testsuite: r.grow test shrinking map without NULL values

Based on PR OSGeo#343
marisn · Feb 18, 2020 · 788758a · 788758a
1 parent c549756
commit 788758a
Showing 1 changed file with 18 additions and 2 deletions.
diff --git a/scripts/r.grow/testsuite/test_r_grow.py b/scripts/r.grow/testsuite/test_r_grow.py
@@ -1,7 +1,7 @@
 """
 Created on Sun Jun 07 22:09:41 2018
 
-@author: Sanjeet Bhatti
+@author: Sanjeet Bhatti, Maris Nartiss
 """
 
 from grass.gunittest.case import TestCase
@@ -16,6 +16,8 @@ class TestRGrow(TestCase):
     mapName = 'lakes'
     mapGrownOutput = 'lakes_grown_100m'
     mapShrunkOutput = 'lakes_shrunk_100m'
+    mapNoNULL = 'elevation'
+    mapShrunkNoNULL = 'elevation_shrunk'
 
     @classmethod
     def setUpClass(cls):
@@ -28,7 +30,8 @@ def tearDownClass(cls):
         """Remove temporary region"""
         cls.runModule('g.remove', flags='f', type='raster',
                       name=(cls.mapGrownOutput,
-                            cls.mapShrunkOutput))
+                            cls.mapShrunkOutput,
+                            cls.mapShrunkNoNULL))
         cls.del_temp_region()
 
     def test_grow(self):
@@ -45,5 +48,18 @@ def test_shrink(self):
                               radius=-10)
         self.assertModule(module)
 
+    def test_shrink_null(self):
+        """Shrinking of map without NULL values
+        Based on https://github.com/OSGeo/grass/pull/343"""
+        shrinked_string = '56-156'
+        shrinked = SimpleModule('r.grow', input=self.mapNoNULL,
+                              output=self.mapShrunkNoNULL,
+                              radius=-10)
+        self.assertModule(shrinked)
+
+        shrined_range = SimpleModule('r.describe', flags='i', _map=self.mapShrunkNoNULL)
+        self.runModule(shrined_range)
+        self.assertLooksLike(shrinked_string, str(shrined_range.outputs.stdout).strip())
+
 if __name__ == '__main__':
     test()