add missing tests

exercises/practice/anagram/.meta/tests.toml

@@ -78,3 +78,9 @@ include = false
 [33d3f67e-fbb9-49d3-a90e-0beb00861da7]
 description = "words other than themselves can be anagrams"
 reimplements = "a0705568-628c-4b55-9798-82e4acde51ca"
+
+[a6854f66-eec1-4afd-a137-62ef2870c051]
+description = "handles case of greek letters"
+
+[fd3509e5-e3ba-409d-ac3d-a9ac84d13296]
+description = "different characters may have the same bytes"

exercises/practice/anagram/tests/Tests.elm

@@ -103,10 +103,10 @@ tests =
                     Expect.equal []
                         (detect "mass" [ "last" ])
         , skip <|
-            test "detects unicode anagrams" <|
+            test "handles case of greek letters" <|
                 \() ->
                     Expect.equal [ "ΒΓΑ", "γβα" ]
-                        (detect "ΑΒΓ" [ "ΒΓΑ", "ΒΓΔ", "γβα" ])
+                        (detect "ΑΒΓ" [ "ΒΓΑ", "ΒΓΔ", "γβα", "αβγ" ])
         , skip <|
             test "eliminates misleading unicode anagrams" <|
                 \() ->
@@ -117,4 +117,9 @@ tests =
                 \() ->
                     Expect.equal []
                         (detect "patter" [ "tapper" ])
+        , skip <|
+            test "different characters may have the same bytes" <|
+                \() ->
+                    Expect.equal []
+                        (detect "a⬂" [ "€a" ])
         ]

exercises/practice/custom-set/.meta/tests.toml

@@ -114,6 +114,9 @@ description = "Difference (or Complement) of a set is a set of all elements that
 [c5ac673e-d707-4db5-8d69-7082c3a5437e]
 description = "Difference (or Complement) of a set is a set of all elements that are only in the first set -> difference of two non-empty sets is a set of elements that are only in the first set"
 
+[20d0a38f-7bb7-4c4a-ac15-90c7392ecf2b]
+description = "Difference (or Complement) of a set is a set of all elements that are only in the first set -> difference removes all duplicates in the first set"
+
 [c45aed16-5494-455a-9033-5d4c93589dc6]
 description = "Union returns a set of all elements in either set -> union of empty sets is an empty set"
 

exercises/practice/custom-set/tests/Tests.elm

@@ -211,6 +211,12 @@ tests =
                             |> CustomSet.toList
                             |> List.sort
                             |> Expect.equalLists [ 1, 3 ]
+            , skip <|
+                test "difference removes all duplicates in the first set" <|
+                    \() ->
+                        CustomSet.diff (CustomSet.fromList [ 1, 1 ]) (CustomSet.fromList [ 1 ])
+                            |> CustomSet.toList
+                            |> Expect.equalLists []
             ]
         , describe "A set is a subset if all of its elements are contained in the other set"
             [ skip <|

exercises/practice/reverse-string/.meta/tests.toml

@@ -26,3 +26,14 @@ description = "a palindrome"
 
 [b9e7dec1-c6df-40bd-9fa3-cd7ded010c4c]
 description = "an even-sized word"
+
+[1bed0f8a-13b0-4bd3-9d59-3d0593326fa2]
+description = "wide characters"
+
+[93d7e1b8-f60f-4f3c-9559-4056e10d2ead]
+description = "grapheme cluster with pre-combined form"
+
+[1028b2c1-6763-4459-8540-2da47ca512d9]
+description = "grapheme clusters"
+include = false
+comment = "String.reverse cannot handle that one"

exercises/practice/reverse-string/tests/Tests.elm

@@ -25,4 +25,10 @@ tests =
         , skip <|
             test "an even-sized word" <|
                 \() -> Expect.equal "reward" (reverse "drawer")
+        , skip <|
+            test "wide characters" <|
+                \() -> Expect.equal "猫子" (reverse "子猫")
+        , skip <|
+            test "grapheme cluster with pre-combined form" <|
+                \() -> Expect.equal "dnatsnehctsrüW" (reverse "Würstchenstand")
         ]

exercises/practice/roman-numerals/.meta/tests.toml

@@ -30,6 +30,9 @@ description = "6 is VI"
 [ff3fb08c-4917-4aab-9f4e-d663491d083d]
 description = "9 is IX"
 
+[6d1d82d5-bf3e-48af-9139-87d7165ed509]
+description = "16 is XVI"
+
 [2bda64ca-7d28-4c56-b08d-16ce65716cf6]
 description = "27 is XXVII"
 
@@ -42,6 +45,9 @@ description = "49 is XLIX"
 [d5b283d4-455d-4e68-aacf-add6c4b51915]
 description = "59 is LIX"
 
+[4465ffd5-34dc-44f3-ada5-56f5007b6dad]
+description = "66 is LXVI"
+
 [46b46e5b-24da-4180-bfe2-2ef30b39d0d0]
 description = "93 is XCIII"
 
@@ -51,38 +57,35 @@ description = "141 is CXLI"
 [267f0207-3c55-459a-b81d-67cec7a46ed9]
 description = "163 is CLXIII"
 
+[902ad132-0b4d-40e3-8597-ba5ed611dd8d]
+description = "166 is CLXVI"
+
 [cdb06885-4485-4d71-8bfb-c9d0f496b404]
 description = "402 is CDII"
 
 [6b71841d-13b2-46b4-ba97-dec28133ea80]
 description = "575 is DLXXV"
 
+[dacb84b9-ea1c-4a61-acbb-ce6b36674906]
+description = "666 is DCLXVI"
+
 [432de891-7fd6-4748-a7f6-156082eeca2f]
 description = "911 is CMXI"
 
 [e6de6d24-f668-41c0-88d7-889c0254d173]
 description = "1024 is MXXIV"
 
-[bb550038-d4eb-4be2-a9ce-f21961ac3bc6]
-description = "3000 is MMM"
-
-[6d1d82d5-bf3e-48af-9139-87d7165ed509]
-description = "16 is XVI"
-
-[4465ffd5-34dc-44f3-ada5-56f5007b6dad]
-description = "66 is LXVI"
-
-[902ad132-0b4d-40e3-8597-ba5ed611dd8d]
-description = "166 is CLXVI"
-
-[dacb84b9-ea1c-4a61-acbb-ce6b36674906]
-description = "666 is DCLXVI"
-
 [efbe1d6a-9f98-4eb5-82bc-72753e3ac328]
 description = "1666 is MDCLXVI"
 
+[bb550038-d4eb-4be2-a9ce-f21961ac3bc6]
+description = "3000 is MMM"
+
 [3bc4b41c-c2e6-49d9-9142-420691504336]
 description = "3001 is MMMI"
 
+[2f89cad7-73f6-4d1b-857b-0ef531f68b7e]
+description = "3888 is MMMDCCCLXXXVIII"
+
 [4e18e96b-5fbb-43df-a91b-9cb511fe0856]
 description = "3999 is MMMCMXCIX"

exercises/practice/roman-numerals/tests/Tests.elm

@@ -127,6 +127,11 @@ tests =
                 \() ->
                     Expect.equal "MMMI"
                         (toRoman 3001)
+        , skip <|
+            test "3888" <|
+                \() ->
+                    Expect.equal "MMMDCCCLXXXVIII"
+                        (toRoman 3888)
         , skip <|
             test "3999" <|
                 \() ->