added tests for FlatHashtbl

tests/test_flatHashtbl.ml

@@ -0,0 +1,91 @@
+
+open OUnit
+
+module IHashtbl = FlatHashtbl.Make(struct
+  type t = int
+  let equal i j = i = j
+  let hash i = i
+end)
+
+let test_add () =
+  let h = IHashtbl.create 5 in
+  IHashtbl.replace h 42 "foo";
+  OUnit.assert_equal (IHashtbl.find h 42) "foo"
+
+let my_list = 
+  [ 1, "a";
+    2, "b";
+    3, "c";
+    4, "d";
+  ]
+
+let my_seq = Sequence.of_list my_list
+
+let test_of_seq () =
+  let h = IHashtbl.create 5 in
+  IHashtbl.of_seq h my_seq;
+  OUnit.assert_equal (IHashtbl.find h 2) "b";
+  OUnit.assert_equal (IHashtbl.find h 1) "a";
+  OUnit.assert_raises Not_found (fun () -> IHashtbl.find h 42);
+  ()
+
+let test_to_seq () =
+  let h = IHashtbl.create 5 in
+  IHashtbl.of_seq h my_seq;
+  let l = Sequence.to_list (IHashtbl.to_seq h) in
+  OUnit.assert_equal my_list (List.sort compare l)
+
+let test_resize () =
+  let h = IHashtbl.create 5 in
+  for i = 0 to 10 do
+    IHashtbl.replace h i (string_of_int i);
+  done;
+  OUnit.assert_bool "must have been resized" (IHashtbl.length h > 5);
+  ()
+
+let test_eq () =
+  let h = IHashtbl.create 3 in
+  IHashtbl.replace h 1 "odd";
+  IHashtbl.replace h 2 "even";
+  OUnit.assert_equal (IHashtbl.find h 3) "odd";
+  OUnit.assert_equal (IHashtbl.find h 51) "odd";
+  OUnit.assert_equal (IHashtbl.find h 42) "even";
+  ()
+
+let test_copy () =
+  let h = IHashtbl.create 2 in
+  IHashtbl.replace h 1 "one";
+  OUnit.assert_equal (IHashtbl.find h 1) "one";
+  OUnit.assert_raises Not_found (fun () -> IHashtbl.find h 2);
+  let h' = IHashtbl.copy h in
+  IHashtbl.replace h' 2 "two";
+  OUnit.assert_equal (IHashtbl.find h' 1) "one";
+  OUnit.assert_equal (IHashtbl.find h' 2) "two";
+  OUnit.assert_equal (IHashtbl.find h 1) "one";
+  OUnit.assert_raises Not_found (fun () -> IHashtbl.find h 2);
+  ()
+
+let test_remove () =
+  let h = IHashtbl.create 3 in
+  IHashtbl.of_seq h my_seq;
+  OUnit.assert_equal (IHashtbl.find h 2) "b";
+  OUnit.assert_equal (IHashtbl.find h 3) "c";
+  OUnit.assert_equal (IHashtbl.find h 4) "d";
+  OUnit.assert_equal (IHashtbl.length h) 4;
+  IHashtbl.remove h 2;
+  OUnit.assert_equal (IHashtbl.find h 3) "c";
+  OUnit.assert_equal (IHashtbl.length h) 3;
+  (* test that 2 has been removed *)
+  OUnit.assert_raises Not_found (fun () -> IHashtbl.find h 2)
+
+let suite =
+  "test_pHashtbl" >:::
+    [ "test_add" >:: test_add;
+      "test_of_seq" >:: test_of_seq;
+      "test_to_seq" >:: test_to_seq;
+      "test_resize" >:: test_resize;
+      "test_eq" >:: test_eq;
+      "test_copy" >:: test_copy;
+      "test_remove" >:: test_remove;
+    ]
+

tests/tests.ml

@@ -5,10 +5,10 @@ open OUnit
 let suite =
   "all_tests" >:::
     [ Test_pHashtbl.suite;
+      Test_flatHashtbl.suite;
       Test_heap.suite;
       Test_graph.suite;
       Test_univ.suite;
-      Test_cache.suite;
     ]
 
 let _ =