add code for checking the return value is actually set and is correct

src/main.c

@@ -1,13 +1,13 @@
 #include <stdio.h>
+#include <string.h>
+
 #include "command.h "
 #include "command.h"
 #include "input.h"
 
-
-
-
 // this is the underlying function
 int printButton(const char* string) {
+    // printf actually returns the number of chars printed to the screen
     return printf(string);
 }
 
@@ -17,22 +17,23 @@ void commandWrapper(void* args, void* ret) {
 }
 
 
+static Inputs_e current_input = BUTTON_DOWN;
 Inputs_e getinput() {
-    return BUTTON_DOWN;
+    return current_input;
 }
 
 
 // this is the only part i dont like
-const char* button_up_cmd_args = "up button pressed";
+const char* button_up_cmd_args = "up button pressed\n";
 int button_up_cmd_return_val = 0; // dont leave thing uninstalised
 
-const char* button_left_cmd_args = "left button pressed";
+const char* button_left_cmd_args = "left button pressed\n";
 int button_left_cmd_return_val = 0; // dont leave thing uninstalised
 
-const char* button_right_cmd_args = "right button pressed";
+const char* button_right_cmd_args = "right button pressed\n";
 int button_right_cmd_return_val = 0; // dont leave thing uninstalised
 
-const char* button_down_cmd_args = "down button pressed";
+const char* button_down_cmd_args = "down button pressed\n";
 int button_down_cmd_return_val = 0; // dont leave thing uninstalised
 
 static Input_t input_device = (Input_t){
@@ -64,8 +65,22 @@ static Input_t input_device = (Input_t){
 int main() {
 
     // we have our input now we will handle it
+
+    // arange
+    // set that current input is being pressed
+    current_input = BUTTON_UP;
+
+    // act
+    // poll the input a
     handleInput(input_device);
 
+    // assert
+    if ((int)(strlen(button_up_cmd_args)) == button_up_cmd_return_val) {
+        printf("return value correct");
+    } else {
+        printf("return value incorrect");
+    }
+
     return 0;
 }