setup

#!/bin/bash


function make_snapshot()
{
    mkdir /testsuite/.snapshots/$1
    btrfs subvolume snapshot -r /testsuite /testsuite/.snapshots/$1/snapshot
}


function test1()
{
    make_snapshot 1

    mkdir foo
    mkdir foo/bar
    echo hello > foo/bar/world

    make_snapshot 2

    rm foo -rf
}


function test2()
{
    make_snapshot 3

    mkdir a
    mkdir b
    echo hello > a/s
    echo hello > b/s
    echo world > a/n

    make_snapshot 4

    rm a b -rf
}


function test3()
{
    make_snapshot 5

    touch foo
    ln -s foo bar

    make_snapshot 6

    rm foo bar
}


function test4()
{
    touch foo bar
    ln -s foo fubar

    make_snapshot 7

    ln -sf bar fubar

    make_snapshot 8

    rm foo bar fubar
}


function test5()
{
    mkdir a
    mkdir b

    echo hello > a/same
    echo foo > a/diff
    echo new > a/new

    sleep 1

    echo hello > b/same
    echo bar > b/diff

    make_snapshot 9

    mv a t
    mv b a
    mv t b

    make_snapshot 10

    rm a b -rf
}


function test6()
{
    mkdir -p a1/a2/a3
    mkdir -p b1/b2

    echo hello > a1/a2/a3/same
    echo foo > a1/a2/a3/diff
    echo new > a1/a2/a3/new
    mkdir a1/a2/a3/d
    echo hello > a1/a2/a3/d/world

    sleep 1

    echo hello > b1/b2/same
    echo bar > b1/b2/diff

    make_snapshot 11

    mv a1/a2/a3 t
    mv b1/b2 a1/a2/a3
    mv t b1/b2

    make_snapshot 12

    rm a1 b1 -rf
}


function test7()
{
    touch perm user group

    make_snapshot 13

    chmod a+rw perm
    chown nobody user
    chown :nobody group

    make_snapshot 14

    rm perm user group
}


function test8()
{
    touch foo

    make_snapshot 15

    rm foo
    mkdir foo

    make_snapshot 16

    rmdir foo
}


btrfs subvolume create /testsuite
btrfs subvolume create /testsuite/.snapshots

cd /testsuite

test1
test2
test3
test4
test5
test6
test7
test8