Fix session cleanup on error paths

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/utils/error_test.go

@@ -0,0 +1,39 @@
+package honokautils
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestInternalErrorContentIsSanitized(t *testing.T) {
+	content := NewInternalErrorContent()
+
+	if content.Exception != "InternalServerError" {
+		t.Fatalf("unexpected exception: %q", content.Exception)
+	}
+	if content.Message != http.StatusText(http.StatusInternalServerError) {
+		t.Fatalf("unexpected message: %q", content.Message)
+	}
+}
+
+func TestPanicContentIsSanitized(t *testing.T) {
+	content := NewPanicContent()
+
+	if content != NewInternalErrorContent() {
+		t.Fatalf("panic content exposes a distinct internal detail: %#v", content)
+	}
+}
+
+func TestIsMainLoginEndpoint(t *testing.T) {
+	for _, path := range []string{"/main.php/login/authkey", "/main.php/login/login"} {
+		if !IsMainLoginEndpoint(path) {
+			t.Fatalf("expected %q to be a main.php login endpoint", path)
+		}
+	}
+
+	for _, path := range []string{"/login/authkey", "/main.php/user/userInfo"} {
+		if IsMainLoginEndpoint(path) {
+			t.Fatalf("expected %q not to be a main.php login endpoint", path)
+		}
+	}
+}