TST: add test for plantuml

src/caosdb/utils/plantuml.py

@@ -377,7 +377,9 @@ def to_graphics(recordtypes: list[db.Entity], filename: str,
 
             if os.system(cmd) != 0:  # TODO: replace with subprocess.run
                 raise Exception("An error occured during the execution of "
-                                "plantuml. "
-                                "Is plantuml installed?")
+                                "plantuml when using the format {}. "
+                                "Is plantuml installed? "
+                                "You might want to dry a different format.".format(format))
+            # copy only the final product into the target directory
             shutil.copy(os.path.join(td, filename + "." + extension),
                         output_dirname)

unittests/test_plantuml.py

+#!/usr/bin/env python3
+# encoding: utf-8
+#
+# ** header v3.0
+# This file is a part of the CaosDB Project.
+#
+# Copyright (C) 2022 Indiscale GmbH <info@indiscale.com>
+# Copyright (C) 2022 Henrik tom Wörden <h.tomwoerden@indiscale.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+# ** end header
+#
+
+"""
+test plantuml utility
+"""
+
+import tempfile
+import pytest
+import caosdb as db
+import shutil
+from caosdb.utils.plantuml import to_graphics
+
+
+@pytest.fixture
+def setup_n_teardown(autouse=True):
+
+    with tempfile.TemporaryDirectory() as td:
+        global output
+        output = td
+        yield
+
+
+@pytest.fixture
+def entities():
+    return [db.RecordType(name="TestRT1").add_property("testprop"),
+            db.RecordType(name="TestRT2").add_property("testprop2"),
+            db.Property("testprop")]
+
+
+@pytest.mark.skipif(shutil.which('plantuml') is None, reason="No plantuml found")
+def test_to_graphics1(entities, setup_n_teardown):
+    to_graphics(entities, "data_model", output_dirname=output)
+
+
+@pytest.mark.skipif(shutil.which('plantuml') is None, reason="No plantuml found")
+def test_to_graphics2(entities, setup_n_teardown):
+    to_graphics(entities, "data_model", output_dirname=output, formats=["tpng", "tsvg"],
+                add_properties=False, add_legend=False, style="salexan")