def test02(self):
"""Testing copy() with lower clevel"""
N = 10 * 1000
ra = np.fromiter(((i, i ** 2.2) for i in xrange(N)), dtype="i4,f8")
t = blz.btable(ra, rootdir=self.rootdir)
t2 = t.copy(bparams=blz.bparams(clevel=1))
self.assert_(t.bparams.clevel == blz.bparams().clevel)
self.assert_(t2.bparams.clevel == 1)
# print "cbytes in f1, f2:", t['f1'].cbytes, t2['f1'].cbytes
self.assert_(t["f1"].cbytes < t2["f1"].cbytes, "clevel not changed")
def test01(self):
"""Testing copy() with higher clevel"""
N = 10 * 1000
ra = np.fromiter(((i, i ** 2.2) for i in xrange(N)), dtype="i4,f8")
t = blz.btable(ra, rootdir=self.rootdir)
if self.disk:
# Copy over the same location should give an error
self.assertRaises(RuntimeError, t.copy, bparams=blz.bparams(clevel=9), rootdir=self.rootdir, mode="w")
return
else:
t2 = t.copy(bparams=blz.bparams(clevel=9), rootdir=self.rootdir, mode="w")
# print "cbytes in f1, f2:", t['f1'].cbytes, t2['f1'].cbytes
self.assert_(t.bparams.clevel == blz.bparams().clevel)
self.assert_(t2.bparams.clevel == 9)
self.assert_(t["f1"].cbytes > t2["f1"].cbytes, "clevel not changed")
def test03(self):
"""Testing copy() with no shuffle"""
a = np.linspace(-1., 1., 1e4)
b = blz.barray(a, rootdir=self.rootdir)
c = b.copy(bparams=blz.bparams(shuffle=False))
#print "b.cbytes, c.cbytes:", b.cbytes, c.cbytes
self.assert_(b.cbytes < c.cbytes, "shuffle not changed")
def test02(self):
"""Testing copy() with lesser compression"""
a = np.linspace(-1., 1., 1e4)
b = blz.barray(a, rootdir=self.rootdir)
c = b.copy(bparams=blz.bparams(clevel=1))
#print "b.cbytes, c.cbytes:", b.cbytes, c.cbytes
self.assert_(b.cbytes < c.cbytes, "clevel not changed")
def test01b(self):
"""Testing bparams when adding a new column (numpy flavor)"""
N = 10
ra = np.fromiter(((i, i * 2.0) for i in xrange(N)), dtype="i4,f8")
t = blz.btable(ra, bparams=blz.bparams(1), rootdir=self.rootdir)
c = np.arange(N, dtype="i8") * 3
t.addcol(c, "f2")
self.assert_(t["f2"].bparams.clevel == 1, "Incorrect clevel")
def test03(self):
"""Testing copy() with no shuffle"""
N = 10 * 1000
ra = np.fromiter(((i, i ** 2.2) for i in xrange(N)), dtype="i4,f8")
t = blz.btable(ra)
# print "t:", t, t.rootdir
t2 = t.copy(bparams=blz.bparams(shuffle=False), rootdir=self.rootdir)
# print "cbytes in f1, f2:", t['f1'].cbytes, t2['f1'].cbytes
self.assert_(t["f1"].cbytes < t2["f1"].cbytes, "clevel not changed")
def test01a(self):
"""Testing `__setitem()__` method with start,stop (scalar)"""
a = np.ones((500,200), dtype="i4")*3
b = blz.fill((500,200), 3, dtype="i4", rootdir=self.rootdir,
bparams=blz.bparams())
sl = slice(100,400)
a[sl,:] = 0
b[sl] = 0
if self.open:
b.flush()
b = blz.open(rootdir=self.rootdir)
#print "b[sl]->", `b[sl]`
assert_array_equal(a[sl], b[sl], "Arrays are not equal")
def test04(self):
"""Testing `__getitem()__` method with long ranges"""
a = np.arange(1e4)
b = chunk(a, atom=a.dtype, bparams=blz.bparams())
#print "b[1:8000]->", `b[1:8000]`
assert_array_equal(a[1:8000], b[1:8000], "Arrays are not equal")
def test03(self):
"""Testing `__getitem()__` method with ranges and steps"""
a = np.arange(1e3)
b = chunk(a, atom=a.dtype, bparams=blz.bparams())
#print "b[1:8:3]->", `b[1:8:3]`
assert_array_equal(a[1:8:3], b[1:8:3], "Arrays are not equal")
def test01(self):
"""Testing `__getitem()__` method with scalars"""
a = np.arange(1e3)
b = chunk(a, atom=a.dtype, bparams=blz.bparams())
#print "b[1]->", `b[1]`
self.assert_(a[1] == b[1], "Values in key 1 are not equal")