consul/logger/log_writer_test.go

52 lines
789 B
Go

package logger
import (
"testing"
)
type MockLogHandler struct {
logs []string
}
func (m *MockLogHandler) HandleLog(l string) {
m.logs = append(m.logs, l)
}
func TestLogWriter(t *testing.T) {
h := &MockLogHandler{}
w := NewLogWriter(4)
// Write some logs
w.Write([]byte("one")) // Gets dropped!
w.Write([]byte("two"))
w.Write([]byte("three"))
w.Write([]byte("four"))
w.Write([]byte("five"))
// Register a handler, sends old!
w.RegisterHandler(h)
w.Write([]byte("six"))
w.Write([]byte("seven"))
// Deregister
w.DeregisterHandler(h)
w.Write([]byte("eight"))
w.Write([]byte("nine"))
out := []string{
"two",
"three",
"four",
"five",
"six",
"seven",
}
for idx := range out {
if out[idx] != h.logs[idx] {
t.Fatalf("mismatch %v", h.logs)
}
}
}