完成 RandomTools 单元测试

2024-12-27 18:05:59 +08:00
parent 36823c1181
commit f1491117de
3 changed files with 120 additions and 4 deletions
--- a/src/test/java/xyz/zhouxy/plusone/commons/util/RandomToolsTests.java
+++ b/src/test/java/xyz/zhouxy/plusone/commons/util/RandomToolsTests.java
@@ -0,0 +1,89 @@
+package xyz.zhouxy.plusone.commons.util;
+
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.security.SecureRandom;
+import java.util.Random;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+@SuppressWarnings("null")
+public class RandomToolsTests {
+
+    private static Random random;
+    private static SecureRandom secureRandom;
+    private static char[] sourceCharactersArray;
+    private static String sourceCharactersString;
+
+    @BeforeAll
+    public static void setUp() {
+        random = new Random();
+        secureRandom = new SecureRandom();
+        sourceCharactersArray = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
+        sourceCharactersString = "abcdefghijklmnopqrstuvwxyz";
+    }
+
+    @Test
+    public void randomStr_NullRandom_ThrowsException() {
+        assertThrows(IllegalArgumentException.class,
+                () -> RandomTools.randomStr(null, sourceCharactersArray, 5));
+        assertThrows(IllegalArgumentException.class,
+                () -> RandomTools.randomStr(null, sourceCharactersString, 5));
+    }
+
+    @Test
+    public void randomStr_NullSourceCharacters_ThrowsException() {
+        assertThrows(IllegalArgumentException.class, () -> RandomTools.randomStr(random, (char[]) null, 5));
+        assertThrows(IllegalArgumentException.class, () -> RandomTools.randomStr(random, (String) null, 5));
+    }
+
+    @Test
+    public void randomStr_NegativeLength_ThrowsException() {
+        assertThrows(IllegalArgumentException.class, () -> RandomTools.randomStr(random, sourceCharactersArray, -1));
+    }
+
+    @Test
+    public void randomStr_ZeroLength_ReturnsEmptyString() {
+        assertAll(
+                () -> assertEquals("", RandomTools.randomStr(random, sourceCharactersArray, 0)),
+                () -> assertEquals("", RandomTools.randomStr(random, sourceCharactersString, 0)),
+                () -> assertEquals("", RandomTools.randomStr(secureRandom, sourceCharactersArray, 0)),
+                () -> assertEquals("", RandomTools.randomStr(secureRandom, sourceCharactersString, 0)));
+    }
+
+    @Test
+    public void randomStr_PositiveLength_ReturnsRandomString() {
+        assertAll(
+                () -> assertEquals(5, RandomTools.randomStr(random, sourceCharactersArray, 5).length()),
+                () -> assertEquals(5, RandomTools.randomStr(random, sourceCharactersString, 5).length()),
+                () -> assertEquals(5, RandomTools.randomStr(secureRandom, sourceCharactersArray, 5).length()),
+                () -> assertEquals(5, RandomTools.randomStr(secureRandom, sourceCharactersString, 5).length()));
+    }
+
+    @Test
+    public void randomStr_ReturnsRandomString() {
+        String result = RandomTools.randomStr(sourceCharactersArray, 5);
+        assertEquals(5, result.length());
+    }
+
+    @Test
+    public void randomStr_StringSourceCharacters_ReturnsRandomString() {
+        String result = RandomTools.randomStr(sourceCharactersString, 5);
+        assertEquals(5, result.length());
+    }
+
+    @Test
+    public void secureRandomStr_ReturnsRandomString() {
+        String result = RandomTools.secureRandomStr(sourceCharactersArray, 5);
+        assertEquals(5, result.length());
+    }
+
+    @Test
+    public void secureRandomStr_StringSourceCharacters_ReturnsRandomString() {
+        String result = RandomTools.secureRandomStr(sourceCharactersString, 5);
+        assertEquals(5, result.length());
+    }
+}