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// Copyright 2016 Qiang Xue. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package dbx
import (
"testing"
"database/sql"
"github.com/stretchr/testify/assert"
)
func TestSelectQuery(t *testing.T) {
db := getDB()
// minimal select query
q := db.Select().From("users").Build()
expected := "SELECT * FROM `users`"
assert.Equal(t, q.SQL(), expected, "t1")
assert.Equal(t, len(q.Params()), 0, "t2")
// a full select query
q = db.Select("id", "name").
PreFragment("pre").
PostFragment("post").
AndSelect("age").
Distinct(true).
SelectOption("CALC").
From("users").
Where(NewExp("age>30")).
AndWhere(NewExp("status=1")).
OrWhere(NewExp("type=2")).
InnerJoin("profile", NewExp("user.id=profile.id")).
LeftJoin("team", nil).
RightJoin("dept", nil).
OrderBy("age DESC", "type").
AndOrderBy("id").
GroupBy("id").
AndGroupBy("age").
Having(NewExp("id>10")).
AndHaving(NewExp("id<20")).
OrHaving(NewExp("type=3")).
Limit(10).
Offset(20).
Bind(Params{"id": 1}).
AndBind(Params{"age": 30}).
Build()
expected = "pre SELECT DISTINCT CALC `id`, `name`, `age` FROM `users` INNER JOIN `profile` ON user.id=profile.id LEFT JOIN `team` RIGHT JOIN `dept` WHERE ((age>30) AND (status=1)) OR (type=2) GROUP BY `id`, `age` HAVING ((id>10) AND (id<20)) OR (type=3) ORDER BY `age` DESC, `type`, `id` LIMIT 10 OFFSET 20 post"
assert.Equal(t, q.SQL(), expected, "t3")
assert.Equal(t, len(q.Params()), 2, "t4")
q3 := db.Select().AndBind(Params{"id": 1}).Build()
assert.Equal(t, len(q3.Params()), 1)
// union
q1 := db.Select().From("users").PreFragment("pre_q1").Build()
q2 := db.Select().From("posts").PostFragment("post_q2").Build()
q = db.Select().From("profiles").Union(q1).UnionAll(q2).PreFragment("pre").PostFragment("post").Build()
expected = "(pre SELECT * FROM `profiles` post) UNION (pre_q1 SELECT * FROM `users`) UNION ALL (SELECT * FROM `posts` post_q2)"
assert.Equal(t, q.SQL(), expected, "t5")
}
func TestSelectQuery_Data(t *testing.T) {
db := getPreparedDB()
defer db.Close()
q := db.Select("id", "email").From("customer").OrderBy("id")
var customer Customer
q.One(&customer)
assert.Equal(t, customer.Email, "user1@example.com", "customer.Email")
var customers []Customer
q.All(&customers)
assert.Equal(t, len(customers), 3, "len(customers)")
rows, _ := q.Rows()
customer.Email = ""
rows.one(&customer)
assert.Equal(t, customer.Email, "user1@example.com", "customer.Email")
var id, email string
q.Row(&id, &email)
assert.Equal(t, id, "1", "id")
assert.Equal(t, email, "user1@example.com", "email")
var emails []string
err := db.Select("email").From("customer").Column(&emails)
if assert.Nil(t, err) {
assert.Equal(t, 3, len(emails))
}
var e int
err = db.Select().From("customer").One(&e)
assert.NotNil(t, err)
err = db.Select().From("customer").All(&e)
assert.NotNil(t, err)
}
func TestSelectQuery_Model(t *testing.T) {
db := getPreparedDB()
defer db.Close()
{
// One without specifying FROM
var customer CustomerPtr
err := db.Select().OrderBy("id").One(&customer)
if assert.Nil(t, err) {
assert.Equal(t, "user1@example.com", *customer.Email)
}
}
{
// All without specifying FROM
var customers []CustomerPtr
err := db.Select().OrderBy("id").All(&customers)
if assert.Nil(t, err) {
assert.Equal(t, 3, len(customers))
}
}
{
// Model without specifying FROM
var customer CustomerPtr
err := db.Select().Model(2, &customer)
if assert.Nil(t, err) {
assert.Equal(t, "user2@example.com", *customer.Email)
}
}
{
// Model with WHERE
var customer CustomerPtr
err := db.Select().Where(HashExp{"id": 1}).Model(2, &customer)
assert.Equal(t, sql.ErrNoRows, err)
err = db.Select().Where(HashExp{"id": 2}).Model(2, &customer)
assert.Nil(t, err)
}
{
// errors
var i int
err := db.Select().Model(1, &i)
assert.Equal(t, VarTypeError("must be a pointer to a struct"), err)
var a struct {
Name string
}
err = db.Select().Model(1, &a)
assert.Equal(t, MissingPKError, err)
var b struct {
ID1 string `db:"pk"`
ID2 string `db:"pk"`
}
err = db.Select().Model(1, &b)
assert.Equal(t, CompositePKError, err)
}
}
func TestSelectWithBuildHook(t *testing.T) {
db := getPreparedDB()
defer db.Close()
var buildSQL string
db.Select("id").
From("user").
WithBuildHook(func(q *Query) {
buildSQL = q.SQL()
}).
Build()
assert.Equal(t, "SELECT `id` FROM `user`", buildSQL)
}
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