Add Test for Negative Exponents

src/exponent.c

@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #include "exponent.h"
 
 int expI(unsigned int e, int num){
@@ -16,6 +18,8 @@ float expIN(int e, int num){
     if(e>0){
         return (float) expI(e, num);
     }else{
-        return  1.0 / (float) expI(e, num);
+        printf("%d, %d\n", e, num);
+        printf("%f\n", 1.0 / (float) expI((e*-1), num));
+        return  (1.0 / (float) expI((e*-1), num));
     }
 }

test/test_exponent.c

@@ -24,5 +24,21 @@ void test_IntegerExponent_ForPositiveExponent(void){
     TEST_ASSERT_EQUAL_INT(625, r3);  
 }
 
+void test_IntegerExponent_ForNegativeExponent(void){
+    float r1, r2, r3;
+
+    r1 = expIN(-1, 2);
+    r2 = expIN(-3, -3);
+    r3 = expIN(-2, -2);
+
+    printf("Result 1: %d\n", r1);
+    printf("Result 2: %d\n", r2);
+    printf("Result 3: %d\n", r3);
+
+    TEST_ASSERT_EQUAL_FLOAT(0.5, r1);
+    TEST_ASSERT_EQUAL_FLOAT(-0.0370370373, r2);
+    TEST_ASSERT_EQUAL_FLOAT(0.25, r3);
+}
+
 
 #endif // TEST