#!/bin/bash
# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Automated tests for https://fuchsia.googlesource.com/fargo/
#
# Usage: fargo-test
#
#   Returns: Error status if the build isn't properly configured for
#   fargo testing or if the test fails.

bail()
{
	echo "$1" 1>&2
	exit 1
}

# pull in the standard fx shell variables
source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/../../tools/devshell/lib/vars.sh || exit $?

# use the fx script from this tree, don't rely on PATH
FX="$FUCHSIA_DIR/scripts/fx"

# use the prebuilt fargo
FARGO="$PREBUILT_3P_DIR/fargo/$HOST_PLATFORM/fargo"
if [[ ! -f "$FARGO" ]]
then
    bail "Error: can't find prebuilt fargo at $FARGO"
fi

# make sure the build is configured with a Carnelian sample
"$FX" list-packages | grep "spinning-square-rs"  >/dev/null 2>&1 || bail "Error: Could not find \
the spinning square example in the package list. Please make sure you have '--with //src/lib/ui/\
carnelian:examples' in your 'fx set'"

# Use gen-cargo to create a link in the current directory to the current directory
"$FX" gen-cargo //src/lib/ui/carnelian || bail "Error: could not use fx gen-cargo"

# Set the current directory to Carnelian
cd "$FUCHSIA_DIR/src/lib/ui/carnelian" || bail "Error: could not set the current directory to carnelian"

# Run fargo check, which is quick and if it works there's a good chance the rest of fargo will work
"$FARGO" check --example spinning_square || bail "Error: fargo check failed"