Add multi-shell test harness to run on each distro

More eventually should be done with this but the basic operation of changing
/bin/sh, running the tests, and making it so the test results can be parsed is
there.  Adds shell installation instructions to provision process.

README.md

@@ -392,6 +392,11 @@ Clone the repo as above.  To run the tests (written in `ts`):
 
     ts test/suite
 
+To run the tests on various distros:
+
+    vagrant up
+    ./test/vm
+
 To generate the manpages:
 
     make manpages

Vagrantfile

@@ -7,21 +7,26 @@ VAGRANTFILE_API_VERSION = "2"
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.vm.define :ubuntu do |config|
     config.vm.box = "ubuntu/trusty64"
+    config.vm.provision :shell, :path => "vm/ubuntu.sh"
   end
 
   config.vm.define :centos do |config|
     config.vm.box = "chef/centos-6.5"
+    config.vm.provision :shell, :path => "vm/centos.sh"
   end
 
   config.vm.define :debian do |config|
     config.vm.box = "chef/debian-7.4"
+    config.vm.provision :shell, :path => "vm/debian.sh"
   end
 
   config.vm.define :opensuse do |config|
     config.vm.box = "chef/opensuse-13.1"
+    config.vm.provision :shell, :path => "vm/opensuse.sh"
   end
 
   config.vm.define :fedora do |config|
     config.vm.box = "chef/fedora-20"
+    config.vm.provision :shell, :path => "vm/fedora.sh"
   end
 end

test/shells

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+if [ $# -eq 0 ]
+then set bash dash zsh csh ksh
+fi
+
+#############################################################################
+target_shell () {
+  ls -la $1 | awk '{ print $NF }'
+}
+
+if ! [ -e /bin/sh.bak ]
+then sudo ln -sf $(target_shell /bin/sh) /bin/sh.bak
+fi
+
+for shell in "$@"
+do
+  echo $shell
+  if [ -e /bin/$shell ]
+  then
+    sudo ln -sf $shell /bin/sh
+    ./test/suite 2>&1 | sed -e 's/^/  /'
+  else
+    printf "  skip\n"
+  fi
+done
+
+sudo ln -sf $(target_shell /bin/sh.bak) /bin/sh

test/vm

@@ -3,5 +3,5 @@
 for box in $(vagrant status | awk '/running/ { print $1 }')
 do
   printf "%s\n" "$box"
-  vagrant ssh $box -c 'cd /vagrant; ./test/suite' 2>&1 | sed -e 's/^/  /'
+  vagrant ssh $box -c 'cd /vagrant; ./test/shells' 2>&1 | sed -e 's/^/  /'
 done

vm/centos.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+sudo yum install -y bash zsh csh ksh

vm/debian.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+sudo apt-get install -y bash zsh csh ksh

vm/fedora.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+sudo yum install -y bash zsh csh ksh

vm/opensuse.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+sudo zypper install -y bash zsh ksh

vm/ubuntu.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+sudo apt-get install -y bash zsh csh ksh