gohorsejobs/backend/internal/database/database_test.go
2026-02-14 15:42:40 -03:00

86 lines
2.3 KiB
Go

package database_test
import (
"os"
"regexp"
"testing"
"github.com/DATA-DOG/go-sqlmock"
"github.com/rede5/gohorsejobs/backend/internal/database"
)
func TestBuildConnectionString(t *testing.T) {
// Backup env vars
oldURL := os.Getenv("DATABASE_URL")
defer func() {
os.Setenv("DATABASE_URL", oldURL)
}()
// Case 1: DATABASE_URL
os.Setenv("DATABASE_URL", "postgres://foo:bar@localhost:5432/db?sslmode=disable")
s, err := database.BuildConnectionString()
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
if s != "postgres://foo:bar@localhost:5432/db?sslmode=disable" {
t.Errorf("Mismatch URL")
}
// Case 2: Missing DATABASE_URL
os.Unsetenv("DATABASE_URL")
_, err = database.BuildConnectionString()
if err == nil {
t.Error("Expected error for missing DATABASE_URL")
}
}
func TestRunMigrations(t *testing.T) {
// Setup Mock DB
db, mock, err := sqlmock.New()
if err != nil {
t.Fatalf("an error '%s' was not expected when opening a stub database connection", err)
}
defer db.Close()
// Inject DB
database.DB = db
// Create temp migrations dir
err = os.Mkdir("migrations", 0755)
if err != nil && !os.IsExist(err) {
t.Fatalf("Failed to create migrations dir: %v", err)
}
defer os.RemoveAll("migrations")
// Create dummy migration file
content := "CREATE TABLE test (id int);"
err = os.WriteFile("migrations/001_test.sql", []byte(content), 0644)
if err != nil {
t.Fatalf("Failed to write migration file: %v", err)
}
// Mock Expectations
mock.ExpectExec(regexp.QuoteMeta(`
CREATE TABLE IF NOT EXISTS schema_migrations (
filename TEXT PRIMARY KEY,
applied_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
)
`)).WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectQuery(regexp.QuoteMeta("SELECT EXISTS(SELECT 1 FROM schema_migrations WHERE filename = $1)")).
WithArgs("001_test.sql").
WillReturnRows(sqlmock.NewRows([]string{"exists"}).AddRow(false))
mock.ExpectBegin()
mock.ExpectExec(regexp.QuoteMeta(content)).WillReturnResult(sqlmock.NewResult(0, 0))
mock.ExpectExec(regexp.QuoteMeta("INSERT INTO schema_migrations (filename) VALUES ($1)")).
WithArgs("001_test.sql").
WillReturnResult(sqlmock.NewResult(1, 1))
mock.ExpectCommit()
// Run
database.RunMigrations()
if err := mock.ExpectationsWereMet(); err != nil {
t.Errorf("there were unfulfilled expectations: %s", err)
}
}