Start tests to ensure consistent output across implementations

tests/output.bats

@@ -0,0 +1,116 @@
+#! /usr/bin/env bats
+
+# This is a test file for use with the bats testing framework
+# https://github.com/bats-core/bats-core
+# On Debian: apt install bats
+
+# output.bats tests that output is uniform across forgebuild implementations,
+# by using the special value "NONE" as LANG environment variable when calling
+# forgebuild.
+
+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
+   
+    # Setup settings
+    mkdir $FORGEBUILDDIR/config
+    echo "default" > $FORGEBUILDDIR/config/entry
+    mkdir $FORGEBUILDDIR/$HOSTNAME
+    echo "host" > $FORGEBUILDDIR/$HOSTNAME/entry
+
+    # Disable translations
+    export LANG="NONE"
+}
+
+function teardown {
+    cd $ORIGDIR
+    clean
+}
+
+function clean {
+    if [ -d $TMPDIR ]; then rm -rf $TMPDIR; fi
+}
+
+# Emulate translation, without actual escape codes (colors),
+# variable substitution, or actual translations
+warn() {
+    echo "warning${1}"
+}
+
+info() {
+    if [[ "$LOG" = "info" ]] || [[ "$LOG" = "debug" ]] || [[ "$LOG" = "" ]]; then
+        echo "[git-build] ${1}"
+    fi
+}
+
+debug() {
+    [[ "$LOG" = "debug" ]] && echo "debug${1}"
+}
+
+error() {
+    echo "error${1}"
+}
+
+# Simple repository
+
+@test "missing basedir" {
+    run $FORGEBUILD -b /tmp/THISPATHDOESNOTEXIST
+    [ "$output" = "$(error missing_basedir)" ]
+}
+
+@test "unknown task" {
+    run $FORGEBUILD -b $FORGEBUILDDIR THISTASKDOESNOTEXIST
+    [ "$output" = "$(error unknown_arg)" ]
+}
+
+@test "unknown argument" {
+    run $FORGEBUILD -WTF -b $FORGEBUILDDIR
+    [ "$output" = "$(error unknown_arg)" ]
+}
+
+@test "clone failed" {
+    echo "/tmp/THISPATHDOESNOTEXIST" > $FORGEBUILDDIR/time.source
+    run $FORGEBUILD -b $FORGEBUILDDIR time
+    [ "${lines[0]}" = "$(info config)" ]
+    [ "${lines[1]}" = "$(info process)" ]
+    [ "${lines[2]}" = "$(info clone)" ]
+    [ "${lines[3]}" = "$(error clone_failed)" ]
+}
+
+@test "simple sourceless run" {
+    run $FORGEBUILD -b $FORGEBUILDDIR time
+    [ "${lines[0]}" = "$(info config)" ]
+    [ "${lines[1]}" = "$(info process)" ]
+    [ "${lines[2]}" = "$(info run)" ]
+}
+
+@test "no tasks requested" {
+    run $FORGEBUILD -b $FORGEBUILDDIR
+    [ "${lines[0]}" = "$(info no_task)" ]
+    [ "${lines[1]}" = "$(info config)" ]
+    [ "${lines[2]}" = "$(info process)" ]
+    [ "${lines[3]}" = "$(info run)" ]
+    [ "${lines[4]}" = "$(info process)" ]
+    [ "${lines[5]}" = "$(info run)" ]
+}
+
+@test "no tasks exist" {
+    rm -r $FORGEBUILDDIR/*
+    run $FORGEBUILD -b $FORGEBUILDDIR
+    echo $output
+    [ "${lines[0]}" = "$(info no_task)" ]
+    [ "${lines[1]}" = "$(info config)" ]
+    # TODO: maybe introduce a "nothing to do" message here?
+}