diff --git a/configs_test.go b/configs_test.go
index def9e61..230fbfa 100644
--- a/configs_test.go
+++ b/configs_test.go
@@ -1,6 +1,7 @@
 package logrusiowriter
 
 import (
+	"bytes"
 	"testing"
 
 	"github.com/sirupsen/logrus"
@@ -51,4 +52,73 @@ func TestWithConfig(t *testing.T) {
 			t.Errorf("Error provided to OnLevelParseError should not be nil")
 		}
 	})
+
+	t.Run("trimming", func(t *testing.T) {
+		const newLineAppendedByLogrus = "\n"
+		for _, tc := range []struct {
+			desc     string
+			trimming bool
+			input    string
+			expected string
+		}{
+			{
+				desc:     "zerolength with trimming",
+				trimming: true,
+				input:    "",
+				expected: "level=info" + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "zerolength without trimming",
+				trimming: false,
+				input:    "",
+				expected: "level=info" + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "only newline with trimming",
+				trimming: true,
+				input:    "\n",
+				expected: "level=info" + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "only newline without trimming",
+				trimming: false,
+				input:    "\n",
+				expected: `level=info msg="\n"` + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "with trailing newline and trimming",
+				trimming: true,
+				input:    "message\n",
+				expected: "level=info msg=message" + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "with trailing newline and no trimming",
+				trimming: false,
+				input:    "message\n",
+				expected: `level=info msg="message\n"` + newLineAppendedByLogrus,
+			},
+			{
+				desc:     "no newline with trimming",
+				trimming: true,
+				input:    "message",
+				expected: "level=info msg=message" + newLineAppendedByLogrus,
+			},
+		} {
+			t.Run(tc.desc, func(t *testing.T) {
+				buf := &bytes.Buffer{}
+
+				bufLogger := logrus.New()
+				bufLogger.SetOutput(buf)
+				bufLogger.Formatter.(*logrus.TextFormatter).DisableTimestamp = true
+
+				writer := New(WithLogger(bufLogger), WithTrailingNewLineTrimming(tc.trimming))
+
+				_, _ = writer.Write([]byte(tc.input))
+
+				if buf.String() != tc.expected {
+					t.Errorf("Unexpected output\nExpected: '%s'\nGot:      '%s'", tc.expected, buf.String())
+				}
+			})
+		}
+	})
 }