#!/bin/bash -e

# Copyright 2019 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Run govim integration tests against a local gopls.

usage() {
  cat <<EOUSAGE
Usage: $0 [--sudo] [--short]

Run govim tests against HEAD using local docker. If --sudo is set, run docker
with sudo. If --short is set, run `go test` with `-short`.
EOUSAGE
}

SUDO_IF_NEEDED=
TEST_SHORT=
while [[ $# -gt 0 ]]; do
  case "$1" in
    "-h" | "--help" | "help")
      usage
      exit 0
      ;;
    "--sudo")
      SUDO_IF_NEEDED="sudo "
      shift
      ;;
    "--short")
      TEST_SHORT="-short"
      shift
      ;;
    *)
      usage
      exit 1
  esac
done

# Find the tools root, so that this script can be run from any directory.
script_dir=$(dirname "$(readlink -f "$0")")
tools_dir=$(readlink -f "${script_dir}/../../..")

# Build gopls.
cd "${tools_dir}/gopls"
temp_gopls=$(mktemp -p "$PWD")
trap "rm -f \"${temp_gopls}\"" EXIT
go build -o "${temp_gopls}"

# Build the test harness. Here we are careful to pass in a very limited build
# context so as to optimize caching.
cd "${tools_dir}"
${SUDO_IF_NEEDED}docker build -t gopls-govim-harness -f gopls/integration/govim/Dockerfile \
  gopls/integration/govim

# Run govim integration tests.
echo "running govim integration tests using ${temp_gopls}"
temp_gopls_name=$(basename "${temp_gopls}")
${SUDO_IF_NEEDED}docker run --rm -t \
  -v "${tools_dir}:/src/tools" \
  -w "/src/govim" \
  --ulimit memlock=-1:-1 \
  gopls-govim-harness \
  go test ${TEST_SHORT} ./cmd/govim \
    -gopls "/src/tools/gopls/${temp_gopls_name}"