Geografic-Information-System/scripts/db.dropcolumn/testsuite/test_db_dropcolumn.py

"""
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()