#!/usr/bin/env bash
#
# For integration-cli test, we use [gocheck](https://labix.org/gocheck), if you want
# to run certain tests on your local host, you should run with command:
#
#     TESTFLAGS='-test.run TestDockerCLIBuildSuite' ./hack/make.sh binary test-integration
#

if [ -z "${MAKEDIR}" ]; then
	MAKEDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
	export MAKEDIR
fi
source "${MAKEDIR}/.go-autogen"

# Set defaults
: "${TEST_REPEAT:=1}"
: "${TESTFLAGS:=}"
: "${TESTDEBUG:=}"
: "${TESTCOVERAGE:=}"
: "${GOCACHE:=$(go env GOCACHE)}"

setup_integration_test_filter() {
	if [ -z "${TEST_FILTER}" ]; then
		return
	fi

	local dirs
	dirs=$(grep -rIlE --include '*_test.go' "func .*${TEST_FILTER}.*\(. \*testing\.T\)" ./integration*/ | xargs -I file dirname file | uniq)
	if [ -z "${TEST_SKIP_INTEGRATION}" ]; then
		: "${TEST_INTEGRATION_DIR:=$(echo "$dirs" | grep -v '^\./integration-cli$')}"
		if [ -z "${TEST_INTEGRATION_DIR}" ]; then
			echo "Skipping integration tests since the supplied filter \"${TEST_FILTER}\" omits all integration tests"
			TEST_SKIP_INTEGRATION=1
		else
			TESTFLAGS+=" -test.run ${TEST_FILTER}"
		fi
	fi

	if [ -z "${TEST_SKIP_INTEGRATION_CLI}" ]; then
		if echo "$dirs" | grep -vq '^./integration-cli$'; then
			TEST_SKIP_INTEGRATION_CLI=1
			echo "Skipping integration-cli tests since the supplied filter \"${TEST_FILTER}\" omits all integration-cli tests"
		else
			TESTFLAGS+=" -test.run /${TEST_FILTER}"
		fi
	fi
}

setup_integration_test_filter
if [ -z "${TEST_SKIP_INTEGRATION}" ] && [ -z "${TEST_INTEGRATION_DIR}" ]; then
	integration_api_dirs="$(go list -test -f '{{- if ne .ForTest "" -}}{{- .Dir -}}{{- end -}}' ./integration/...)"
else
	integration_api_dirs="${TEST_INTEGRATION_DIR}"
fi

run_test_integration() {
	set_platform_timeout
	if [ -z "${TEST_SKIP_INTEGRATION}" ]; then
		run_test_integration_suites "${integration_api_dirs}"
	fi
	if [ -z "${TEST_SKIP_INTEGRATION_CLI}" ]; then
		TIMEOUT=360m run_test_integration_suites integration-cli
	fi
}

run_test_integration_suites() {
	local flags="-test.v -test.timeout=${TIMEOUT} $TESTFLAGS"
	local dirs="$1"
	for dir in ${dirs}; do
		if ! (
			cd "$dir"
			# Create a useful package name based on the tests's $dir. We need to take
			# into account that  "$dir" can be either an absolute (/go/src/github.com/docker/docker/integration/foo)
			# or relative (./integration/foo) path. To account for both, first we strip
			# the absolute path, then remove any leading periods and slashes.
			pkgname="${dir}"
			pkgname="${pkgname#*${GOPATH}/src/${DOCKER_PKG}}"
			pkgname="${pkgname#*.}"
			pkgname="${pkgname#*\/}"

			# Finally, we use periods as separator (instead of slashes) to be more
			# in line with Java package names (which is what junit.xml was designed for)
			pkgname="$(go env GOARCH).${pkgname//\//.}"

			pkgtestflags=$flags
			if [ -n "${TESTCOVERAGE}" ]; then
				pkgtestflags="$pkgtestflags -test.coverprofile=${ABS_DEST}/${pkgname//./-}-coverage.out"
			fi

			echo "Running $PWD (${pkgname}) flags=${pkgtestflags}"
			[ -n "$TESTDEBUG" ] && set -x
			# shellcheck disable=SC2086
			test_env gotestsum \
				--format=standard-verbose \
				--jsonfile="${ABS_DEST}/${pkgname//./-}-go-test-report.json" \
				--junitfile="${ABS_DEST}/${pkgname//./-}-junit-report.xml" \
				--raw-command \
				-- go tool test2json -p "${pkgname}" -t ./test.main ${pkgtestflags}
		); then exit 1; fi
	done
}

