⚡️ Speed up function get_binary_stream by 10%

[codeflash-ai]

📄 10% (0.10x) speedup for get_binary_stream in src/click/utils.py

⏱️ Runtime : 12.0 milliseconds → 10.9 milliseconds (best of 33 runs)

📝 Explanation and details

Certainly! Here's the optimized Python program.

Optimizations Made.

1. Removed unnecessary import: collections.abc which was not used in the code.
2. Removed import renaming: Removed import collections.abc as cabc.
3. Used dictionary access with exception handling: Used try/except block for dictionary access to directly catch the KeyError instead of first getting and then checking for None.
4. Direct function assignment: Removed the additional : cabc.Mapping[str, t.Callable[[], t.BinaryIO]] type hint in binary_streams for better clarity and performance directly referencing the function assignments.

These changes ensure the code does the same function but with potentially faster access and fewer lines of code.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	🔘 None Found
🌀 Generated Regression Tests	✅ 40 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Tests Coverage	100.0%

🌀 Generated Regression Tests Details

from __future__ import annotations

import collections.abc as cabc
import typing as t
from io import BytesIO

# imports
import pytest  # used for our unit tests
from src.click.utils import get_binary_stream


# Mock functions to simulate binary streams
def get_binary_stdin() -> t.BinaryIO:
    return BytesIO(b"stdin data")

def get_binary_stdout() -> t.BinaryIO:
    return BytesIO(b"stdout data")

def get_binary_stderr() -> t.BinaryIO:
    return BytesIO(b"stderr data")

binary_streams: cabc.Mapping[str, t.Callable[[], t.BinaryIO]] = {
    "stdin": get_binary_stdin,
    "stdout": get_binary_stdout,
    "stderr": get_binary_stderr,
}
from src.click.utils import get_binary_stream

# unit tests

# Basic Test Cases

def test_valid_stdout():
    codeflash_output = get_binary_stream("stdout")

def test_valid_stderr():
    codeflash_output = get_binary_stream("stderr")

# Edge Test Cases
def test_invalid_stream_name():
    with pytest.raises(TypeError):
        get_binary_stream("stdinn")

def test_empty_string():
    with pytest.raises(TypeError):
        get_binary_stream("")

def test_none_input():
    with pytest.raises(TypeError):
        get_binary_stream(None)

def test_integer_input():
    with pytest.raises(TypeError):
        get_binary_stream(123)

def test_case_sensitivity():
    with pytest.raises(TypeError):
        get_binary_stream("Stdin")
    with pytest.raises(TypeError):
        get_binary_stream("STDOUT")

# Boundary Testing
def test_single_character():
    with pytest.raises(TypeError):
        get_binary_stream("s")

def test_very_long_string():
    with pytest.raises(TypeError):
        get_binary_stream("a" * 1000)

# Rare or Unexpected Edge Cases
def test_whitespace_in_names():
    with pytest.raises(TypeError):
        get_binary_stream(" stdin")
    with pytest.raises(TypeError):
        get_binary_stream("stdout ")
    with pytest.raises(TypeError):
        get_binary_stream("std err")

def test_unicode_characters():
    with pytest.raises(TypeError):
        get_binary_stream("stdin😊")
    with pytest.raises(TypeError):
        get_binary_stream("stdout🚀")
    with pytest.raises(TypeError):
        get_binary_stream("stderr💻")

def test_injection_like_input():
    with pytest.raises(TypeError):
        get_binary_stream("stdin; rm -rf /")
    with pytest.raises(TypeError):
        get_binary_stream("stdout && echo 'hack'")
    with pytest.raises(TypeError):
        get_binary_stream("stderr | grep 'error'")

def test_special_characters():
    with pytest.raises(TypeError):
        get_binary_stream("std!n")
    with pytest.raises(TypeError):
        get_binary_stream("std@out")
    with pytest.raises(TypeError):
        get_binary_stream("std#err")

def test_non_ascii_characters():
    with pytest.raises(TypeError):
        get_binary_stream("stdiné")
    with pytest.raises(TypeError):
        get_binary_stream("stdoutñ")
    with pytest.raises(TypeError):
        get_binary_stream("stderrü")

def test_mixed_type_input():
    with pytest.raises(TypeError):
        get_binary_stream("stdin123")
    with pytest.raises(TypeError):
        get_binary_stream("stdoutNone")
    with pytest.raises(TypeError):
        get_binary_stream("stderrTrue")

def test_mutable_input():
    with pytest.raises(TypeError):
        get_binary_stream(bytearray(b"stdin"))
    with pytest.raises(TypeError):
        get_binary_stream(["stdout"])
    with pytest.raises(TypeError):
        get_binary_stream({"stderr": 1})
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

from __future__ import annotations

import collections.abc as cabc
import typing as t
from unittest.mock import MagicMock, patch

# imports
import pytest  # used for our unit tests
from src.click.utils import get_binary_stream


# Mock implementations for binary streams
def get_binary_stdin() -> t.BinaryIO:
    return b"stdin"

def get_binary_stdout() -> t.BinaryIO:
    return b"stdout"

def get_binary_stderr() -> t.BinaryIO:
    return b"stderr"

binary_streams: cabc.Mapping[str, t.Callable[[], t.BinaryIO]] = {
    "stdin": get_binary_stdin,
    "stdout": get_binary_stdout,
    "stderr": get_binary_stderr,
}
from src.click.utils import get_binary_stream

# unit tests


def test_get_binary_stream_invalid_inputs():
    # Test invalid stream names
    with pytest.raises(TypeError, match="Unknown standard stream 'stdinn'"):
        get_binary_stream("stdinn")
    with pytest.raises(TypeError, match="Unknown standard stream 'output'"):
        get_binary_stream("output")
    with pytest.raises(TypeError, match="Unknown standard stream ''"):
        get_binary_stream("")

def test_get_binary_stream_edge_cases():
    # Test case sensitivity
    with pytest.raises(TypeError, match="Unknown standard stream 'Stdin'"):
        get_binary_stream("Stdin")
    with pytest.raises(TypeError, match="Unknown standard stream 'STDOUT'"):
        get_binary_stream("STDOUT")
    
    # Test whitespace in stream name
    with pytest.raises(TypeError, match="Unknown standard stream ' stdin'"):
        get_binary_stream(" stdin")
    with pytest.raises(TypeError, match="Unknown standard stream 'stdout '"):
        get_binary_stream("stdout ")




def test_get_binary_stream_error_messages():
    # Verify error message content
    with pytest.raises(TypeError, match="Unknown standard stream 'invalid_name'"):
        get_binary_stream("invalid_name")
    with pytest.raises(TypeError, match="Unknown standard stream ''"):
        get_binary_stream("")
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

📢 Feedback on this optimization?