v.db.dropcolumn: added test, thanks to Sanjeet Bhatti

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@74241 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/v.db.dropcolumn/testsuite/test_v_db_dropcolumn.py

@@ -0,0 +1,40 @@
+"""
+Created on Sun Jun 09 01:12:22 2018
+
+@author: Sanjeet Bhatti
+"""
+
+from grass.gunittest.case import TestCase
+from grass.gunittest.main import test
+from grass.gunittest.gmodules import SimpleModule
+
+from grass.script.core import run_command
+from grass.script.utils import decode
+
+
+class TestVDbDropColumn(TestCase):
+    """Test v.db.dropcolumn script"""
+
+    @classmethod
+    def setUpClass(cls):
+        """Copy vector."""
+        run_command('g.copy', vector='roadsmajor,myroads')
+
+    @classmethod
+    def tearDownClass(cls):
+        """Remove copied vector"""
+        run_command('g.remove', type='vector', name='myroads',
+                    flags='f')
+
+    def test_drop_single_column_check(self):
+        """Drop column to the attribute table"""
+        module = SimpleModule('v.db.dropcolumn', map='myroads',
+                              columns='SHAPE_LEN')
+        self.assertModule(module)
+
+        m = SimpleModule('v.info', map='myroads', flags='c')
+        self.assertModule(m)
+        self.assertNotRegexpMatches(decode(m.outputs.stdout), 'SHAPE_LEN')
+
+if __name__ == '__main__':
+    test()