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sqlmock_test.go
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sqlmock_test.go
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package sqlmock
import (
"database/sql"
"fmt"
"testing"
"time"
)
func TestMockQuery(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
rs := NewRows([]string{"id", "title"}).FromCSVString("5,hello world")
ExpectQuery("SELECT (.+) FROM articles WHERE id = ?").
WithArgs(5).
WillReturnRows(rs)
rows, err := db.Query("SELECT (.+) FROM articles WHERE id = ?", 5)
if err != nil {
t.Errorf("error '%s' was not expected while retrieving mock rows", err)
}
defer rows.Close()
if !rows.Next() {
t.Error("it must have had one row as result, but got empty result set instead")
}
var id int
var title string
err = rows.Scan(&id, &title)
if err != nil {
t.Errorf("error '%s' was not expected while trying to scan row", err)
}
if id != 5 {
t.Errorf("expected mocked id to be 5, but got %d instead", id)
}
if title != "hello world" {
t.Errorf("expected mocked title to be 'hello world', but got '%s' instead", title)
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}
func TestMockQueryTypes(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
columns := []string{"id", "timestamp", "sold"}
timestamp := time.Now()
rs := NewRows(columns)
rs.AddRow(5, timestamp, true)
ExpectQuery("SELECT (.+) FROM sales WHERE id = ?").
WithArgs(5).
WillReturnRows(rs)
rows, err := db.Query("SELECT (.+) FROM sales WHERE id = ?", 5)
if err != nil {
t.Errorf("error '%s' was not expected while retrieving mock rows", err)
}
defer rows.Close()
if !rows.Next() {
t.Error("it must have had one row as result, but got empty result set instead")
}
var id int
var time time.Time
var sold bool
err = rows.Scan(&id, &time, &sold)
if err != nil {
t.Errorf("error '%s' was not expected while trying to scan row", err)
}
if id != 5 {
t.Errorf("expected mocked id to be 5, but got %d instead", id)
}
if time != timestamp {
t.Errorf("expected mocked time to be %s, but got '%s' instead", timestamp, time)
}
if sold != true {
t.Errorf("expected mocked boolean to be true, but got %v instead", sold)
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}
func TestTransactionExpectations(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
// begin and commit
ExpectBegin()
ExpectCommit()
tx, err := db.Begin()
if err != nil {
t.Errorf("an error '%s' was not expected when beginning a transaction", err)
}
err = tx.Commit()
if err != nil {
t.Errorf("an error '%s' was not expected when commiting a transaction", err)
}
// begin and rollback
ExpectBegin()
ExpectRollback()
tx, err = db.Begin()
if err != nil {
t.Errorf("an error '%s' was not expected when beginning a transaction", err)
}
err = tx.Rollback()
if err != nil {
t.Errorf("an error '%s' was not expected when rolling back a transaction", err)
}
// begin with an error
ExpectBegin().WillReturnError(fmt.Errorf("some err"))
tx, err = db.Begin()
if err == nil {
t.Error("an error was expected when beginning a transaction, but got none")
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}
func TestPreparedQueryExecutions(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
rs1 := NewRows([]string{"id", "title"}).FromCSVString("5,hello world")
ExpectQuery("SELECT (.+) FROM articles WHERE id = ?").
WithArgs(5).
WillReturnRows(rs1)
rs2 := NewRows([]string{"id", "title"}).FromCSVString("2,whoop")
ExpectQuery("SELECT (.+) FROM articles WHERE id = ?").
WithArgs(2).
WillReturnRows(rs2)
stmt, err := db.Prepare("SELECT (.+) FROM articles WHERE id = ?")
if err != nil {
t.Errorf("error '%s' was not expected while creating a prepared statement", err)
}
var id int
var title string
err = stmt.QueryRow(5).Scan(&id, &title)
if err != nil {
t.Errorf("error '%s' was not expected querying row from statement and scanning", err)
}
if id != 5 {
t.Errorf("expected mocked id to be 5, but got %d instead", id)
}
if title != "hello world" {
t.Errorf("expected mocked title to be 'hello world', but got '%s' instead", title)
}
err = stmt.QueryRow(2).Scan(&id, &title)
if err != nil {
t.Errorf("error '%s' was not expected querying row from statement and scanning", err)
}
if id != 2 {
t.Errorf("expected mocked id to be 2, but got %d instead", id)
}
if title != "whoop" {
t.Errorf("expected mocked title to be 'whoop', but got '%s' instead", title)
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}
func TestUnexpectedOperations(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
stmt, err := db.Prepare("SELECT (.+) FROM articles WHERE id = ?")
if err != nil {
t.Errorf("error '%s' was not expected while creating a prepared statement", err)
}
var id int
var title string
err = stmt.QueryRow(5).Scan(&id, &title)
if err == nil {
t.Error("error was expected querying row, since there was no such expectation")
}
ExpectRollback()
err = db.Close()
if err == nil {
t.Error("error was expected while closing the database, expectation was not fulfilled", err)
}
}
func TestWrongExpectations(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
ExpectBegin()
rs1 := NewRows([]string{"id", "title"}).FromCSVString("5,hello world")
ExpectQuery("SELECT (.+) FROM articles WHERE id = ?").
