Fix incosistent hashing

aea/helpers/ipfs/base.py

@@ -22,14 +22,12 @@
 import hashlib
 import io
 import os
-import re
 from pathlib import Path
 from typing import Any, Dict, Generator, Optional, Sized, Tuple, cast
 
 import base58
 
 from aea.helpers.cid import to_v1
-from aea.helpers.io import open_file
 from aea.helpers.ipfs.utils import _protobuf_python_implementation
 
 
@@ -43,35 +41,13 @@
     from aea.helpers.ipfs.pb.merkledag_pb2 import PBNode  # type: ignore
 
 
-def _dos2unix(file_content: bytes) -> bytes:
-    """
-    Replace occurrences of Windows line terminator CR/LF with only LF.
-
-    :param file_content: the content of the file.
-    :return: the same content but with the line terminator
-    """
-    return re.sub(b"\r\n", b"\n", file_content, flags=re.M)
-
-
-def _is_text(file_path: str) -> bool:
-    """Check if a file can be read as text or not."""
-    try:
-        with open_file(file_path, "r") as f:
-            f.read()
-        return True
-    except UnicodeDecodeError:
-        return False
-
-
 def _read(file_path: str) -> bytes:
     """Read a file, replacing Windows line endings if it is a text file."""
-    is_text = _is_text(file_path)
     with open(file_path, "rb") as file:
-        file_b = file.read()
-        if is_text:
-            file_b = _dos2unix(file_b)
-
-    return file_b
+        data = file.read()
+    if len(data) == 0:
+        raise ValueError(f"File cannot be empty: {file_path}")
+    return data
 
 
 def chunks(data: Sized, size: int) -> Generator:

docs/api/crypto/helpers.md

@@ -172,17 +172,3 @@ def hex_to_bytes_for_key(data: str) -> bytes
 
 Convert hex string to bytes with error handling.
 
-<a id="aea.crypto.helpers.generate_multiple_keys"></a>
-
-#### generate`_`multiple`_`keys
-
-```python
-def generate_multiple_keys(n: int,
-                           type_: str,
-                           password: Optional[str] = None,
-                           extra_entropy: Union[str, bytes, int] = "",
-                           file: Optional[str] = None) -> None
-```
-
-Generate n key pairs.
-

tests/test_helpers/test_ipfs/test_base.py

@@ -22,23 +22,12 @@
 import tempfile
 from pathlib import Path
 from tempfile import TemporaryDirectory
-from unittest.mock import patch
 
 import pytest
 from aea_cli_ipfs.ipfs_utils import IPFSTool  # type: ignore
 
 from aea.helpers.cid import to_v1
-from aea.helpers.ipfs.base import IPFSHashOnly, _is_text
-
-
-def test_is_text_negative():
-    """Test the helper method 'is_text' negative case."""
-    # https://gehrcke.de/2015/12/how-to-raise-unicodedecodeerror-in-python-3/
-    with patch(
-        "aea.helpers.ipfs.base.open_file",
-        side_effect=UnicodeDecodeError("foo", b"bytes", 1, 2, "Fake reason"),
-    ):
-        assert not _is_text("path")
+from aea.helpers.ipfs.base import IPFSHashOnly
 
 
 def test_hash_for_big_file():