Added a test, new structure

.github/workflows/unit-tests.yml

@@ -20,4 +20,4 @@ jobs:
     - name: Run unit tests
       run: |
         cd build/test
-        ./events_test
+        find . -type f -executable -exec {} \;

CMakeLists.txt

@@ -2,5 +2,5 @@ cmake_minimum_required(VERSION 3.10)
 
 project(BatteryEmulator)
 
-add_subdirectory(Software/src/devboard/utils)
+# add_subdirectory(Software/src/devboard/utils)
 add_subdirectory(test)

Software/src/devboard/utils/timer.cpp

@@ -1,11 +1,13 @@
 #include "timer.h"
 
-MyTimer::MyTimer(unsigned long interval) : interval(interval), previousMillis(0) {}
+MyTimer::MyTimer(unsigned long interval) : interval(interval) {
+  previous_millis = millis();
+}
 
 bool MyTimer::elapsed() {
-  unsigned long currentMillis = millis();
-  if (currentMillis - previousMillis >= interval) {
-    previousMillis = currentMillis;
+  unsigned long current_millis = millis();
+  if (current_millis - previous_millis >= interval) {
+    previous_millis = current_millis;
     return true;
   }
   return false;

Software/src/devboard/utils/timer.h

@@ -1,7 +1,9 @@
 #ifndef __MYTIMER_H__
 #define __MYTIMER_H__
 
+#ifndef UNIT_TEST
 #include <Arduino.h>
+#endif
 
 class MyTimer {
  public:
@@ -12,7 +14,7 @@ class MyTimer {
 
  private:
   unsigned long interval;
-  unsigned long previousMillis;
+  unsigned long previous_millis;
 };
 
 #endif  // __MYTIMER_H__

test/CMakeLists.txt

@@ -1,11 +1,18 @@
 # Include the directory with your source files
-include_directories(${CMAKE_SOURCE_DIR}/Software/src/devboard/utils)
+include_directories(${CMAKE_SOURCE_DIR}/Software/src/devboard/utils .)
 
-add_executable(events_test events_test.cpp test_lib.cpp)
+# Create a variable to store the list of test files
+file(GLOB TEST_SOURCES utils/*.cpp)
 
-target_compile_definitions(events_test PRIVATE UNIT_TEST)
+# Loop through each test source file and create an executable
+foreach(TEST_SOURCE ${TEST_SOURCES})
+    # Extract the test name without extension
+    get_filename_component(TEST_NAME ${TEST_SOURCE} NAME_WE)
 
-target_link_libraries(events_test)  # Link to the library from devboard/utils
+    # Create an executable for the test
+    add_executable(${TEST_NAME} ${TEST_SOURCE} test_lib.cpp)
 
-# Register your tests with CTest
-add_test(NAME MyProjectTests COMMAND events_test)
+    # Apply the target_compile_definitions for the test
+    target_compile_definitions(${TEST_NAME} PRIVATE UNIT_TEST)
+
+endforeach()

test/test_lib.cpp

@@ -3,4 +3,4 @@
 
 MySerial Serial;
 
-unsigned long test_millis = 0;
+unsigned long testlib_millis = 0;

test/test_lib.h

@@ -9,12 +9,14 @@
 
 class MySerial;
 
-extern unsigned long test_millis;
+extern unsigned long testlib_millis;
 
+/* Mock millis() */
 static inline unsigned long millis(void) {
-  return test_millis;
+  return testlib_millis;
 }
 
+/* Mock Serial class */
 class MySerial {
  public:
   size_t println(const char* s) {

test/events_test.cpp → test/utils/events_test.cpp

@@ -1,5 +1,5 @@
 // The test library must be included first!
-#include "../../../../test/test_lib.h"
+#include "test_lib.h"
 
 #include "events.cpp"
 
@@ -22,28 +22,28 @@ TEST(update_event_timestamps_test) {
   time_seconds = 0;
 
   // No delta, so time shouldn't increase
-  test_millis = 0;
+  testlib_millis = 0;
   update_event_timestamps();
   ASSERT_EQ(time_seconds, 0);
 
   // Almost time to bump the seconds
-  test_millis = 999;
+  testlib_millis = 999;
   update_event_timestamps();
   ASSERT_EQ(time_seconds, 0);
   ASSERT_EQ(previous_millis, 0);
 
   // millis == 1000, so we should add a second
-  test_millis = 1000;
+  testlib_millis = 1000;
   update_event_timestamps();
   ASSERT_EQ(time_seconds, 1);
   ASSERT_EQ(previous_millis, 1000);
 
   // We shouldn't add more seconds until 2000 now
-  test_millis = 1999;
+  testlib_millis = 1999;
   update_event_timestamps();
   ASSERT_EQ(time_seconds, 1);
   ASSERT_EQ(previous_millis, 1000);
-  test_millis = 2000;
+  testlib_millis = 2000;
   update_event_timestamps();
   ASSERT_EQ(time_seconds, 2);
   ASSERT_EQ(previous_millis, 2000);

test/utils/timer_test.cpp

@@ -0,0 +1,31 @@
+// The test library must be included first!
+#include "timer.cpp"
+#include "../test_lib.h"
+
+/* Helper functions */
+
+/* Test functions */
+
+TEST(timer_test) {
+  unsigned long test_interval = 10;
+
+  testlib_millis = 0;
+  MyTimer timer(test_interval);
+  ASSERT_EQ(timer.elapsed(), false);
+
+  testlib_millis = test_interval - 1;
+  ASSERT_EQ(timer.elapsed(), false);
+
+  testlib_millis = test_interval;
+  ASSERT_EQ(timer.elapsed(), true);
+  ASSERT_EQ(timer.elapsed(), false);
+
+  testlib_millis = 2 * test_interval - 1;
+  ASSERT_EQ(timer.elapsed(), false);
+
+  testlib_millis = 2 * test_interval;
+  ASSERT_EQ(timer.elapsed(), true);
+  ASSERT_EQ(timer.elapsed(), false);
+}
+
+TEST_MAIN();