Some ex19 extra credit

lcthw-remnants-2/list-exercises

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 
-for f in *.c ; do
+for f in ex*.c ; do
   echo "${f/.c/}"
 done

lcthw-remnants-2/runtests

@@ -15,7 +15,6 @@ test_ex17-ec() {
   ./ex17-ec "${testdb}" d 1
   ./ex17-ec "${testdb}" s 1 portia wanda@aeromar.mx "Fancy town"
   ./ex17-ec "${testdb}" f nest &>/dev/null
-  echo "OK"
 }
 
 test_ex18() {
@@ -23,7 +22,15 @@ test_ex18() {
   [[ "${output}" =~ '0 1 2 3 4 7 8' ]]
   [[ "${output}" =~ '8 7 4 3 2 1 0' ]]
   [[ "${output}" =~ '3 4 2 7 1 0 8' ]]
-  echo "OK"
+}
+
+test_ex19() {
+  printf "l\nn\nl\ne\nw\nw\nl\na\na\na\na\na\na\na\na\na\na\n" \
+    | ./ex19 &>/dev/null
+  printf "l\nl\nl\nl\na\na\nx\nq\nz\nn\n" | ./ex19 &>/dev/null
+  for i in {0..20} ; do
+    echo "${RANDOM}" | md5sum | ./ex19 &>/dev/null
+  done
 }
 
 main() {
@@ -32,6 +39,7 @@ main() {
     if type "${func_name}" &>/dev/null ; then
       echo -en "---> ${ex}: "
       "${func_name}"
+      echo "OK"
     fi
   done
 }