"""
 Copyright (c) 2018-2019 Intel Corporation

 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
from unittest.mock import MagicMock
from xml.etree.ElementTree import Element, tostring

import numpy as np

from mo.back.ie_ir_ver_2.emitter import soft_get, xml_shape
from mo.utils.error import Error

expected_result = b'<net><dim>2</dim><dim>10</dim><dim>50</dim><dim>50</dim></net>'


class TestEmitter(unittest.TestCase):
    def test_xml_shape(self):
        net = Element('net')
        xml_shape(np.array([2, 10, 50, 50], dtype=np.int64), net)
        self.assertEqual(tostring(net), expected_result)

    def test_xml_shape_float_values(self):
        net = Element('net')
        xml_shape(np.array([2.0, 10.0, 50.0, 50.0], dtype=np.float32), net)
        self.assertEqual(tostring(net), expected_result)

    def test_xml_shape_non_integer_values(self):
        net = Element('net')
        with self.assertRaises(Error):
            xml_shape(np.array([2.0, 10.0, 50.0, 50.5], dtype=np.float32), net)

    def test_xml_shape_negative_values(self):
        net = Element('net')
        with self.assertRaises(Error):
            xml_shape(np.array([2, 10, 50, -50], dtype=np.int64), net)

    def test_xml_shape_zero_values(self):
        net = Element('net')
        with self.assertRaises(Error):
            xml_shape(np.array([2, 0, 50, 50], dtype=np.int64), net)


class TestSoftGet(unittest.TestCase):

    def test_node(self):
        node = MagicMock()
        node.soft_get = lambda attr: attr
        self.assertEqual(soft_get(node, 'string'), 'string')

    def test_not_callable(self):
        node = MagicMock()
        node.soft_get = 'foo'
        self.assertEqual(soft_get(node, 'string'), '<SUB-ELEMENT>')

    def test_not_node_1(self):
        node = {'soft_get': lambda attr: attr}
        self.assertEqual(soft_get(node, 'string'), '<SUB-ELEMENT>')

    def test_not_node_2(self):
        node = 'something-else'
        self.assertEqual(soft_get(node, 'string'), '<SUB-ELEMENT>')
