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|
package sqlutil
import (
"context"
"database/sql"
"reflect"
"testing"
sqlmock "github.com/DATA-DOG/go-sqlmock"
)
func TestShouldReturnCorrectAmountOfResulstIfFewerVariablesThanLimit(t *testing.T) {
db, mock, err := sqlmock.New()
assertNoError(t, err, "Failed to make DB")
limit := uint(4)
r := mock.NewRows([]string{"id"}).
AddRow(1).
AddRow(2).
AddRow(3)
mock.ExpectQuery(`SELECT id WHERE id IN \(\$1, \$2, \$3\)`).WillReturnRows(r)
// nolint:goconst
q := "SELECT id WHERE id IN ($1)"
v := []int{1, 2, 3}
iKeyIDs := make([]interface{}, len(v))
for i, d := range v {
iKeyIDs[i] = d
}
ctx := context.Background()
var result = make([]int, 0)
err = RunLimitedVariablesQuery(ctx, q, db, iKeyIDs, limit, func(rows *sql.Rows) error {
for rows.Next() {
var id int
err = rows.Scan(&id)
assertNoError(t, err, "rows.Scan returned an error")
result = append(result, id)
}
return nil
})
assertNoError(t, err, "Call returned an error")
if len(result) != len(v) {
t.Fatalf("Result should be 3 long")
}
}
func TestShouldReturnCorrectAmountOfResulstIfEqualVariablesAsLimit(t *testing.T) {
db, mock, err := sqlmock.New()
assertNoError(t, err, "Failed to make DB")
limit := uint(4)
r := mock.NewRows([]string{"id"}).
AddRow(1).
AddRow(2).
AddRow(3).
AddRow(4)
mock.ExpectQuery(`SELECT id WHERE id IN \(\$1, \$2, \$3, \$4\)`).WillReturnRows(r)
// nolint:goconst
q := "SELECT id WHERE id IN ($1)"
v := []int{1, 2, 3, 4}
iKeyIDs := make([]interface{}, len(v))
for i, d := range v {
iKeyIDs[i] = d
}
ctx := context.Background()
var result = make([]int, 0)
err = RunLimitedVariablesQuery(ctx, q, db, iKeyIDs, limit, func(rows *sql.Rows) error {
for rows.Next() {
var id int
err = rows.Scan(&id)
assertNoError(t, err, "rows.Scan returned an error")
result = append(result, id)
}
return nil
})
assertNoError(t, err, "Call returned an error")
if len(result) != len(v) {
t.Fatalf("Result should be 4 long")
}
}
func TestShouldReturnCorrectAmountOfResultsIfMoreVariablesThanLimit(t *testing.T) {
db, mock, err := sqlmock.New()
assertNoError(t, err, "Failed to make DB")
limit := uint(4)
r1 := mock.NewRows([]string{"id"}).
AddRow(1).
AddRow(2).
AddRow(3).
AddRow(4)
r2 := mock.NewRows([]string{"id"}).
AddRow(5)
mock.ExpectQuery(`SELECT id WHERE id IN \(\$1, \$2, \$3, \$4\)`).WillReturnRows(r1)
mock.ExpectQuery(`SELECT id WHERE id IN \(\$1\)`).WillReturnRows(r2)
// nolint:goconst
q := "SELECT id WHERE id IN ($1)"
v := []int{1, 2, 3, 4, 5}
iKeyIDs := make([]interface{}, len(v))
for i, d := range v {
iKeyIDs[i] = d
}
ctx := context.Background()
var result = make([]int, 0)
err = RunLimitedVariablesQuery(ctx, q, db, iKeyIDs, limit, func(rows *sql.Rows) error {
for rows.Next() {
var id int
err = rows.Scan(&id)
assertNoError(t, err, "rows.Scan returned an error")
result = append(result, id)
}
return nil
})
assertNoError(t, err, "Call returned an error")
if len(result) != len(v) {
t.Fatalf("Result should be 5 long")
}
if !reflect.DeepEqual(v, result) {
t.Fatalf("Result is not as expected: got %v want %v", v, result)
}
}
func TestShouldReturnErrorIfRowsScanReturnsError(t *testing.T) {
db, mock, err := sqlmock.New()
assertNoError(t, err, "Failed to make DB")
limit := uint(4)
// adding a string ID should result in rows.Scan returning an error
r := mock.NewRows([]string{"id"}).
AddRow("hej").
AddRow(2).
AddRow(3)
mock.ExpectQuery(`SELECT id WHERE id IN \(\$1, \$2, \$3\)`).WillReturnRows(r)
// nolint:goconst
q := "SELECT id WHERE id IN ($1)"
v := []int{-1, -2, 3}
iKeyIDs := make([]interface{}, len(v))
for i, d := range v {
iKeyIDs[i] = d
}
ctx := context.Background()
var result = make([]uint, 0)
err = RunLimitedVariablesQuery(ctx, q, db, iKeyIDs, limit, func(rows *sql.Rows) error {
for rows.Next() {
var id uint
err = rows.Scan(&id)
if err != nil {
return err
}
result = append(result, id)
}
return nil
})
if err == nil {
t.Fatalf("Call did not return an error")
}
}
func assertNoError(t *testing.T, err error, msg string) {
t.Helper()
if err == nil {
return
}
t.Fatalf(msg)
}
|
