Spring 集成测试：用真实边界验证数据库与 HTTP 行为

try (GenericContainer<?> dependency = new GenericContainer<>(verifiedImage)
        .withExposedPorts(8080)
        .waitingFor(Wait.forHttp("/ready").forStatusCode(200))) {
    dependency.start(); // 启动并等待指定就绪条件，不只是进程存在。
    String host = dependency.getHost(); // 宿主地址由运行环境提供，不能写死localhost。
    int port = dependency.getMappedPort(8080); // 使用动态映射端口，避免并行端口冲突。
    verifyApplicationContract(host, port); // 应用迁移和业务断言仍需单独执行。
}

import java.util.*;
public class Main {
    record Access(String resource,boolean write){}
    static List<String> conflicts(List<List<Access>> tests){
        Map<String,Map<Integer,Boolean>> resources=new HashMap<>();
        for(int i=0;i<tests.size();i++)for(Access a:tests.get(i)){
            if(a.resource()==null||a.resource().isBlank())throw new IllegalArgumentException("resource");
            resources.computeIfAbsent(a.resource(),k->new HashMap<>()).merge(i,a.write(),(x,y)->x||y); // 同用例写模式覆盖读模式。
        }
        Set<String> pairs=new HashSet<>();
        for(Map<Integer,Boolean> modes:resources.values()){
            List<Integer> ids=new ArrayList<>(modes.keySet());
            for(int i=0;i<ids.size();i++)for(int j=i+1;j<ids.size();j++){
                int a=ids.get(i),b=ids.get(j);if(modes.get(a)||modes.get(b))pairs.add(Math.min(a,b)+":"+Math.max(a,b)); // 读读共存，其他共享访问标记冲突。
            }
        }
        List<String> out=new ArrayList<>(pairs);Collections.sort(out);return out; // 多资源同一对去重后稳定展示。
    }
    static void eq(List<String> e,List<String> a){if(!e.equals(a))throw new AssertionError(a);}
    public static void main(String[] args){
        Access read=new Access("orders",false),write=new Access("orders",true);
        eq(List.of("0:1"),conflicts(List.of(List.of(write),List.of(read),List.of(new Access("users",false)))));
        eq(List.of(),conflicts(List.of(List.of(read),List.of(read))));
        eq(List.of("0:1"),conflicts(List.of(List.of(read,write,write),List.of(read))));
        eq(List.of(),conflicts(List.of()));
        eq(List.of("0:1","0:2","1:2"),conflicts(List.of(List.of(write),List.of(write),List.of(write))));
        try{conflicts(List.of(List.of(new Access("",false))));throw new AssertionError();}catch(IllegalArgumentException expected){}
        System.out.println("PASS 6 tests");
    }
}