pytest-embedded

A pytest plugin that has multiple services available for various functionalities. Designed for embedded testing.

Installation

Packages under this repo mainly use semantic versioning. Sometimes a bug fix version may contain some non-breaking new features as well.

It is recommended to use ~=2.0 to get rid of breaking changes, and use the latest new features. For example,

pip install -U pytest-embedded~=2.0

Quickstart

• pip install -U pytest-embedded~=2.0
• Create a file test_basic.py

from pytest_embedded import Dut


def test_basic_expect(redirect, dut: Dut):
    with redirect():
        print('this would be redirected')

    dut.expect('this')
    dut.expect_exact('would')
    dut.expect('[be]{2}')
    dut.expect_exact('redirected')

• Run the test with pytest, the result would be like:

collected 1 item

test_basic.py .                                                        [100%]

============================= 1 passed in 0.01s =============================

• if run with pytest -s, the output would be as follows:

collected 1 item

test_basic.py 2022-01-01 12:34:56 this would be redirected
.

============================= 1 passed in 0.01s =============================

The print line is also duplicated to console output.

Extra Services

You can activate more services with pytest --embedded-services service[,service] to enable extra fixtures and functionalities. These services are provided by several optional dependencies. You can install them via pip as well.

Available services:

• serial: serial port utilities.
• esp: auto-detect target/port by esptool.
• idf: auto-detect more app info with ESP-IDF specific rules, auto-flash the binary into the target.
• jtag: openocd/gdb utilities
• qemu: running test cases on QEMU instead of the real target.
• arduino: auto-detect more app info with arduino specific rules, auto-flash the binary into the target.
• wokwi: running test cases with Wokwi instead of the real target.
• nuttx: service for nuttx project, optionally with espressif devices.

Resources

• Documentation is hosted at https://docs.espressif.com/projects/pytest-embedded/en/latest/
• More examples under examples