r.stats.quantile: minimalistic testsuite added

Triggers #2259

raster/r.stats.quantile/testsuite/test_r_stats_quantile.py

@@ -0,0 +1,36 @@
+from grass.gunittest.case import TestCase
+from grass.gunittest.main import test
+from grass.gunittest.gmodules import call_module
+
+# TODO: add verification of r.stats.quantile -p output
+
+class TestStatsQuantile(TestCase):
+
+    base = "zipcodes"
+    cover = "elevation"
+
+    def setUp(self):
+        self.use_temp_region()
+        call_module("g.region", raster="elevation")
+
+    def tearDown(self):
+        self.del_temp_region()
+        call_module(
+            "g.remove",
+            flags="f",
+            type_="raster",
+            name=[self.base, self.cover],
+        )
+
+    def test_limits(self):
+        self.assertModule(
+            "r.stats.quantile",
+            base=self.base,
+            cover=self.cover,
+            quantiles=3,
+            flags="p",
+        )
+
+
+if __name__ == "__main__":
+    test()