4f4a855d82
Reviewed-on: https://go-review.googlesource.com/c/158019 gotools/: * Makefile.am (go_cmd_vet_files): Update for Go1.12beta2 release. (GOTOOLS_TEST_TIMEOUT): Increase to 600. (check-runtime): Export LD_LIBRARY_PATH before computing GOARCH and GOOS. (check-vet): Copy golang.org/x/tools into check-vet-dir. * Makefile.in: Regenerate. gcc/testsuite/: * go.go-torture/execute/names-1.go: Stop using debug/xcoff, which is no longer externally visible. From-SVN: r268084
752 lines
22 KiB
Go
752 lines
22 KiB
Go
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package base32
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import (
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"bytes"
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"errors"
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"io"
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"io/ioutil"
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"strings"
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"testing"
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)
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type testpair struct {
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decoded, encoded string
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}
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var pairs = []testpair{
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// RFC 4648 examples
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{"", ""},
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{"f", "MY======"},
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{"fo", "MZXQ===="},
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{"foo", "MZXW6==="},
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{"foob", "MZXW6YQ="},
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{"fooba", "MZXW6YTB"},
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{"foobar", "MZXW6YTBOI======"},
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// Wikipedia examples, converted to base32
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{"sure.", "ON2XEZJO"},
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{"sure", "ON2XEZI="},
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{"sur", "ON2XE==="},
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{"su", "ON2Q===="},
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{"leasure.", "NRSWC43VOJSS4==="},
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{"easure.", "MVQXG5LSMUXA===="},
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{"asure.", "MFZXK4TFFY======"},
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{"sure.", "ON2XEZJO"},
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}
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var bigtest = testpair{
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"Twas brillig, and the slithy toves",
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"KR3WC4ZAMJZGS3DMNFTSYIDBNZSCA5DIMUQHG3DJORUHSIDUN53GK4Y=",
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}
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func testEqual(t *testing.T, msg string, args ...interface{}) bool {
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t.Helper()
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if args[len(args)-2] != args[len(args)-1] {
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t.Errorf(msg, args...)
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return false
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}
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return true
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}
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func TestEncode(t *testing.T) {
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for _, p := range pairs {
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got := StdEncoding.EncodeToString([]byte(p.decoded))
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testEqual(t, "Encode(%q) = %q, want %q", p.decoded, got, p.encoded)
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}
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}
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func TestEncoder(t *testing.T) {
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for _, p := range pairs {
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bb := &bytes.Buffer{}
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encoder := NewEncoder(StdEncoding, bb)
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encoder.Write([]byte(p.decoded))
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encoder.Close()
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testEqual(t, "Encode(%q) = %q, want %q", p.decoded, bb.String(), p.encoded)
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}
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}
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func TestEncoderBuffering(t *testing.T) {
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input := []byte(bigtest.decoded)
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for bs := 1; bs <= 12; bs++ {
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bb := &bytes.Buffer{}
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encoder := NewEncoder(StdEncoding, bb)
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for pos := 0; pos < len(input); pos += bs {
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end := pos + bs
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if end > len(input) {
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end = len(input)
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}
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n, err := encoder.Write(input[pos:end])
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testEqual(t, "Write(%q) gave error %v, want %v", input[pos:end], err, error(nil))
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testEqual(t, "Write(%q) gave length %v, want %v", input[pos:end], n, end-pos)
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}
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err := encoder.Close()
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testEqual(t, "Close gave error %v, want %v", err, error(nil))
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testEqual(t, "Encoding/%d of %q = %q, want %q", bs, bigtest.decoded, bb.String(), bigtest.encoded)
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}
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}
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func TestDecode(t *testing.T) {
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for _, p := range pairs {
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dbuf := make([]byte, StdEncoding.DecodedLen(len(p.encoded)))
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count, end, err := StdEncoding.decode(dbuf, []byte(p.encoded))
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testEqual(t, "Decode(%q) = error %v, want %v", p.encoded, err, error(nil))
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testEqual(t, "Decode(%q) = length %v, want %v", p.encoded, count, len(p.decoded))
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if len(p.encoded) > 0 {
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testEqual(t, "Decode(%q) = end %v, want %v", p.encoded, end, (p.encoded[len(p.encoded)-1] == '='))
