diff --git a/lcthw-remnants-2/c-skeleton/.gitignore b/lcthw-remnants-2/c-skeleton/.gitignore
index 0c5003d..790f18a 100644
--- a/lcthw-remnants-2/c-skeleton/.gitignore
+++ b/lcthw-remnants-2/c-skeleton/.gitignore
@@ -1,2 +1,3 @@
 tests/runtests
-tests/your_library_tests
+tests/*_tests
+tests/**/*_tests
diff --git a/lcthw-remnants-2/c-skeleton/tests/runtests.c b/lcthw-remnants-2/c-skeleton/tests/runtests.c
index 9e39d3a..fffa8f7 100644
--- a/lcthw-remnants-2/c-skeleton/tests/runtests.c
+++ b/lcthw-remnants-2/c-skeleton/tests/runtests.c
@@ -20,17 +20,25 @@ int run_tests_file(char *filename)
   return -1;
 }
 
-int main(void)
+int main(int argc, char *argv[])
 {
   int entcount = 0;
   int rc = 0;
   int i = 0;
   int ntests = 0;
-  char *testsdir = getenv("TESTS");
+  char *testsdir = NULL;
   char *valgrind = getenv("VALGRIND");
   struct dirent **namelist = NULL;
   struct dirent *ep = NULL;
 
+  if(argc > 1) {
+    testsdir = argv[1];
+  }
+
+  if(!testsdir) {
+    testsdir = getenv("TESTS");
+  }
+
   if(!testsdir) {
     testsdir = "./tests";
   }
@@ -70,14 +78,19 @@ int main(void)
       continue;
     }
 
-    printf("ERROR in test %s: here's tests/tests.log\n", filename);
-    printf("------\n");
-    rc = system("tail tests/tests.log");
+    printf("ERROR in test %s", filename);
+    if(access("tests/tests.log", R_OK) == 0) {
+      printf(": here's tests/tests.log\n");
+      printf("------\n");
+      rc = system("tail tests/tests.log");
+    } else {
+      printf("\n");
+    }
     goto error;
   }
 
   printf("------\n");
-  printf("Total of %d test files run.\n", ntests);
+  printf("Total of %d test file%s run.\n", ntests, ntests > 1 ? "s" : "");
 
   if(namelist) {
     free(namelist);
diff --git a/lcthw-remnants-2/liblcthw/.gitignore b/lcthw-remnants-2/liblcthw/.gitignore
index 0c5003d..790f18a 100644
--- a/lcthw-remnants-2/liblcthw/.gitignore
+++ b/lcthw-remnants-2/liblcthw/.gitignore
@@ -1,2 +1,3 @@
 tests/runtests
-tests/your_library_tests
+tests/*_tests
+tests/**/*_tests
diff --git a/lcthw-remnants-2/liblcthw/Makefile b/lcthw-remnants-2/liblcthw/Makefile
index ce425a0..d908dbc 100644
--- a/lcthw-remnants-2/liblcthw/Makefile
+++ b/lcthw-remnants-2/liblcthw/Makefile
@@ -6,7 +6,7 @@ PREFIX ?= /usr/local
 SOURCES = $(wildcard src/**/*.c src/*.c)
 OBJECTS = $(patsubst %.c,%.o,$(SOURCES))
 
-TEST_SRC = $(wildcard tests/*_tests.c)
+TEST_SRC = $(wildcard tests/**/*_tests.c tests/*_tests.c)
 TESTS = $(patsubst %.c,%,$(TEST_SRC))
 
 LIBNAME = lcthw
@@ -35,7 +35,7 @@ build:
 .PHONY: tests
 tests: LDLIBS += -static -l$(LIBNAME)
 tests: ./tests/runtests $(TESTS)
-	./tests/runtests
+	./tests/runtests ./tests/lcthw
 
