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response_test.go
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response_test.go
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package go_mocket
import (
"database/sql"
"log"
"testing"
)
var DB *sql.DB
func GetUsers(db *sql.DB) []map[string]string {
var res []map[string]string
age := 27
rows, err := db.Query("SELECT name FROM users WHERE age=?", age)
if err != nil {
log.Fatal(err)
}
defer rows.Close()
for rows.Next() {
var name string
var age string
if err := rows.Scan(&name, &age); err != nil {
log.Fatal(err)
}
row := map[string]string{"name": name, "age": age}
res = append(res, row)
}
if err := rows.Err(); err != nil {
log.Fatal(err)
}
return res
}
func GetUsersWithError(db *sql.DB) error {
age := 27
_, err := db.Query("SELECT name FROM users WHERE age=?", age)
return err
}
func CreateUsersWithError(db *sql.DB) error {
age := 27
_, err := db.Query("INSERT INTO users (age) VALUES (?) ", age)
return err
}
func InsertRecord(db *sql.DB) int64 {
res, err := db.Exec(`INSERT INTO foo VALUES("bar", ?))`, "value")
if err != nil {
return 0
}
id, _ := res.LastInsertId()
return id
}
func TestResponses(t *testing.T) {
Catcher.Register()
db, _ := sql.Open(DRIVER_NAME, "connection_string") // Could be any connection string
DB = db
commonReply := []map[string]interface{}{{"name": "FirstLast", "age": "30"}}
t.Run("Simple SELECT caught by query", func(t *testing.T) {
Catcher.Logging = false
Catcher.Reset().NewMock().WithQuery(`SELECT name FROM users WHERE`).WithReply(commonReply)
result := GetUsers(DB)
if len(result) != 1 {
t.Errorf("Returned sets is not equal to 1. Received %d", len(result))
}
if result[0]["age"] != "30" {
t.Errorf("Age is not equal. Got %v", result[0]["age"])
}
})
t.Run("Simple SELECT with direct object", func(t *testing.T) {
t.Run("Not a once", func(t *testing.T) {
Catcher.Reset()
Catcher.Attach([]*FakeResponse{
{
Pattern: "SELECT name FROM users WHERE",
Response: commonReply,
Once: false,
},
})
result := GetUsers(DB)
if len(result) != 1 {
t.Errorf("Returned sets is not equal to 1. Received %d", len(result))
}
if result[0]["age"] != "30" {
t.Errorf("Age is not equal. Got %v", result[0]["age"])
}
})
t.Run("Once", func(t *testing.T) {
Catcher.Reset()
Catcher.Attach([]*FakeResponse{
{
Pattern: "SELECT name FROM users WHERE",
Response: commonReply,
Once: true,
},
})
GetUsers(DB) // Trigger once to use this mock
result := GetUsers(DB) // trigger second time to receive empty results
if len(result) != 0 {
t.Errorf("Returned sets is not equal to 0. Received %d", len(result))
}
})
})
t.Run("Catch by arguments", func(t *testing.T) {
Catcher.Reset().NewMock().WithArgs(int64(27)).WithReply(commonReply)
result := GetUsers(DB)
if len(result) != 1 {
t.Fatalf("Returned sets is not equal to 1. Received %d", len(result))
}
if result[0]["age"] != "30" {
t.Errorf("Age is not equal. Got %v", result[0]["age"])
}
})
t.Run("Exceptions and Errors", func(t *testing.T) {
t.Run("Fire Query error", func(t *testing.T) {
Catcher.Reset().NewMock().WithArgs(int64(27)).WithReply(commonReply).WithQueryException()
err := GetUsersWithError(DB)
if err == nil {
t.Fatal("Error not triggered")
}
})
t.Run("Fire Execute error", func(t *testing.T) {
Catcher.Reset().NewMock().WithQuery("INSERT INTO users (age)").WithQueryException()
err := CreateUsersWithError(DB)
if err == nil {
t.Fatal("Error not triggered")
}
})
t.Run("Fire Execute error", func(t *testing.T) {
Catcher.Reset().NewMock().WithQuery("INSERT INTO users (age)").WithError(sql.ErrNoRows)
err := CreateUsersWithError(DB)
if err == nil || err != sql.ErrNoRows {
t.Fatal("Error not triggered")
}
})
})
t.Run("Last insert id", func(t *testing.T) {
var mockedId int64
mockedId = 64
Catcher.Reset().NewMock().WithQuery("INSERT INTO foo").WithId(mockedId)
returnedId := InsertRecord(DB)
if returnedId != mockedId {
t.Fatalf("Last insert id not returned. Expected: [%v] , Got: [%v]", mockedId, returnedId)
}
})
t.Run(`Recognise both ? and $1 Postgres placeholders for raw query`, func(t *testing.T) {
t.Run("Question mark", func(t *testing.T) {
testFunc := func(db *sql.DB) string {
var name string
err := db.QueryRow(`SELECT * FROM foo a = $1 AND b = $2 AND c = $3`, "value", "value2", "value3").Scan(&name)
if err != nil {
t.Fatalf("Test function failed [%v]", err)
return ""
}
return name
}
Catcher.Reset().NewMock().WithQuery("SELECT * FROM foo ").WithReply([]map[string]interface{}{{"name": "full_name"}})
returnedName := testFunc(DB)
if returnedName != "full_name" {
t.Fatalf("Returned name mismatches. Expected: [%v] , Got: [%v]", "full_name", returnedName)
}
})
})
}