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}
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testEqual(t, "Decode(%q) = %q, want %q", p.encoded,
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string(dbuf[0:count]),
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p.decoded)
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dbuf, err = StdEncoding.DecodeString(p.encoded)
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testEqual(t, "DecodeString(%q) = error %v, want %v", p.encoded, err, error(nil))
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testEqual(t, "DecodeString(%q) = %q, want %q", p.encoded, string(dbuf), p.decoded)
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}
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}
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func TestDecoder(t *testing.T) {
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for _, p := range pairs {
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decoder := NewDecoder(StdEncoding, strings.NewReader(p.encoded))
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dbuf := make([]byte, StdEncoding.DecodedLen(len(p.encoded)))
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count, err := decoder.Read(dbuf)
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if err != nil && err != io.EOF {
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t.Fatal("Read failed", err)
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}
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testEqual(t, "Read from %q = length %v, want %v", p.encoded, count, len(p.decoded))
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testEqual(t, "Decoding of %q = %q, want %q", p.encoded, string(dbuf[0:count]), p.decoded)
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if err != io.EOF {
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count, err = decoder.Read(dbuf)
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}
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testEqual(t, "Read from %q = %v, want %v", p.encoded, err, io.EOF)
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}
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}
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type badReader struct {
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data []byte
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errs []error
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called int
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limit int
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}
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// Populates p with data, returns a count of the bytes written and an
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// error. The error returned is taken from badReader.errs, with each
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// invocation of Read returning the next error in this slice, or io.EOF,
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// if all errors from the slice have already been returned. The
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// number of bytes returned is determined by the size of the input buffer
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// the test passes to decoder.Read and will be a multiple of 8, unless
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// badReader.limit is non zero.
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func (b *badReader) Read(p []byte) (int, error) {
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lim := len(p)
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if b.limit != 0 && b.limit < lim {
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lim = b.limit
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}
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if len(b.data) < lim {
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lim = len(b.data)
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}
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for i := range p[:lim] {
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p[i] = b.data[i]
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}
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b.data = b.data[lim:]
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err := io.EOF
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if b.called < len(b.errs) {
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err = b.errs[b.called]
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}
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b.called++
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return lim, err
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}
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// TestIssue20044 tests that decoder.Read behaves correctly when the caller
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// supplied reader returns an error.
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func TestIssue20044(t *testing.T) {
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badErr := errors.New("bad reader error")
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testCases := []struct {
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r badReader
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res string
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err error
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dbuflen int
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}{
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// Check valid input data accompanied by an error is processed and the error is propagated.
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{r: badReader{data: []byte("MY======"), errs: []error{badErr}},
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res: "f", err: badErr},
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// Check a read error accompanied by input data consisting of newlines only is propagated.
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{r: badReader{data: []byte("\n\n\n\n\n\n\n\n"), errs: []error{badErr, nil}},
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res: "", err: badErr},
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// Reader will be called twice. The first time it will return 8 newline characters. The
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// second time valid base32 encoded data and an error. The data should be decoded
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// correctly and the error should be propagated.
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{r: badReader{data: []byte("\n\n\n\n\n\n\n\nMY======"), errs: []error{nil, badErr}},
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res: "f", err: badErr, dbuflen: 8},
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// Reader returns invalid input data (too short) and an error. Verify the reader
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// error is returned.
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{r: badReader{data: []byte("MY====="), errs: []error{badErr}},
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res: "", err: badErr},
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// Reader returns invalid input data (too short) but no error. Verify io.ErrUnexpectedEOF
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// is returned.
