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51 lines
1.4 KiB
51 lines
1.4 KiB
package log
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import (
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"testing"
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"github.com/rs/zerolog"
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)
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// NewTestingLogger converts a testing.T into a logging interface to
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// make test failures and verbose provide better feedback associated
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// with test failures. This logging instance is safe for use from
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// multiple threads, but in general you should create one of these
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// loggers ONCE for each *testing.T instance that you interact with.
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//
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// By default it collects only ERROR messages, or DEBUG messages in
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// verbose mode, and relies on the underlying behavior of
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// testing.T.Log()
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//
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// Users should be careful to ensure that no calls to this logger are
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// made in goroutines that are running after (which, by the rules of
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// testing.TB will panic.)
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func NewTestingLogger(t testing.TB) Logger {
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level := LogLevelError
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if testing.Verbose() {
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level = LogLevelDebug
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}
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return NewTestingLoggerWithLevel(t, level)
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}
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// NewTestingLoggerWithLevel creates a testing logger instance at a
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// specific level that wraps the behavior of testing.T.Log().
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func NewTestingLoggerWithLevel(t testing.TB, level string) Logger {
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logLevel, err := zerolog.ParseLevel(level)
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if err != nil {
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t.Fatalf("failed to parse log level (%s): %v", level, err)
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}
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return defaultLogger{
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Logger: zerolog.New(newSyncWriter(testingWriter{t})).Level(logLevel),
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}
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}
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type testingWriter struct {
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t testing.TB
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}
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func (tw testingWriter) Write(in []byte) (int, error) {
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tw.t.Log(string(in))
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return len(in), nil
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}
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