#!/bin/sh

add()
{
    echo $2 >> $1
}

hg init t
cd t

# set up a boring main branch
add a a
hg add a
hg ci -m0

add a m1
hg ci -m1

add a m2
hg ci -m2

show()
{
    echo "- $2: $1"
    hg st -C $1
    echo
    hg diff --git $1
    echo
}

count=0
# make a new branch and get diff/status output
# $1 - first commit
# $2 - second commit
# $3 - working dir action
# $4 - test description
tb()
{
    hg co -q -C 0

    add a $count
    count=`expr $count + 1`
    hg ci -m "t0"
    $1
    hg ci -m "t1"
    $2
    hg ci -m "t2"
    $3

    echo "** $4 **"
    echo "** $1 / $2 / $3"
    show "" "working to parent"
    show "--rev 0" "working to root"
    show "--rev 2" "working to branch"
    show "--rev 0 --rev ." "root to parent"
    show "--rev . --rev 0" "parent to root"
    show "--rev 2 --rev ." "branch to parent"
    show "--rev . --rev 2" "parent to branch"
    echo
}

tb "add a a1" "add a a2" "hg mv a b" "rename in working dir"
tb "add a a1" "add a a2" "hg cp a b" "copy in working dir" 
tb "hg mv a b" "add b b1" "add b w" "single rename"
tb "hg cp a b" "add b b1" "add a w" "single copy"
tb "hg mv a b" "hg mv b c" "hg mv c d" "rename chain"
tb "hg cp a b" "hg cp b c" "hg cp c d" "copy chain"
tb "add a a1" "hg mv a b" "hg mv b a" "circular rename"