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// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package gg_pgx_test
import (
"context"
"database/sql"
"errors"
"testing"
"go.xyrillian.de/gg/assert"
"go.xyrillian.de/gg/errext"
"go.xyrillian.de/gg/gsql"
"go.xyrillian.de/gg/pgruntime"
gg_pgx "go.xyrillian.de/gg-pgx"
)
// NOTE: There is not a lot of test coverage for the methods in `interface.go`, which is intentional:
// These are just boilerplate implementations where, if it compiles at all, it is all but guaranteed to work as intended.
var defaultBehavior pgruntime.ConnectionBehavior
func TestMain(m *testing.M) {
pgruntime.WithTestDB(m, m.Run)
}
func TestConn(t *testing.T) {
conn, _ := gg_pgx.SingleConnector().ConnectForTest(t, defaultBehavior)
testConnectionHandle(t, conn)
}
func TestPool(t *testing.T) {
pool, _ := gg_pgx.PoolConnector().ConnectForTest(t, defaultBehavior)
testConnectionHandle(t, pool)
}
func TestPoolConn(t *testing.T) {
pool, _ := gg_pgx.PoolConnector().ConnectForTest(t, defaultBehavior)
t.Cleanup(pool.Close)
conn, err := pool.Acquire(t.Context())
if assert.ErrEqual(t, err, nil) {
testConnectionHandle(t, conn)
}
}
func testConnectionHandle[H gsql.ConnectionHandle](t *testing.T, conn H) {
ctx := t.Context()
t.Cleanup(func() {
assert.ErrEqual(t, conn.GSQLClose(ctx), nil)
})
// test GSQLPrepare() + Exec()
_, err := execQuery(ctx, conn, `CREATE TABLE people (id BIGSERIAL PRIMARY KEY, name TEXT NOT NULL)`, nil)
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
for _, name := range []string{"Alice", "Bob", "Carol"} {
_, err = execQuery(ctx, conn, `INSERT INTO people (name) VALUES ($1)`, []any{name})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
}
// test GSQLPrepare() + QueryRow()
var id int64
err = queryRow(ctx, conn, `SELECT id FROM people WHERE name = $1`, []any{"Bob"}, []any{&id})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, id, 2)
// test GSQLQuery()
type person struct {
ID int64
Name string
}
var people []person
err = foreachRow(t, ctx, conn, `SELECT id, name FROM people ORDER BY id`, nil, []string{"id", "name"}, func(scan func(slots ...any) error) error {
var p person
err := scan(&p.ID, &p.Name)
if err != nil {
return err
}
people = append(people, p)
return nil
})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, people, []person{
{1, "Alice"},
{2, "Bob"},
{3, "Carol"},
})
// test GSQLTransact() + success
err = conn.GSQLTransact(ctx, func(tx gsql.Handle) error {
_, err := execQuery(ctx, tx, `UPDATE people SET name = $1 WHERE id = $2`, []any{"Carolin", 3})
return err
})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
// check that the transaction was committed
var name string
err = queryRow(ctx, conn, `SELECT name FROM people WHERE id = $1`, []any{3}, []any{&name})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, name, "Carolin")
// test GSQLTransact() + error
err = conn.GSQLTransact(ctx, func(tx gsql.Handle) error {
_, err := execQuery(ctx, tx, `UPDATE people SET name = $1 WHERE id = $2`, []any{"Allen", 1})
if err != nil {
return err
}
// check that the change is visible within the transaction
var name string
err = queryRow(ctx, tx, `SELECT name FROM people WHERE id = $1`, []any{1}, []any{&name})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, name, "Allen")
return errors.New("this was a bad idea")
})
if !assert.ErrEqual(t, err, "this was a bad idea") {
t.FailNow()
}
// check that the transaction was *not* committed
err = queryRow(ctx, conn, `SELECT name FROM people WHERE id = $1`, []any{1}, []any{&name})
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, name, "Alice")
}
// Convenience function for executing a one-off SQL query returning no rows.
func execQuery(ctx context.Context, db gsql.Handle, query string, args []any) (sql.Result, error) {
stmt, err := db.GSQLPrepare(ctx, query, false)
if err != nil {
return nil, err
}
result, err := stmt.Exec(ctx, args)
return result, errext.WithCleanup(err, "stmt.Close", stmt.Close())
}
// Convenience function for executing a one-off SQL query returning one row.
func queryRow(ctx context.Context, db gsql.Handle, query string, args, slots []any) error {
stmt, err := db.GSQLPrepare(ctx, query, true) // repeated=true does not technically make sense, but provides code coverage
if err != nil {
return err
}
err = stmt.QueryRow(ctx, args, slots)
return errext.WithCleanup(err, "stmt.Close", stmt.Close())
}
// Convenience function for executing a one-off SQL query returning several rows.
func foreachRow(t *testing.T, ctx context.Context, db gsql.Handle, query string, args []any, expectedColumnNames []string, action func(scan func(slots ...any) error) error) error {
t.Helper()
rows, err := db.GSQLQuery(ctx, query, args)
if err != nil {
return err
}
columns, err := rows.Columns()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, columns, expectedColumnNames)
}
for rows.Next() {
err := action(rows.Scan)
if err != nil {
return errext.WithCleanup(err, "rows.Close", rows.Close())
}
}
return rows.Close()
}
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