Add HTTP contract tests to order-service-restapi

Migrate api-gateway HTTP contracts from ftgo-order-service-contracts
to order-service-restapi/src/contractTest/. This completes the contract
test migration for Order Service.

Co-authored by Claude Code

Author: cer

ftgo-order-service/order-service-restapi/build.gradle

@@ -1,5 +1,17 @@
 plugins {
     id 'io.eventuate.plugins.gradle.testing.integration-tests'
+    id 'org.springframework.cloud.contract' version "$springCloudContractDependenciesVersion"
+}
+
+sourceSets {
+    contractTest {
+        java {
+            srcDir 'src/contractTest/java'
+        }
+        resources {
+            srcDir 'src/contractTest/resources'
+        }
+    }
 }
 
 dependencies {
@@ -16,4 +28,26 @@ dependencies {
     integrationTestImplementation(platform("org.springframework.cloud:spring-cloud-contract-dependencies:$springCloudContractDependenciesVersion"))
     integrationTestImplementation 'org.springframework.cloud:spring-cloud-contract-stub-runner'
     integrationTestImplementation testFixtures(project(':order-service-domain'))
+
+    contractTestImplementation project(':order-service-domain')
+    contractTestImplementation project(':order-service-persistence')
+    contractTestImplementation testFixtures(project(':order-service-domain'))
+    contractTestImplementation 'org.springframework.boot:spring-boot-starter-test'
+    contractTestImplementation 'org.springframework.cloud:spring-cloud-starter-contract-verifier'
+    contractTestImplementation 'io.rest-assured:spring-mock-mvc'
+    contractTestImplementation 'io.eventuate.common:eventuate-common-json-mapper'
+}
+
+contracts {
+    testFramework = org.springframework.cloud.contract.verifier.config.TestFramework.JUNIT5
+    contractsDslDir = file("${projectDir}/src/contractTest/resources/contracts")
+    baseClassForTests = "net.chrisrichardson.ftgo.orderservice.contracts.HttpBase"
+}
+
+contractTest {
+    useJUnitPlatform()
+}
+
+tasks.named('processContractTestResources') {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
 }

ftgo-order-service/order-service-restapi/src/contractTest/java/net/chrisrichardson/ftgo/orderservice/contracts/HttpBase.java

@@ -0,0 +1,39 @@
+package net.chrisrichardson.ftgo.orderservice.contracts;
+
+import io.eventuate.common.json.mapper.JSonMapper;
+import io.restassured.module.mockmvc.RestAssuredMockMvc;
+import net.chrisrichardson.ftgo.common.CommonJsonMapperInitializer;
+import net.chrisrichardson.ftgo.orderservice.OrderDetailsMother;
+import net.chrisrichardson.ftgo.orderservice.domain.OrderRepository;
+import net.chrisrichardson.ftgo.orderservice.domain.OrderService;
+import net.chrisrichardson.ftgo.orderservice.web.OrderController;
+import org.junit.jupiter.api.BeforeEach;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.test.web.servlet.setup.StandaloneMockMvcBuilder;
+
+import java.util.Optional;
+
+import static java.util.Optional.empty;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public abstract class HttpBase {
+
+    private StandaloneMockMvcBuilder controllers(Object... controllers) {
+        CommonJsonMapperInitializer.registerMoneyModule();
+        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter(JSonMapper.objectMapper);
+        return MockMvcBuilders.standaloneSetup(controllers).setMessageConverters(converter);
+    }
+
+    @BeforeEach
+    public void setup() {
+        OrderService orderService = mock(OrderService.class);
+        OrderRepository orderRepository = mock(OrderRepository.class);
+        OrderController orderController = new OrderController(orderService, orderRepository);
+
+        when(orderRepository.findById(OrderDetailsMother.ORDER_ID)).thenReturn(Optional.of(OrderDetailsMother.CHICKEN_VINDALOO_ORDER));
+        when(orderRepository.findById(555L)).thenReturn(empty());
+        RestAssuredMockMvc.standaloneSetup(controllers(orderController));
+    }
+}

ftgo-order-service/order-service-restapi/src/contractTest/resources/contracts/api-gateway/http/getNonExistentOrder.groovy

@@ -0,0 +1,11 @@
+package contracts.http
+
+org.springframework.cloud.contract.spec.Contract.make {
+    request {
+        method 'GET'
+        url '/orders/555'
+    }
+    response {
+        status 404
+    }
+}

ftgo-order-service/order-service-restapi/src/contractTest/resources/contracts/api-gateway/http/getOrder.groovy

@@ -0,0 +1,15 @@
+package contracts.http
+
+org.springframework.cloud.contract.spec.Contract.make {
+    request {
+        method 'GET'
+        url '/orders/99'
+    }
+    response {
+        status 200
+        headers {
+            header('Content-Type': 'application/json')
+        }
+        body('''{"orderId" : 99, "state" : "APPROVAL_PENDING", "orderTotal" : "61.70"}''')
+    }
+}