Add function used to obtain vector capacity

src/vector.c

@@ -74,6 +74,18 @@ int vector_size(vector me)
     return me->item_count;
 }
 
+/**
+ * Gets the capacity that the internal storage of the vector is using.
+ *
+ * @param me The vector to check.
+ *
+ * @return The capacity that the internal storage of the vector is using
+ */
+int vector_capacity(vector me)
+{
+    return me->item_capacity;
+}
+
 /**
  * Determines whether or not the vector is empty.
  *

src/vector.h

@@ -32,6 +32,7 @@ vector vector_init(size_t data_size);
 
 // Utility
 int vector_size(vector me);
+int vector_capacity(vector me);
 bool vector_is_empty(vector me);
 int vector_reserve(vector me, int size);
 int vector_trim(vector me);

tst/vector.c

@@ -88,6 +88,7 @@ void test_vector(void)
     for (int i = 0; i < 10; i++) {
         assert(data[i] == val[9 - i]);
     }
+    assert(vector_capacity(me) >= vector_size(me));
     int trimmed[5] = {0};
     vector_trim(me);
     vector_reserve(me, 3);