Official Go implementation of the Ethereum protocol
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go-ethereum/log/logger_test.go

67 lines
2.0 KiB

package log
import (
"bytes"
"os"
"strings"
"testing"
)
// TestLoggingWithTrace checks that if BackTraceAt is set, then the
// gloghandler is capable of spitting out a stacktrace
func TestLoggingWithTrace(t *testing.T) {
defer stackEnabled.Store(stackEnabled.Load())
out := new(bytes.Buffer)
logger := New()
{
glog := NewGlogHandler(StreamHandler(out, TerminalFormat(false)))
glog.Verbosity(LvlTrace)
if err := glog.BacktraceAt("logger_test.go:24"); err != nil {
t.Fatal(err)
}
logger.SetHandler(glog)
}
logger.Trace("a message", "foo", "bar") // Will be bumped to INFO
have := out.String()
if !strings.HasPrefix(have, "INFO") {
t.Fatalf("backtraceat should bump level to info: %s", have)
}
// The timestamp is locale-dependent, so we want to trim that off
// "INFO [01-01|00:00:00.000] a messag ..." -> "a messag..."
have = strings.Split(have, "]")[1]
wantPrefix := " a message\n\ngoroutine"
if !strings.HasPrefix(have, wantPrefix) {
t.Errorf("\nhave: %q\nwant: %q\n", have, wantPrefix)
}
}
// TestLoggingWithVmodule checks that vmodule works.
func TestLoggingWithVmodule(t *testing.T) {
defer stackEnabled.Store(stackEnabled.Load())
out := new(bytes.Buffer)
logger := New()
{
glog := NewGlogHandler(StreamHandler(out, TerminalFormat(false)))
glog.Verbosity(LvlCrit)
logger.SetHandler(glog)
logger.Warn("This should not be seen", "ignored", "true")
glog.Vmodule("logger_test.go=5")
}
logger.Trace("a message", "foo", "bar")
have := out.String()
// The timestamp is locale-dependent, so we want to trim that off
// "INFO [01-01|00:00:00.000] a messag ..." -> "a messag..."
have = strings.Split(have, "]")[1]
want := " a message foo=bar\n"
if have != want {
t.Errorf("\nhave: %q\nwant: %q\n", have, want)
}
}
func BenchmarkTraceLogging(b *testing.B) {
Root().SetHandler(LvlFilterHandler(LvlInfo, StreamHandler(os.Stderr, TerminalFormat(true))))
b.ResetTimer()
for i := 0; i < b.N; i++ {
Trace("a message", "v", i)
}
}