diff --git a/src/e3/mock/env.py b/src/e3/mock/env.py
new file mode 100644
index 00000000..520e91f4
--- /dev/null
+++ b/src/e3/mock/env.py
@@ -0,0 +1,42 @@
+"""Submodule to mock Env."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+from contextlib import contextmanager
+
+from e3.env import Env
+
+
+if TYPE_CHECKING:
+    from typing import TypedDict, Iterator
+    from typing_extensions import NotRequired
+
+    class MockEnvConfig(TypedDict):
+        """Config for MockEnv."""
+
+        name: str
+        """Mocked platform name"""
+        version: NotRequired[str]
+        """Mocked system version"""
+        machine: NotRequired[str]
+        """Mocked name of the target machine"""
+        mode: NotRequired[str]
+        """Mocked name of the mode"""
+
+
+@contextmanager
+def mock_env(config: MockEnvConfig | None = None) -> Iterator[Env]:
+    """Mock e3.env.Env as a context or decorator.
+
+    :param config: config for the mock
+    :return: yield an Env iterator
+    """
+    _mock_env = Env()
+    _mock_env.store()
+    try:
+        if config:
+            _mock_env.set_build(**config)
+        yield _mock_env
+    finally:
+        _mock_env.restore()
diff --git a/tests/tests_e3/mock/env/__init__.py b/tests/tests_e3/mock/env/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/tests_e3/mock/env/main_test.py b/tests/tests_e3/mock/env/main_test.py
new file mode 100644
index 00000000..28c6053e
--- /dev/null
+++ b/tests/tests_e3/mock/env/main_test.py
@@ -0,0 +1,105 @@
+"""Tests for e3.env."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+import pytest
+
+import logging
+from e3.log import getLogger
+from e3.env import Env
+from e3.mock.env import mock_env
+
+if TYPE_CHECKING:
+    from typing import Callable
+    from pytest import LogCaptureFixture
+
+logger = getLogger("test MockEnv")
+
+
+LOG_RUNNING_IN_WIN_2022 = "Running in Windows Server 2022"
+LOG_ERROR_WIN_VERSION = (
+    "Not running in correct windows version, expected version"
+    " is 2022 but running in %(version)s"
+)
+
+ASSERT_PLATFORM_ERROR = (
+    "Invalid platform : '%(platform)s' , function runs only in windows"
+)
+
+
+LINUX_ECHO_HELLO = "echo 'hello'"
+WINDOWS_ECHO_HELLO = "Write-Output 'hello'"
+
+
+def run_on_windows_2022() -> None:
+    """Run a command in windows server 2022."""
+    env = Env()
+    version = env.build.os.version
+
+    assert "windows" in env.platform, ASSERT_PLATFORM_ERROR % {
+        "platform": env.platform,
+    }
+    if version == "2022":
+        logging.info(LOG_RUNNING_IN_WIN_2022)
+    else:
+        logging.error(
+            LOG_ERROR_WIN_VERSION % {"exp_version": " 2022", "version": version}
+        )
+
+
+def echo_hello() -> None:
+    env = Env()
+
+    if "windows" in env.platform:
+        logger.info(WINDOWS_ECHO_HELLO)
+    else:
+        logger.info(LINUX_ECHO_HELLO)
+
+
+@mock_env(config={"name": "x86_64-windows64", "version": "2022"})
+def test_mock_env_decorator(caplog: LogCaptureFixture) -> None:
+    """Test mock env decorator."""
+    run_on_windows_2022()
+
+    assert caplog.text.count(LOG_RUNNING_IN_WIN_2022) == 1
+
+
+@mock_env()
+def test_mock_env_decorator_without_config(caplog: LogCaptureFixture) -> None:
+    """Test mock env decorator."""
+    env = Env()
+    version = env.build.os.version
+
+    if "windows" not in env.platform:
+        with pytest.raises(AssertionError) as ex:
+            run_on_windows_2022()
+
+        print(ex.value.args)
+        assert ASSERT_PLATFORM_ERROR % {"platform": env.platform} in str(ex.value)
+    else:
+        run_on_windows_2022()
+        if "2022" in version:
+            assert caplog.text.count(LOG_RUNNING_IN_WIN_2022) == 1
+        else:
+            assert caplog.text.count(LOG_ERROR_WIN_VERSION % {"version": version}) == 1
+
+
+@pytest.mark.parametrize(
+    "platform_name,version,func,command_result",
+    [
+        ("x86_64-windows64", "2019", echo_hello, WINDOWS_ECHO_HELLO),
+        ("aarch64-linux", "ubuntu24", echo_hello, LINUX_ECHO_HELLO),
+    ],
+)
+def test_mock_env_with_context_config(
+    platform_name: str,
+    version: str,
+    func: Callable,
+    command_result: str,
+    caplog: LogCaptureFixture,
+) -> None:
+    """Test mock_env as context."""
+    with mock_env(config={"name": platform_name, "version": version}):
+        func()
+        assert caplog.text.count(command_result) == 1