db.dropcolumn: added test, thanks to Sanjeet Bhatti

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@74257 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/db.dropcolumn/testsuite/test_db_dropcolumn.py

@@ -0,0 +1,54 @@
+"""
+Created on Sun Jun 07 19:08:34 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 TestDbDropColumn(TestCase):
+    """Test db.dropcolumn script"""
+
+    mapName = 'myroads'
+    colName = 'SHAPE_LEN'
+
+    @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=cls.mapName,
+                    flags='f')
+
+    def test_drop_column_check(self):
+        """Drop column check, the column should still be in the table"""
+        module = SimpleModule('db.dropcolumn', table=self.mapName,
+                              column=self.colName)
+        self.assertModule(module)
+
+        m = SimpleModule('db.columns', table=self.mapName)
+        self.assertModule(m)
+        self.assertRegexpMatches(decode(m.outputs.stdout), self.colName)
+
+    def test_drop_column_with_force(self):
+        """Drop column with force, the column should not be in the table"""
+        module = SimpleModule('db.dropcolumn', table=self.mapName,
+                              column=self.colName,
+                              flags='f')
+        self.assertModule(module)
+
+        m = SimpleModule('db.columns', table=self.mapName)
+        self.assertModule(m)
+        self.assertNotRegexpMatches(decode(m.outputs.stdout), self.colName)
+
+if __name__ == '__main__':
+    test()