pytest-embedded-serial
Make pytest-embedded plugin work with Serial.
Decision gist · record as of 2026-08-14
Yes. This is a stable, actively maintained plugin for a specific but important use case: testing embedded systems over serial connections. Low install friction, permissive license, no known vulnerabilities, and recent activity make it a reliable choice if you need pytest-based serial device testing.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; pyserial must be available for serial port access.
- Low friction install with a pure-Python wheel.
- Actively maintained with a recent release; last commit on 2026-08-10 and 59 days since the latest release indicate steady development.
License · maintenance · safety
permissive license (permissive) — MIT license (permissive) means you can use, modify, and distribute this package freely with minimal restrictions, even in commercial projects.
last release 2026-06-16 (59 days) · last repo commit 2026-08-10 · 151 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 157,907 downloads/mo, #10,742 on PyPI
Alternatives
Verify before relying
pip install pytest-embedded-serial
from pytest_embedded import Dut
def test_serial_device(dut: Dut):
dut.expect('expected_output')
dut.expect_exact('exact_match')- Whether the serial service is automatically enabled or requires --embedded-services serial flag
- Specific serial port configuration requirements (baud rate, timeout defaults)
- Whether pyserial is bundled or must be installed separately for serial functionality
What it is and what it does
pytest-embedded-serial is a pytest plugin that extends the pytest-embedded framework specifically for serial port communication with embedded devices. It provides fixtures like `Dut` (Device Under Test) that allow you to send commands to and capture output from devices connected via serial, using pattern matching methods like `expect()` and `expect_exact()` to validate device behavior.
The plugin is designed for testing embedded systems where you need to interact with hardware over serial connections. It depends on pytest-embedded for core functionality and pyserial for low-level serial port access. The plugin supports semantic versioning and is actively maintained, with support for modern Python versions (3.10 through 3.14).
Use it for
- Test firmware output from microcontroller boards connected via USB serial
- Validate command-response behavior of embedded devices during CI/CD pipelines
- Automate serial port interaction testing for IoT device prototypes
- Capture and assert on device debug logs and diagnostic output over serial
- Integration testing of embedded applications with real hardware or emulation
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
This is a stable, actively maintained plugin for a specific but important use case: testing embedded systems over serial connections. Low install friction, permissive license, no known vulnerabilities, and recent activity make it a reliable choice if you need pytest-based serial device testing.
Install
pytest-embedded-serial on PyPI
Before you install
Low friction install with a pure-Python wheel. Actively maintained with a recent release; last commit on 2026-08-10 and 59 days since the latest release indicate steady development.
Requires Python 3.10 or later; pyserial must be available for serial port access.
License in practice
MIT license (permissive) means you can use, modify, and distribute this package freely with minimal restrictions, even in commercial projects.
Quickstart
pip install pytest-embedded-serial
from pytest_embedded import Dut
def test_serial_device(dut: Dut):
dut.expect('expected_output')
dut.expect_exact('exact_match')Verify before relying
- Whether the serial service is automatically enabled or requires --embedded-services serial flag
- Specific serial port configuration requirements (baud rate, timeout defaults)
- Whether pyserial is bundled or must be installed separately for serial functionality
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagespytest-embeddedpyserial |
| Maintenance | Actively maintained 59 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 157,907 / month, #10,742 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableFramework :: PytestIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development :: Testing |
Evidence: pytest_embedded_serial-2.8.1-py3-none-any.whl
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See also pytest-embedded · pytest-embedded-jtag · pytest-embedded-serial-esp · pytest-embedded-qemu · pytest-embedded-idf · pytest-deadfixtures · esptool · esp-idf-monitor · imgtool · pioarduino