92 lines
1.9 KiB
Go
92 lines
1.9 KiB
Go
// The Test package is used for testing logrus.
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// It provides a simple hooks which register logged messages.
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package test
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import (
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"io/ioutil"
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"sync"
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"github.com/sirupsen/logrus"
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)
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// Hook is a hook designed for dealing with logs in test scenarios.
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type Hook struct {
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// Entries is an array of all entries that have been received by this hook.
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// For safe access, use the AllEntries() method, rather than reading this
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// value directly.
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Entries []logrus.Entry
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mu sync.RWMutex
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}
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// NewGlobal installs a test hook for the global logger.
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func NewGlobal() *Hook {
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hook := new(Hook)
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logrus.AddHook(hook)
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return hook
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}
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// NewLocal installs a test hook for a given local logger.
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func NewLocal(logger *logrus.Logger) *Hook {
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hook := new(Hook)
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logger.AddHook(hook)
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return hook
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}
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// NewNullLogger creates a discarding logger and installs the test hook.
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func NewNullLogger() (*logrus.Logger, *Hook) {
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logger := logrus.New()
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logger.Out = ioutil.Discard
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return logger, NewLocal(logger)
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}
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func (t *Hook) Fire(e *logrus.Entry) error {
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t.mu.Lock()
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defer t.mu.Unlock()
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t.Entries = append(t.Entries, *e)
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return nil
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}
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func (t *Hook) Levels() []logrus.Level {
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return logrus.AllLevels
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}
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// LastEntry returns the last entry that was logged or nil.
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func (t *Hook) LastEntry() *logrus.Entry {
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t.mu.RLock()
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defer t.mu.RUnlock()
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i := len(t.Entries) - 1
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if i < 0 {
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return nil
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}
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return &t.Entries[i]
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}
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// AllEntries returns all entries that were logged.
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func (t *Hook) AllEntries() []*logrus.Entry {
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t.mu.RLock()
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defer t.mu.RUnlock()
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// Make a copy so the returned value won't race with future log requests
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entries := make([]*logrus.Entry, len(t.Entries))
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for i := 0; i < len(t.Entries); i++ {
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// Make a copy, for safety
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entries[i] = &t.Entries[i]
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}
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return entries
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}
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// Reset removes all Entries from this test hook.
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func (t *Hook) Reset() {
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t.mu.Lock()
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defer t.mu.Unlock()
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t.Entries = make([]logrus.Entry, 0)
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}
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