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{r: badReader{data: []byte("MY====="), errs: []error{nil}},
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res: "", err: io.ErrUnexpectedEOF},
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// Reader returns invalid input data and an error. Verify the reader and not the
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// decoder error is returned.
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{r: badReader{data: []byte("Ma======"), errs: []error{badErr}},
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res: "", err: badErr},
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// Reader returns valid data and io.EOF. Check data is decoded and io.EOF is propagated.
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{r: badReader{data: []byte("MZXW6YTB"), errs: []error{io.EOF}},
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res: "fooba", err: io.EOF},
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// Check errors are properly reported when decoder.Read is called multiple times.
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// decoder.Read will be called 8 times, badReader.Read will be called twice, returning
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// valid data both times but an error on the second call.
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{r: badReader{data: []byte("NRSWC43VOJSS4==="), errs: []error{nil, badErr}},
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res: "leasure.", err: badErr, dbuflen: 1},
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// Check io.EOF is properly reported when decoder.Read is called multiple times.
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// decoder.Read will be called 8 times, badReader.Read will be called twice, returning
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// valid data both times but io.EOF on the second call.
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{r: badReader{data: []byte("NRSWC43VOJSS4==="), errs: []error{nil, io.EOF}},
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res: "leasure.", err: io.EOF, dbuflen: 1},
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// The following two test cases check that errors are propagated correctly when more than
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// 8 bytes are read at a time.
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{r: badReader{data: []byte("NRSWC43VOJSS4==="), errs: []error{io.EOF}},
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res: "leasure.", err: io.EOF, dbuflen: 11},
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{r: badReader{data: []byte("NRSWC43VOJSS4==="), errs: []error{badErr}},
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res: "leasure.", err: badErr, dbuflen: 11},
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// Check that errors are correctly propagated when the reader returns valid bytes in
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// groups that are not divisible by 8. The first read will return 11 bytes and no
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// error. The second will return 7 and an error. The data should be decoded correctly
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// and the error should be propagated.
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{r: badReader{data: []byte("NRSWC43VOJSS4==="), errs: []error{nil, badErr}, limit: 11},
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res: "leasure.", err: badErr},
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}
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for _, tc := range testCases {
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input := tc.r.data
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decoder := NewDecoder(StdEncoding, &tc.r)
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var dbuflen int
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if tc.dbuflen > 0 {
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dbuflen = tc.dbuflen
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} else {
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dbuflen = StdEncoding.DecodedLen(len(input))
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}
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dbuf := make([]byte, dbuflen)
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var err error
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var res []byte
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for err == nil {
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var n int
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n, err = decoder.Read(dbuf)
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if n > 0 {
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res = append(res, dbuf[:n]...)
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}
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}
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testEqual(t, "Decoding of %q = %q, want %q", string(input), string(res), tc.res)
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testEqual(t, "Decoding of %q err = %v, expected %v", string(input), err, tc.err)
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}
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}
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// TestDecoderError verifies decode errors are propagated when there are no read
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// errors.
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func TestDecoderError(t *testing.T) {
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for _, readErr := range []error{io.EOF, nil} {
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input := "MZXW6YTb"
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dbuf := make([]byte, StdEncoding.DecodedLen(len(input)))
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br := badReader{data: []byte(input), errs: []error{readErr}}
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decoder := NewDecoder(StdEncoding, &br)
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n, err := decoder.Read(dbuf)
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testEqual(t, "Read after EOF, n = %d, expected %d", n, 0)
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if _, ok := err.(CorruptInputError); !ok {
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t.Errorf("Corrupt input error expected. Found %T", err)
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}
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}
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}
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// TestReaderEOF ensures decoder.Read behaves correctly when input data is
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// exhausted.
