diff --git a/pixiv/user.go b/pixiv/user.go
index 6ea7c34..95b7a18 100644
--- a/pixiv/user.go
+++ b/pixiv/user.go
@@ -20,7 +20,7 @@ const (
 	UserArt_AnyAlt       UserArtCategory = "artworks"
 	UserArt_Illustration UserArtCategory = "illustrations"
 	UserArt_Manga        UserArtCategory = "manga"
-	UserArt_Bookmarked   UserArtCategory = "bookmarks" // what this user has bookmarked; not art by this user
+	UserArt_Bookmarks    UserArtCategory = "bookmarks" // what this user has bookmarked; not art by this user
 	UserArt_Novel        UserArtCategory = "novels"
 )
 
@@ -29,9 +29,9 @@ func (s UserArtCategory) Validate() error {
 		s != UserArt_AnyAlt &&
 		s != UserArt_Illustration &&
 		s != UserArt_Manga &&
-		s != UserArt_Bookmarked &&
+		s != UserArt_Bookmarks &&
 		s != UserArt_Novel {
-		return fmt.Errorf("Invalid work category: %#v. "+`Only "%s", "%s", "%s", "%s", "%s" and "%s" are available`, s, UserArt_Any, UserArt_AnyAlt, UserArt_Illustration, UserArt_Manga, UserArt_Bookmarked, UserArt_Novel)
+		return fmt.Errorf("Invalid work category: %#v. "+`Only "%s", "%s", "%s", "%s", "%s" and "%s" are available`, s, UserArt_Any, UserArt_AnyAlt, UserArt_Illustration, UserArt_Manga, UserArt_Bookmarks, UserArt_Novel)
 	} else {
 		return nil
 	}
@@ -267,7 +267,7 @@ func GetUserArtwork(c *fiber.Ctx, id string, category UserArtCategory, page int,
 		return user, err
 	}
 
-	if category == "bookmarks" {
+	if category == UserArt_Bookmarks {
 		// Bookmarks
 		works, count, err := GetUserBookmarks(c, id, "show", page)
 		if err != nil {
@@ -278,7 +278,7 @@ func GetUserArtwork(c *fiber.Ctx, id string, category UserArtCategory, page int,
 
 		// Public bookmarks count
 		user.ArtworksCount = count
-	} else if category == "novels" {
+	} else if category == UserArt_Novel {
 		ids, count, err := GetUserArtworksID(c, id, category, page)
 		if err != nil {
 			return user, err
diff --git a/routes/artwork-multi.go b/routes/artworkMulti.go
similarity index 96%
rename from routes/artwork-multi.go
rename to routes/artworkMulti.go
index b980cbc..354b27c 100644
--- a/routes/artwork-multi.go
+++ b/routes/artworkMulti.go
@@ -58,7 +58,7 @@ func ArtworkMultiPage(c *fiber.Ctx) error {
 		return err_global
 	}
 
-	return c.Render("artwork-multi", fiber.Map{
+	return c.Render("artworkMulti", fiber.Map{
 		"Artworks": artworks,
 		"Title":    fmt.Sprintf("(%d images)", len(artworks)),
 	})
diff --git a/routes/user.go b/routes/user.go
index b893cf0..5e78faf 100644
--- a/routes/user.go
+++ b/routes/user.go
@@ -41,7 +41,7 @@ func fetchData(c *fiber.Ctx, getTags bool) (userPageData, error) {
 	var worksCount int
 	var worksPerPage float64
 
-	if category == core.UserArt_Bookmarked {
+	if category == core.UserArt_Bookmarks {
 		worksPerPage = 48.0
 	} else {
 		worksPerPage = 30.0
@@ -75,7 +75,9 @@ func UserAtomFeed(c *fiber.Ctx) error {
 		return err
 	}
 
-	err = c.Render("user.atom", fiber.Map{
+	c.Context().SetContentType("application/atom+xml")
+
+	return c.Render("user.atom", fiber.Map{
 		"URL":       string(c.Request().RequestURI()),
 		"Title":     data.user.Name,
 		"User":      data.user,
@@ -85,11 +87,4 @@ func UserAtomFeed(c *fiber.Ctx) error {
 		"Page":      data.page,
 		// "MetaImage": data.user.BackgroundImage,
 	}, "")
-	if err != nil {
-		return err
-	}
-
-	c.Context().SetContentType("application/atom+xml")
-
-	return nil
 }
diff --git a/semgrep.yml b/semgrep.yml
index 3a1afd7..12e3854 100644
--- a/semgrep.yml
+++ b/semgrep.yml
@@ -87,6 +87,14 @@ rules:
   message: "raw UserArtCategory string"
   languages: [go]
   severity: WARNING
-  pattern-either:
+  patterns:
   - pattern: |
-      ($A : UserArtCategory) == "$B"
+      ($A : UserArtCategory) == $B
+  - pattern-not: |
+      ($A : UserArtCategory) == ($B : UserArtCategory)
+- id: rule-7
+  message: "c.Render"
+  languages: [go]
+  severity: INFO
+  pattern: |
+    c.Render(...)
diff --git a/main_test.go b/tests/integration/main_test.go
similarity index 99%
rename from main_test.go
rename to tests/integration/main_test.go
index d0817d4..3cb770d 100644
--- a/main_test.go
+++ b/tests/integration/main_test.go
@@ -1,4 +1,4 @@
-package main_test
+package main
 
 import (
 	"log"
diff --git a/tests/readme b/tests/readme
new file mode 100644
index 0000000..02c8e9f
--- /dev/null
+++ b/tests/readme
@@ -0,0 +1,6 @@
+# About testing
+
+There are two places where data transformations aren't type checked.
+
+1. passing data from Go to Jet (layout engine)
+2. whether response from pixiv API fit our JSON schema or not
diff --git a/tests/test.go b/tests/test.go
deleted file mode 100644
index ca8701d..0000000
--- a/tests/test.go
+++ /dev/null
@@ -1 +0,0 @@
-package tests
diff --git a/views/pages/artwork-multi.jet.html b/views/pages/artworkMulti.jet.html
similarity index 100%
rename from views/pages/artwork-multi.jet.html
rename to views/pages/artworkMulti.jet.html