fix: Restore basic unit tests

Author: milesburton

.arduino-ci.yml

@@ -1,9 +1,15 @@
+# .arduino-ci.yml
+
+# Compilation settings
 compile:
   platforms:
     - uno
   libraries:
     - "OneWire"
-skip_unittest: true
 
-aux_libraries_for_ci:
-  - "OneWire"
+# Unit testing settings
+unittest:
+  platforms:
+    - uno
+  libraries:
+    - "OneWire"

.arduino_ci/.arduino-ci.cpp

@@ -0,0 +1,6 @@
+#define ARDUINO_CI 1
+
+// Mock OneWire GPIO functions
+uint8_t digitalPinToBitMask(uint8_t pin) { return 1 << (pin % 8); }
+void* digitalPinToPort(uint8_t pin) { static uint8_t dummy; return &dummy; }
+void* portModeRegister(void* port) { return port; }

.arduino_ci/util/crc16.h

@@ -0,0 +1,25 @@
+#ifndef CRC16_H
+#define CRC16_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Pure C implementation to replace the ASM version
+static inline uint16_t _crc16_update(uint16_t crc, uint8_t data) {
+    unsigned int i;
+    crc ^= data;
+    for (i = 0; i < 8; ++i) {
+        if (crc & 1)
+            crc = (crc >> 1) ^ 0xA001;
+        else
+            crc = (crc >> 1);
+    }
+    return crc;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

.github/workflows/arduino-ci.yml

@@ -0,0 +1,82 @@
+name: Arduino-Temperature-Control-Library Github Workflow
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install AVR dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y gcc-avr avr-libc
+
+      - name: Create required directories
+        run: |
+          mkdir -p $GITHUB_WORKSPACE/libraries
+          mkdir -p $GITHUB_WORKSPACE/.arduino15
+          mkdir -p $GITHUB_WORKSPACE/Arduino
+
+      - name: Setup Arduino CLI
+        uses: arduino/setup-arduino-cli@v1
+
+      - name: Configure Arduino CLI and install cores
+        run: |
+          arduino-cli config init
+          arduino-cli config set library.enable_unsafe_install true
+          arduino-cli config add board_manager.additional_urls https://arduino.esp8266.com/stable/package_esp8266com_index.json
+          arduino-cli core update-index
+          arduino-cli core install arduino:avr
+          arduino-cli core install esp8266:esp8266
+
+      - name: Install OneWire library
+        run: |
+          arduino-cli lib install OneWire
+          # Replace the CRC implementation directly in the OneWire library
+          cat > /home/runner/Arduino/libraries/OneWire/util/crc16.h << 'EOF'
+          #ifndef CRC16_H
+          #define CRC16_H
+          #include <stdint.h>
+
+          static inline uint16_t _crc16_update(uint16_t crc, uint8_t a)
+          {
+              crc ^= a;
+              for (uint8_t i = 0; i < 8; ++i) {
+                  if (crc & 1)
+                      crc = (crc >> 1) ^ 0xA001;
+                  else
+                      crc = (crc >> 1);
+              }
+              return crc;
+          }
+
+          #endif
+          EOF
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.2.0'
+
+      - name: Install bundler
+        run: |
+          gem install bundler
+
+      - name: Install dependencies
+        run: |
+          bundle install
+
+      - name: List repository contents (for debugging)
+        run: |
+          ls -R
+
+      - name: Remove Blacklisted Example Sketches
+        run: |
+          echo "Removing blacklisted example sketches..."
+          rm -f examples/ESP-WebServer/ESP-WebServer.ino
+
+      - name: Run tests
+        run: |
+          bundle exec arduino_ci.rb

.github/workflows/arduino_test_runner.yml

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem "arduino_ci", "~> 1.6.2"

Gemfile

@@ -0,0 +1,20 @@
+#include <DallasTemperature.h>
+#include <ArduinoUnitTests.h>
+
+unittest(test_initialization) {
+    OneWire oneWire(2); // Simulate OneWire on pin 2
+    DallasTemperature sensors(&oneWire);
+
+    sensors.begin();
+    assertEqual(0, sensors.getDeviceCount());
+}
+
+unittest(test_parasite_power_mode) {
+    OneWire oneWire(2);
+    DallasTemperature sensors(&oneWire);
+
+    sensors.begin();
+    assertFalse(sensors.isParasitePowerMode());
+}
+
+unittest_main()