implement tests

exercises/practice/anagram/test/anagram_test.clj

@@ -1,38 +1,93 @@
 (ns anagram-test
-  (:require [clojure.test :refer [deftest is]]
+  (:require [clojure.test :refer [deftest testing is]]
             anagram))
 
 (deftest no-matches
-  (is (= []
-         (anagram/anagrams-for "diaper" ["hello" "world" "zombies" "pants"]))))
+  (testing "No matches"
+    (is (= []
+           (anagram/anagrams-for "diaper" ["hello" "world" "zombies" "pants"])))))
 
-(deftest detect-simple-anagram
-  (is (= ["tan"] (anagram/anagrams-for "ant" ["tan" "stand" "at"]))))
+(deftest detects-two-anagrams
+  (testing "Detects two anagrams"
+    (is (= ["lemons", "melons"]
+           (anagram/anagrams-for "solemn" ["lemons", "cherry", "melons"])))))
 
-(deftest does-not-confuse-different-duplicates
-  (is (= [] (anagram/anagrams-for "galea" ["eagle"]))))
+(deftest does-not-detect-anagram-subsets
+  (testing "Does not detect anagram subsets"
+    (is (= []
+           (anagram/anagrams-for "good" ["dog", "goody"])))))
 
-(deftest eliminate-anagram-subsets
-  (is (= [] (anagram/anagrams-for "good" ["dog" "goody"]))))
+(deftest detects-anagram
+  (testing "Detects anagram"
+    (is (= ["inlets"]
+           (anagram/anagrams-for "listen" ["enlists", "google", "inlets", "banana"])))))
 
-(deftest detect-anagram
-  (is (= ["inlets"]
-         (let [coll ["enlists" "google" "inlets" "banana"]]
-           (anagram/anagrams-for "listen" coll)))))
+(deftest detects-three-anagrams
+  (testing "Detects three anagrams"
+    (is (= ["gallery", "regally", "largely"]
+           (anagram/anagrams-for "allergy" ["gallery", "ballerina", "regally", "clergy", "largely", "leading"])))))
 
-(deftest multiple-anagrams
-  (is (= ["gallery" "regally" "largely"]
-         (let [coll ["gallery" "ballerina" "regally"
-                     "clergy"  "largely"   "leading"]]
-           (anagram/anagrams-for "allergy" coll)))))
+(deftest detects-multiple-anagrams-with-different-case
+  (testing "Detects multiple anagrams with different case"
+    (is (= ["Eons", "ONES"]
+           (anagram/anagrams-for "nose" ["Eons", "ONES"])))))
 
-(deftest case-insensitive-anagrams
-  (is (= ["Carthorse"]
-         (let [coll ["cashregister" "Carthorse" "radishes"]]
-           (anagram/anagrams-for "Orchestra" coll)))))
+(deftest does-not-detect-non-anagrams-with-identical-checksum
+  (testing "Does not detect non-anagrams with identical checksum"
+    (is (= []
+           (anagram/anagrams-for "mass" ["last"])))))
 
-(deftest word-is-not-own-anagram
-  (is (= [] (anagram/anagrams-for "banana" ["banana"]))))
+(deftest detects-anagrams-case-insensitively
+  (testing "Detects anagrams case-insensitively"
+    (is (= ["Carthorse"]
+           (anagram/anagrams-for "Orchestra" ["cashregister", "Carthorse", "radishes"])))))
 
-(deftest capital-word-is-not-own-anagram
-  (is (= [] (anagram/anagrams-for "BANANA" ["banana"]))))
+(deftest detects-anagrams-using-case-insensitive-subject
+  (testing "Detects anagrams using case-insensitive subject"
+    (is (= ["carthorse"]
+           (anagram/anagrams-for "Orchestra" ["cashregister", "carthorse", "radishes"])))))
+
+(deftest detects-anagrams-using-case-insensitive-possible-matches
+  (testing "Detects anagrams using case-insensitive possible matches"
+    (is (= ["Carthorse"]
+           (anagram/anagrams-for "orchestra" ["cashregister", "Carthorse", "radishes"])))))
+
+(deftest does-not-detect-anagram-if-original-word-is-repeated
+  (testing "Does not detect an anagram if the original word is repeated"
+    (is (= []
+           (anagram/anagrams-for "go" ["goGoGO"])))))
+
+(deftest anagrams-must-use-all-letters-exactly-once
+  (testing "Anagrams must use all letters exactly once"
+    (is (= []
+           (anagram/anagrams-for "tapper" ["patter"])))))
+
+(deftest words-are-not-anagrams-of-themselves
+  (testing "Words are not anagrams of themselves"
+    (is (= []
+           (anagram/anagrams-for "BANANA" ["BANANA"])))))
+
+(deftest words-are-not-anagrams-of-themselves-even-if-letter-case-is-partially-different
+  (testing "Words are not anagrams of themselves even if letter case is partially different"
+    (is (= []
+           (anagram/anagrams-for "BANANA" ["Banana"])))))
+
+(deftest words-are-not-anagrams-of-themselves-even-if-letter-case-is-completely-different
+  (testing "Words are not anagrams of themselves even if letter case is completely different"
+    (is (= []
+           (anagram/anagrams-for "BANANA" ["banana"])))))
+
+(deftest words-other-than-themselves-can-be-anagrams
+  (testing "Words other than themselves can be anagrams"
+    (is (= ["Silent"]
+           (anagram/anagrams-for "LISTEN" ["LISTEN", "Silent"])))))
+
+(deftest handles-greek-letters
+  (testing "Handles case of greek letters"
+    (is (= ["ΒΓΑ", "γβα"]
+           (anagram/anagrams-for "ΑΒΓ" ["ΒΓΑ", "ΒΓΔ", "γβα", "αβγ"])))))
+
+(deftest different-characters-may-have-same-bytes
+  (testing "Different characters may have the same bytes"
+    (is (= []
+           (anagram/anagrams-for "a⬂" ["€a"])))))