[test] add nodeinfo tests

tests/test_nodeinfo.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+"""Test App nodeinfo"""
+
+
+def test_wellknow_nodeinfo(mocker, client):
+    """Test app well-known nodeinfo ath."""
+    mocker.patch("demo.config.BASE_URL", "foo")
+    response = client.get("/.well-known/nodeinfo")
+    assert response.json["links"][0]["href"] == "foo/nodeinfo/2.0"
+
+
+def test_nodeinfo(client):
+    """Test app nodeinfo."""
+    response = client.get("/nodeinfo/2.0")
+    assert response.json["software"]["name"] == "COSCUP-demo"