Fix rendering of wiki page list if wiki repo contains other files (#3454)

* Fix rendering of wiki page list if wiki repo contains other files

* Improve wiki filename tests

1 files changed, 15 insertions, 0 deletions

diff --git a/models/error.go b/models/error.go
index cd96fa9256..a1c24f4ec0 100644
--- a/models/error.go
+++ b/models/error.go
@@ -216,6 +216,21 @@ func (err ErrWikiReservedName) Error() string {
 	return fmt.Sprintf("wiki title is reserved: %s", err.Title)
 }
 
+// ErrWikiInvalidFileName represents an invalid wiki file name.
+type ErrWikiInvalidFileName struct {
+	FileName string
+}
+
+// IsErrWikiInvalidFileName checks if an error is an ErrWikiInvalidFileName.
+func IsErrWikiInvalidFileName(err error) bool {
+	_, ok := err.(ErrWikiInvalidFileName)
+	return ok
+}
+
+func (err ErrWikiInvalidFileName) Error() string {
+	return fmt.Sprintf("Invalid wiki filename: %s", err.FileName)
+}
+
 // __________     ___.   .__  .__          ____  __.
 // \______   \__ _\_ |__ |  | |__| ____   |    |/ _|____ ___.__.
 //  |     ___/  |  \ __ \|  | |  |/ ___\  |      <_/ __ <   |  |