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func TestReaderEOF(t *testing.T) {
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for _, readErr := range []error{io.EOF, nil} {
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input := "MZXW6YTB"
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br := badReader{data: []byte(input), errs: []error{nil, readErr}}
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decoder := NewDecoder(StdEncoding, &br)
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dbuf := make([]byte, StdEncoding.DecodedLen(len(input)))
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n, err := decoder.Read(dbuf)
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testEqual(t, "Decoding of %q err = %v, expected %v", string(input), err, error(nil))
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n, err = decoder.Read(dbuf)
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testEqual(t, "Read after EOF, n = %d, expected %d", n, 0)
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testEqual(t, "Read after EOF, err = %v, expected %v", err, io.EOF)
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n, err = decoder.Read(dbuf)
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testEqual(t, "Read after EOF, n = %d, expected %d", n, 0)
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testEqual(t, "Read after EOF, err = %v, expected %v", err, io.EOF)
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}
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}
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func TestDecoderBuffering(t *testing.T) {
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for bs := 1; bs <= 12; bs++ {
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decoder := NewDecoder(StdEncoding, strings.NewReader(bigtest.encoded))
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buf := make([]byte, len(bigtest.decoded)+12)
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var total int
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var n int
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var err error
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for total = 0; total < len(bigtest.decoded) && err == nil; {
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n, err = decoder.Read(buf[total : total+bs])
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total += n
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}
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if err != nil && err != io.EOF {
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t.Errorf("Read from %q at pos %d = %d, unexpected error %v", bigtest.encoded, total, n, err)
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}
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testEqual(t, "Decoding/%d of %q = %q, want %q", bs, bigtest.encoded, string(buf[0:total]), bigtest.decoded)
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}
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}
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func TestDecodeCorrupt(t *testing.T) {
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testCases := []struct {
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input string
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offset int // -1 means no corruption.
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}{
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{"", -1},
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{"!!!!", 0},
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{"x===", 0},
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{"AA=A====", 2},
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{"AAA=AAAA", 3},
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{"MMMMMMMMM", 8},
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{"MMMMMM", 0},
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{"A=", 1},
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{"AA=", 3},
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{"AA==", 4},
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{"AA===", 5},
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{"AAAA=", 5},
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{"AAAA==", 6},
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{"AAAAA=", 6},
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{"AAAAA==", 7},
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{"A=======", 1},
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{"AA======", -1},
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{"AAA=====", 3},
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{"AAAA====", -1},
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{"AAAAA===", -1},
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{"AAAAAA==", 6},
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{"AAAAAAA=", -1},
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{"AAAAAAAA", -1},
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}
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for _, tc := range testCases {
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dbuf := make([]byte, StdEncoding.DecodedLen(len(tc.input)))
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_, err := StdEncoding.Decode(dbuf, []byte(tc.input))
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if tc.offset == -1 {
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if err != nil {
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t.Error("Decoder wrongly detected corruption in", tc.input)
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}
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continue
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}
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switch err := err.(type) {
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case CorruptInputError:
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testEqual(t, "Corruption in %q at offset %v, want %v", tc.input, int(err), tc.offset)
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default:
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t.Error("Decoder failed to detect corruption in", tc)
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}
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}
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}
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func TestBig(t *testing.T) {
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n := 3*1000 + 1
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raw := make([]byte, n)
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const alpha = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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for i := 0; i < n; i++ {
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raw[i] = alpha[i%len(alpha)]
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}
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encoded := new(bytes.Buffer)
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w := NewEncoder(StdEncoding, encoded)
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nn, err := w.Write(raw)
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if nn != n || err != nil {
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t.Fatalf("Encoder.Write(raw) = %d, %v want %d, nil", nn, err, n)
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}
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err = w.Close()
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if err != nil {
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t.Fatalf("Encoder.Close() = %v want nil", err)
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}
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decoded, err := ioutil.ReadAll(NewDecoder(StdEncoding, encoded))
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if err != nil {
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t.Fatalf("ioutil.ReadAll(NewDecoder(...)): %v", err)
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}
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if !bytes.Equal(raw, decoded) {
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var i int
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for i = 0; i < len(decoded) && i < len(raw); i++ {
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if decoded[i] != raw[i] {
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break
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}
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}
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t.Errorf("Decode(Encode(%d-byte string)) failed at offset %d", n, i)
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}
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}
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func testStringEncoding(t *testing.T, expected string, examples []string) {
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for _, e := range examples {
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buf, err := StdEncoding.DecodeString(e)
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if err != nil {
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t.Errorf("Decode(%q) failed: %v", e, err)
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continue
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}
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if s := string(buf); s != expected {
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t.Errorf("Decode(%q) = %q, want %q", e, s, expected)
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}
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}
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}
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func TestNewLineCharacters(t *testing.T) {
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// Each of these should decode to the string "sure", without errors.
