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Diffstat (limited to 'pkg/secio/secio_test.go')
-rw-r--r-- | pkg/secio/secio_test.go | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/pkg/secio/secio_test.go b/pkg/secio/secio_test.go deleted file mode 100644 index d1d905187..000000000 --- a/pkg/secio/secio_test.go +++ /dev/null @@ -1,126 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package secio - -import ( - "bytes" - "errors" - "io" - "io/ioutil" - "math" - "testing" -) - -var errEndOfBuffer = errors.New("write beyond end of buffer") - -// buffer resembles bytes.Buffer, but implements io.ReaderAt and io.WriterAt. -// Reads beyond the end of the buffer return io.EOF. Writes beyond the end of -// the buffer return errEndOfBuffer. -type buffer struct { - Bytes []byte -} - -// ReadAt implements io.ReaderAt.ReadAt. -func (b *buffer) ReadAt(dst []byte, off int64) (int, error) { - if off >= int64(len(b.Bytes)) { - return 0, io.EOF - } - n := copy(dst, b.Bytes[off:]) - if n < len(dst) { - return n, io.EOF - } - return n, nil -} - -// WriteAt implements io.WriterAt.WriteAt. -func (b *buffer) WriteAt(src []byte, off int64) (int, error) { - if off >= int64(len(b.Bytes)) { - return 0, errEndOfBuffer - } - n := copy(b.Bytes[off:], src) - if n < len(src) { - return n, errEndOfBuffer - } - return n, nil -} - -func newBufferString(s string) *buffer { - return &buffer{[]byte(s)} -} - -func TestOffsetReader(t *testing.T) { - buf := newBufferString("foobar") - r := NewOffsetReader(buf, 3) - dst, err := ioutil.ReadAll(r) - if want := []byte("bar"); !bytes.Equal(dst, want) || err != nil { - t.Errorf("ReadAll: got (%q, %v), wanted (%q, nil)", dst, err, want) - } -} - -func TestSectionReader(t *testing.T) { - buf := newBufferString("foobarbaz") - r := NewSectionReader(buf, 3, 3) - dst, err := ioutil.ReadAll(r) - if want, wantErr := []byte("bar"), ErrReachedLimit; !bytes.Equal(dst, want) || err != wantErr { - t.Errorf("ReadAll: got (%q, %v), wanted (%q, %v)", dst, err, want, wantErr) - } -} - -func TestSectionReaderLimitOverflow(t *testing.T) { - // SectionReader behaves like OffsetReader when limit overflows int64. - buf := newBufferString("foobar") - r := NewSectionReader(buf, 3, math.MaxInt64) - dst, err := ioutil.ReadAll(r) - if want := []byte("bar"); !bytes.Equal(dst, want) || err != nil { - t.Errorf("ReadAll: got (%q, %v), wanted (%q, nil)", dst, err, want) - } -} - -func TestOffsetWriter(t *testing.T) { - buf := newBufferString("ABCDEF") - w := NewOffsetWriter(buf, 3) - n, err := w.Write([]byte("foobar")) - if wantN, wantErr := 3, errEndOfBuffer; n != wantN || err != wantErr { - t.Errorf("WriteAt: got (%v, %v), wanted (%v, %v)", n, err, wantN, wantErr) - } - if got, want := buf.Bytes, []byte("ABCfoo"); !bytes.Equal(got, want) { - t.Errorf("buf.Bytes: got %q, wanted %q", got, want) - } -} - -func TestSectionWriter(t *testing.T) { - buf := newBufferString("ABCDEFGHI") - w := NewSectionWriter(buf, 3, 3) - n, err := w.Write([]byte("foobar")) - if wantN, wantErr := 3, ErrReachedLimit; n != wantN || err != wantErr { - t.Errorf("WriteAt: got (%v, %v), wanted (%v, %v)", n, err, wantN, wantErr) - } - if got, want := buf.Bytes, []byte("ABCfooGHI"); !bytes.Equal(got, want) { - t.Errorf("buf.Bytes: got %q, wanted %q", got, want) - } -} - -func TestSectionWriterLimitOverflow(t *testing.T) { - // SectionWriter behaves like OffsetWriter when limit overflows int64. - buf := newBufferString("ABCDEF") - w := NewSectionWriter(buf, 3, math.MaxInt64) - n, err := w.Write([]byte("foobar")) - if wantN, wantErr := 3, errEndOfBuffer; n != wantN || err != wantErr { - t.Errorf("WriteAt: got (%v, %v), wanted (%v, %v)", n, err, wantN, wantErr) - } - if got, want := buf.Bytes, []byte("ABCfoo"); !bytes.Equal(got, want) { - t.Errorf("buf.Bytes: got %q, wanted %q", got, want) - } -} |