriso program:
 resp.
   ./run_all_auto -x $(type -p xorriso)
 
-
-+++ General options -x , -k, -f, -c, -h, --
-+++ + All scripts support -h
-
 There are several options which work with run_all_auto and any single test.
   -x  absolute or relative path to xorriso binary to be run.
   -k  keep self-generated data.
@@ -92,8 +88,6 @@ particular manually executable test scripts.
 
                         Manually executable tests
                  
-+++ list of manual tests
-
 Currently there are the following tests which should have the attention of
 the user or require sysadmin considerations before they are run:
 
@@ -137,24 +131,29 @@ the user or require sysadmin considerations before they are run:
   as one single argument. On Solaris use: --priv_cmd pfexec
 
 
->>> ./run_all_manual
+Any auto_* script can be run on its own. Some of them demand option -x.
-
+All general options are accepted.
->>> + Any auto_* script can be run on its own, regardless.
->>> List auto tests
 
 ./auto_cxx
   Exercises inclusion of xorriso/xorriso.h and libisoburn/libisoburn.h
   in C++ programs and linking of the libraries. It might be necessary
   to set compiler options by shell variable CFLAGS before running the test.
-  E.g. if the include headers libisofs.h and libburn.h are not found:
+  E.g. if on FreeBSD the include headers libisofs.h , libburn.h are not found:
     export CFLAGS="-I/usr/local/include"
 
->>> ./auto_isocontent
+./auto_isocontent -x ../xorriso/xorriso
+  Tests whether xorriso is able to record and restore two familes of
+  hard links.
 
->>> ./auto_printsize
+./auto_printsize -x ../xorriso/xorriso
+  Tests how long xorriso needs to compose a medium sized directory tree.
+  If programs mkisofs and/or genisomage are availaible, then the same test
+  is done with them.
 
 
-+++ give hints what to do with FAIL results.
+----------------------------------------------------------------------------
+
+                       What to do with FAIL results
 
 The text output of the automatic tests is recorded in file
    releng_generated_data/log.run_all_auto
@@ -169,11 +168,29 @@ please contact mailing list libburn-hackers@pykix.org .
 
 ----------------------------------------------------------------------------
 
-                          Creating a new test script
+                          Alternative Shells
 
-+++ * DELIVERING A NEW TEST SCRIPT
+If you decided against installing /bin/bash, you may try to use your
-+++ + Start a new test script over the top of template_new_releng
+current $SHELL by running
-+++ + Each completed script starts with auto_ or manual_ prefix
+  ./change_shell_to_use
+which will modify the test scripts named run_all_auto , auto_* ,manual_*.
+
+Known to be suitable are the following shells
+  GNU/Linux: /bin/bash
+  FreeBSD 8: /bin/sh
+  Solaris:   /bin/bash , /bin/i86/ksh93
+
+The script does not choose an interpreter explicitely and is safe to be run
+inline:
+  . ./change_shell_to_use
+One may set any interpreter path by runnung a sub shell and changing its
+variable SHELL. E.g. by:
+  ( SHELL=/bin/my_shell" ; . ./change_shell_to_use )
+
+
+----------------------------------------------------------------------------
+
+                          Creating a new test script
 
 If you want to provide an own test, manual or auto, then first invent a name
 for it
@@ -185,19 +202,12 @@ Edit $test_name and process any line that begins by "# === TEMPLATE:".
 Do what the line prescribes and then remove it from the script. You are
 not done as long as such a line remains.
 
-+++ + Each script' self-generated data are to be stored in
-+++   ./releng_generated_data/scriptname/ directory
-
 Your test must not start if no file
    ./inc/releng_getopts.inc
 exists, i.e. if the current working direcoty is not ./releng.
 If your test creates own files on disk, then it must do this underneath
 directory ./releng_generated_data/$test_name (resp. $GEN_DATA_DIR, see below).
 
-+++ + Throw FAIL string to stdout if any failure is detected
-+++ + Return exit code 0 on success, non-zero on failure
-+++ + Use different exit codes for any failure (range 0-31)
-
 In case of failure, issue a line to stdout that begins by the word "FAIL",
 followed by " : " and the name of the test (e.g. $SELF, see below).
 Make sure that the test script finally returns a non-zero exit value.
@@ -211,9 +221,7 @@ Predefined are:
 When exiting prematurely, make sure to call function cleanup.
 
 
-                 General options, variables, and functions
+               Variables, general options, helper functions
-
-+++ inc/releng_getopts.inc variables, functions, initializations
 
 The code piece inc/releng_getopts.inc should get executed inline at the
 start of a test script.
@@ -256,9 +264,7 @@ for use by the single tests:
   unboldify         Reset terminal mode to normal style of writing.
 
 
-                        Specific options
+                             Specific options
-
-+++ + Keep the newly added script options in sync with other scripts
 
 Options which are specific to the test should begin with a double dash.
 They may have further arguments.
@@ -275,16 +281,13 @@ please re-use the name of that existing option.
 TODO:
 
 
-* Delete debian-testing-i386-businesscard.iso with ./run_all_auto -c
+* ??? Delete debian-testing-i386-businesscard.iso with ./run_all_auto -c
 
-* Have a script ./run_all_manual
+* ??? Have a script ./run_all_manual
 
 * derive a GNU xorriso test suite from libisoburn test suite
 
 * auto_ tests should know whether they work underneath run_all_auto
   or whether they run standalone
 
-* Port releng to FreeBSD.
-  - Make it run with /bin/sh . Remove all bashisms and GNU gimmicks.
-
 

releng/change_shell_to_use

@@ -0,0 +1,39 @@
+
+# check whether we are in releng and eventually create dir
+mkdir_ret=29
+if test -d releng_generated_data
+then
+  if test -d releng_generated_data/change_shell_to_use
+  then
+    mkdir_ret=0
+  else
+    mkdir releng_generated_data/change_shell_to_use
+    mkdir_ret=$?
+  fi
+fi
+
+if test "$mkdir_ret" = 0
+then
+  for i in run_all_auto auto_* manual_*
+  do
+    temp=releng_generated_data/change_shell_to_use/temp_file
+    c=$(wc -l "$i" | awk '{print $1}')
+    line=$(head -n 1 "$i")
+
+    if echo x"$line" | grep '^x#!' >/dev/null 2>&1
+    then
+      cp "$i" "$temp"
+      echo '#!'"$SHELL" > "$temp"
+      tail -n "$(expr $c - 1)" "$i" >> "$temp"
+      mv "$temp" "$i"
+      echo "Changed to #!$SHELL : $i"
+    fi
+  done
+  rmdir releng_generated_data/change_shell_to_use
+else
+  echo "change_shell_to_use: Missing directory ./releng_generated_data" >&2
+  echo "or cannot create directory ./releng_generated_data/change_shell_to_use" >&2
+  echo "change_shell_to_use: Run aborted"
+  test 1 = 0
+fi
+