add: supertypes tests

src/test/java/org/example/SupertypesTest.java

@@ -0,0 +1,27 @@
+package org.example;
+
+import io.restassured.RestAssured;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static io.restassured.RestAssured.given;
+import static io.restassured.RestAssured.when;
+import static org.hamcrest.Matchers.hasSize;
+
+public class SupertypesTest {
+
+    @BeforeAll
+    public static void supertypesTestSetup() {
+        RestAssured.baseURI = "https://api.magicthegathering.io/v1/supertypes";
+    }
+
+    @Test
+    public void getAllSupertypesShouldReturnSixElements(){
+        when().get().then().statusCode(200).body("supertypes", hasSize(6));
+    }
+
+    @Test
+    public void getSupertypesWithInvalidPathParamShouldReturnErrorNotFound(){
+        given().pathParam("id", 1).get("/{id}").then().statusCode(404);
+    }
+}