[ewoks] add test to insure two default graph can be converted to ewoks graph without lost

est/test/test_ewoks.py

+from ewoksorange.owsconvert import ows_to_ewoks, ewoks_to_ows
+from ewokscore.graph import TaskGraph
+
+from est.core.utils import DownloadDataset
+import unittest
+import tempfile
+import shutil
+import os
+
+
+class TestOrangeGraph(unittest.TestCase):
+    def setUp(self) -> None:
+        self.folder = tempfile.mkdtemp()
+        file_pymca = "ows_files/example_pymca.ows"
+        file_larch = "ows_files/example_larch.ows"
+
+        for file_ in (file_larch, file_pymca):
+            DownloadDataset(dataset=file_, output_folder=self.folder, timeout=2.0)
+        self._example_pymca_ows = os.path.join(self.folder, "example_pymca.ows")
+        self._example_larch_ows = os.path.join(self.folder, "example_larch.ows")
+        assert os.path.exists(self._example_larch_ows)
+        assert os.path.exists(self._example_pymca_ows)
+
+    def tearDown(self) -> None:
+        shutil.rmtree(self.folder)
+
+    def test_orange_graph_to_ewo_graph_pymca(self):
+        """test conversion of a workflow based on pymca to ewoks graph"""
+        graph = ows_to_ewoks(self._example_pymca_ows)
+        self.assertTrue(isinstance(graph, TaskGraph))
+        self.assertEqual(len(graph.start_nodes()), 1)
+        self.assertTrue("input" in graph.start_nodes())
+        for node in (
+            "input",
+            "output",
+            "normalization",
+            "exafs",
+            "k weight",
+            "fourier transform",
+        ):
+            self.assertTrue(node in graph.graph.nodes())
+        self.assertEqual(len(graph.graph.edges), 5)
+
+    def test_orange_graph_to_ewo_graph_larch(self):
+        """test conversion of a workflow based on pymca to ewoks graph"""
+        graph = ows_to_ewoks(self._example_larch_ows)
+        self.assertTrue(isinstance(graph, TaskGraph))
+        self.assertEqual(len(graph.start_nodes()), 1)
+        self.assertTrue("input" in graph.start_nodes())
+        for node in ("input", "output", "pre edge", "autobk", "xftf"):
+            self.assertTrue(node in graph.graph.nodes())
+        self.assertEqual(len(graph.graph.edges), 4)