v.random: Add tests (#1464)

Check number of points, z, polygon boundary.

Initially version submitted as #704.

Co-authored-by: JosefPudil <pepa.pudil@seznam.cz>

vector/v.random/testsuite/test_v_random.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+""" 
+Name:      v.random test
+Purpose:   Tests v.random and its flags/options.
+Authors:   Josef Pudil (original draft)
+           Sunveer Singh (finished test)
+Copyright: (C) 2020-2021 by Sunveer Singh and the GRASS Development Team
+Licence:   This program is free software under the GNU General Public
+           License (>=v2). Read the file COPYING that comes with GRASS
+           for details.
+"""
+from grass.gunittest.case import TestCase
+from grass.gunittest.main import test
+
+
+class TestVRandom(TestCase):
+    output = "test01"
+    output2 = "test02"
+    npoints = 100
+    state = "nc_state"
+    zmin = 10
+    zmax = 120
+
+    @classmethod
+    def setUpClass(cls):
+        cls.use_temp_region()
+        cls.runModule("g.region", vector=cls.state)
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.del_temp_region()
+
+    def tearDown(cls):
+        cls.runModule("g.remove", type="vector", flags="f", name=cls.output)
+        cls.runModule("g.remove", type="vector", flags="f", name=cls.output2)
+
+    def test_num_points(self):
+        """Checking if number of points equals 100"""
+        self.assertModule("v.random", output=self.output, npoints=self.npoints)
+        topology = dict(points=self.npoints)
+        self.assertVectorFitsTopoInfo(vector=self.output, reference=topology)
+
+    def test_num_points_3D(self):
+        """Checking if the map is 3D and number of points is 100"""
+        self.assertModule(
+            "v.random",
+            output=self.output,
+            npoints=self.npoints,
+            zmin=self.zmin,
+            zmax=self.zmax,
+            flags="z",
+        )
+        topology = dict(points=self.npoints, map3d=1)
+        self.assertVectorFitsTopoInfo(vector=self.output, reference=topology)
+
+    def test_restrict(self):
+        """Checking if all points are in the polygon boundary state"""
+        self.assertModule(
+            "v.random", output=self.output, npoints=self.npoints, restrict=self.state
+        )
+        self.assertModule(
+            "v.clip", input=self.output, clip=self.state, output=self.output2
+        )
+        self.assertVectorInfoEqualsVectorInfo(self.output, self.output2, precision=0.01)
+
+
+if __name__ == "__main__":
+    test()