From a313c8a66dddff4e3842bbde5ed236f263fb932b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Guillot?= <f@miniflux.net>
Date: Tue, 17 Jun 2025 17:36:09 -0700
Subject: [PATCH] test(sanitizer): add unit test for 0x0 pixel tracker

---
 internal/reader/sanitizer/sanitizer_test.go | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/internal/reader/sanitizer/sanitizer_test.go b/internal/reader/sanitizer/sanitizer_test.go
index 67c88585..76441042 100644
--- a/internal/reader/sanitizer/sanitizer_test.go
+++ b/internal/reader/sanitizer/sanitizer_test.go
@@ -709,7 +709,7 @@ func TestImageSrcWithTrackers(t *testing.T) {
 	}
 }
 
-func TestPixelTracker(t *testing.T) {
+func Test1x1PixelTracker(t *testing.T) {
 	input := `<p><img src="https://tracker1.example.org/" height="1" width="1"> and <img src="https://tracker2.example.org/" height="1" width="1"/></p>`
 	expected := `<p> and </p>`
 	output := SanitizeHTMLWithDefaultOptions("http://example.org/", input)
@@ -719,6 +719,16 @@ func TestPixelTracker(t *testing.T) {
 	}
 }
 
+func Test0x0PixelTracker(t *testing.T) {
+	input := `<p><img src="https://tracker1.example.org/" height="0" width="0"> and <img src="https://tracker2.example.org/" height="0" width="0"/></p>`
+	expected := `<p> and </p>`
+	output := SanitizeHTMLWithDefaultOptions("http://example.org/", input)
+
+	if expected != output {
+		t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
+	}
+}
+
 func TestXmlEntities(t *testing.T) {
 	input := `<pre>echo "test" &gt; /etc/hosts</pre>`
 	expected := `<pre>echo &#34;test&#34; &gt; /etc/hosts</pre>`