diff --git a/pom.xml b/pom.xml
index de78097..56681ab 100644
--- a/pom.xml
+++ b/pom.xml
@@ -86,6 +86,12 @@
             <version>2.10.1</version>
             <scope>compile</scope>
         </dependency>
+        <dependency>
+            <groupId>io.rest-assured</groupId>
+            <artifactId>rest-assured</artifactId>
+            <version>5.3.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/test/java/hse/java/restcountries/CountryServiceTest.java b/src/test/java/hse/java/restcountries/CountryServiceTest.java
new file mode 100644
index 0000000..a2420d3
--- /dev/null
+++ b/src/test/java/hse/java/restcountries/CountryServiceTest.java
@@ -0,0 +1,84 @@
+package hse.java.restcountries;
+
+import io.restassured.RestAssured;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static io.restassured.RestAssured.get;
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.Matchers.*;
+
+class CountryServiceTest {
+
+  private static final String API_BASE_URL = "https://restcountries.com/v3.1";
+
+  @BeforeAll
+  static void init() {
+    RestAssured.baseURI = API_BASE_URL;
+  }
+
+  @Test
+  @DisplayName("Verify that the list of all countries is not empty")
+  void shouldReturnNonEmptyList() {
+    get("/all")
+        .then()
+        .statusCode(200)
+        .body("$.size()", greaterThan(0));
+  }
+
+  @Test
+  @DisplayName("Verify that Russia has Moscow as its capital")
+  void checkRussiaCapital() {
+    given()
+        .pathParam("name", "russia")
+        .when()
+        .get("/name/{name}")
+        .then()
+        .statusCode(200)
+        .body("capital.flatten()", hasItem("Moscow"));
+  }
+
+  @Test
+  @DisplayName("Verify country name for alpha code DE")
+  void checkGermanyByCode() {
+    get("/alpha/de")
+        .then()
+        .statusCode(200)
+        .body("name.common", contains("Germany"));
+  }
+
+  @Test
+  @DisplayName("Should return 404 for non-existent country")
+  void testNonExistentCountry() {
+    get("/name/nonexistentcountryxyz")
+        .then()
+        .statusCode(404);
+  }
+
+  @Test
+  @DisplayName("Verify that every country has a positive population")
+  void testPopulationValues() {
+    get("/all")
+        .then()
+        .body("population", everyItem(greaterThan(0)));
+  }
+
+  @Test
+  @DisplayName("Verify that Estonia is located in Northern Europe")
+  void verifyEstoniaSubregion() {
+    get("/name/estonia")
+        .then()
+        .statusCode(200)
+        .body("[0].subregion", equalTo("Northern Europe"));
+  }
+
+  @Test
+  @DisplayName("Verify that Switzerland is an independent state")
+  void verifySwitzerlandIndependence() {
+    get("/name/switzerland")
+        .then()
+        .statusCode(200)
+        .body("[0].independent", is(true));
+  }
+}