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select_test.go
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select_test.go
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package qb
import (
"reflect"
"testing"
)
type simple struct {
ID string `pk:"1"`
Name string
}
type twoPK struct {
DocNo string `pk:"1"`
Rev string `pk:"2"`
Name string
}
type threePK struct {
DocNo string `pk:"1"`
Rev string `pk:"3"`
Name string
By string `pk:"5"`
}
func TestSelectAll(t *testing.T) {
tbl, err := NewTable("", simple{})
if err != nil {
t.Errorf("got err = %v want nil", err)
}
b := NewPQSelect(tbl, false)
got := b.SelectAll()
want := "SELECT * FROM simple ORDER BY id"
if got != want {
t.Errorf("got query = %s want %s", got, want)
}
b = NewPQSelect(tbl, true)
got = b.SelectAll()
want = "SELECT id,name FROM simple ORDER BY id"
if got != want {
t.Errorf("got query = %s want %s", got, want)
}
}
func TestSelectByPK(t *testing.T) {
var tests = []struct {
tbl interface{}
explicit bool
want string
}{
{simple{}, false, "SELECT * FROM simple WHERE id = $1"},
{simple{}, true, "SELECT id,name FROM simple WHERE id = $1"},
{twoPK{}, false,
"SELECT * FROM twopk WHERE docno = $1 AND rev = $2"},
{twoPK{}, true,
"SELECT docno,rev,name FROM twopk WHERE docno = $1 AND rev = $2"},
{threePK{}, false,
"SELECT * FROM threepk WHERE docno = $1 AND rev = $2 AND by = $3"},
{threePK{}, true,
"SELECT docno,rev,name,by FROM threepk WHERE docno = $1 AND rev = $2 AND by = $3"},
}
for _, test := range tests {
testSelectByPK(t, test.tbl, test.explicit, test.want)
}
}
func testSelectByPK(t *testing.T, tbl interface{}, explicit bool, want string) {
b := newBuilder(t, tbl, explicit)
got := b.SelectByPK()
if got != want {
t.Errorf("got query: %s \n want %s", got, want)
}
}
func TestSetFilterQuery(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetFilter("age", "=", 20)
wantQ := "SELECT * FROM emp WHERE age = $1 ORDER BY id"
wantA := []interface{}{20}
testQuery(t, b, wantQ, wantA)
b.SetFilter("Name", "=", "me")
wantQ = "SELECT * FROM emp WHERE age = $1 AND name = $2 ORDER BY id"
wantA = []interface{}{20, "me"}
testQuery(t, b, wantQ, wantA)
}
func TestSetRangeQuery(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetRange("Name", "a", "b")
wantQ := "SELECT * FROM emp WHERE name >= $1 AND name <= $2 ORDER BY id"
wantA := []interface{}{"a", "b"}
testQuery(t, b, wantQ, wantA)
}
func testQuery(t *testing.T, b *Select, wantQ string, wantA []interface{}) {
gotQ, gotA := b.Query()
if gotQ != wantQ {
t.Errorf("got query: %s \n want %s", gotQ, wantQ)
}
if !reflect.DeepEqual(gotA, wantA) {
t.Errorf("got args: %v want %v", gotA, wantA)
}
}
func TestOrderBy(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetRange("Name", "a", "b").OrderBy("id", "name")
wantQ := "SELECT * FROM emp WHERE name >= $1 AND name <= $2 ORDER BY id,name"
wantA := []interface{}{"a", "b"}
testQuery(t, b, wantQ, wantA)
}
func TestSetLimitAndOffset(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetRange("Name", "a", "b")
b.SetLimit(5)
wantQ := "SELECT * FROM emp WHERE name >= $1 AND name <= $2 ORDER BY id LIMIT 5"
wantA := []interface{}{"a", "b"}
testQuery(t, b, wantQ, wantA)
b.Reset()
b.SetRange("Name", "a", "b")
b.SetOffset(2)
wantQ = "SELECT * FROM emp WHERE name >= $1 AND name <= $2 ORDER BY id OFFSET 2"
wantA = []interface{}{"a", "b"}
testQuery(t, b, wantQ, wantA)
b.SetLimit(3)
wantQ = "SELECT * FROM emp WHERE name >= $1 AND name <= $2 ORDER BY id LIMIT 3 OFFSET 2"
wantA = []interface{}{"a", "b"}
testQuery(t, b, wantQ, wantA)
}
func TestError(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetFilter("NamE", "=", "me")
testError(t, b, false)
b.SetFilter("FieldNotExist", "=", "b")
testError(t, b, true)
b.Reset()
b.SetFields("id", "name")
testError(t, b, false)
b.SetFields("FieldNotExist")
testError(t, b, true)
b.Reset()
b.OrderBy("id", "name")
testError(t, b, false)
b.OrderBy("FieldNotExist")
testError(t, b, true)
}
func TestReset(t *testing.T) {
type Emp struct {
ID string `pk:"1"`
Name string
Age int
}
b := newBuilder(t, Emp{}, false)
b.SetFilter("age", "=", 20)
b.SetFields("ID")
wantQ := "SELECT id FROM emp WHERE age = $1 ORDER BY id"
wantA := []interface{}{20}
testQuery(t, b, wantQ, wantA)
b.Reset()
b.SetFields("name")
b.SetFilter("Name", "=", "me")
wantQ = "SELECT name FROM emp WHERE name = $1 ORDER BY id"
wantA = []interface{}{"me"}
testQuery(t, b, wantQ, wantA)
}
func testError(t *testing.T, b *Select, err bool) {
got := b.Error()
if err {
if got == nil {
t.Errorf("got: nil want an error")
}
return
}
if got != nil {
t.Errorf("got err: %v want nil", got)
}
}
func newBuilder(t *testing.T, tbl interface{}, explicit bool) *Select {
ti, err := NewTable("", tbl)
if err != nil {
t.Errorf("got err : %v want nil", err)
}
b := NewPQSelect(ti, explicit)
return b
}