new tests for edit_attrs and command line

this commit includes new tests for creating straditizer from the command line

tests/widgets/test_straditizer_widgets.py

@@ -0,0 +1,49 @@
+"""Test module for the :mod:`straditizer.widgets` module"""
+import _base_testing as bt
+import unittest
+import numpy as np
+
+
+class StraditizerWidgetsTest(bt.StraditizeWidgetsTestCase):
+    """Test case for the :class:`straditizer.widgets.StraditizerWidgets`"""
+
+    def test_edit_attrs(self):
+        """Test editing the attributes"""
+        self.open_img()
+        n = len(self.window.dataframeeditors)
+        editor, combo = self.straditizer_widgets.edit_attrs()
+        self.assertEqual(len(self.window.dataframeeditors), n+1)
+        combo.setCurrentText('latitude')
+        self.assertIn('latitude', self.straditizer.attrs.index)
+
+    def test_create_straditizer_from_args_01(self):
+        fname = self.get_fig_path('basic_diagram.png')
+        xlim = np.array([9, 30])
+        ylim = np.array([10, 30])
+        self.straditizer_widgets.create_straditizer_from_args(
+            [fname],
+            None,  # project
+            xlim, ylim,
+            False,  # full
+            'area'  # reader_type
+            )
+        self.assertIsNotNone(self.straditizer)
+        self.assertEqual(list(self.straditizer.data_xlim), list(xlim))
+        self.assertEqual(list(self.straditizer.data_ylim), list(ylim))
+
+    def test_create_straditizer_from_args_02(self):
+        fname = self.get_fig_path('basic_diagram.png')
+        self.straditizer_widgets.create_straditizer_from_args(
+            [fname],
+            None,  # project
+            None, None,  # xlim, ylim
+            True,  # full
+            'area'  # reader_type
+            )
+        self.assertIsNotNone(self.straditizer)
+        self.assertEqual(list(self.straditizer.data_xlim), [0, 40])
+        self.assertEqual(list(self.straditizer.data_ylim), [0, 40])
+
+
+if __name__ == '__main__':
+    unittest.main()