v.extract: added tests, thanks to Sunveer Singh during Google Code-in 2017

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72074 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.extract/testsuite/test_extract.py

@@ -0,0 +1,94 @@
+"""
+Name:       v.extract test
+Purpose:    Tests v.extract 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.
+"""
+import os
+from grass.gunittest.case import TestCase
+from grass.gunittest.gmodules import SimpleModule
+from grass.script.core import read_command
+
+TABLE_1="""cat|MAJORRDS_|ROAD_NAME|MULTILANE|PROPYEAR|OBJECTID|SHAPE_LEN
+1|1|NC-50|no|0|1|4825.369405
+2|2|NC-50|no|0|2|14392.589058
+3|3|NC-98|no|0|3|3212.981242
+4|4|NC-50|no|0|4|13391.907552
+"""
+TABLE_2="""cat|onemap_pro|PERIMETER|GEOL250_|GEOL250_ID|GEO_NAME|SHAPE_area|SHAPE_len
+1|963738.75|4083.97998|2|1|Zml|963738.608571|4083.979839
+2|22189124|26628.261719|3|2|Zmf|22189123.2296|26628.261112
+3|579286.875|3335.55835|4|3|Zml|579286.829631|3335.557182
+4|20225526|33253|5|4|Zml|20225526.6368|33253.000508
+5|450650720|181803.765625|6|5|Ybgg|450650731.029|181803.776199
+"""
+
+TABLE_3="""cat|MAJORRDS_|ROAD_NAME|MULTILANE|PROPYEAR|OBJECTID|SHAPE_LEN
+1|1|NC-50|no|0|1|4825.369405
+2|2|NC-50|no|0|2|14392.589058
+3|3|NC-98|no|0|3|3212.981242
+4|4|NC-50|no|0|4|13391.907552
+5|5|NC-98|no|0|5|7196.001495
+6|6||no|0|6|10185.513951
+7|7|US-1|yes|0|7|13655.438596
+8|8||no|0|8|797.901095
+9|9|NC-98|no|0|9|14772.176241
+"""
+class TestRasterreport(TestCase):
+    input="roadsmajor"
+    output="testoutput"
+    geology='geology'
+
+    @classmethod
+    def setUpClass(cls):
+        cls.use_temp_region()
+	
+    @classmethod
+    def tearDownClass(cls):
+        cls.del_temp_region()
+
+    def tearDown(cls):
+        cls.runModule('g.remove', flags='f', type='vector', name=cls.output)
+
+    def test_flagd(self):
+        """Testing flag d """
+        self.assertModule('v.extract', input=self.input, output=self.output, cats="1,2,3,4")
+        category = read_command('v.db.select', map=self.output,
+	                        separator='pipe')
+        self.assertEqual(first=TABLE_1.replace('\n', os.linesep),
+	                         second=category,
+	                         msg="Attribute table has wrong entries")
+ 
+    def test_cats2(self):
+        """Testing cats=2 """
+        self.assertModule('v.extract', input=self.geology, output=self.output, flags='d', cats="1,2,3,4,5")
+        category = read_command('v.db.select', map=self.output,
+	                        separator='pipe')
+        self.assertEqual(first=TABLE_2.replace('\n', os.linesep),
+	                         second=category,
+	                         msg="Attribute table has wrong entries")
+   
+    def test_flagt(self):
+        """Testing Falg T"""
+        self.assertModule('v.extract', input=self.input, output=self.output, flags='t', cats=1 )
+
+    def test_flatr(self):
+        """Testing flag r """
+        self.assertModule('v.extract', input=self.geology, output=self.output, flags='r', cats=1 )
+
+    def  test_where(self):
+        """Testing where"""
+        self.assertModule('v.extract', input=self.input, output=self.output, flags='d', 
+                            where="cat < 10")
+        category = read_command('v.db.select', map=self.output,
+	                        separator='pipe')
+        self.assertEqual(first=TABLE_3.replace('\n', os.linesep),
+	                         second=category,
+	                         msg="Attribute table has wrong entries")
+if __name__ == '__main__':
+    from grass.gunittest.main import test
+    test()