Add pytest tests.

Change AWS cli v1 to cli v2.
Improve allure attachments.
Add tests for S3 API.

Signed-off-by: a.y.volkov <a.y.volkov@yadro.com>

pytest_tests/helpers/utility.py

@@ -0,0 +1,49 @@
+import os
+import uuid
+from typing import List
+
+from common import ASSETS_DIR, SIMPLE_OBJ_SIZE
+
+
+def create_file_with_content(file_path: str = None, content: str = None) -> str:
+    mode = 'w+'
+    if not content:
+        content = os.urandom(SIMPLE_OBJ_SIZE)
+        mode = 'wb'
+
+    if not file_path:
+        file_path = f"{os.getcwd()}/{ASSETS_DIR}/{str(uuid.uuid4())}"
+    else:
+        if not os.path.exists(os.path.dirname(file_path)):
+            os.makedirs(os.path.dirname(file_path))
+
+    with open(file_path, mode) as out_file:
+        out_file.write(content)
+
+    return file_path
+
+
+def get_file_content(file_path: str) -> str:
+    with open(file_path, 'r') as out_file:
+        content = out_file.read()
+
+    return content
+
+
+def split_file(file_path: str, parts: int) -> List[str]:
+    files = []
+    with open(file_path, 'rb') as in_file:
+        data = in_file.read()
+
+    content_size = len(data)
+
+    chunk_size = int((content_size + parts) / parts)
+    part_id = 1
+    for start_position in range(0, content_size + 1, chunk_size):
+        part_file_name = f'{file_path}_part_{part_id}'
+        files.append(part_file_name)
+        with open(part_file_name, 'wb') as out_file:
+            out_file.write(data[start_position:start_position + chunk_size])
+        part_id += 1
+
+    return files