diff --git a/src/test/java/edu/hw3/Task1Test.java b/src/test/java/edu/hw3/Task1Test.java
new file mode 100644
index 0000000..aa61c93
--- /dev/null
+++ b/src/test/java/edu/hw3/Task1Test.java
@@ -0,0 +1,25 @@
+package edu.hw3;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+public final class Task1Test {
+    @Test
+    @DisplayName("Тест из примера 1")
+    void test1() {
+        final String str = Task1.atbash("Hello world!");
+        assertThat(str).isEqualTo("Svool dliow!");
+    }
+
+    @Test
+    @DisplayName("Тест из примера 2")
+    void test2() {
+        final String str = Task1.atbash("Any fool can write code that a computer can understand. "
+                + "Good programmers write code that humans can understand. ― Martin Fowler");
+        assertThat(str).isEqualTo("Zmb ullo xzm dirgv xlwv gszg z xlnkfgvi xzm fmwvihgzmw. "
+                + "Tllw kiltiznnvih dirgv xlwv gszg sfnzmh xzm fmwvihgzmw. ― Nzigrm Uldovi"
+        );
+    }
+}