tests: add Python resourcegraph tests

Problem: there are no tests for the Python resourcegraph class.

Add some basic tests.

t/CMakeLists.txt

@@ -85,6 +85,7 @@ set(ALL_TESTS
   t6002-graph-hwloc.t
   t8001-util-ion-R.t
   t9001-golang-basic.t
+  python/t10001-resourcegraph.py
   )
 foreach(test ${ALL_TESTS})
   flux_add_test(NAME ${test}

t/Makefile.am

@@ -102,7 +102,8 @@ TESTS = \
     t6001-match-formats.t \
     t6002-graph-hwloc.t \
     t8001-util-ion-R.t \
-    t9001-golang-basic.t
+    t9001-golang-basic.t \
+    python/t10001-resourcegraph.py
 
 check_SCRIPTS = $(TESTS)
 

t/python/t10001-resourcegraph.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+
+###############################################################
+# Copyright 2023 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+
+import unittest
+import json
+
+from fluxion.resourcegraph.V1 import (
+    FluxionResourceGraphV1,
+    FluxionResourcePoolV1,
+    FluxionResourceRelationshipV1,
+)
+
+from pycotap import TAPTestRunner
+
+RV1 = {
+    "version": 1,
+    "execution": {
+        "R_lite": [{"rank": "0", "children": {"core": "0-4"}}],
+        "starttime": 0.0,
+        "expiration": 0.0,
+        "nodelist": ["compute01"],
+    },
+}
+
+RV1_2 = {
+    "version": 1,
+    "execution": {
+        "R_lite": [{"rank": "0-10", "children": {"gpu": "0-1", "core": "0-7"}}],
+        "starttime": 0.0,
+        "expiration": 0.0,
+        "nodelist": ["compute[0-10]"],
+    },
+}
+
+
+class TestResourceGraph(unittest.TestCase):
+    """Test for the ResourceGraph class."""
+
+    def _check_metadata(self, metadata):
+        if metadata["type"] in ("node", "core", "gpu", "cluster"):
+            self.assertEqual(metadata["unit"], "")
+            self.assertEqual(metadata["size"], 1)
+            self.assertEqual(metadata["properties"], [])
+        else:
+            raise ValueError(metadata["type"])
+
+    def test_basic(self):
+        graph = FluxionResourceGraphV1(RV1)
+        self.assertTrue(graph.is_directed())
+        j = graph.to_JSON()
+        json.dumps(j)  # make sure it doesn't throw an error
+        self.assertTrue(j["graph"]["directed"])
+        self.assertEqual(len(j["graph"]["nodes"]), len(graph.get_nodes()))
+        self.assertEqual(len(j["graph"]["edges"]), len(graph.get_edges()))
+        for node in graph.get_nodes():
+            self._check_metadata(node.get_metadata())
+
+    def test_basic_2(self):
+        graph = FluxionResourceGraphV1(RV1_2)
+        self.assertTrue(graph.is_directed())
+        j = graph.to_JSON()
+        json.dumps(j)
+        self.assertTrue(j["graph"]["directed"])
+        self.assertEqual(len(j["graph"]["nodes"]), len(graph.get_nodes()))
+        self.assertEqual(len(j["graph"]["edges"]), len(graph.get_edges()))
+        for node in graph.get_nodes():
+            self._check_metadata(node.get_metadata())
+
+
+unittest.main(testRunner=TAPTestRunner())