test: add user signup mutation tests

Author: OLuwis

src/main/resources/graphql-test/userSignup.graphql

@@ -0,0 +1,8 @@
+mutation userSignup($username: String!, $email: String!, $password: String!) {
+    userSignup(username: $username, email: $email, password: $password) {
+        id
+        username
+        email
+        password
+    }
+}

src/test/java/com/luwis/application/integration/user/TestMutationUserSignup.java

@@ -0,0 +1,35 @@
+package com.luwis.application.integration.user;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.graphql.tester.AutoConfigureHttpGraphQlTester;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.graphql.test.tester.HttpGraphQlTester;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT)
+@AutoConfigureHttpGraphQlTester
+public class TestMutationUserSignup {
+
+    @Autowired 
+    private HttpGraphQlTester tester;
+    
+    @Test
+    void shouldReturnUserDetails() {
+        
+        String username = "Luis";
+        String email = "[email protected]";
+        String password = "12345678";
+        
+        tester.documentName("userSignup")
+        .variable("username", username)
+        .variable("email", email)
+        .variable("password", password)
+        .execute()
+        .path("userSignup", path -> path
+        .path("username").entity(String.class).isEqualTo(username)
+        .path("email").entity(String.class).isEqualTo(email)
+        .path("password").entity(String.class).isEqualTo(password));
+        
+    }
+    
+}