Add test file for plot_utils.py (#1125)

foqus_lib/framework/sdoe/test/test_plot_utils.py

@@ -0,0 +1,39 @@
+#################################################################################
+# FOQUS Copyright (c) 2012 - 2023, by the software owners: Oak Ridge Institute
+# for Science and Education (ORISE), TRIAD National Security, LLC., Lawrence
+# Livermore National Security, LLC., The Regents of the University of
+# California, through Lawrence Berkeley National Laboratory, Battelle Memorial
+# Institute, Pacific Northwest Division through Pacific Northwest National
+# Laboratory, Carnegie Mellon University, West Virginia University, Boston
+# University, the Trustees of Princeton University, The University of Texas at
+# Austin, URS Energy & Construction, Inc., et al.  All rights reserved.
+#
+# Please see the file LICENSE.md for full copyright and license information,
+# respectively. This file is also available online at the URL
+# "https://github.com/CCSI-Toolset/FOQUS".
+#################################################################################
+import pytest
+from foqus_lib.framework.sdoe import plot_utils
+from unittest import mock
+from importlib import resources
+from pathlib import Path
+
+
+@mock.patch("foqus_lib.framework.sdoe.plot_utils.plt")
+def test_plot(fake_plt: mock.MagicMock):
+
+    fake_fig = mock.MagicMock()
+    fake_axes = mock.MagicMock()
+    fake_plt.subplots.return_value = (fake_fig, fake_axes)
+    fname = "candidates_usf.csv"
+    copy_from_package(fname)
+    scatter_label = "something"
+
+    plot_utils.plot(fname=fname, scatter_label=scatter_label)
+
+    assert fake_plt.show.call_count > 0
+
+
+def copy_from_package(file_name: str) -> None:
+    content = resources.read_text(__package__, file_name)
+    Path(file_name).write_text(content)