adding missing test cases

exercises/practice/roman-numerals/test/roman_numerals_test.clj

@@ -23,6 +23,9 @@
 (deftest nine
   (is (= "IX" (roman-numerals/numerals 9))))
 
+(deftest sixteen
+  (is (= "XVI" (roman-numerals/numerals 16))))
+
 (deftest twenty-seven
   (is (= "XXVII" (roman-numerals/numerals 27))))
 
@@ -32,6 +35,9 @@
 (deftest fifty-nine
   (is (= "LIX" (roman-numerals/numerals 59))))
 
+(deftest sixty-six
+  (is (="LXVI" (roman-numerals/numerals 66))))
+
 (deftest ninety-three
   (is (= "XCIII" (roman-numerals/numerals 93))))
 
@@ -41,12 +47,18 @@
 (deftest one-hundred-sixty-three
   (is (= "CLXIII" (roman-numerals/numerals 163))))
 
+(deftest one-hundred-sixty-six
+  (is (= "CLXVI" (roman-numerals/numerals 166))))
+
 (deftest four-hundred-two
   (is (= "CDII" (roman-numerals/numerals 402))))
 
 (deftest five-hundred-seventy-five
   (is (= "DLXXV" (roman-numerals/numerals 575))))
 
+(deftest six-hundred-sixty-six
+  (is (= "DCLXVI" (roman-numerals/numerals 666))))
+
 (deftest nine-hundred-eleven
   (is (= "CMXI" (roman-numerals/numerals 911))))
 
@@ -55,3 +67,12 @@
 
 (deftest three-thousand
   (is (= "MMM" (roman-numerals/numerals 3000))))
+
+(deftest three-thousand
+  (is (= "MMMI" (roman-numerals/numerals 3001))))
+
+(deftest three-thousand
+  (is (= "MMMDCCCLXXXVIII" (roman-numerals/numerals 3888))))
+
+(deftest three-thousand
+  (is (= "MMMCMXCIX" (roman-numerals/numerals 3999))))