Merge branch 'main' into feature/857

Author: Tranquility2

.github/.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-    ".": "4.14.1"
+    ".": "4.14.2"
 }

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [4.14.2](https://github.com/testcontainers/testcontainers-python/compare/testcontainers-v4.14.1...testcontainers-v4.14.2) (2026-03-18)
+
+
+### Features
+
+* **kafka:** allow configurable listener name and security protocol ([#966](https://github.com/testcontainers/testcontainers-python/issues/966)) ([44dd40b](https://github.com/testcontainers/testcontainers-python/commit/44dd40b48c3a5020b487bae5d460124d9e594ac3))
+
 ## [4.14.1](https://github.com/testcontainers/testcontainers-python/compare/testcontainers-v4.14.0...testcontainers-v4.14.1) (2026-01-31)
 
 

Makefile

@@ -20,7 +20,10 @@ build:  ## Build the python package
 
 tests: ${TESTS}  ## Run tests for each package
 ${TESTS}: %/tests:
-	uv run coverage run --parallel -m pytest -v  $*/tests
+	uv run coverage run --parallel -m pytest -v $*/tests
+
+quick-core-tests:  ## Run core tests excluding long_running
+	uv run coverage run --parallel -m pytest -v -m "not long_running" core/tests
 
 coverage:  ## Target to combine and report coverage.
 	uv run coverage combine
@@ -61,7 +64,7 @@ clean-all: clean ## Remove all generated files and reset the local virtual envir
 	rm -rf .venv
 
 # Targets that do not generate file-level artifacts.
-.PHONY: clean docs doctests image tests ${TESTS}
+.PHONY: clean docs doctests image tests quick-core-tests ${TESTS}
 
 
 # Implements this pattern for autodocumenting Makefiles:

core/README.rst

@@ -16,6 +16,8 @@ Testcontainers Core
 
 .. autoclass:: testcontainers.core.wait_strategies.WaitStrategy
 
+.. autoclass:: testcontainers.core.transferable.Transferable
+
 .. raw:: html
 
     <hr>
@@ -49,3 +51,20 @@ Using `DockerContainer` and `DockerImage` to create a container:
 
 The `DockerImage` class is used to build the image from the specified path and tag.
 The `DockerContainer` class is then used to create a container from the image.
+
+Copying a file from disk into a container:
+
+.. doctest::
+
+    >>> import tempfile
+    >>> from pathlib import Path
+    >>> from testcontainers.core.container import DockerContainer
+
+    >>> with tempfile.TemporaryDirectory() as tmp:
+    ...     my_file = Path(tmp) / "my_file.txt"
+    ...     _ = my_file.write_text("file content")
+    ...     with DockerContainer("bash", command="sleep infinity") as container:
+    ...         container.copy_into_container(my_file, "/tmp/my_file.txt")
+    ...         result = container.exec("cat /tmp/my_file.txt")
+    ...         result.output
+    b'file content'

core/testcontainers/core/config.py

@@ -88,6 +88,8 @@ def read_tc_properties() -> dict[str, str]:
 
 @dataclass
 class TestcontainersConfiguration:
+    __test__ = False
+
     def _render_bool(self, env_name: str, prop_name: str) -> bool:
         env_val = environ.get(env_name, None)
         if env_val is not None:

core/testcontainers/core/container.py

@@ -1,5 +1,8 @@
 import contextlib
+import io
+import pathlib
 import sys
+import tarfile
 from os import PathLike
 from socket import socket
 from types import TracebackType
@@ -18,6 +21,7 @@
 from testcontainers.core.exceptions import ContainerConnectException, ContainerStartException
 from testcontainers.core.labels import LABEL_SESSION_ID, SESSION_ID
 from testcontainers.core.network import Network
+from testcontainers.core.transferable import Transferable, TransferSpec, build_transfer_tar
 from testcontainers.core.utils import is_arm, setup_logger
 from testcontainers.core.wait_strategies import LogMessageWaitStrategy
 from testcontainers.core.waiting_utils import WaitStrategy
@@ -69,6 +73,7 @@ def __init__(
         network: Optional[Network] = None,
         network_aliases: Optional[list[str]] = None,
         _wait_strategy: Optional[WaitStrategy] = None,
+        transferables: Optional[list[TransferSpec]] = None,
         **kwargs: Any,
     ) -> None:
         self.env = env or {}
@@ -82,6 +87,8 @@ def __init__(
             for vol in volumes:
                 self.with_volume_mapping(*vol)
 
+        self.tmpfs: dict[str, str] = {}
+
         self.image = image
         self._docker = DockerClient(**(docker_client_kw or {}))
         self._container: Optional[Container] = None
@@ -99,6 +106,11 @@ def __init__(
         self._wait_strategy: Optional[WaitStrategy] = _wait_strategy
         self._cached_container_info: Optional[ContainerInspectInfo] = None
 
+        self._transferable_specs: list[TransferSpec] = []
+        if transferables:
+            for t in transferables:
+                self.with_copy_into_container(*t)
+
     def with_env(self, key: str, value: str) -> Self:
         self.env[key] = value
         return self
@@ -199,13 +211,18 @@ def start(self) -> Self:
             ports=cast("dict[int, Optional[int]]", self.ports),
             name=self._name,
             volumes=self.volumes,
+            tmpfs=self.tmpfs,
             **{**network_kwargs, **self._kwargs},
         )
 
         if self._wait_strategy is not None:
             self._wait_strategy.wait_until_ready(self)
 
         logger.info("Container started: %s", self._container.short_id)
+
+        for t in self._transferable_specs:
+            self._transfer_into_container(*t)
+
         return self
 
     def stop(self, force: bool = True, delete_volume: bool = True) -> None:
@@ -271,6 +288,16 @@ def with_volume_mapping(self, host: Union[str, PathLike[str]], container: str, m
         self.volumes[str(host)] = mapping
         return self
 