 valgrind:
 	VALGRIND="valgrind --log-file=/tmp/valgrind-%p.log" $(MAKE)
diff --git a/lcthw-remnants-2/liblcthw/src/lcthw/list.c b/lcthw-remnants-2/liblcthw/src/lcthw/list.c
new file mode 100644
index 0000000..bb7e354
--- /dev/null
+++ b/lcthw-remnants-2/liblcthw/src/lcthw/list.c
@@ -0,0 +1,124 @@
+#include <lcthw/list.h>
+#include <lcthw/dbg.h>
+
+List *List_create()
+{
+  return calloc(1, sizeof(List));
+}
+
+void List_destroy(List *list)
+{
+  LIST_FOREACH(list, first, next, cur) {
+    if(cur->prev) {
+      free(cur->prev);
+    }
+  }
+
+  free(list->last);
+  free(list);
+}
+
+
+void List_clear(List *list)
+{
+  LIST_FOREACH(list, first, next, cur) {
+    free(cur->value);
+  }
+}
+
+
+void List_clear_destroy(List *list)
+{
+  List_clear(list);
+  List_destroy(list);
+}
+
+
+void List_push(List *list, void *value)
+{
+  ListNode *node = calloc(1, sizeof(ListNode));
+  check_mem(node);
+
+  node->value = value;
+
+  if(list->last == NULL) {
+    list->first = node;
+    list->last = node;
+  } else {
+    list->last->next = node;
+    node->prev = list->last;
+    list->last = node;
+  }
+
+  list->count++;
+
+error:
+  return;
+}
+
+void *List_pop(List *list)
+{
+  ListNode *node = list->last;
+  return node != NULL ? List_remove(list, node) : NULL;
+}
+
+void List_unshift(List *list, void *value)
+{
+  ListNode *node = calloc(1, sizeof(ListNode));
+  check_mem(node);
+
+  node->value = value;
+
+  if(list->first == NULL) {
+    list->first = node;
+    list->last = node;
+  } else {
+    node->next = list->first;
+    list->first->prev = node;
+    list->first = node;
+  }
+
+  list->count++;
+
+error:
+  return;
+}
+
+void *List_shift(List *list)
+{
+  ListNode *node = list->first;
+  return node != NULL ? List_remove(list, node) : NULL;
+}
+
+void *List_remove(List *list, ListNode *node)
+{
+  void *result = NULL;
+
+  check(list->first && list->last, "List is empty.");
+  check(node, "node can't be NULL");
+
+  if(node == list->first && node == list->last) {
+    list->first = NULL;
+    list->last = NULL;
+  } else if(node == list->first) {
+    list->first = node->next;
+    check(list->first != NULL, "Invalid list, somehow got a first that is NULL.");
+    list->first->prev = NULL;
+  } else if(node == list->last) {
+    list->last = node->prev;
+    check(list->last != NULL, "INvalid list, somehow got a next that is NULL.");
+    list->last->next = NULL;
+  } else {
+    ListNode *after = node->next;
+    ListNode *before = node->prev;
+    after->prev = before;
+    before->next = after;
+  }
+
+  list->count--;
+  result = node->value;
+  free(node);
+
+error:
+  return result;
+}
diff --git a/lcthw-remnants-2/liblcthw/src/lcthw/list.h b/lcthw-remnants-2/liblcthw/src/lcthw/list.h
new file mode 100644
index 0000000..83fe51e
--- /dev/null
+++ b/lcthw-remnants-2/liblcthw/src/lcthw/list.h
@@ -0,0 +1,41 @@
+#ifndef lcthw_List_h
+#define lcthw_List_h
+
+#include <stdlib.h>
+
+struct ListNode;
+
+typedef struct ListNode {
+  struct ListNode *next;
+  struct ListNode *prev;
+  void *value;
+} ListNode;
+
+typedef struct List {
+  int count;
+  ListNode *first;
+  ListNode *last;
+} List;
+
+List *List_create();
+void List_destroy(List *list);
+void List_clear(List *list);
+void List_clear_destroy(List *list);
+
+#define List_count(A) ((A)->count)
+#define List_first(A) ((A)->first != NULL ? (A)->first->value : NULL)
+#define List_last(A) ((A)->last != NULL ? (A)->last->value : NULL)
+
+void List_push(List *list, void *value);
+void *List_pop(List *list);
+
+void List_unshift(List *list, void *value);
+void *List_shift(List *list);
+
+void *List_remove(List *list, ListNode *node);
+
+#define LIST_FOREACH(L, S, M, V) ListNode *_node = NULL;\
+  ListNode *V = NULL;\
+  for(V = _node = L->S; _node != NULL; V = _node = _node->M)
+
+#endif
diff --git a/lcthw-remnants-2/liblcthw/tests/lcthw/list_tests.c b/lcthw-remnants-2/liblcthw/tests/lcthw/list_tests.c
new file mode 100644
index 0000000..6a4a10c
--- /dev/null
+++ b/lcthw-remnants-2/liblcthw/tests/lcthw/list_tests.c
@@ -0,0 +1,112 @@
+#include "../minunit.h"
+#include <lcthw/list.h>
+#include <assert.h>
+
+static List *list = NULL;
+char *test1 = "test1 data";
+char *test2 = "test2 data";
+char *test3 = "test3 data";
+
+
+char *test_create()
+{
+  list = List_create();
+  mu_assert(list != NULL, "Failed to create list.");
+
+  return NULL;
+}
+
+
+char *test_destroy()
+{
+  List_clear_destroy(list);
+
+  return NULL;
+}
+
+
+char *test_push_pop()
+{
+  List_push(list, test1);
+  mu_assert(List_last(list) == test1, "Wrong last value.");
+
+  List_push(list, test2);
+  mu_assert(List_last(list) == test2, "Wrong last value");
+
+  List_push(list, test3);
+  mu_assert(List_last(list) == test3, "Wrong last value");
+  mu_assert(List_count(list) == 3, "Wrong count on push.");
+
+  char *val = List_pop(list);
+  mu_assert(val == test3, "Wrong value on pop.");
+
+  val = List_pop(list);
+  mu_assert(val == test2, "Wrong value on pop.");
+
+  val = List_pop(list);
+  mu_assert(val == test1, "Wrong value on pop.");
+  mu_assert(List_count(list) == 0, "Wrong count after pop.");
+
+  return NULL;
+}
+
+char *test_unshift()
+{
+  List_unshift(list, test1);
+  mu_assert(List_first(list) == test1, "Wrong first value.");
+
+  List_unshift(list, test2);
+  mu_assert(List_first(list) == test2, "Wrong first value.");
+
+  List_unshift(list, test3);
+  mu_assert(List_first(list) == test3, "Wrong first value.");
+  mu_assert(List_count(list) == 3, "Wrong count on unshift.");
+
+  return NULL;
+}
+
+char *test_remove()
+{
+  // we only need to test the middle remove case since push/shift
+  // already tests the other cases
+
+  char *val = List_remove(list, list->first->next);
+  mu_assert(val == test2, "Wrong removed element.");
+  mu_assert(List_count(list) == 2, "Wrong count after remove.");
+  mu_assert(List_first(list) == test3, "Wrong first after remove.");
+  mu_assert(List_last(list) == test1, "Wrong last after remove.");
+
+  return NULL;
+}
+
+
+char *test_shift()
+{
+  mu_assert(List_count(list) != 0, "Wrong count before shift.");
+
+  char *val = List_shift(list);
+  mu_assert(val == test3, "Wrong value on shift.");
+
+  val = List_shift(list);
+  mu_assert(val == test1, "Wrong value on shift.");
+  mu_assert(List_count(list) == 0, "Wrong count after shift.");
+
+  return NULL;
+}
+
+
+
+char *all_tests() {
+  mu_suite_start();
+
+  mu_run_test(test_create);
+  mu_run_test(test_push_pop);
+  mu_run_test(test_unshift);
+  mu_run_test(test_remove);
+  mu_run_test(test_shift);
+  mu_run_test(test_destroy);
+
+  return NULL;
+}
+
+RUN_TESTS(all_tests);
diff --git a/lcthw-remnants-2/liblcthw/tests/minunit.h b/lcthw-remnants-2/liblcthw/tests/minunit.h
index 9ed511e..5ffc3e9 100644
--- a/lcthw-remnants-2/liblcthw/tests/minunit.h
+++ b/lcthw-remnants-2/liblcthw/tests/minunit.h
@@ -13,7 +13,8 @@
   message = test(); tests_run++; if (message) return message;
 
