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Have to code and test filtering
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Original file line number | Diff line number | Diff line change |
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from wc_rules.matcher.dbase import Database, DatabaseAlias | ||
from wc_rules.utils.collections import SimpleMapping | ||
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import unittest | ||
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class TestDatabase(unittest.TestCase): | ||
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def test_db(self): | ||
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db = Database(list('abc')) | ||
self.assertEqual(db.fields,list('abc')) | ||
self.assertEqual(len(db.filter(dict(a=1))),0) | ||
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record = dict(a=1,b=2,c=3) | ||
db.insert(record) | ||
self.assertEqual(len(db),1) | ||
self.assertEqual(len(db.filter(dict(a=1))),1) | ||
self.assertEqual(db.filter_one(dict(a=1)),dict(a=1,b=2,c=3)) | ||
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record = dict(a=1,b=3,c=4) | ||
db.insert(record) | ||
self.assertEqual(len(db),2) | ||
self.assertEqual(len(db.filter(dict(a=1))),2) | ||
self.assertEqual(len(db.filter(dict(b=2))),1) | ||
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records = db.delete(dict(c=3)) | ||
self.assertEqual(len(records),1) | ||
self.assertEqual(len(db),1) | ||
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records = db.delete(dict(c=4)) | ||
self.assertEqual(len(records),1) | ||
self.assertEqual(len(db),0) | ||
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class TestAlias(unittest.TestCase): | ||
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def test_mapping(self): | ||
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m1 = SimpleMapping(zip('xyz','abc')) | ||
self.assertEqual(m1,dict(zip('xyz','abc'))) | ||
self.assertEqual(m1.reverse,dict(zip('abc','xyz'))) | ||
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m2 = SimpleMapping(zip('pqr','xyz')) | ||
# testing multiply | ||
self.assertEqual(m1*m2,dict(zip('pqr','abc'))) | ||
v = dict(zip('abc',range(3))) | ||
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self.assertEqual(m1.premultiply(v),dict(zip('xyz',range(3)))) | ||
self.assertEqual(SimpleMapping(m1*m2).premultiply(v),dict(zip('pqr',range(3)))) | ||
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def test_database_alias(self): | ||
db = Database(list('abc')) | ||
db.insert(dict(a=1,b=2,c=3)) | ||
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alias1 = DatabaseAlias(db, dict(zip('xyz','abc'))) | ||
alias2 = DatabaseAlias(alias1,dict(zip('pqr','xyz'))) | ||
alias3 = DatabaseAlias(alias2,dict(zip('ijk','pqr'))) | ||
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self.assertEqual(alias1.target, db) | ||
self.assertEqual(alias2.target, db) | ||
self.assertEqual(alias3.target, db) | ||
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self.assertEqual(alias1.mapping, dict(zip('xyz','abc'))) | ||
self.assertEqual(alias2.mapping, dict(zip('pqr','abc'))) | ||
self.assertEqual(alias3.mapping, dict(zip('ijk','abc'))) |
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