fix(firstleg): allow customs uploads up to 50MB

firstleg/src/test/java/com/baiyue/firstleg/customs/container/ContainerCustomsMultipartConfigurationContractTest.java

@@ -0,0 +1,35 @@
+package com.baiyue.firstleg.customs.container;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ContainerCustomsMultipartConfigurationContractTest {
+    private static final String FILE_LIMIT = "${FIRSTLEG_MULTIPART_MAX_FILE_SIZE:50MB}";
+    private static final String REQUEST_LIMIT = "${FIRSTLEG_MULTIPART_MAX_REQUEST_SIZE:52MB}";
+
+    @Test void applicationAndEnvironmentConfigsPermitFiftyMegabyteCustomsFiles() throws Exception {
+        assertLimits(read("firstleg/src/main/resources/application.yml"));
+        assertLimits(read("config/nacos/cn/firstleg-service.yml"));
+        assertLimits(read("config/nacos/local/firstleg-service.yml"));
+    }
+
+    @Test void customsOpenApiPublishesFileAndMultipartRequestLimits() throws Exception {
+        assertThat(read("firstleg/src/main/resources/openapi/customs-v1.yaml"))
+            .contains("任意格式且最大50MB", "multipart整请求上限52MB");
+    }
+
+    private static void assertLimits(String yaml) {
+        assertThat(yaml).contains("max-file-size: " + FILE_LIMIT, "max-request-size: " + REQUEST_LIMIT);
+    }
+
+    private static String read(String repositoryPath) throws Exception {
+        Path direct = Path.of(repositoryPath);
+        Path path = Files.exists(direct) ? direct : Path.of("..").resolve(repositoryPath).normalize();
+        return Files.readString(path, StandardCharsets.UTF_8);
+    }
+}