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examples := []string{
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"ON2XEZI=",
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"ON2XEZI=\r",
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"ON2XEZI=\n",
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"ON2XEZI=\r\n",
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"ON2XEZ\r\nI=",
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"ON2X\rEZ\nI=",
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"ON2X\nEZ\rI=",
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"ON2XEZ\nI=",
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"ON2XEZI\n=",
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}
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testStringEncoding(t, "sure", examples)
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// Each of these should decode to the string "foobar", without errors.
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examples = []string{
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"MZXW6YTBOI======",
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"MZXW6YTBOI=\r\n=====",
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}
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testStringEncoding(t, "foobar", examples)
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}
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func TestDecoderIssue4779(t *testing.T) {
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encoded := `JRXXEZLNEBUXA43VNUQGI33MN5ZCA43JOQQGC3LFOQWCAY3PNZZWKY3UMV2HK4
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RAMFSGS4DJONUWG2LOM4QGK3DJOQWCA43FMQQGI3YKMVUXK43NN5SCA5DFNVYG64RANFXGG2LENFSH
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K3TUEB2XIIDMMFRG64TFEBSXIIDEN5WG64TFEBWWCZ3OMEQGC3DJOF2WCLRAKV2CAZLONFWQUYLEEB
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WWS3TJNUQHMZLONFQW2LBAOF2WS4ZANZXXG5DSOVSCAZLYMVZGG2LUMF2GS33OEB2WY3DBNVRW6IDM
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MFRG64TJOMQG42LTNEQHK5AKMFWGS4LVNFYCAZLYEBSWCIDDN5WW233EN4QGG33OONSXC5LBOQXCAR
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DVNFZSAYLVORSSA2LSOVZGKIDEN5WG64RANFXAU4TFOBZGK2DFNZSGK4TJOQQGS3RAOZXWY5LQORQX
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IZJAOZSWY2LUEBSXG43FEBRWS3DMOVWSAZDPNRXXEZJAMV2SAZTVM5UWC5BANZ2WY3DBBJYGC4TJMF
|
|
2HK4ROEBCXQY3FOB2GK5LSEBZWS3TUEBXWGY3BMVRWC5BAMN2XA2LEMF2GC5BANZXW4IDQOJXWSZDF
|
|
NZ2CYIDTOVXHIIDJNYFGG5LMOBQSA4LVNEQG6ZTGNFRWSYJAMRSXGZLSOVXHIIDNN5WGY2LUEBQW42
|
|
LNEBUWIIDFON2CA3DBMJXXE5LNFY==
|
|
====`
|
|
encodedShort := strings.ReplaceAll(encoded, "\n", "")
|
|
|
|
dec := NewDecoder(StdEncoding, strings.NewReader(encoded))
|
|
res1, err := ioutil.ReadAll(dec)
|
|
if err != nil {
|
|
t.Errorf("ReadAll failed: %v", err)
|
|
}
|
|
|
|
