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named_args_test.go
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named_args_test.go
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package pgx_test
import (
"context"
"testing"
"github.com/jackc/pgx/v5"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestNamedArgsRewriteQuery(t *testing.T) {
t.Parallel()
for i, tt := range []struct {
sql string
args []any
namedArgs pgx.NamedArgs
expectedSQL string
expectedArgs []any
}{
{
sql: "select * from users where id = @id",
namedArgs: pgx.NamedArgs{"id": int32(42)},
expectedSQL: "select * from users where id = $1",
expectedArgs: []any{int32(42)},
},
{
sql: "select * from t where foo < @abc and baz = @def and bar < @abc",
namedArgs: pgx.NamedArgs{"abc": int32(42), "def": int32(1)},
expectedSQL: "select * from t where foo < $1 and baz = $2 and bar < $1",
expectedArgs: []any{int32(42), int32(1)},
},
{
sql: "select @a::int, @b::text",
namedArgs: pgx.NamedArgs{"a": int32(42), "b": "foo"},
expectedSQL: "select $1::int, $2::text",
expectedArgs: []any{int32(42), "foo"},
},
{
sql: "select @Abc::int, @b_4::text",
namedArgs: pgx.NamedArgs{"Abc": int32(42), "b_4": "foo"},
expectedSQL: "select $1::int, $2::text",
expectedArgs: []any{int32(42), "foo"},
},
{
sql: "at end @",
namedArgs: pgx.NamedArgs{"a": int32(42), "b": "foo"},
expectedSQL: "at end @",
expectedArgs: []any{},
},
{
sql: "ignores without letter after @ foo bar",
namedArgs: pgx.NamedArgs{"a": int32(42), "b": "foo"},
expectedSQL: "ignores without letter after @ foo bar",
expectedArgs: []any{},
},
{
sql: "name must start with letter @1 foo bar",
namedArgs: pgx.NamedArgs{"a": int32(42), "b": "foo"},
expectedSQL: "name must start with letter @1 foo bar",
expectedArgs: []any{},
},
{
sql: `select *, '@foo' as "@bar" from users where id = @id`,
namedArgs: pgx.NamedArgs{"id": int32(42)},
expectedSQL: `select *, '@foo' as "@bar" from users where id = $1`,
expectedArgs: []any{int32(42)},
},
{
sql: `select * -- @foo
from users -- @single line comments
where id = @id;`,
namedArgs: pgx.NamedArgs{"id": int32(42)},
expectedSQL: `select * -- @foo
from users -- @single line comments
where id = $1;`,
expectedArgs: []any{int32(42)},
},
{
sql: `select * /* @multi line
@comment
*/
/* /* with @nesting */ */
from users
where id = @id;`,
namedArgs: pgx.NamedArgs{"id": int32(42)},
expectedSQL: `select * /* @multi line
@comment
*/
/* /* with @nesting */ */
from users
where id = $1;`,
expectedArgs: []any{int32(42)},
},
// test comments and quotes
} {
sql, args, err := tt.namedArgs.RewriteQuery(context.Background(), nil, tt.sql, tt.args)
require.NoError(t, err)
assert.Equalf(t, tt.expectedSQL, sql, "%d", i)
assert.Equalf(t, tt.expectedArgs, args, "%d", i)
}
}