main_test.go

/*
Copyright 2018 Bitnine Co., Ltd.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package ag

import (
	"database/sql"
	"flag"
	"fmt"
	"log"
	"os"
	"testing"

	_ "github.com/lib/pq"
)

var (
	agTestServer    *bool
	agTestGraphName = "ag_test_go"
)

func TestMain(m *testing.M) {
	agTestServer = flag.Bool("ag.test.server", false, "Run server tests")
	flag.Parse()

	setUpServerTest()
	c := m.Run()
	tearDownServerTest()

	os.Exit(c)
}

func setUpServerTest() {
	if !*agTestServer {
		return
	}

	// Other environment variables: PGHOST, PGPORT, PGUSER, PGPASSWORD, ...
	os.Setenv("PGDATABASE", "postgres")
	os.Setenv("PGSSLMODE", "disable")

	db, err := sql.Open("postgres", "")
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	q := fmt.Sprintf(`CREATE GRAPH IF NOT EXISTS %q`, agTestGraphName)
	_, err = db.Exec(q)
	if err != nil {
		log.Fatal(err)
	}
}

func tearDownServerTest() {
	if !*agTestServer {
		return
	}

	db, err := sql.Open("postgres", "")
	if err == nil {
		q := fmt.Sprintf(`DROP GRAPH %q CASCADE`, agTestGraphName)
		db.Exec(q)
		db.Close()
	}
}

func skipUnlessServerTest(t *testing.T) {
	if !*agTestServer {
		t.SkipNow()
	}
}

func mustOpenAndSetGraph(t *testing.T) *sql.DB {
	db, err := sql.Open("postgres", "")
	if err != nil {
		t.Fatal(err)
	}
	q := fmt.Sprintf(`SET graph_path = %q`, agTestGraphName)
	_, err = db.Exec(q)
	if err != nil {
		t.Fatal(err)
	}
	return db
}