diff --git a/httpr_test.go b/httpr_test.go
new file mode 100644
index 0000000..860d46a
--- /dev/null
+++ b/httpr_test.go
@@ -0,0 +1,49 @@
+package httpr_test
+
+import (
+	"net/http"
+	"os"
+	"testing"
+
+	"git.arav.su/Arav/httpr"
+)
+
+func Test(t *testing.T) {
+	r := httpr.New()
+
+	err := r.Handler(http.MethodGet, "/", func(w http.ResponseWriter, r *http.Request) {})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = r.Handler(http.MethodGet, "/", func(w http.ResponseWriter, r *http.Request) {})
+	if err == nil {
+		t.Fatal("path redefinition wasn't catched")
+	}
+
+	err = r.Handler(http.MethodGet, "/a/b", func(w http.ResponseWriter, r *http.Request) {})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = r.Handler(http.MethodGet, "/:a/:b", func(w http.ResponseWriter, r *http.Request) {})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = r.Handler(http.MethodGet, "/:a/:lol", func(w http.ResponseWriter, r *http.Request) {})
+	if err == nil {
+		t.Fatal("here is a different last param name is supplied, should be catched")
+	}
+
+	err = r.ServeStatic("/assets/*filepath", http.FS(os.DirFS(".")))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = r.ServeStatic("/assets/*filepath/*filepath", nil)
+	if err == nil {
+		t.Fatal("multiple catch-all params wasn't catched")
+	}
+
+}