forgejo/modules/util/io_test.go
TheFox0x7 4de909747b Add testifylint to lint checks (#4535)
go-require lint is ignored for now

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4535
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: TheFox0x7 <thefox0x7@gmail.com>
Co-committed-by: TheFox0x7 <thefox0x7@gmail.com>
2024-07-30 19:41:10 +00:00

68 lines
1.7 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package util
import (
"bytes"
"errors"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type readerWithError struct {
buf *bytes.Buffer
}
func (r *readerWithError) Read(p []byte) (n int, err error) {
if r.buf.Len() < 2 {
return 0, errors.New("test error")
}
return r.buf.Read(p)
}
func TestReadWithLimit(t *testing.T) {
bs := []byte("0123456789abcdef")
// normal test
buf, err := readWithLimit(bytes.NewBuffer(bs), 5, 2)
require.NoError(t, err)
assert.Equal(t, []byte("01"), buf)
buf, err = readWithLimit(bytes.NewBuffer(bs), 5, 5)
require.NoError(t, err)
assert.Equal(t, []byte("01234"), buf)
buf, err = readWithLimit(bytes.NewBuffer(bs), 5, 6)
require.NoError(t, err)
assert.Equal(t, []byte("012345"), buf)
buf, err = readWithLimit(bytes.NewBuffer(bs), 5, len(bs))
require.NoError(t, err)
assert.Equal(t, []byte("0123456789abcdef"), buf)
buf, err = readWithLimit(bytes.NewBuffer(bs), 5, 100)
require.NoError(t, err)
assert.Equal(t, []byte("0123456789abcdef"), buf)
// test with error
buf, err = readWithLimit(&readerWithError{bytes.NewBuffer(bs)}, 5, 10)
require.NoError(t, err)
assert.Equal(t, []byte("0123456789"), buf)
buf, err = readWithLimit(&readerWithError{bytes.NewBuffer(bs)}, 5, 100)
require.ErrorContains(t, err, "test error")
assert.Empty(t, buf)
// test public function
buf, err = ReadWithLimit(bytes.NewBuffer(bs), 2)
require.NoError(t, err)
assert.Equal(t, []byte("01"), buf)
buf, err = ReadWithLimit(bytes.NewBuffer(bs), 9999999)
require.NoError(t, err)
assert.Equal(t, []byte("0123456789abcdef"), buf)
}