diff --git a/tests/str8/test_str8.c b/tests/str8/test_str8.c
index 2445e83..f77b81f 100644
--- a/tests/str8/test_str8.c
+++ b/tests/str8/test_str8.c
@@ -78,26 +78,26 @@ TestFuncResult test_str8_buf(void) {
 TestFuncResult test_str8_get_index_within_bounds(void) {
   bool result;
 
-  Str8 s1 = wapp_str8_lit("Hello world");
-  result  = wapp_str8_get(&s1, 4) == 'o';
+  Str8RO s1 = wapp_str8_lit_ro("Hello world");
+  result    = wapp_str8_get(&s1, 4) == 'o';
 
-  Str8 s2 = wapp_str8_lit("Different strokes for different folks");
-  result  = result && wapp_str8_get(&s2, 0) == 'D';
+  Str8RO s2 = wapp_str8_lit_ro("Different strokes for different folks");
+  result    = result && wapp_str8_get(&s2, 0) == 'D';
 
-  Str8 s3 = wapp_str8_lit("Discretion is the better part of valour");
-  result  = result && wapp_str8_get(&s3, 13) == ' ';
+  Str8RO s3 = wapp_str8_lit_ro("Discretion is the better part of valour");
+  result    = result && wapp_str8_get(&s3, 13) == ' ';
 
-  Str8 s4 = wapp_str8_lit("Distance lends enchantment to the view");
-  result  = result && wapp_str8_get(&s4, 20) == 'n';
+  Str8RO s4 = wapp_str8_lit_ro("Distance lends enchantment to the view");
+  result    = result && wapp_str8_get(&s4, 20) == 'n';
 
-  Str8 s5 = wapp_str8_lit("Do as I say, not as I do");
-  result  = result && wapp_str8_get(&s5, 11) == ',';
+  Str8RO s5 = wapp_str8_lit_ro("Do as I say, not as I do");
+  result    = result && wapp_str8_get(&s5, 11) == ',';
 
-  Str8 s6 = wapp_str8_lit("Do as you would be done by");
-  result  = result && wapp_str8_get(&s6, 25) == 'y';
+  Str8RO s6 = wapp_str8_lit_ro("Do as you would be done by");
+  result    = result && wapp_str8_get(&s6, 25) == 'y';
 
-  Str8 s7 = wapp_str8_lit("Do unto others as you would have them do to you");
-  result  = result && wapp_str8_get(&s7, 16) == 's';
+  Str8RO s7 = wapp_str8_lit_ro("Do unto others as you would have them do to you");
+  result    = result && wapp_str8_get(&s7, 16) == 's';
 
   return wapp_tester_result(result);
 }
@@ -141,3 +141,35 @@ TestFuncResult test_str8_set(void) {
 
   return wapp_tester_result(result);
 }
+
+TestFuncResult test_str8_find(void) {
+  bool result = true;
+  Str8RO s    = wapp_str8_lit("Do as I say, not as I do");
+
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("d")) != -1);
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("not")) != -1);
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("as I say")) != -1);
+
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("f")) == -1);
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("hello")) == -1);
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("not sa I")) == -1);
+  result = result && (wapp_str8_find(&s, wapp_str8_lit_ro("Do unto others as you would have them do to you")) == -1);
+
+  return wapp_tester_result(result);
+}
+
+TestFuncResult test_str8_rfind(void) {
+  bool result = true;
+  Str8RO s    = wapp_str8_lit("Do as I say, not as I do");
+
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("d")) != -1);
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("not")) != -1);
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("as I say")) != -1);
+
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("f")) == -1);
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("hello")) == -1);
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("not sa I")) == -1);
+  result = result && (wapp_str8_rfind(&s, wapp_str8_lit_ro("Do unto others as you would have them do to you")) == -1);
+
+  return wapp_tester_result(result);
+}
diff --git a/tests/str8/test_str8.h b/tests/str8/test_str8.h
index 84c7ebb..8ddec36 100644
--- a/tests/str8/test_str8.h
+++ b/tests/str8/test_str8.h
@@ -13,6 +13,8 @@ TestFuncResult test_str8_buf(void);
 TestFuncResult test_str8_get_index_within_bounds(void);
 TestFuncResult test_str8_get_index_out_of_bounds(void);
 TestFuncResult test_str8_set(void);
+TestFuncResult test_str8_find(void);
+TestFuncResult test_str8_rfind(void);
 
 #ifdef __cplusplus
 END_C_LINKAGE
diff --git a/tests/wapptest.c b/tests/wapptest.c
index 49f6703..1266e78 100644
--- a/tests/wapptest.c
+++ b/tests/wapptest.c
@@ -9,13 +9,30 @@
 
 
 int main(void) {
-  wapp_tester_run_tests(test_arena_allocator, test_arena_init, test_arena_init_succeeds_when_reserving_very_large_size,
-                        test_str8_lit, test_str8_lit_ro, test_str8_buf, test_str8_get_index_within_bounds,
-                        test_str8_get_index_out_of_bounds, test_str8_set, test_cpath_join_path, test_cpath_dirname,
-                        test_cpath_dirup, test_arena_alloc_succeeds_when_within_capacity, test_arena_alloc_fails_when_over_capacity,
-                        test_arena_realloc_bigger_size, test_arena_realloc_smaller_size, test_arena_clear,
-                        test_arena_destroy, test_commander_cmd_success, test_commander_cmd_failure,
-                        test_commander_cmd_out_buf_success, test_commander_cmd_out_buf_failure);
+  wapp_tester_run_tests(test_arena_allocator,
+                        test_arena_init,
+                        test_arena_init_succeeds_when_reserving_very_large_size,
+                        test_str8_lit,
+                        test_str8_lit_ro,
+                        test_str8_buf,
+                        test_str8_get_index_within_bounds,
+                        test_str8_get_index_out_of_bounds,
+                        test_str8_set,
+                        test_str8_find,
+                        test_str8_rfind,
+                        test_cpath_join_path,
+                        test_cpath_dirname,
+                        test_cpath_dirup,
+                        test_arena_alloc_succeeds_when_within_capacity,
+                        test_arena_alloc_fails_when_over_capacity,
+                        test_arena_realloc_bigger_size,
+                        test_arena_realloc_smaller_size,
+                        test_arena_clear,
+                        test_arena_destroy,
+                        test_commander_cmd_success,
+                        test_commander_cmd_failure,
+                        test_commander_cmd_out_buf_success,
+                        test_commander_cmd_out_buf_failure);
 
   return EXIT_SUCCESS;
 }