[#350] Cleanup utility keywords

Signed-off-by: Vladimir Domnich <v.domnich@yadro.com>

pytest_tests/helpers/file_helper.py

@@ -0,0 +1,67 @@
+import hashlib
+import logging
+import os
+import uuid
+from typing import Optional
+
+import allure
+from common import ASSETS_DIR, SIMPLE_OBJ_SIZE
+
+logger = logging.getLogger("NeoLogger")
+
+
+def generate_file(size: int = SIMPLE_OBJ_SIZE) -> str:
+    """Generates a binary file with the specified size in bytes.
+
+    Args:
+        size: Size in bytes, can be declared as 6e+6 for example.
+
+    Returns:
+        The path to the generated file.
+    """
+    file_path = f"{os.getcwd()}/{ASSETS_DIR}/{str(uuid.uuid4())}"
+    with open(file_path, "wb") as file:
+        file.write(os.urandom(size))
+    logger.info(f"File with size {size} bytes has been generated: {file_path}")
+
+    return file_path
+
+
+@allure.step("Get File Hash")
+def get_file_hash(file_path: str, len: Optional[int] = None) -> str:
+    """Generates hash for the specified file.
+
+    Args:
+        file_path: Path to the file to generate hash for.
+        len: How many bytes to read.
+
+    Returns:
+        Hash of the file as hex-encoded string.
+    """
+    file_hash = hashlib.sha256()
+    with open(file_path, "rb") as out:
+        if len:
+            file_hash.update(out.read(len))
+        else:
+            file_hash.update(out.read())
+    return file_hash.hexdigest()
+
+
+@allure.step("Concatenation set of files to one file")
+def concat_files(file_paths: list, resulting_file_path: Optional[str] = None) -> str:
+    """Concatenates several files into a single file.
+
+    Args:
+        file_paths: Paths to the files to concatenate.
+        resulting_file_name: Path to the file where concatenated content should be stored.
+
+    Returns:
+        Path to the resulting file.
+    """
+    if not resulting_file_path:
+        resulting_file_path = f"{os.getcwd()}/{ASSETS_DIR}/{str(uuid.uuid4())}"
+    with open(resulting_file_path, "wb") as f:
+        for file in file_paths:
+            with open(file, "rb") as part_file:
+                f.write(part_file.read())
+    return resulting_file_path