#!/bin/bash -

size=1G
sizemegabytes=1024
develdir=$HOME/d/libguestfs

for guestfish in "$develdir/run $develdir/fish/guestfish" /usr/bin/guestfish
do
    echo Making sure the appliance is cached before we run the test ...
    $guestfish -a /dev/null run
    $guestfish -a /dev/null run

    echo Sparse raw all zeroes test with "$guestfish" ...
    rm -f test.img test.qcow2
    truncate -s $size test.img
    du -sh test.img
    $guestfish -a test.img run : time zero-device /dev/sda
    du -sh test.img

    echo Non-sparse raw all zeroes test with "$guestfish" ...
    rm -f test.img test.qcow2
    dd if=/dev/zero of=test.img bs=1024k count=$sizemegabytes >/dev/null 2>&1
    du -sh test.img
    $guestfish -a test.img run : time zero-device /dev/sda
    du -sh test.img

    echo Non-sparse raw random data test with "$guestfish" ...
    rm -f test.img test.qcow2
    dd if=/dev/urandom of=test.img bs=1024k count=$sizemegabytes >/dev/null 2>&1
    du -sh test.img
    $guestfish -a test.img run : time zero-device /dev/sda
    du -sh test.img

    echo QCow2 no preallocation all zeroes test with "$guestfish" ...
    rm -f test.img test.qcow2
    qemu-img create -f qcow2 test.qcow2 $size >/dev/null
    du -sh test.qcow2
    $guestfish -a test.qcow2 run : time zero-device /dev/sda
    du -sh test.qcow2

    echo QCow2 with preallocation all zeroes test with "$guestfish" ...
    rm -f test.img test.qcow2
    qemu-img create -f qcow2 -o preallocation=metadata test.qcow2 $size >/dev/null
    du -sh test.qcow2
    $guestfish -a test.qcow2 run : time zero-device /dev/sda
    du -sh test.qcow2
done