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

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72078 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.reclass/testsuite/data/rules.txt

@@ -0,0 +1,5 @@
+     1 thru 19	 = 1    poor quality
+    51 thru 100	 = 1
+    20 thru 24	 = 2
+    26 thru 50	 = 2    medium quality
+    25		 = 3    good quality

raster/r.reclass/testsuite/test_r_reclass.py

@@ -0,0 +1,85 @@
+"""
+Name:       r.reclass test
+Purpose:    Tests r.reclass 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.main import test
+from grass.gunittest.gmodules import SimpleModule
+
+rules1 = """
+1 2 3   = 1    good quality
+4 5     = 2    poor quality
+"""
+
+rules2="""
+1 3 5   = 1    poor quality
+2 4 6   = 2    good quality
+*       = NULL
+"""
+
+rules3="""
+1 thru 10	= 1
+11 thru 20	= 2
+21 thru 30	= 3
+30 thru 40      = NULL
+"""
+
+class Testrr(TestCase):
+    output='reclass'
+    input='elevation_shade'
+ 
+    @classmethod
+    def setUpClass(cls):
+        cls.use_temp_region()
+	cls.runModule('g.region', raster=cls.input)
+	
+    @classmethod
+    def tearDownClass(cls):
+        cls.del_temp_region()
+
+    def tearDown(self):
+        self.runModule('g.remove', type='raster', flags='f', name=self.output)
+
+    def test_rules1(self):
+        """Testing rules 1 """
+	reclass = SimpleModule('r.reclass', input=self.input, output=self.output,
+                              rules='-')
+        reclass.inputs.stdin = rules1
+        self.assertModule(reclass)
+	info = 'min=1\nmax=2\ndatatype=CELL'
+        self.assertRasterFitsInfo(raster='reclass', reference=info)
+
+    def test_rules2(self):
+        """Testing Rules2"""
+	reclass = SimpleModule('r.reclass', input=self.input, output=self.output,
+                              rules='-')
+        reclass.inputs.stdin = rules2
+        self.assertModule(reclass)
+	info = 'min=1\nmax=2\ndatatype=CELL'
+        self.assertRasterFitsInfo(raster='reclass', reference=info)
+
+    def test_rules3(self):
+        """Testing rules3"""
+	reclass = SimpleModule('r.reclass', input=self.input, output=self.output,
+                              rules='-')
+        reclass.inputs.stdin = rules3
+        self.assertModule(reclass)
+	info = 'min=1\nmax=3\ndatatype=CELL'
+        self.assertRasterFitsInfo(raster='reclass', reference=info)
+
+    def test_rules4(self):
+        """Testing rules with external file"""
+	reclass = SimpleModule('r.reclass', input=self.input, output=self.output,
+                              rules='data/rules.txt')
+        self.assertModule(reclass)
+	info = 'min=1\nmax=3\ndatatype=CELL'
+        self.assertRasterFitsInfo(raster='reclass', reference=info)
+
+if __name__ == '__main__':
+    test()