Read user profile display from profile table

server/db/mysql/user_identity_test.go

@@ -3,7 +3,10 @@
 
 package mysql
 
-import "testing"
+import (
+	"database/sql"
+	"testing"
+)
 
 func TestNormalizeUserPhone(t *testing.T) {
 	for input, want := range map[string]string{
@@ -23,3 +26,34 @@ func TestNormalizeUserPhone(t *testing.T) {
 		t.Fatal("invalid phone unexpectedly accepted")
 	}
 }
+
+func TestProfilePublicFromFields(t *testing.T) {
+	public := profilePublicFromFields(map[string]any{
+		"fn":             "旧昵称",
+		"name":           "旧昵称",
+		"nickname":       "旧昵称",
+		"display_name":   "旧昵称",
+		"avatar_file_id": "old_avatar",
+		"photo":          "old_photo",
+		"public_account": "usrAccount",
+	}, sql.NullString{String: "新昵称", Valid: true}, sql.NullString{String: "file_avatar_1", Valid: true}).(map[string]any)
+
+	for _, key := range []string{"fn", "name", "nickname", "display_name"} {
+		if public[key] != "新昵称" {
+			t.Fatalf("nickname field %s not overlaid: %#v", key, public)
+		}
+	}
+	if public["avatar_file_id"] != "file_avatar_1" || public["public_account"] != "usrAccount" {
+		t.Fatalf("profile public not overlaid: %#v", public)
+	}
+
+	public = profilePublicFromFields(public, sql.NullString{Valid: true}, sql.NullString{Valid: true}).(map[string]any)
+	for _, key := range []string{"fn", "name", "nickname", "display_name", "avatar_file_id", "photo", "avatar"} {
+		if _, ok := public[key]; ok {
+			t.Fatalf("field %s should be hidden by empty profile value: %#v", key, public)
+		}
+	}
+	if public["public_account"] != "usrAccount" {
+		t.Fatalf("unrelated public field changed: %#v", public)
+	}
+}