#! /usr/bin/env bats

# 21-task-env.bats
# In here, we ensure that the environment variables passed to the task,
# as well as its working directory, are as expected. A task should have:
#   $FORGEBUILDDIR: the basedir for the current tests
#   $FORGEBUILD: the current implementation of forgebuild running
# Also, a task's should by default have the basedir as working directory.
# This is not true for tasks with a source, and corresponding tests
# are located in specific DVCS tests. 
# Additionally, tasks may receive a $FORGEBUILDCONF variable, which is
# described and tested for in 20-host-config.bats.
# Finally, we ensure running a task does not have the unintended
# consequence of changing the current working directory.

function setup {
    ORIGDIR="$(pwd)"
    TMPDIR="$(mktemp -d)"

    # If no $FORGEBUILD is supplied in ENV, use the default
    # (otherwise you can't `bats ./tests/` manually)
    [ -z "$FORGEBUILD" ] && FORGEBUILD="forgebuild"

    # Setup forgebuild tasks
    FORGEBUILDDIR="$TMPDIR"/forgebuild
    mkdir $FORGEBUILDDIR
    echo "date +%s%N > $TMPDIR/forgebuild-time" > $FORGEBUILDDIR/time
    chmod +x $FORGEBUILDDIR/time
    echo "echo \$(pwd) > $TMPDIR/forgebuild-pwd" > $FORGEBUILDDIR/pwd
    chmod +x $FORGEBUILDDIR/pwd
}

function teardown {
    cd $ORIGDIR
    if [ -d $TMPDIR ]; then rm -rf $TMPDIR; fi
}

@test "sourceless task working dir is FORGEBUILDDIR" {
    $FORGEBUILD -b $FORGEBUILDDIR pwd
    PWD="$(cat $TMPDIR/forgebuild-pwd)"
    cp $TMPDIR/forgebuild-pwd{,-2}
    [[ "$PWD" = "$FORGEBUILDDIR" ]]
}

@test "after running, back to the previous working dir" {
    cd /tmp
    $FORGEBUILD -b $FORGEBUILDDIR pwd
    [[ "$(pwd)" = "/tmp" ]]
}