springでwiremockを使用するための基底クラス

// src/test/java/.../support/WireMockStubs.java
package com.example.test.support;

import static com.github.tomakehurst.wiremock.client.WireMock.*;

import java.util.List;

import com.github.tomakehurst.wiremock.junit5.WireMockExtension;

public final class WireMockStubs {
  private WireMockStubs() {}

  /** GET 固定 JSON */
  public static void stubGetJson(WireMockExtension wm, String url, String json) {
    wm.stubFor(get(urlEqualTo(url)).willReturn(okJson(json)));
  }

  /** POST 固定 JSON（status 任意） */
  public static void stubPostJson(WireMockExtension wm, String url, String json, int status) {
    wm.stubFor(post(urlEqualTo(url))
        .willReturn(aResponse().withStatus(status)
            .withHeader("Content-Type", "application/json")
            .withBody(json)));
  }

  /** GET 動的（Handlebars：{{request.query.xxx}} 可） */
  public static void stubGetDynamic(WireMockExtension wm, String urlPath, String bodyTemplate) {
    wm.stubFor(get(urlPathEqualTo(urlPath))
        .willReturn(aResponse().withStatus(200)
            .withHeader("Content-Type", "application/json")
            .withBody(bodyTemplate)));
  }

  /** POST 動的（JSONPath：{{jsonPath request.body '$.id'}} 可） */
  public static void stubPostDynamic(WireMockExtension wm, String url, String bodyTemplate) {
    wm.stubFor(post(urlEqualTo(url))
        .willReturn(aResponse().withStatus(200)
            .withHeader("Content-Type", "application/json")
            .withBody(bodyTemplate)));
  }

  /** 同一エンドポイントで逐次応答（GET/POST 両対応） */
  public static void stubSequential(
      WireMockExtension wm, String method, String url, List<String> bodies, int status, String contentType) {
    final String scenario = method.toUpperCase() + " " + url + " SEQ";
    String state = "STARTED";
    for (int i = 0; i < bodies.size(); i++) {
      String next = (i == bodies.size() - 1) ? "DONE" : "CALL_" + (i + 1);
      var mapping = method.equalsIgnoreCase("GET") ? get(urlEqualTo(url)) : post(urlEqualTo(url));
      wm.stubFor(mapping
          .inScenario(scenario).whenScenarioStateIs(state)
          .willReturn(aResponse().withStatus(status)
              .withHeader("Content-Type", contentType)
              .withBody(bodies.get(i)))
          .willSetStateTo(next));
      state = next;
    }
    var mapping = method.equalsIgnoreCase("GET") ? get(urlEqualTo(url)) : post(urlEqualTo(url));
    wm.stubFor(mapping.inScenario(scenario).whenScenarioStateIs("DONE")
        .willReturn(aResponse().withStatus(status)
            .withHeader("Content-Type", contentType)
            .withBody(bodies.getLast())));
  }
}