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ptib32szq 3 years ago
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# encoding: UTF-8
# Copyright 2017 Google.com
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import numpy as np
from code import my_txtutils as txt
TST_TXTSIZE = 10000
TST_SEQLEN = 10
TST_BATCHSIZE = 13
TST_EPOCHS = 5
class RnnMinibatchSequencerTest(unittest.TestCase):
def setUp(self):
# generate text of consecutive items
self.data = list(range(TST_TXTSIZE))
@staticmethod
def check_seq_batch(batch1, batch2):
nb_errors = 0
for i in range(TST_BATCHSIZE):
ok = batch1[i, -1] + 1 == batch2[i, 0]
nb_errors += 0 if ok else 1
return nb_errors
def test_sequences(self):
for x, y, epoch in txt.rnn_minibatch_sequencer(self.data, TST_BATCHSIZE, TST_SEQLEN, TST_EPOCHS):
for i in range(TST_BATCHSIZE):
self.assertListEqual(x[i, 1:].tolist(), y[i, :-1].tolist(),
msg="y sequences must be equal to x sequences shifted by -1")
def test_batches(self):
start = True
prev_x = np.zeros([TST_BATCHSIZE, TST_SEQLEN], np.int32)
prev_y = np.zeros([TST_BATCHSIZE, TST_SEQLEN], np.int32)
nb_errors = 0
nb_batches = 0
for x, y, epoch in txt.rnn_minibatch_sequencer(self.data, TST_BATCHSIZE, TST_SEQLEN, TST_EPOCHS):
if not start:
nb_errors += self.check_seq_batch(prev_x, x)
nb_errors += self.check_seq_batch(prev_y, y)
prev_x = x
prev_y = y
start = False
nb_batches += 1
self.assertLessEqual(nb_errors, 2 * TST_EPOCHS,
msg="Sequences should be correctly continued, even between epochs. Only "
"one sequence is allowed to not continue from one epoch to the next.")
self.assertLess(TST_TXTSIZE - (nb_batches * TST_BATCHSIZE * TST_SEQLEN),
TST_BATCHSIZE * TST_SEQLEN * TST_EPOCHS,
msg="Text ignored at the end of an epoch must be smaller than one batch of sequences")
class EncodingTest(unittest.TestCase):
def setUp(self):
self.test_text_known_chars = \
"PRIDE AND PREJUDICE" \
"\n" \
"By Jane Austen" \
"\n" \
"\n" \
"\n" \
"Chapter 1" \
"\n" \
"\n" \
"It is a truth universally acknowledged, that a single man in possession " \
"of a good fortune, must be in want of a wife." \
"\n\n" \
"However little known the feelings or views of such a man may be on his " \
"first entering a neighbourhood, this truth is so well fixed in the minds " \
"of the surrounding families, that he is considered the rightful property " \
"of some one or other of their daughters." \
"\n\n" \
"\"My dear Mr. Bennet,\" said his lady to him one day, \"have you heard that " \
"Netherfield Park is let at last?\"" \
"\n\n" \
"Mr. Bennet replied that he had not." \
"\n\n" \
"\"But it is,\" returned she; \"for Mrs. Long has just been here, and she " \
"told me all about it.\"" \
"\n\n" \
"Mr. Bennet made no answer." \
"\n\n" \
"\"Do you not want to know who has taken it?\" cried his wife impatiently." \
"\n\n" \
"\"_You_ want to tell me, and I have no objection to hearing it.\"" \
"\n\n" \
"This was invitation enough." \
"\n\n" \
"\"Why, my dear, you must know, Mrs. Long says that Netherfield is taken " \
"by a young man of large fortune from the north of England; that he came " \
"down on Monday in a chaise and four to see the place, and was so much " \
"delighted with it, that he agreed with Mr. Morris immediately; that he " \
"is to take possession before Michaelmas, and some of his servants are to " \
"be in the house by the end of next week.\"" \
"\n\n" \
"\"What is his name?\"" \
"\n\n" \
"\"Bingley.\"" \
"\n\n" \
"Testing punctuation: !\"#$%&\'()*+,-./0123456789:;<=>?@[\\]^_`{|}~" \
"\n" \
"Tab\x09Tab\x09Tab\x09Tab" \
"\n"
self.test_text_unknown_char = "Unknown char: \x0C" # the unknown char 'new page'
def test_encoding(self):
encoded = txt.encode_text(self.test_text_known_chars)
decoded = txt.decode_to_text(encoded)
self.assertEqual(self.test_text_known_chars, decoded,
msg="On a sequence of supported characters, encoding, "
"then decoding should yield the original string.")
def test_unknown_encoding(self):
encoded = txt.encode_text(self.test_text_unknown_char)
decoded = txt.decode_to_text(encoded)
original_fix = self.test_text_unknown_char[:-1] + chr(0)
self.assertEqual(original_fix, decoded,
msg="The last character of the test sequence is an unsupported "
"character and should be encoded and decoded as 0.")
class TxtProgressTest(unittest.TestCase):
def test_progress_indicator(self):
print("If the printed output of this test is incorrect, the test will fail. No need to check visually.", end='')
test_cases = (50, 51, 49, 1, 2, 3, 1000, 333, 101)
p = txt.Progress(100)
for maxi in test_cases:
m, cent = self.check_progress_indicator(p, maxi)
self.assertEqual(m, maxi, msg="Incorrect number of steps.")
self.assertEqual(cent, 100, msg="Incorrect number of steps.")
@staticmethod
def check_progress_indicator(p, maxi):
p._Progress__print_header()
progress = p._Progress__start_progress(maxi)
total = 0
n = 0
for k in progress():
total += k
n += 1
return n, total
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