WithArgs(5).
WillReturnRows(rs1)
ExpectCommit().WillReturnError(fmt.Errorf("deadlock occured"))
ExpectRollback() // won't be triggered
stmt, err := db.Prepare("SELECT (.+) FROM articles WHERE id = ? FOR UPDATE")
if err != nil {
t.Errorf("error '%s' was not expected while creating a prepared statement", err)
}
var id int
var title string
err = stmt.QueryRow(5).Scan(&id, &title)
if err == nil {
t.Error("error was expected while querying row, since there begin transaction expectation is not fulfilled")
}
// lets go around and start transaction
tx, err := db.Begin()
if err != nil {
t.Errorf("an error '%s' was not expected when beginning a transaction", err)
}
err = stmt.QueryRow(5).Scan(&id, &title)
if err != nil {
t.Errorf("error '%s' was not expected while querying row, since transaction was started", err)
}
err = tx.Commit()
if err == nil {
t.Error("a deadlock error was expected when commiting a transaction", err)
}
err = db.Close()
if err == nil {
t.Error("error was expected while closing the database, expectation was not fulfilled", err)
}
}
func TestExecExpectations(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
result := NewResult(1, 1)
ExpectExec("^INSERT INTO articles").
WithArgs("hello").
WillReturnResult(result)
res, err := db.Exec("INSERT INTO articles (title) VALUES (?)", "hello")
if err != nil {
t.Errorf("error '%s' was not expected, while inserting a row", err)
}
id, err := res.LastInsertId()
if err != nil {
t.Errorf("error '%s' was not expected, while getting a last insert id", err)
}
affected, err := res.RowsAffected()
if err != nil {
t.Errorf("error '%s' was not expected, while getting affected rows", err)
}
if id != 1 {
t.Errorf("expected last insert id to be 1, but got %d instead", id)
}
if affected != 1 {
t.Errorf("expected affected rows to be 1, but got %d instead", affected)
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}
func TestRowBuilderAndNilTypes(t *testing.T) {
db, err := sql.Open("mock", "")
if err != nil {
t.Errorf("an error '%s' was not expected when opening a stub database connection", err)
}
rs := NewRows([]string{"id", "active", "created", "status"}).
AddRow(1, true, time.Now(), 5).
AddRow(2, false, nil, nil)
ExpectQuery("SELECT (.+) FROM sales").WillReturnRows(rs)
rows, err := db.Query("SELECT * FROM sales")
if err != nil {
t.Errorf("error '%s' was not expected while retrieving mock rows", err)
}
defer rows.Close()
// NullTime and NullInt are used from stubs_test.go
var (
id int
active bool
created NullTime
status NullInt
)
if !rows.Next() {
t.Error("it must have had row in rows, but got empty result set instead")
}
err = rows.Scan(&id, &active, &created, &status)
if err != nil {
t.Errorf("error '%s' was not expected while trying to scan row", err)
}
if id != 1 {
t.Errorf("expected mocked id to be 1, but got %d instead", id)
}
if !active {
t.Errorf("expected 'active' to be 'true', but got '%v' instead", active)
}
if !created.Valid {
t.Errorf("expected 'created' to be valid, but it %+v is not", created)
}
if !status.Valid {
t.Errorf("expected 'status' to be valid, but it %+v is not", status)
}
if status.Integer != 5 {
t.Errorf("expected 'status' to be '5', but got '%d'", status.Integer)
}
// test second row
if !rows.Next() {
t.Error("it must have had row in rows, but got empty result set instead")
}
err = rows.Scan(&id, &active, &created, &status)
if err != nil {
t.Errorf("error '%s' was not expected while trying to scan row", err)
}
if id != 2 {
t.Errorf("expected mocked id to be 2, but got %d instead", id)
}
if active {
t.Errorf("expected 'active' to be 'false', but got '%v' instead", active)
}
if created.Valid {
t.Errorf("expected 'created' to be invalid, but it %+v is not", created)
}
if status.Valid {
t.Errorf("expected 'status' to be invalid, but it %+v is not", status)
}
if err = db.Close(); err != nil {
t.Errorf("error '%s' was not expected while closing the database", err)
}
}