#!/bin/bash
# Copyright 2018 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.

### build and run tests on host

##
## Usage: fx run-host-tests [-z] [host test names ...] [-- [test runner flags]]
## Builds and runs the given host tests.
## With "-z" passed, only Zircon tests will be run - and
## without it only tests from Garnet and above.
## If no host test names are provided, then all available
## host tests will be run.
## Test runner flags can typically be --gtest_filter=TestSuiteName.TestName
## to restrict to a particular test or set of tests.
##

set -o errexit
set -o pipefail

source "$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"/lib/vars.sh || exit $?
fx-config-read

ARGS=()
TEST_NAMES=()
function main {
  while [[ -n "$1" ]]; do
    case "$1" in
      -v) ARGS+=("-v");;
      -z) ZIRCON=1 ;;
      # break at bare double dash
      # allow passing args to runtests
      --) shift
          break
          ;;
      *) TEST_NAMES+=("$1");;
    esac
    shift
  done

  if [[ $ZIRCON -eq 1 ]]; then
    host_test_dir="${ZIRCON_BUILD_DIR}/host_tests"
    fx-command-run build-zircon "-v"
  else
    host_test_dir="${FUCHSIA_BUILD_DIR}/host_tests"
    # If test names are supplied, rebuild the associated tests; else rebuild
    # everything under the GN 'host_tests' label.
    if [[ -n "$TEST_NAMES" ]]; then
      build_targets=(${TEST_NAMES[@]/#/host_tests/})
    else
      build_targets=("./build/gn:host_tests")
    fi
    fx-command-run build "${build_targets[@]}"
  fi

  runtests_cmd=("${ZIRCON_TOOLS_DIR}/runtests" "${ARGS[@]}")

  if [[ -n "$TEST_NAMES" ]]; then
    # Comma-separated list of host test names to filter by.
    IFS="," runtests_cmd+=("-t" "${TEST_NAMES[*]}")
  fi

  # remaining arguments after -- are passed to test runner
  "${runtests_cmd[@]}" "${host_test_dir}" -- "$@"
}

main "$@"