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test_generator.py
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test_generator.py
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# -*- coding: utf-8 -*-
# Licensed under the EUPL v1.2
# © 2021 bicobus <bicobus@keemail.me>
#
# flake8: noqa
import json
import random
from pathlib import Path
import pytest
from markovname.generator import Model, construct_alphabet, select_idx_from, train
from tests.fixtures import (
ORDER,
sample_data_chain,
sample_data_list,
sample_data_trained,
sample_data_tuple,
)
def test_construct_alphabet(sample_data_tuple):
letters = {"m", "a", "r", "k", "o", "v", "n", "e", "g", "t"}
con = construct_alphabet(sample_data_tuple)
assert con == letters
def test_train_type(sample_data_list):
bucket = train(sample_data_list, ORDER)
assert isinstance(bucket, dict)
def test_train_len(sample_data_list):
bucket = train(sample_data_list, ORDER)
assert len(bucket) == 20
def test_trained(sample_data_list, sample_data_trained):
bucket = train(sample_data_list, ORDER)
assert bucket == sample_data_trained
def test_build_chains(sample_data_list, sample_data_chain):
mod = Model(sample_data_list, ORDER, 0)
assert mod.chains == sample_data_chain
def generate(model):
word = "#" * ORDER
letter = letter_from(word, model)
while letter != "#":
if letter:
word += letter
letter = letter_from(word, model)
return word
def letter_from(context, model):
letter = ""
ctx_len = len(context)
letter = model.generate(context[ctx_len - model.order:ctx_len])
return letter
@pytest.fixture
def load_jsondata():
jsonfile = Path("tests/data/english_towns.json")
if not jsonfile.exists():
raise Exception("Test data files 'english_towns.json' isn't available.")
return json.load(jsonfile.open())
def test_model(monkeypatch, load_jsondata):
rnd = random.Random(123456789)
def mock_random():
return rnd.random()
monkeypatch.setattr(random, "random", mock_random)
test_model = Model(load_jsondata, ORDER, 0)
word = generate(test_model)
assert word == "###ormskirkby"
word = generate(test_model)
assert word == "###leobury"
word = generate(test_model)
assert word == "###ellenhalesham"