Addding test for runCallback

include/C_Callback.h

@@ -16,10 +16,10 @@ extern "C" {
 typedef const void (*CallbackFunction)(int, char*, size_t);
 
 // Simple function that prints a number to the console
-DLL_EXPORT void printNumberInDec(int number, char* buffer, size_t bufferSize);
+DLL_EXPORT CallbackFunction printNumberInDec(int number, char* buffer, size_t bufferSize);
 
 // Simple function that prints a number to the console in hex
-DLL_EXPORT void printNumberInHex(int number, char* buffer, size_t bufferSize);
+DLL_EXPORT CallbackFunction printNumberInHex(int number, char* buffer, size_t bufferSize);
 
 // Function that takes a function pointer as an argument and
 // set the callback function to the one passed in

src/C_Callback.c

@@ -7,13 +7,13 @@
 static CallbackFunction callbackFunction = NULL;
 
 // Print a number to a string
-void printNumberInDec(int number, char* buffer, size_t bufferSize)
+CallbackFunction printNumberInDec(int number, char* buffer, size_t bufferSize)
 {
     snprintf(buffer, bufferSize, "Number: %d\n", number);
 }
 
 // Prints a number to a string in hex
-void printNumberInHex(int number, char* buffer, size_t bufferSize)
+CallbackFunction printNumberInHex(int number, char* buffer, size_t bufferSize)
 {
     snprintf(buffer, bufferSize, "Number: 0x%X\n", number);
 }

tests/test_C_Callback.cpp

@@ -26,31 +26,30 @@ TEST(C_Callback, testPrintNumberInHex)
 
 }
 
-// // Test setCallback and runCallback functions
-// void testCallbackFunctions()
-// {
-//     char buffer[100];
-//     int number = 42;
-
-//     // Test when callback function is not set
-//     setCallback(NULL);
-//     runCallback(number, buffer, sizeof(buffer));
-//     printf("Callback Function (NULL): %s\n", buffer);
-//     // Add assertions to check the output
-
-//     // Test when callback function is set
-//     // setCallback(printNumberInDec);
-//     runCallback(number, buffer, sizeof(buffer));
-//     printf("Callback Function (printNumberInDec): %s\n", buffer);
-//     // Add assertions to check the output
-// }
-
-// TEST(C_Callback, testPrintNumberInHex)
-// {
-//     testPrintNumberInHex();
-// }
-
-// TEST(C_Callback, testCallbackFunctions)
-// {
-//     testCallbackFunctions();
-// }
+ // Test setCallback and runCallback functions
+ TEST(C_Callback, testCallbackFunctions)
+ {
+     char buffer[100];
+     int number = 42;
+
+     // Test when callback function is not set
+     setCallback(NULL);
+     runCallback(number, buffer, sizeof(buffer));
+     printf("Callback Function (NULL): %s\n", buffer);
+     // Add assertions to check the output
+     ASSERT_STREQ(buffer, "No callback function set\n");
+
+     // Test when callback function is set
+     setCallback((CallbackFunction) printNumberInDec);
+     runCallback(number, buffer, sizeof(buffer));
+     printf("Callback Function (printNumberInDec): %s\n", buffer);
+     // Add assertions to check the output
+     ASSERT_STREQ(buffer, "Number: 42\n");
+
+     // Test when callback function is set
+     setCallback((CallbackFunction)printNumberInHex);
+     runCallback(number, buffer, sizeof(buffer));
+     printf("Callback Function (printNumberInDec): %s\n", buffer);
+     // Add assertions to check the output
+     ASSERT_STREQ(buffer, "Number: 0x2A\n");
+ }