- Added tcp_nat.py to handle TCP NAT, implementing the three-way handshake, data flow, and connection state management.
- Introduced udp_nat.py for UDP NAT, managing chip-initiated datagrams and maintaining flow state.
- Created integration tests in test_picow_net_bridge.py to validate the functionality of the TCP and UDP NAT implementations, including ARP, DHCP, ICMP, and DNS interactions.
- Implemented handshake tests to validate initial bus state and register responses.
- Created end-to-end tests for Pico W LED blinking using MicroPython firmware.
- Added SDPCM framing tests to ensure proper encoding and decoding of control frames.
- Developed IOCTL tests to verify command responses and state changes in the emulator.
- Established a full lifecycle test for WiFi operations, including scanning, connecting, and packet handling.
- Introduced TypeScript configuration for test files to ensure compatibility and strict type checking.
Follows the same pattern as test_esp32_spice_analog.mjs and
test_esp32_spice_ntc_bridge.mjs: compile an ESP32 sketch on-the-fly via
/api/compile/, boot QEMU through the backend WebSocket, and sweep lux
levels while verifying analogRead() returns what ngspice solved.
The netlist uses the exact photodiode cards emitted by
frontend/.../componentToSpice.ts (D_<id> + I_<id>_ph + DPHOTO model), so
any drift in the frontend SPICE mapper surfaces here.
Validated against the live Docker container — lux=0/1000/2500 produce
raw=4095/2854/992, matching the expected 4095/2854/993 within ±1 LSB
and monotonically decreasing with brightness as expected.
The package-lock.json churn is a pre-existing drift: eecircuit-engine
was in package.json but missing from the lock — npm install re-added it.
Companion workflow change (registering the test in backend-e2e-tests.yml)
lives in a separate commit that requires a PAT with workflow scope to push.
Three new end-to-end tests that combine ESP32 QEMU emulation (via backend
WebSocket) with ngspice-WASM analog circuit solving:
1. test_esp32_spice_analog.mjs — voltage divider sweep
- Compiles a sketch that reads analogRead(34)
- Solves two voltage dividers with ngspice (R1/R2=10k/10k then 10k/30k)
- Injects solved V(mid) into ESP32's ADC via esp32_adc_set
- Verifies Serial output matches within +-50 counts (12-bit ADC)
- Confirms circuit change is detected (different ADC values)
2. test_esp32_spice_ntc_bridge.mjs — Wheatstone bridge temperature sweep
- NTC thermistor in a bridge (0C / 25C / 50C)
- ngspice solves the bridge for each temperature
- ESP32 reads both legs (ADC34+ADC35), computes R_ntc and T via beta model
- Verifies temperature within +-5C tolerance across sweep
3. test_esp32_spice_smoke.mjs — ngspice-only smoke test (no backend needed)
Also adds eecircuit-engine to test/backend/e2e/package.json.
Prerequisites: backend on localhost:8001 with esp32 core installed.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Implemented a comprehensive test script (test_micropython_pico.mjs) that performs the following:
- Part 1: Checks backend compilation of a simple Arduino sketch for the rp2040:rp2040:rpipico board.
- Part 2: Downloads MicroPython v1.20.0 UF2 firmware and loads it into a rp2040js simulator.
- Part 3: Simulates the Pico, verifies REPL output, and checks execution of injected Python code.
- Includes detailed logging and error handling for each step of the process.
refactor: Update wiring examples for E32 OLED integration; correct pin mappings for VCC, GND, DATA, and CLK
test: Improve unit tests for ESPIDFCompiler; add scenarios for library resolution and CMake patching
chore: Mark subproject commits as dirty for wokwi-libs
- Implement tests for BMP280, DS1307, DS3231, I2CWriteSink, and MPU6050 slaves in test_i2c_slaves.py.
- Create test suite for Velxio MCP server tools in test_mcp_tools.py, covering Wokwi utilities and circuit management functions.
- Add tests for parsing WiFi and BLE serial output in test_wifi_status_parser.py, ensuring correct status events are captured.
David Montero Crespo