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Add test case for isAllCharactersUniqueAndInASCII()
  • Loading branch information
DatMV01 committed Jul 27, 2024
commit 6d3e0db5dc6ef7e315a9de583ccce5cf8af7b5c5
112 changes: 112 additions & 0 deletions src/main/test/com/ctci/arraysandstrings/IsUniqueTest.java
Original file line number Diff line number Diff line change
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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"));
}
}
}