Stack iterator

tests/foreach.c

@@ -59,27 +59,49 @@ int main(int argc, char const *argv[])
 
     if (sum0 == 50005000)
         printf("%10s PASSED\n", "LIST");
-    if (sum4 == 50005000)
-        printf("%10s PASSED\n", "LINKEDLIST");
     if (sum1 == 50005000)
         printf("%10s PASSED\n", "STACK");
     if (sum2 == 50005000)
         printf("%10s PASSED\n", "QUEUE");
     if (sum3 == 50005000)
         printf("%10s PASSED\n", "DEQUE");
+    if (sum4 == 50005000)
+        printf("%10s PASSED\n", "LINKEDLIST");
 
     printf("\n\n");
 
     sum0 = 0, sum1 = 0, sum2 = 0, sum3 = 0, sum4 = 0;
 
+    FOR_EACH_REV(l, list, , int, l, {
+        sum0 += var;
+    })
+
+    FOR_EACH_REV(s, stack, , int, s, {
+        sum1 += var;
+    })
+
+    // FOR_EACH_REV(q, queue, , int, q, {
+    //     sum2 += var;
+    // })
+
+    // FOR_EACH_REV(d, deque, , int, d, {
+    //     sum3 += var;
+    // })
+
     FOR_EACH_REV(ll, linked, , int, ll, {
         sum4 += var;
     })
 
+    if (sum0 == 50005000)
+        printf("%10s PASSED\n", "LIST");
+    if (sum1 == 50005000)
+        printf("%10s PASSED\n", "STACK");
+    // if (sum2 == 50005000)
+    //     printf("%10s PASSED\n", "QUEUE");
+    // if (sum3 == 50005000)
+    //     printf("%10s PASSED\n", "DEQUE");
     if (sum4 == 50005000)
         printf("%10s PASSED\n", "LINKEDLIST");
-    else
-        printf("%10s ERROR %d", "LINKEDLIST", sum4);
 
     l_free(l);
     ll_free(ll);

tests/iterators/stack.c

@@ -0,0 +1,39 @@
+// Checks if the stack iterator can go back and forward in the stack without
+// hitting invalid states or a nul pointer. Check is done visually.
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include "../../src/stack.h"
+
+STACK_GENERATE(s, stack, static, , int)
+
+int main(int argc, char const *argv[])
+{
+    size_t i;
+    int r;
+
+    // Initliazie stack and add some elements
+    stack *s = s_new(10);
+    for (int i = 0; i < 10; i++)
+        s_push(s, i);
+
+    // Initialize iterator
+    stack_iter iter;
+    s_iter(&iter, s);
+
+    // Make the iterator go back and forward
+    for (int j = 0; j < 4; j++)
+    {
+        while (s_iter_next(&iter, &r, &i))
+            printf("C[%2d] = %2d\n", i, r);
+        printf("\n");
+        while (s_iter_prev(&iter, &r, &i))
+            printf("C[%2d] = %2d\n", i, r);
+        printf("\n\n");
+    }
+
+    s_free(s);
+
+    return 0;
+}