Add test case for isAllCharactersUniqueAndInASCII()

Author: DatMV01

src/main/test/com/ctci/arraysandstrings/IsUniqueTest.java

@@ -0,0 +1,112 @@
+package com.ctci.arraysandstrings;
+
+import org.junit.jupiter.api.*;
+
+public class IsUniqueTest {
+
+    @Nested
+    @DisplayName("Test cases for isAllCharactersUniqueAndInASCII()")
+    class TestCasesForIsAllCharactersUniqueAndInASCII{
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_StringIsNull_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII(null));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_StringIsEmpty_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII(""));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_StringLengthSmallerOrEqual128_ReturnFalse() {
+            StringBuilder stringBuilder = new StringBuilder();
+
+            for (int i = 0; i < 128; i++) {
+                stringBuilder.append((char) i);
+            }
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII(stringBuilder.toString()));
+
+            stringBuilder.setLength(0);
+            for (int i = 1; i < 127; i++) {
+                stringBuilder.append((char) i);
+            }
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII(stringBuilder.toString()));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_StringLengthLargerThan128_ReturnFalse() {
+            StringBuilder stringBuilder = new StringBuilder();
+
+            for (int i = 0; i < 128; i++) {
+                stringBuilder.append((char) i);
+            }
+            stringBuilder.append("a");
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII(stringBuilder.toString()));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_DuplicateAtHead_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("aab"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("AAb"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("ááb"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("ÁÁb"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("1123456"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_DuplicateAtMiddle_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("abcbd"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("aBcBd"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("aưcưd"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("aƯcƯd"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("123436"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_DuplicateAtTail_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("aba"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("AbA"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("ăbă"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("ĂbĂ"));
+
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("1234566"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_OnlyOneCharacter_ReturnTrue() {
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("a"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("1"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("A"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("#"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_OnlyOneCharacter_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("á"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("Ô"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("€"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_InvalidString_ReturnFalse() {
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("ۇ"));
+            Assertions.assertFalse(IsUnique.isAllCharactersUniqueAndInASCII("áÂ"));
+        }
+
+        @Test
+        public void isAllCharactersUniqueAndInASCII_ValidString_ReturnTrue() {
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("aAb"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("abcBd"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII("abA"));
+            Assertions.assertTrue(IsUnique.isAllCharactersUniqueAndInASCII(
+                    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"));
+        }
+    }
+}