#!/bin/bash

# With this script, we create a timestamps file for a single file, change it, and test whether the change is detected.

# setup
mkdir -p a
rm -f a/.file-timestamps
echo content1 > a/file

# Create the initial timestamp file.  This is not really what we're trying to scrutinize with this test.
if ! output=$(../../../file-timestamps --generate a)
then
    echo "$0: file-timestamps failed" 1>&2
    echo "$output" 1>&2
    exit 1
fi

case "$output" in
    equal)
        # Good; there was no preexisting timestamps file, so this should be equal
        ;;
    unequal)
        echo "Bad: there was no preexisting timestamps file, so this should have been equal" 1>&2
        exit 1
        ;;
    *)
        echo "Bad: strange output found:" 1>&2
        echo "$output" 1>&2
        exit 1
        ;;
esac

# Change the file
echo content2 > a/file

if ! output=$(../../../file-timestamps --generate a)
then
    echo "$0: file-timestamps failed" 1>&2
    echo "$output" 1>&2
    exit 1
fi

case "$output" in
    unequal)
        # Good; the change was detected.
        exit 0
        ;;
    equal)
        echo "Bad: change not detected" 1>&2
        exit 1
        ;;
    *)
        echo "Bad: strange output found:" 1>&2
        echo "$output" 1>&2
        exit 1
        ;;
esac