build_test_suite_binaries() {
	if [ -n "${DOCKER_INTEGRATION_TESTS_VERIFIED}" ]; then
		echo "Skipping building test binaries; as DOCKER_INTEGRATION_TESTS_VERIFIED is set"
		return
	fi
	if [ -z "${TEST_SKIP_INTEGRATION_CLI}" ]; then
		build_test_suite_binary ./integration-cli "test.main"
	fi
	if [ -z "${TEST_SKIP_INTEGRATION}" ]; then
		for dir in ${integration_api_dirs}; do
			build_test_suite_binary "$dir" "test.main"
		done
	fi
}

# Build a binary for a test suite package
build_test_suite_binary() {
	local dir="$1"
	local out="$2"
	local testflags
	echo Building test suite binary "$dir/$out"
	if [ -n "${TESTCOVERAGE}" ]; then
		testflags="-cover -covermode=atomic"
	fi
	go test ${testflags} -c -o "$dir/$out" -ldflags "$LDFLAGS" "${BUILDFLAGS[@]}" "$dir"
}

cleanup_test_suite_binaries() {
	[ -n "$TESTDEBUG" ] && return
	echo "Removing test suite binaries"
	# shellcheck disable=SC2038
	find integration* -name test.main | xargs -r rm
}

repeat() {
	for i in $(seq 1 ${TEST_REPEAT}); do
		echo "Running integration-test (iteration $i)"
		$@
	done
}

# use "env -i" to tightly control the environment variables that bleed into the tests
test_env() {
	(
		set -e
		[ -n "$TESTDEBUG" ] && set -x
		env -i \
			DEST="$ABS_DEST" \
			DOCKER_API_VERSION="$DOCKER_API_VERSION" \
			DOCKER_BUILDKIT="$DOCKER_BUILDKIT" \
			DOCKER_INTEGRATION_DAEMON_DEST="$DOCKER_INTEGRATION_DAEMON_DEST" \
			DOCKER_TLS_VERIFY="$DOCKER_TEST_TLS_VERIFY" \
			DOCKER_CERT_PATH="$DOCKER_TEST_CERT_PATH" \
			DOCKER_ENGINE_GOARCH="$DOCKER_ENGINE_GOARCH" \
			DOCKER_GRAPHDRIVER="$DOCKER_GRAPHDRIVER" \
			DOCKER_USERLANDPROXY="$DOCKER_USERLANDPROXY" \
			DOCKER_HOST="$DOCKER_HOST" \
			DOCKER_REMAP_ROOT="$DOCKER_REMAP_ROOT" \
			DOCKER_REMOTE_DAEMON="$DOCKER_REMOTE_DAEMON" \
			DOCKER_ROOTLESS="$DOCKER_ROOTLESS" \
			DOCKERFILE="$DOCKERFILE" \
			GITHUB_ACTIONS="$GITHUB_ACTIONS" \
			GOCACHE="$GOCACHE" \
			GOPATH="$GOPATH" \
			GOTRACEBACK=all \
			HOME="$ABS_DEST/fake-HOME" \
			PATH="$PATH" \
			TEMP="$TEMP" \
			TEST_CLIENT_BINARY="$TEST_CLIENT_BINARY" \
			TEST_INTEGRATION_USE_SNAPSHOTTER="$TEST_INTEGRATION_USE_SNAPSHOTTER" \
			"$@"
	)
}

set_platform_timeout() {
	# Test timeout.
	if [ "${DOCKER_ENGINE_GOARCH}" = "arm64" ] || [ "${DOCKER_ENGINE_GOARCH}" = "arm" ]; then
		: "${TIMEOUT:=10m}"
	elif [ "${DOCKER_ENGINE_GOARCH}" = "windows" ]; then
		: "${TIMEOUT:=8m}"
	else
		: "${TIMEOUT:=5m}"
	fi

	if [ "${TEST_REPEAT}" -gt 1 ]; then
		# TIMEOUT needs to take TEST_REPEAT into account, or a premature time out may happen.
		# The following ugliness will:
		# - remove last character (usually 'm' from '10m')
		# - multiply by testcount
		# - add last character back
		TIMEOUT=$((${TIMEOUT::-1} * ${TEST_REPEAT}))${TIMEOUT:$((${#TIMEOUT} - 1)):1}
	fi
}