Add test functions for SQLite

Added test for VARIANCE()

Added test for floor()
This commit is contained in:
Worros 2009-11-19 15:28:48 +08:00
parent 29d135da1b
commit 571cbe07a0

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pyfpdb/test_Database.py Normal file
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# -*- coding: utf-8 -*-
import sqlite3
import fpdb_db
import math
# Should probably use our wrapper classes - creating sqlite db in memory
sqlite3.register_converter("bool", lambda x: bool(int(x)))
sqlite3.register_adapter(bool, lambda x: "1" if x else "0")
con = sqlite3.connect(":memory:")
con.isolation_level = None
#Floor function
con.create_function("floor", 1, math.floor)
#Mod function
tmp = fpdb_db.sqlitemath()
con.create_function("mod", 2, tmp.mod)
# Aggregate function VARIANCE()
con.create_aggregate("variance", 1, fpdb_db.VARIANCE)
cur = con.cursor()
def testSQLiteVarianceFunction():
cur.execute("CREATE TABLE test(i)")
cur.execute("INSERT INTO test(i) values (1)")
cur.execute("INSERT INTO test(i) values (2)")
cur.execute("INSERT INTO test(i) values (3)")
cur.execute("SELECT variance(i) from test")
result = cur.fetchone()[0]
print "DEBUG: Testing variance function"
print "DEBUG: result: %s expecting: 0.666666 (result-expecting ~= 0.0): %s" % (result, (result - 0.66666))
cur.execute("DROP TABLE test")
assert (result - 0.66666) <= 0.0001
def testSQLiteFloorFunction():
vars = [0.1, 1.5, 2.6, 3.5, 4.9]
cur.execute("CREATE TABLE test(i float)")
for var in vars:
cur.execute("INSERT INTO test(i) values(%f)" % var)
cur.execute("SELECT floor(i) from test")
result = cur.fetchall()
print "DEBUG: result: %s" % result
answer = 0
for i in result:
print "DEBUG: int(var): %s" % int(i[0])
assert answer == int(i[0])
answer = answer + 1