dec = NewDecoder(StdEncoding, strings.NewReader(encodedShort))
|
|
var res2 []byte
|
|
res2, err = ioutil.ReadAll(dec)
|
|
if err != nil {
|
|
t.Errorf("ReadAll failed: %v", err)
|
|
}
|
|
|
|
if !bytes.Equal(res1, res2) {
|
|
t.Error("Decoded results not equal")
|
|
}
|
|
}
|
|
|
|
func BenchmarkEncodeToString(b *testing.B) {
|
|
data := make([]byte, 8192)
|
|
b.SetBytes(int64(len(data)))
|
|
for i := 0; i < b.N; i++ {
|
|
StdEncoding.EncodeToString(data)
|
|
}
|
|
}
|
|
|
|
func BenchmarkDecodeString(b *testing.B) {
|
|
data := StdEncoding.EncodeToString(make([]byte, 8192))
|
|
b.SetBytes(int64(len(data)))
|
|
for i := 0; i < b.N; i++ {
|
|
StdEncoding.DecodeString(data)
|
|
}
|
|
}
|
|
|
|
func TestWithCustomPadding(t *testing.T) {
|
|
for _, testcase := range pairs {
|
|
defaultPadding := StdEncoding.EncodeToString([]byte(testcase.decoded))
|
|
customPadding := StdEncoding.WithPadding('@').EncodeToString([]byte(testcase.decoded))
|
|
expected := strings.ReplaceAll(defaultPadding, "=", "@")
|
|
|
|
if expected != customPadding {
|
|
t.Errorf("Expected custom %s, got %s", expected, customPadding)
|
|
}
|
|
if testcase.encoded != defaultPadding {
|
|
t.Errorf("Expected %s, got %s", testcase.encoded, defaultPadding)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestWithoutPadding(t *testing.T) {
|
|
for _, testcase := range pairs {
|
|
defaultPadding := StdEncoding.EncodeToString([]byte(testcase.decoded))
|
|
customPadding := StdEncoding.WithPadding(NoPadding).EncodeToString([]byte(testcase.decoded))
|
|
expected := strings.TrimRight(defaultPadding, "=")
|
|
|
|
if expected != customPadding {
|
|
t.Errorf("Expected custom %s, got %s", expected, customPadding)
|
|
}
|
|
if testcase.encoded != defaultPadding {
|
|
t.Errorf("Expected %s, got %s", testcase.encoded, defaultPadding)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDecodeWithPadding(t *testing.T) {
|
|
encodings := []*Encoding{
|
|
StdEncoding,
|
|
StdEncoding.WithPadding('-'),
|
|
StdEncoding.WithPadding(NoPadding),
|
|
}
|
|
|
|
for i, enc := range encodings {
|
|
for _, pair := range pairs {
|
|
|
|
input := pair.decoded
|
|
encoded := enc.EncodeToString([]byte(input))
|
|
|
|
decoded, err := enc.DecodeString(encoded)
|
|
if err != nil {
|
|
t.Errorf("DecodeString Error for encoding %d (%q): %v", i, input, err)
|
|
}
|
|
|
|
if input != string(decoded) {
|
|
t.Errorf("Unexpected result for encoding %d: got %q; want %q", i, decoded, input)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDecodeWithWrongPadding(t *testing.T) {
|
|
encoded := StdEncoding.EncodeToString([]byte("foobar"))
|
|
|
|
_, err := StdEncoding.WithPadding('-').DecodeString(encoded)
|
|
if err == nil {
|
|
t.Error("expected error")
|
|
}
|
|
|
|
_, err = StdEncoding.WithPadding(NoPadding).DecodeString(encoded)
|
|
if err == nil {
|
|
t.Error("expected error")
|
|
}
|
|
}
|
|
|
|
func TestBufferedDecodingSameError(t *testing.T) {
