r.info: added tests, thanks to Sunveer Singh during Google Code-in 2017

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72050 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.info/testsuite/test_r_info.py

@@ -0,0 +1,58 @@
+"""
+Name:       r.info test
+Purpose:    Tests r.info and its flags/options.
+	
+Author:     Sunveer Singh, Google Code-in 2017
+Copyright:  (C) 2017 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.gmodules import SimpleModule
+class TestReport(TestCase):
+    
+    @classmethod
+    def setUpClass(cls):
+        """Use temporary region settings"""
+        cls.use_temp_region()
+        
+    @classmethod
+    def tearDownClass(cls):
+        """!Remove the temporary region"""
+        cls.del_temp_region()
+
+    def test_flagg(self):
+        """Testing flag g with map geology_30m using simple module"""
+        output_str="""north=228500
+        south=215000
+        east=645000
+        west=630000
+        nsres=10
+        ewres=10
+        rows=1350
+        cols=1500
+        cells=2025000
+        datatype=CELL
+        ncats=43600"""
+        self.assertModuleKeyValue(module='r.info', map='lakes', flags='g', reference=output_str,
+	                          precision=2, sep="=")
+
+    def test_flagr(self):
+        """Testing flag r with map landcover_1m using simple module"""
+        output_str="""min=34300
+        max=43600"""
+        self.assertModuleKeyValue(module='r.info', map='lakes', flags='r', reference=output_str,
+	                          precision=2, sep="=")
+
+    def test_flage(self):
+        """Testing flag e with map lsat7_2002_50"""
+        self.assertModule('r.info', map='lakes', flags='e')
+
+    def test_flagh(self):
+        """Testing flag h with map zipcodes"""
+        self.assertModule('r.info', map='lakes', flags='h') 
+
+if __name__ == '__main__':
+    from grass.gunittest.main import test
+    test()