+    def with_tmpfs_mount(self, container_path: str, size: Optional[str] = None) -> Self:
+        """Mount a tmpfs volume on the container.
+
+        :param container_path: Container path to mount tmpfs on (e.g., '/data')
+        :param size: Optional size limit (e.g., '256m', '1g'). If None, unbounded.
+        :return: Self for chaining
+        """
+        self.tmpfs[container_path] = size or ""
+        return self
+
     def get_wrapped_container(self) -> "Container":
         return self._container
 
@@ -327,6 +354,35 @@ def _configure(self) -> None:
         # placeholder if subclasses want to define this and use the default start method
         pass
 
+    def with_copy_into_container(
+        self, transferable: Transferable, destination_in_container: str, mode: int = 0o644
+    ) -> Self:
+        self._transferable_specs.append((transferable, destination_in_container, mode))
+        return self
+
+    def copy_into_container(self, transferable: Transferable, destination_in_container: str, mode: int = 0o644) -> None:
+        return self._transfer_into_container(transferable, destination_in_container, mode)
+
+    def _transfer_into_container(self, transferable: Transferable, destination_in_container: str, mode: int) -> None:
+        if not self._container:
+            raise ContainerStartException("Container must be started before transferring files")
+
+        data = build_transfer_tar(transferable, destination_in_container, mode)
+        if not self._container.put_archive(path="/", data=data):
+            raise OSError(f"Failed to put archive into container at {destination_in_container}")
+
+    def copy_from_container(self, source_in_container: str, destination_on_host: pathlib.Path) -> None:
+        if not self._container:
+            raise ContainerStartException("Container must be started before copying files")
+
+        tar_stream, _ = self._container.get_archive(source_in_container)
+
+        with tarfile.open(fileobj=io.BytesIO(b"".join(tar_stream))) as tar:
+            for member in tar.getmembers():
+                extracted = tar.extractfile(member)
+                if extracted is not None:
+                    destination_on_host.write_bytes(extracted.read())
+
 
 class Reaper:
     """

core/testcontainers/core/generic.py

@@ -29,6 +29,8 @@
 class DbContainer(DockerContainer):
     """
     **DEPRECATED (for removal)**
+    Please use database-specific container classes or `SqlContainer` instead.
+    # from testcontainers.generic.sql import SqlContainer
 
     Generic database container.
     """

core/testcontainers/core/transferable.py

@@ -0,0 +1,33 @@
+import io
+import pathlib
+import tarfile
+from typing import Union
+
+Transferable = Union[bytes, pathlib.Path]
+
+TransferSpec = Union[tuple[Transferable, str], tuple[Transferable, str, int]]
+
+
+def build_transfer_tar(transferable: Transferable, destination: str, mode: int = 0o644) -> bytes:
+    """Build a tar archive containing the transferable, ready for put_archive(path="/")."""
+    buf = io.BytesIO()
+    with tarfile.open(fileobj=buf, mode="w") as tar:
+        if isinstance(transferable, bytes):
+            info = tarfile.TarInfo(name=destination)
+            info.size = len(transferable)
+            info.mode = mode
+            tar.addfile(info, io.BytesIO(transferable))
+        elif isinstance(transferable, pathlib.Path):
+            if transferable.is_file():
+                info = tarfile.TarInfo(name=destination)
+                info.size = transferable.stat().st_size
+                info.mode = mode
+                with transferable.open("rb") as f:
+                    tar.addfile(info, f)
+            elif transferable.is_dir():
+                tar.add(str(transferable), arcname=f"{destination.rstrip('/')}/{transferable.name}")
+            else:
+                raise TypeError(f"Path {transferable} is neither a file nor directory")
+        else:
+            raise TypeError("source must be bytes or Path")
+    return buf.getvalue()

core/tests/test_compose.py

@@ -1,3 +1,4 @@
+import logging
 import subprocess
 from pathlib import Path
 from re import split
@@ -150,7 +151,7 @@ def test_compose_logs():
         assert not line or container.Service in next(iter(line.split("|")))
 
 
-def test_compose_volumes():
+def test_compose_volumes(caplog):
     _file_in_volume = "/var/lib/example/data/hello"
     volumes = DockerCompose(context=FIXTURES / "basic_volume", keep_volumes=True)
     with volumes:
@@ -167,8 +168,11 @@ def test_compose_volumes():
     assert "hello" in stdout
 
     # third time we expect the file to be missing
-    with volumes, pytest.raises(subprocess.CalledProcessError):
-        volumes.exec_in_container(["cat", _file_in_volume], "alpine")
+    with caplog.at_level(
+        logging.CRITICAL, logger="testcontainers.compose.compose"
+    ):  # suppress expected error logs about missing volume
+        with volumes, pytest.raises(subprocess.CalledProcessError):
+            volumes.exec_in_container(["cat", _file_in_volume], "alpine")
 
 
 # noinspection HttpUrlsUsage

core/tests/test_docker_in_docker.py

@@ -179,6 +179,7 @@ def test_find_host_network_in_dood() -> None:
     assert DockerClient().find_host_network() == os.environ[EXPECTED_NETWORK_VAR]
 
 
+@pytest.mark.long_running
 @pytest.mark.skipif(
     is_mac(),
     reason="Docker socket mounting and container networking do not work reliably on Docker Desktop for macOS",
@@ -219,6 +220,7 @@ def test_dood(python_testcontainer_image: str) -> None:
     assert status["StatusCode"] == 0
 
 
+@pytest.mark.long_running
 @pytest.mark.skipif(
     is_mac(),
     reason="Docker socket mounting and container networking do not work reliably on Docker Desktop for macOS",