From 56594c4de1f73bba72b8796026b2a2e0f6ecbdf7 Mon Sep 17 00:00:00 2001
From: Dane Strandboge <dstrandboge@influxdata.com>
Date: Wed, 8 Jan 2025 11:39:20 -0600
Subject: [PATCH] chore: test case

---
 plugins/outputs/influxdb_v2/http_test.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/plugins/outputs/influxdb_v2/http_test.go b/plugins/outputs/influxdb_v2/http_test.go
index 278e9d45b887d..dc23d3743aff8 100644
--- a/plugins/outputs/influxdb_v2/http_test.go
+++ b/plugins/outputs/influxdb_v2/http_test.go
@@ -187,6 +187,22 @@ func TestExponentialBackoffCalculationWithRetryAfter(t *testing.T) {
 	}
 }
 
+func TestHeadersDoNotOverrideConfig(t *testing.T) {
+	testURL, err := url.Parse("https://localhost:8181")
+	require.NoError(t, err)
+	c := &httpClient{
+		headers: map[string]string{
+			"Authorization": "Bearer foo",
+			"User-Agent":    "foo",
+		},
+		// URL to make Init() happy
+		url: testURL,
+	}
+	require.NoError(t, c.Init())
+	require.Equal(t, "Bearer foo", c.headers["Authorization"])
+	require.Equal(t, "foo", c.headers["User-Agent"])
+}
+
 // goos: linux
 // goarch: amd64
 // pkg: github.com/influxdata/telegraf/plugins/outputs/influxdb_v2