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#!/usr/bin/env bash
# Test that running save more than once with no other changes produces
# the exact same tree.
# Note: we can't compare the top-level hash (i.e. the output of "save
# -t" because that currently pulls the metadata for unindexed parent
# directories directly from the filesystem, and the relevant atimes
# may change between runs. So instead we extract the roots of the
# indexed trees for comparison via t/subtree-hash.
. ./wvtest-bup.sh || exit $?
set -o pipefail
WVSTART 'all'
top="$(pwd)"
tmpdir="$(WVPASS wvmktempdir)" || exit $?
export BUP_DIR="$tmpdir/bup"
export GIT_DIR="$BUP_DIR"
bup() { "$top/bup" "$@"; }
WVPASS mkdir -p "$tmpdir/src"
WVPASS mkdir -p "$tmpdir/src/d"
WVPASS mkdir -p "$tmpdir/src/d/e"
WVPASS touch "$tmpdir/src/"{f,b,a,d}
WVPASS touch "$tmpdir/src/d/z"
WVPASS bup init
WVPASS bup index -u "$tmpdir/src"
declare -a indexed_top
IFS=/
indexed_top="${tmpdir##/}"
indexed_top=(${indexed_top%%/})
unset IFS
tree1=$(WVPASS bup save -t "$tmpdir/src") || exit $?
indexed_tree1="$(WVPASS t/subtree-hash "$tree1" "${indexed_top[@]}" src)" \
|| exit $?
result="$(WVPASS cd "$tmpdir/src"; WVPASS bup index -m)" || exit $?
WVPASSEQ "$result" ""
tree2=$(WVPASS bup save -t "$tmpdir/src") || exit $?
indexed_tree2="$(WVPASS t/subtree-hash "$tree2" "${indexed_top[@]}" src)" \
|| exit $?
WVPASSEQ "$indexed_tree1" "$indexed_tree2"
result="$(WVPASS bup index -s / | WVFAIL grep ^D)" || exit $?
WVPASSEQ "$result" ""
tree3=$(WVPASS bup save -t /) || exit $?
indexed_tree3="$(WVPASS t/subtree-hash "$tree3" "${indexed_top[@]}" src)" || exit $?
WVPASSEQ "$indexed_tree1" "$indexed_tree3"
WVPASS rm -rf "$tmpdir"
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