add some raw json test

representation @ 1ba331cc

-Subproject commit 75addf31cb8fb44e2ecee847b09bba6a0ba5fce9
+Subproject commit 1ba331cc1bc85839813fb8d2c63400ab09f1bded

representationtest/test/test_json.py

@@ -29,12 +29,79 @@ __date__ = "19/08/2019"
 
 
 import unittest
+import tempfile
+import shutil
+import json
+import os
+from representationtest.representation import Node, Link, Scheme
+
+
+class TestSaveReadJson(unittest.TestCase):
+    """Test Json io"""
+    def setUp(self):
+        self._tmp_dir = tempfile.mkdtemp()
+        self.json_file_path = os.path.join(self._tmp_dir, 'myfile.json')
+
+        self.node1 = Node(processing_pt='print')
+        self.node2 = Node(processing_pt='print')
+        self.link = Link(self.node1, self.node2, 'mystring', 'mystring')
+
+        self.scheme = Scheme(nodes=(self.node1, self.node2), links=(self.link,))
+        self.scheme.description = 'my description'
+        self.scheme.title = 'my title'
+
+    def tearDown(self):
+        shutil.rmtree(self._tmp_dir)
+
+    def save(self, scheme):
+        scheme.save_as_json(self.json_file_path)
+
+    def testSave(self):
+        """save the json and check quickly if the json file seems valid"""
+        self.assertFalse(os.path.exists(self.json_file_path))
+        self.save(self.scheme)
+        self.assertTrue(os.path.exists(self.json_file_path))
+        # TODO: test that some nodes exists
+        with open(self.json_file_path) as json_file:
+            json_data = json.load(json_file)
+        self.assertTrue(Scheme._JSON_TITLE in json_data)
+        self.assertTrue(Scheme._JSON_DESCRIPTION in json_data)
+        self.assertTrue(Scheme._JSON_LINKS in json_data)
+        self.assertTrue(Scheme._JSON_NODES in json_data)
+        self.assertTrue(len(json_data[Scheme._JSON_NODES]) == 2)
+        self.assertTrue(len(json_data[Scheme._JSON_LINKS]) == 1)
+
+    def testRead(self):
+        """
+        Save the scheme to json then read it and make sure not main information
+        is lost between those process
+        """
+        self.save(self.scheme)
+        self.assertTrue(os.path.exists(self.json_file_path))
+        new_scheme = Scheme.from_json_file(self.json_file_path)
+        # check scheme metadata
+        self.assertTrue(new_scheme.description == self.scheme.description)
+        self.assertTrue(new_scheme.title == self.scheme.title)
+        # check nodes
+        original_scheme_nodes_ids = self.scheme.nodes_dict.keys()
+        new_scheme_nodes_ids = new_scheme.nodes_dict.keys()
+        self.assertTrue(original_scheme_nodes_ids == new_scheme_nodes_ids)
+        for node_id in original_scheme_nodes_ids:
+            self.assertTrue(self.scheme.nodes_dict[node_id].process_pt == new_scheme.nodes_dict[node_id].process_pt)
+        # check links
+        self.assertTrue(new_scheme.links.keys() == self.scheme.links.keys())
+        for ori_link in self.scheme.links.values():
+            new_link = new_scheme.links[ori_link.id]
+            self.assertTrue(ori_link.source_node_id == new_link.source_node_id)
+            self.assertTrue(ori_link.sink_node_id == new_link.sink_node_id)
+            self.assertTrue(ori_link.source_channel == new_link.source_channel)
+            self.assertTrue(ori_link.sink_channel == new_link.sink_channel)
 
 
 def suite():
     test_suite = unittest.TestSuite()
-    # for ui in (TestCallbackCases, TestGenericCases, ):
-    #     test_suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(ui))
+    for ui in (TestSaveReadJson,):
+        test_suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(ui))
     return test_suite