From fd9cbad5db327f58320050343cb97320e7a633da Mon Sep 17 00:00:00 2001
From: Kir Kolyshkin <kolyshkin@gmail.com>
Date: Mon, 5 Aug 2024 12:03:51 -0700
Subject: [PATCH] feat: add exception for mime.ErrInvalidMediaParameter

It is documented ([1]) that mime.ParseMediaType can return
mime.ErrInvalidMediaParameter error, so it's not a bug to perform a
direct comparison.

[1]: https://pkg.go.dev/mime#ParseMediaType
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
---
 errorlint/allowed.go                      | 2 ++
 errorlint/testdata/src/allowed/allowed.go | 8 ++++++++
 2 files changed, 10 insertions(+)

diff --git a/errorlint/allowed.go b/errorlint/allowed.go
index 791e50f..cf48170 100644
--- a/errorlint/allowed.go
+++ b/errorlint/allowed.go
@@ -57,6 +57,8 @@ func setDefaultAllowedErrors() {
 		{Err: "io.ErrUnexpectedEOF", Fun: "io.ReadAtLeast"},
 		{Err: "io.EOF", Fun: "io.ReadFull"},
 		{Err: "io.ErrUnexpectedEOF", Fun: "io.ReadFull"},
+		// pkg/mime
+		{Err: "mime.ErrInvalidMediaParameter", Fun: "mime.ParseMediaType"},
 		// pkg/net/http
 		{Err: "net/http.ErrServerClosed", Fun: "(*net/http.Server).ListenAndServe"},
 		{Err: "net/http.ErrServerClosed", Fun: "(*net/http.Server).ListenAndServeTLS"},
diff --git a/errorlint/testdata/src/allowed/allowed.go b/errorlint/testdata/src/allowed/allowed.go
index 3090fb3..e3ff1ce 100644
--- a/errorlint/testdata/src/allowed/allowed.go
+++ b/errorlint/testdata/src/allowed/allowed.go
@@ -11,6 +11,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"mime"
 	"mime/multipart"
 	"net/http"
 	"os"
@@ -283,6 +284,13 @@ func MIMEMultipartReadFrom(r io.Reader, boundary string, maxMemory int64) {
 	}
 }
 
+func MimeParseMediaType(contentType string) {
+	_, _, err := mime.ParseMediaType(contentType)
+	if err == mime.ErrInvalidMediaParameter {
+		fmt.Println(err)
+	}
+}
+
 func SyscallErrors() {
 	err := syscall.Chmod("/dev/null", 0666)
 	if err == syscall.EINVAL {