Geografic-Information-System/scripts/v.db.univar/testsuite/test_v_db_univar.py

"""
Created on Sun Jun 08 19:08:07 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


class TestVDbUnivar(TestCase):
    """Test v.db.univar script"""

    mapName = "elevation"
    columnName = "heights"
    outputMap = "samples"

    @classmethod
    def setUpClass(cls):
        """Use temp region"""
        cls.use_temp_region()
        cls.runModule("g.region", raster=cls.mapName, flags="p")

    @classmethod
    def tearDownClass(cls):
        """Remove temporary region"""
        cls.runModule("g.remove", flags="f", type="raster", name=cls.mapName)
        cls.del_temp_region()

    def test_calculate(self):
        """run db.univar"""
        run_command("v.random", output=self.outputMap, n=100, overwrite="True")
        run_command(
            "v.db.addtable", map=self.outputMap, column="heights double precision"
        )
        run_command(
            "v.what.rast",
            map=self.outputMap,
            raster=self.mapName,
            column=self.columnName,
        )
        run_command("v.db.select", map=self.outputMap)

        module = SimpleModule("v.db.univar", map=self.outputMap, column=self.columnName)
        self.assertModule(module)


if __name__ == "__main__":
    test()