|
|
testcases := []struct {
|
|
prefix string
|
|
chunkCombinations [][]string
|
|
expected error
|
|
}{
|
|
// NBSWY3DPO5XXE3DE == helloworld
|
|
// Test with "ZZ" as extra input
|
|
{"helloworld", [][]string{
|
|
[]string{"NBSW", "Y3DP", "O5XX", "E3DE", "ZZ"},
|
|
[]string{"NBSWY3DPO5XXE3DE", "ZZ"},
|
|
[]string{"NBSWY3DPO5XXE3DEZZ"},
|
|
[]string{"NBS", "WY3", "DPO", "5XX", "E3D", "EZZ"},
|
|
[]string{"NBSWY3DPO5XXE3", "DEZZ"},
|
|
}, io.ErrUnexpectedEOF},
|
|
|
|
// Test with "ZZY" as extra input
|
|
{"helloworld", [][]string{
|
|
[]string{"NBSW", "Y3DP", "O5XX", "E3DE", "ZZY"},
|
|
[]string{"NBSWY3DPO5XXE3DE", "ZZY"},
|
|
[]string{"NBSWY3DPO5XXE3DEZZY"},
|
|
[]string{"NBS", "WY3", "DPO", "5XX", "E3D", "EZZY"},
|
|
[]string{"NBSWY3DPO5XXE3", "DEZZY"},
|
|
}, io.ErrUnexpectedEOF},
|
|
|
|
// Normal case, this is valid input
|
|
{"helloworld", [][]string{
|
|
[]string{"NBSW", "Y3DP", "O5XX", "E3DE"},
|
|
[]string{"NBSWY3DPO5XXE3DE"},
|
|
[]string{"NBS", "WY3", "DPO", "5XX", "E3D", "E"},
|
|
[]string{"NBSWY3DPO5XXE3", "DE"},
|
|
}, nil},
|
|
|
|
// MZXW6YTB = fooba
|
|
{"fooba", [][]string{
|
|
[]string{"MZXW6YTBZZ"},
|
|
[]string{"MZXW6YTBZ", "Z"},
|
|
[]string{"MZXW6YTB", "ZZ"},
|
|
[]string{"MZXW6YT", "BZZ"},
|
|
[]string{"MZXW6Y", "TBZZ"},
|
|
[]string{"MZXW6Y", "TB", "ZZ"},
|
|
[]string{"MZXW6", "YTBZZ"},
|
|
[]string{"MZXW6", "YTB", "ZZ"},
|
|
[]string{"MZXW6", "YT", "BZZ"},
|
|
}, io.ErrUnexpectedEOF},
|
|
|
|
// Normal case, this is valid input
|
|
{"fooba", [][]string{
|
|
[]string{"MZXW6YTB"},
|
|
[]string{"MZXW6YT", "B"},
|
|
[]string{"MZXW6Y", "TB"},
|
|
[]string{"MZXW6", "YTB"},
|
|
[]string{"MZXW6", "YT", "B"},
|
|
[]string{"MZXW", "6YTB"},
|
|
[]string{"MZXW", "6Y", "TB"},
|
|
}, nil},
|
|
}
|
|
|
|
for _, testcase := range testcases {
|
|
for _, chunks := range testcase.chunkCombinations {
|
|
pr, pw := io.Pipe()
|
|
|
|
// Write the encoded chunks into the pipe
|
|
go func() {
|
|
for _, chunk := range chunks {
|
|
pw.Write([]byte(chunk))
|
|
}
|
|
pw.Close()
|
|
}()
|
|
|
|
decoder := NewDecoder(StdEncoding, pr)
|
|
_, err := ioutil.ReadAll(decoder)
|
|
|
|
if err != testcase.expected {
|
|
t.Errorf("Expected %v, got %v; case %s %+v", testcase.expected, err, testcase.prefix, chunks)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestEncodedDecodedLen(t *testing.T) {
|
|
type test struct {
|
|
in int
|
|
wantEnc int
|
|
wantDec int
|
|
}
|
|
data := bytes.Repeat([]byte("x"), 100)
|
|
for _, test := range []struct {
|
|
name string
|
|
enc *Encoding
|
|
cases []test
|
|
}{
|
|
{"StdEncoding", StdEncoding, []test{
|
|
{0, 0, 0},
|
|
{1, 8, 5},
|
|
{5, 8, 5},
|
|
{6, 16, 10},
|
|
{10, 16, 10},
|
|
}},
|
|
{"NoPadding", StdEncoding.WithPadding(NoPadding), []test{
|
|
{0, 0, 0},
|
|
{1, 2, 1},
|
|
{2, 4, 2},
|
|
{5, 8, 5},
|
|
{6, 10, 6},
|
|
{7, 12, 7},
|
|
{10, 16, 10},
|
|
{11, 18, 11},
