ensure error is returned on logging to a closed writer

stdlog_handler_test.go

@@ -3,6 +3,7 @@ package clog
 import (
  "bytes"
  "os"
+ "path/filepath"
  "sync"
  "testing"
 
@@ -78,3 +79,19 @@ func TestChangeOutput(t *testing.T) {
  assert.NoError(t, err)
  assert.Equal(t, "DEBUG message\n", buffer.String())
 }
+
+func TestLogOnClosedOutput(t *testing.T) {
+ logFile := filepath.Join(t.TempDir(), "file.log")
+ file, err := os.Create(logFile)
+ require.NoError(t, err)
+
+ handler := NewStandardLogHandler(file, "", 0)
+ err = handler.Close()
+ assert.NoError(t, err)
+
+ err = handler.LogEntry(LogEntry{
+ Level: LevelDebug,
+ Values: []interface{}{"message"},
+ })
+ assert.Error(t, err)
+}