diff --git a/proJect/pom.xml b/proJect/pom.xml
index 436410e..dadefc0 100644
--- a/proJect/pom.xml
+++ b/proJect/pom.xml
@@ -12,5 +12,26 @@
         <maven.compiler.target>11</maven.compiler.target>
     </properties>
 
-
+    <dependencies>
+    <dependency>
+        <groupId>org.testng</groupId>
+        <artifactId>testng</artifactId>
+        <version>7.8.0</version>
+        <scope>test</scope>
+    </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.1.2</version>
+                <configuration>
+                    <suiteXmlFiles>
+                        <suiteXmlFile>src/test/resources/testng.xml</suiteXmlFile> <!-- если используете XML-конфиг -->
+                    </suiteXmlFiles>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>
\ No newline at end of file
diff --git a/proJect/src/main/java/anlov/java/Factorial.java b/proJect/src/main/java/anlov/java/Factorial.java
new file mode 100644
index 0000000..5e0b32f
--- /dev/null
+++ b/proJect/src/main/java/anlov/java/Factorial.java
@@ -0,0 +1,15 @@
+package anlov.java;
+
+public class Factorial {
+
+    public static long getFactorial(int num) {
+        long factorial = 1;
+        if (num < 0) {
+            throw new IllegalArgumentException("Число должно быть положительным");
+        }
+        for (int i = 1; i <= num; i++) {
+            factorial *= i;
+        }
+        return factorial;
+    }
+}
diff --git a/proJect/src/test/java/FactorialTests.java b/proJect/src/test/java/FactorialTests.java
new file mode 100644
index 0000000..c1cd12e
--- /dev/null
+++ b/proJect/src/test/java/FactorialTests.java
@@ -0,0 +1,36 @@
+import anlov.java.Factorial;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import static org.testng.Assert.assertEquals;
+
+public class FactorialTests {
+
+    @Test
+    void factorialOfZeroShouldBeOne() {
+        assertEquals(Factorial.getFactorial(0), 1, "Факториал нуля равен 1");
+    }
+
+    @Test(expectedExceptions = IllegalArgumentException.class)
+    public void negativeInputShouldThrowException() {
+        Factorial.getFactorial(-1);
+    }
+
+    @DataProvider(name = "factorialData")
+    public Object[][] provideFactorialData() {
+        return new Object[][]{
+                {0, 1},
+                {1, 1},
+                {2, 2},
+                {3, 6},
+                {5, 120},
+                {7, 5040}
+        };
+    }
+
+    @Test(dataProvider = "factorialData")
+    public void testFactorial(int input, int expected) {
+        assertEquals(Factorial.getFactorial(input), expected);
+    }
+
+}
\ No newline at end of file