84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#Copyright 2008-2011 Carl Gherardi
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#This program is free software: you can redistribute it and/or modify
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#it under the terms of the GNU Affero General Public License as published by
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#the Free Software Foundation, version 3 of the License.
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#
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#This program is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#GNU General Public License for more details.
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#
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#You should have received a copy of the GNU Affero General Public License
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#along with this program. If not, see <http://www.gnu.org/licenses/>.
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#In the "official" distribution you can find the license in agpl-3.0.txt.
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import sqlite3
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import Database
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import math
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# Should probably use our wrapper classes - creating sqlite db in memory
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sqlite3.register_converter("bool", lambda x: bool(int(x)))
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sqlite3.register_adapter(bool, lambda x: "1" if x else "0")
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con = sqlite3.connect(":memory:")
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con.isolation_level = None
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#Floor function
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con.create_function("floor", 1, math.floor)
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#Mod function
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tmp = Database.sqlitemath()
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con.create_function("mod", 2, tmp.mod)
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# Aggregate function VARIANCE()
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con.create_aggregate("variance", 1, Database.VARIANCE)
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cur = con.cursor()
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def testSQLiteVarianceFunction():
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cur.execute("CREATE TABLE test(i)")
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cur.execute("INSERT INTO test(i) values (1)")
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cur.execute("INSERT INTO test(i) values (2)")
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cur.execute("INSERT INTO test(i) values (3)")
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cur.execute("SELECT variance(i) from test")
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result = cur.fetchone()[0]
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print (_("DEBUG:") + " " + _("Testing variance function"))
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print (_("DEBUG:") + " " + _("result: %s expecting: 0.666666 (result-expecting ~= 0.0): %s") % (result, (result - 0.66666)))
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cur.execute("DROP TABLE test")
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assert (result - 0.66666) <= 0.0001
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def testSQLiteFloorFunction():
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vars = [0.1, 1.5, 2.6, 3.5, 4.9]
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cur.execute("CREATE TABLE test(i float)")
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for var in vars:
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cur.execute("INSERT INTO test(i) values(%f)" % var)
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cur.execute("SELECT floor(i) from test")
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result = cur.fetchall()
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print "DEBUG: result: %s" % result
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answer = 0
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for i in result:
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print "DEBUG: int(var): %s" % int(i[0])
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assert answer == int(i[0])
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answer = answer + 1
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cur.execute("DROP TABLE test")
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def testSQLiteModFunction():
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vars = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 ,17, 18]
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cur.execute("CREATE TABLE test(i int)")
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for var in vars:
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cur.execute("INSERT INTO test(i) values(%i)" % var)
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cur.execute("SELECT mod(i,13) from test")
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result = cur.fetchall()
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idx = 0
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for i in result:
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print "DEBUG: int(var): %s" % i[0]
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assert vars[idx]%13 == int(i[0])
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idx = idx+1
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cur.execute("DROP TABLE test")
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