 #define RUN_TESTS(name) int main(int argc, char *argv[]) {\
-  argc = 1; \
+  argc = argc; \
+  argv = argv; \
   debug("----- RUNNING: %s", argv[0]);\
   printf("----\nRUNNING: %s\n", argv[0]);\
   char *result = name();\
diff --git a/lcthw-remnants-2/liblcthw/tests/runtests.c b/lcthw-remnants-2/liblcthw/tests/runtests.c
index 9e39d3a..40585fb 100644
--- a/lcthw-remnants-2/liblcthw/tests/runtests.c
+++ b/lcthw-remnants-2/liblcthw/tests/runtests.c
@@ -4,7 +4,7 @@
 #include <dirent.h>
 #include <unistd.h>
 #include <fnmatch.h>
-#include <dbg.h>
+#include <lcthw/dbg.h>
 
 int test_selector(const struct dirent *ep)
 {
@@ -20,17 +20,25 @@ int run_tests_file(char *filename)
   return -1;
 }
 
-int main(void)
+int main(int argc, char *argv[])
 {
   int entcount = 0;
   int rc = 0;
   int i = 0;
   int ntests = 0;
-  char *testsdir = getenv("TESTS");
+  char *testsdir = NULL;
   char *valgrind = getenv("VALGRIND");
   struct dirent **namelist = NULL;
   struct dirent *ep = NULL;
 
+  if(argc > 1) {
+    testsdir = argv[1];
+  }
+
+  if(!testsdir) {
+    testsdir = getenv("TESTS");
+  }
+
   if(!testsdir) {
     testsdir = "./tests";
   }
@@ -70,14 +78,19 @@ int main(void)
       continue;
     }
 
-    printf("ERROR in test %s: here's tests/tests.log\n", filename);
-    printf("------\n");
-    rc = system("tail tests/tests.log");
+    printf("ERROR in test %s", filename);
+    if(access("tests/tests.log", R_OK) == 0) {
+      printf(": here's tests/tests.log\n");
+      printf("------\n");
+      rc = system("tail tests/tests.log");
+    } else {
+      printf("\n");
+    }
     goto error;
   }
 
   printf("------\n");
-  printf("Total of %d test files run.\n", ntests);
+  printf("Total of %d test file%s run.\n", ntests, ntests > 1 ? "s" : "");
 
   if(namelist) {
     free(namelist);