|
|
}},
|
|
} {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
for _, tc := range test.cases {
|
|
encLen := test.enc.EncodedLen(tc.in)
|
|
decLen := test.enc.DecodedLen(encLen)
|
|
enc := test.enc.EncodeToString(data[:tc.in])
|
|
if len(enc) != encLen {
|
|
t.Fatalf("EncodedLen(%d) = %d but encoded to %q (%d)", tc.in, encLen, enc, len(enc))
|
|
}
|
|
if encLen != tc.wantEnc {
|
|
t.Fatalf("EncodedLen(%d) = %d; want %d", tc.in, encLen, tc.wantEnc)
|
|
}
|
|
if decLen != tc.wantDec {
|
|
t.Fatalf("DecodedLen(%d) = %d; want %d", encLen, decLen, tc.wantDec)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestWithoutPaddingClose(t *testing.T) {
|
|
encodings := []*Encoding{
|
|
StdEncoding,
|
|
StdEncoding.WithPadding(NoPadding),
|
|
}
|
|
|
|
for _, encoding := range encodings {
|
|
for _, testpair := range pairs {
|
|
|
|
var buf bytes.Buffer
|
|
encoder := NewEncoder(encoding, &buf)
|
|
encoder.Write([]byte(testpair.decoded))
|
|
encoder.Close()
|
|
|
|
expected := testpair.encoded
|
|
if encoding.padChar == NoPadding {
|
|
expected = strings.ReplaceAll(expected, "=", "")
|
|
}
|
|
|
|
res := buf.String()
|
|
|
|
if res != expected {
|
|
t.Errorf("Expected %s got %s; padChar=%d", expected, res, encoding.padChar)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDecodeReadAll(t *testing.T) {
|
|
encodings := []*Encoding{
|
|
StdEncoding,
|
|
StdEncoding.WithPadding(NoPadding),
|
|
}
|
|
|
|
for _, pair := range pairs {
|
|
for encIndex, encoding := range encodings {
|
|
encoded := pair.encoded
|
|
if encoding.padChar == NoPadding {
|
|
encoded = strings.ReplaceAll(encoded, "=", "")
|
|
}
|
|
|
|
decReader, err := ioutil.ReadAll(NewDecoder(encoding, strings.NewReader(encoded)))
|
|
if err != nil {
|
|
t.Errorf("NewDecoder error: %v", err)
|
|
}
|
|
|
|
if pair.decoded != string(decReader) {
|
|
t.Errorf("Expected %s got %s; Encoding %d", pair.decoded, decReader, encIndex)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDecodeSmallBuffer(t *testing.T) {
|
|
encodings := []*Encoding{
|
|
StdEncoding,
|
|
StdEncoding.WithPadding(NoPadding),
|
|
}
|
|
|
|
for bufferSize := 1; bufferSize < 200; bufferSize++ {
|
|
for _, pair := range pairs {
|
|
for encIndex, encoding := range encodings {
|
|
encoded := pair.encoded
|
|
if encoding.padChar == NoPadding {
|
|
encoded = strings.ReplaceAll(encoded, "=", "")
|
|
}
|
|
|
|
decoder := NewDecoder(encoding, strings.NewReader(encoded))
|
|
|
|
var allRead []byte
|
|
|
|
for {
|
|
buf := make([]byte, bufferSize)
|
|
n, err := decoder.Read(buf)
|
|
allRead = append(allRead, buf[0:n]...)
|
|
if err == io.EOF {
|
|
break
|
|
}
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
|
|
if pair.decoded != string(allRead) {
|
|
t.Errorf("Expected %s got %s; Encoding %d; bufferSize %d", pair.decoded, allRead, encIndex, bufferSize)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|