package store

import (
	"errors"
	"fmt"
	"testing"

	"github.com/jackc/pgx/v5/pgconn"
)

func TestADuplicateIsRecognisedOnEitherDatabase(t *testing.T) {
	for _, c := range []struct {
		name string
		err  error
		want bool
	}{
		{"sqlite", errors.New("constraint failed: UNIQUE constraint failed: users.email (2067)"), true},
		// What pgx returns, wrapped as database/sql passes it on: "unique"
		// in lower case, which a check for "UNIQUE" missed.
		{"postgres", fmt.Errorf("exec: %w", &pgconn.PgError{Code: "23505",
			Message: `duplicate key value violates unique constraint "users_email_key"`}), true},
		{"postgres, as text", errors.New(`ERROR: duplicate key value violates unique constraint "users_email_key" (SQLSTATE 23505)`), true},
		{"another postgres error", &pgconn.PgError{Code: "23502", Message: "null value in column"}, false},
		{"nothing", nil, false},
	} {
		if got := isUniqueViolation(c.err); got != c.want {
			t.Errorf("%s: %v, want %v", c.name, got, c.want)
		}
	}
}