From c8d8829f8390a45b08125413cf825dbfbce89a7760b3828881299f64c26f3a25 Mon Sep 17 00:00:00 2001
From: Minimons <minimons@r35157.crypto>
Date: Wed, 3 Dec 2025 10:39:51 +0100
Subject: [PATCH] NoIssue: Add two tests for random Strings

---
 .../tests/sad/IncorrectRandomStringTests.java | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 src/test/java/com/r35157/libs/random/tests/sad/IncorrectRandomStringTests.java

diff --git a/src/test/java/com/r35157/libs/random/tests/sad/IncorrectRandomStringTests.java b/src/test/java/com/r35157/libs/random/tests/sad/IncorrectRandomStringTests.java
new file mode 100644
index 0000000..9144de5
--- /dev/null
+++ b/src/test/java/com/r35157/libs/random/tests/sad/IncorrectRandomStringTests.java
@@ -0,0 +1,54 @@
+package com.r35157.libs.random.tests.sad;
+
+import com.r35157.libs.random.RandomValueGeneratorInt;
+import com.r35157.libs.random.RandomValueGeneratorString;
+import com.r35157.libs.random.impl.ref.RandomValueGeneratorIntImpl;
+import com.r35157.libs.random.impl.ref.RandomValueGeneratorStringImpl;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@DisplayName("Sad Random Strings Tests")
+public class IncorrectRandomStringTests {
+
+    @DisplayName("Do initializing with <null> throw NPE?")
+    @Test
+    void testThatInitializingWithNullIntGeneratorThrows() {
+        // Arrange
+        String expectedErrorMsg = "Cannot initialize with <null> RandomValueGeneratorInt!";
+        RandomValueGeneratorInt rvgi = null;
+
+        // Act + Assert
+        NullPointerException thrown = assertThrows(
+                NullPointerException.class,
+                () -> new RandomValueGeneratorStringImpl(rvgi)
+        );
+
+        // Assert
+        String actualErrorMsg = thrown.getMessage();
+        assertEquals(expectedErrorMsg, actualErrorMsg);
+    }
+
+    @DisplayName("Do generating negative length Strings throw IAE?")
+    @Test
+    void testThatGeneratingStringsOfNegativeLengthThrowsIAE() {
+        // Arrange
+        int length = -1;
+        String expectedErrorMsg = "Cannot generate random Strings of size " + length + "!";
+        RandomValueGeneratorString sut = new RandomValueGeneratorStringImpl(rvgi);
+
+        // Act + Assert
+        IllegalArgumentException thrown = assertThrows(
+                IllegalArgumentException.class,
+                () -> sut.getSomeStringAlphaNumericOnly(length)
+        );
+
+        // Assert
+        String actualErrorMsg = thrown.getMessage();
+        assertEquals(expectedErrorMsg, actualErrorMsg);
+    }
+
+    private static final RandomValueGeneratorInt rvgi = new RandomValueGeneratorIntImpl();
+}