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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package multischema
import (
"context"
"testing"
"entgo.io/ent/dialect/sql"
"entgo.io/ent/dialect/sql/schema"
"entgo.io/ent/entc/integration/multischema/ent"
"entgo.io/ent/entc/integration/multischema/ent/group"
"entgo.io/ent/entc/integration/multischema/ent/migrate"
"entgo.io/ent/entc/integration/multischema/ent/pet"
"entgo.io/ent/entc/integration/multischema/ent/user"
atlas "ariga.io/atlas/sql/schema"
_ "github.com/go-sql-driver/mysql"
"github.com/stretchr/testify/require"
)
func TestMySQL(t *testing.T) {
db, err := sql.Open("mysql", "root:pass@tcp(localhost:3308)/")
require.NoError(t, err)
defer db.Close()
ctx := context.Background()
_, err = db.ExecContext(ctx, "CREATE DATABASE IF NOT EXISTS db1")
require.NoError(t, err, "creating database")
_, err = db.ExecContext(ctx, "CREATE DATABASE IF NOT EXISTS db2")
require.NoError(t, err, "creating database")
defer db.ExecContext(ctx, "DROP DATABASE IF EXISTS db1")
defer db.ExecContext(ctx, "DROP DATABASE IF EXISTS db2")
// Default schema for the connection is db1.
db1, err := sql.Open("mysql", "root:pass@tcp(localhost:3308)/db1")
require.NoError(t, err)
defer db1.Close()
cfg := ent.SchemaConfig{
// The "users" and the "pets" table reside in the same schema
// as the connection (the default search schema). Thus, there
// is no need to set them explicitly both in the migration and
// runtime statements.
//
// Pet: "db1",
// User: "db1",
// The "groups" and "group_users" reside in external schema (db2).
Group: "db2",
GroupUsers: "db2",
}
client := ent.NewClient(ent.Driver(db1), ent.AlternateSchema(cfg))
setupSchema(t, client, cfg)
pedro := client.Pet.Create().SetName("Pedro").SaveX(ctx)
groups := client.Group.CreateBulk(
client.Group.Create().SetName("GitHub"),
client.Group.Create().SetName("GitLab"),
).SaveX(ctx)
usr := client.User.Create().SetName("a8m").AddPets(pedro).AddGroups(groups...).SaveX(ctx)
// Custom modifier with schema config.
var names []struct {
User string `sql:"user_name"`
Pet string `sql:"pet_name"`
}
client.Pet.Query().
Modify(func(s *sql.Selector) {
// The below function is exported using a custom
// template defined in ent/template/config.tmpl.
cfg := ent.SchemaConfigFromContext(s.Context())
t := sql.Table(user.Table).Schema(cfg.User)
s.Join(t).On(s.C(pet.FieldOwnerID), t.C(user.FieldID))
s.Select(
sql.As(t.C(user.FieldName), "user_name"),
sql.As(s.C(pet.FieldName), "pet_name"),
)
}).
ScanX(ctx, &names)
require.Len(t, names, 1)
require.Equal(t, "a8m", names[0].User)
require.Equal(t, "Pedro", names[0].Pet)
id := client.Group.Query().
Where(group.HasUsersWith(user.ID(usr.ID))).
Limit(1).
QueryUsers().
QueryPets().
OnlyIDX(ctx)
require.Equal(t, pedro.ID, id)
affected := client.Group.
Update().
ClearUsers().
Where(
group.And(
group.Name(groups[0].Name),
group.HasUsersWith(
user.HasPetsWith(
pet.Name(pedro.Name),
),
),
),
).
SaveX(ctx)
require.Equal(t, 1, affected)
exist := groups[0].QueryUsers().ExistX(ctx)
require.False(t, exist)
exist = groups[1].QueryUsers().ExistX(ctx)
require.True(t, exist)
exist = pedro.QueryOwner().ExistX(ctx)
require.True(t, exist)
pedro = pedro.Update().ClearOwner().SaveX(ctx)
exist = pedro.QueryOwner().ExistX(ctx)
require.False(t, exist)
require.Equal(t, client.User.Query().CountX(ctx), len(client.User.Query().AllX(ctx)))
require.Equal(t, client.Pet.Query().CountX(ctx), len(client.Pet.Query().AllX(ctx)))
}
func setupSchema(t *testing.T, client *ent.Client, cfg ent.SchemaConfig) {
err := client.Schema.Create(
context.Background(),
migrate.WithForeignKeys(false),
schema.WithDiffHook(func(next schema.Differ) schema.Differ {
return schema.DiffFunc(func(current, desired *atlas.Schema) ([]atlas.Change, error) {
for tt, s := range map[string]string{group.Table: cfg.Group, group.UsersTable: cfg.GroupUsers} {
t1, ok := desired.Table(tt)
require.True(t, ok)
t1.SetSchema(atlas.New(s))
}
return next.Diff(current, desired)
})
}))
require.NoError(t, err)
}
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