diff --git a/include/gargoyle/test/twine.h b/include/gargoyle/test/twine.h
index 576d8ba..89124e4 100644
--- a/include/gargoyle/test/twine.h
+++ b/include/gargoyle/test/twine.h
@@ -5,5 +5,7 @@ int init_suite_twine(void);
 int clean_suite_twine(void);
 void twine_test_is_sep(void);
 void twine_test_is_eql(void);
+void twine_test_cmp(void);
+//void twine_test_cpy(void);
 
 #endif
diff --git a/test/runner.c b/test/runner.c
index d822ffb..b28bef8 100644
--- a/test/runner.c
+++ b/test/runner.c
@@ -10,6 +10,8 @@ int main() {
   CU_TestInfo twine_tests[] = {
     { "gargoyle_is_sep", twine_test_is_sep },
     { "gargoyle_is_eql", twine_test_is_eql },
+    { "gargoyle_cmp", twine_test_cmp },
+//    { "gargoyle_cpy", twine_test_cpy },
     CU_TEST_INFO_NULL,
   };
 
diff --git a/test/twine.c b/test/twine.c
index 43e237c..98fae52 100644
--- a/test/twine.c
+++ b/test/twine.c
@@ -27,3 +27,24 @@ void twine_test_is_eql(void) {
   CU_ASSERT_FALSE(gargoyle_is_eql('g', 'R'));
   CU_ASSERT_FALSE(gargoyle_is_eql('F', 'h'));
 }
+
+void twine_test_cmp(void) {
+  CU_ASSERT_TRUE(gargoyle_cmp("", "", 0, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("", "", 0, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_TRUE(gargoyle_cmp("", "", 100, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("", "", 100, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_FALSE(gargoyle_cmp("", "w", 1, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("spooky", "spooky", 42, 0));
+  CU_ASSERT_FALSE(gargoyle_cmp("thunderfury", "blessed blade of the windseeker", 11, 0));
+  CU_ASSERT_FALSE(gargoyle_cmp("thunderfury", "blessed blade of the windseeker", 31, 0));
+  CU_ASSERT_FALSE(gargoyle_cmp("blessed blade of the windseeker", "thunderfury", 11, 0));
+  CU_ASSERT_FALSE(gargoyle_cmp("blessed blade of the windseeker", "thunderfury", 31, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("abcdEFGH", "ABCDefgh", 8, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_TRUE(gargoyle_cmp("ABCDefgh", "abcdEFGH", 8, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_TRUE(gargoyle_cmp("hyper-speed", "HYPER_SPEED", 11, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_TRUE(gargoyle_cmp("HYPER_SPEED", "hyper-speed", 11, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_FALSE(gargoyle_cmp("-", "_", 1, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("-", "_", 1, GARGOYLE_FLG_FLXBL));
+  CU_ASSERT_FALSE(gargoyle_cmp("_", "-", 1, 0));
+  CU_ASSERT_TRUE(gargoyle_cmp("_", "-", 1, GARGOYLE_FLG_FLXBL));
+}