From b051471f8d5cc8e5b13c7259269588c010d47115 Mon Sep 17 00:00:00 2001
From: Winni Neessen <wn@neessen.net>
Date: Tue, 26 Nov 2024 12:02:15 +0100
Subject: [PATCH] Add tests for the sanitizeFilename function

This commit introduces a series of tests for the sanitizeFilename function in msgwriter_test.go. The tests cover various edge cases to ensure filenames are sanitized correctly by replacing or removing invalid characters. These additions will help maintain the integrity and reliability of filename sanitization in the codebase.
---
 msgwriter_test.go | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/msgwriter_test.go b/msgwriter_test.go
index 1b2a254..a3d2e56 100644
--- a/msgwriter_test.go
+++ b/msgwriter_test.go
@@ -676,3 +676,33 @@ func TestMsgWriter_writeBody(t *testing.T) {
 		}
 	})
 }
+
+func TestMsgWriter_sanitizeFilename(t *testing.T) {
+	tests := []struct {
+		given string
+		want  string
+	}{
+		{"test.txt", "test.txt"},
+		{"test file.txt", "test file.txt"},
+		{"test\\ file.txt", "test_ file.txt"},
+		{`"test" file.txt`, "_test_ file.txt"},
+		{`test	file	.txt`, "test_file_.txt"},
+		{"test\r\nfile.txt", "test__file.txt"},
+		{"test\x22file.txt", "test_file.txt"},
+		{"test\x2ffile.txt", "test_file.txt"},
+		{"test\x3afile.txt", "test_file.txt"},
+		{"test\x3cfile.txt", "test_file.txt"},
+		{"test\x3efile.txt", "test_file.txt"},
+		{"test\x3ffile.txt", "test_file.txt"},
+		{"test\x5cfile.txt", "test_file.txt"},
+		{"test\x7cfile.txt", "test_file.txt"},
+		{"test\x7ffile.txt", "test_file.txt"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.given+"=>"+tt.want, func(t *testing.T) {
+			if got := sanitizeFilename(tt.given); got != tt.want {
+				t.Errorf("sanitizeFilename failed, expected: %q, got: %q", tt.want, got)
+			}
+		})
+	}
+}