43 lines
998 B
Go
43 lines
998 B
Go
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// Copyright 2020 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package library
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import (
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"fmt"
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"io"
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"regexp"
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"testing"
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)
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// NewLoggerReader wraps an io.Reader to log its input and output. It also performs some heuristic token masking.
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func NewLoggerReader(t *testing.T, name string, reader io.Reader) io.Reader {
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t.Helper()
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return &testlogReader{t: t, name: name, r: reader}
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}
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type testlogReader struct {
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t *testing.T
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name string
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r io.Reader
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}
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func (l *testlogReader) Read(p []byte) (n int, err error) {
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l.t.Helper()
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n, err = l.r.Read(p)
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if err != nil {
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l.t.Logf("%s > %q: %v", l.name, maskTokens(p[0:n]), err)
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} else {
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l.t.Logf("%s > %q", l.name, maskTokens(p[0:n]))
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}
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return
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}
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var tokenLike = regexp.MustCompile(`(?mi)[a-zA-Z0-9._-]{30,}|[a-zA-Z0-9]{20,}`)
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func maskTokens(in []byte) string {
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return tokenLike.ReplaceAllStringFunc(string(in), func(t string) string {
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return fmt.Sprintf("[...%d bytes...]", len(t))
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})
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}
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