Change VideoInfo functions to accessor style

tests/test_calculator_get_item.py

@@ -71,6 +71,7 @@ items_test_list3 = [
     'root',
     'node4'
 ]
+
 items_test_list_nest = [
     'root',
     'node5',
@@ -114,7 +115,8 @@ def test_get_items_2():
     assert get_item(dict_test, items_test_nest) == 'value2-0'
 
 def test_get_items_3():
-    assert get_item(dict_test, items_test_list0) ==  {'node3-1-0' : 'value3-1-0'}
+    assert get_item(
+        dict_test, items_test_list0) ==  {'node3-1-0' : 'value3-1-0'}
 
 def test_get_items_4():
     assert get_item(dict_test, items_test_list1) ==  'value3-1-0'

tests/test_videoinfo.py

@@ -0,0 +1,62 @@
+from pytchat.tool.videoinfo import VideoInfo
+from pytchat.exceptions import InvalidVideoIdException
+import pytest
+
+def _open_file(path):
+    with open(path,mode ='r',encoding = 'utf-8') as f:
+        return f.read()
+
+def _set_test_data(filepath, mocker):
+    _text = _open_file(filepath)
+    response_mock = mocker.Mock()
+    response_mock.status_code = 200
+    response_mock.text = _text
+    mocker.patch('requests.get').return_value = response_mock
+
+def test_archived_page(mocker):
+    _set_test_data('tests/testdata/videoinfo/archived_page.txt', mocker)
+    info = VideoInfo('test_id')
+    actual_thumbnail_url =  'https://i.ytimg.com/vi/fzI9FNjXQ0o/hqdefault.jpg'
+    assert info.video_id == 'test_id'
+    assert info.get_channel_name() == 'GitHub'
+    assert info.get_thumbnail() == actual_thumbnail_url
+    assert info.get_title() == 'GitHub Arctic Code Vault'
+    assert info.get_channel_id() == 'UC7c3Kb6jYCRj4JOHHZTxKsQ'
+    assert info.get_duration() == 148
+
+def test_live_page(mocker):
+    _set_test_data('tests/testdata/videoinfo/live_page.txt', mocker)
+    info = VideoInfo('test_id')
+    '''live page :duration = 0'''        
+    assert info.get_duration() == 0
+    assert info.video_id == 'test_id'
+    assert info.get_channel_name() == 'BGM channel'
+    assert info.get_thumbnail() == \
+        'https://i.ytimg.com/vi/fEvM-OUbaKs/hqdefault_live.jpg'
+    assert info.get_title() == (
+        'Coffee Jazz Music - Chill Out Lounge Jazz Music Radio'
+        ' - 24/7 Live Stream - Slow Jazz')
+    assert info.get_channel_id() == 'UCQINXHZqCU5i06HzxRkujfg'
+
+def test_invalid_video_id(mocker):
+    '''Test case invalid video_id is specified.'''
+    _set_test_data(
+        'tests/testdata/videoinfo/invalid_video_id_page.txt', mocker)
+    try:
+        _ = VideoInfo('test_id')
+        assert False
+    except InvalidVideoIdException:
+        assert True
+
+def test_no_info(mocker):
+    '''Test case the video page has renderer, but no info.'''
+    _set_test_data(
+        'tests/testdata/videoinfo/no_info_page.txt', mocker)
+    info = VideoInfo('test_id')
+    assert info.video_id == 'test_id'
+    assert info.get_channel_name() is None
+    assert info.get_thumbnail() is None
+    assert info.get_title() is None
+    assert info.get_channel_id() is None
+    assert info.get_duration() is None
+