test(ext-mcp): migrate integration and security suites to flash-testing
McpExtensionIntegrationTest: 10 stateless JSON-RPC calls against one server config, so one class-scoped server replaces a boot per test. 117 to 85 code lines. McpExtensionSecurityTest: the four server configurations it exercises — AUTO without oidc, REQUIRED with a derived resource identifier, REQUIRED with an explicit one, and REQUIRED with advertised scopes — become four named servers sharing one FakeOidcProvider, replacing eight boots and a freePort() helper. 151 to 128 code lines. The boot-rejection test still builds its app directly: a harness whose job is to boot an app is the wrong tool for asserting that booting fails. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Zakaria El Orche
co-authored by
Claude Opus 5
Claude Opus 5
parent
e0ad83eb2f
commit
c02459dd7c
+15
-50
@@ -2,16 +2,10 @@ package dev.relism.flash.ext.mcp;
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import com.fasterxml.jackson.databind.JsonNode;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import dev.relism.flash.extension.FlashApp;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.BeforeEach;
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import dev.relism.flash.testing.FlashResponse;
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import dev.relism.flash.testing.FlashTest;
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import org.junit.jupiter.api.Test;
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import java.net.ServerSocket;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import org.junit.jupiter.api.extension.RegisterExtension;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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@@ -22,34 +16,15 @@ class McpExtensionIntegrationTest {
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private static final ObjectMapper MAPPER = new ObjectMapper();
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private FlashApp app;
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private String mcpUrl;
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private HttpClient client;
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@BeforeEach
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void setUp() throws Exception {
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int port;
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try (ServerSocket s = new ServerSocket(0)) {
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port = s.getLocalPort();
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}
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mcpUrl = "http://127.0.0.1:" + port + "/mcp";
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client = HttpClient.newHttpClient();
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McpConfig config = McpConfig.builder("test-server")
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// Every test here is a stateless JSON-RPC call against the same server, so one boot for
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// the class rather than one per test.
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@RegisterExtension
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static FlashTest mcp = FlashTest.of(app -> app.install(new McpExtension(
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McpConfig.builder("test-server")
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.version("9.9.9")
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.toolsPackage("dev.relism.flash.ext.mcp.fixtures")
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.security(McpSecurity.NONE)
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.build();
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app = FlashApp.create(port);
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app.install(new McpExtension(config));
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app.start();
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}
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@AfterEach
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void tearDown() {
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if (app != null) app.stop();
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}
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.build())));
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@Test
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void initialize_returnsProtocolVersionCapabilitiesAndServerInfo() throws Exception {
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@@ -104,17 +79,13 @@ class McpExtensionIntegrationTest {
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}
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@Test
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void notification_returns202WithEmptyBody() throws Exception {
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String body = "{\"jsonrpc\":\"2.0\",\"method\":\"notifications/initialized\"}";
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HttpResponse<String> resp = post(body);
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assertEquals(202, resp.statusCode());
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void notification_returns202WithEmptyBody() {
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post("{\"jsonrpc\":\"2.0\",\"method\":\"notifications/initialized\"}").expectStatus(202);
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}
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@Test
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void malformedJson_returns400ParseError() throws Exception {
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HttpResponse<String> resp = post("not json");
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assertEquals(400, resp.statusCode());
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JsonNode json = MAPPER.readTree(resp.body());
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JsonNode json = MAPPER.readTree(post("not json").expectStatus(400).body());
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assertEquals(-32700, json.get("error").get("code").asInt());
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}
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@@ -128,16 +99,10 @@ class McpExtensionIntegrationTest {
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private JsonNode call(int id, String method, String paramsJson) throws Exception {
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String body = "{\"jsonrpc\":\"2.0\",\"id\":" + id + ",\"method\":\"" + method + "\",\"params\":" + paramsJson + "}";
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HttpResponse<String> resp = post(body);
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assertEquals(200, resp.statusCode());
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return MAPPER.readTree(resp.body());
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return MAPPER.readTree(post(body).expectStatus(200).body());
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}
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private HttpResponse<String> post(String body) throws Exception {
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HttpRequest req = HttpRequest.newBuilder(URI.create(mcpUrl))
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.header("Content-Type", "application/json")
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.POST(HttpRequest.BodyPublishers.ofString(body))
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.build();
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return client.send(req, HttpResponse.BodyHandlers.ofString());
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private FlashResponse post(String body) {
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return mcp.request().json(body).post("/mcp");
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}
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}
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+101
-116
@@ -3,16 +3,15 @@ package dev.relism.flash.ext.mcp;
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import dev.relism.flash.ext.oidc.OidcConfig;
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import dev.relism.flash.ext.oidc.OidcExtension;
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import dev.relism.flash.extension.FlashApp;
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import org.junit.jupiter.api.AfterEach;
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import dev.relism.flash.extension.FlashApplication;
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import dev.relism.flash.extension.FlashConfiguration;
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import dev.relism.flash.testing.FlashRequest;
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import dev.relism.flash.testing.FlashResponse;
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import dev.relism.flash.testing.FlashTest;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.extension.RegisterExtension;
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import java.net.ServerSocket;
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import java.net.URI;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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@@ -20,175 +19,161 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
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* Exercises the actual OAuth2 resolution rules against a real {@code flash-ext-oidc}
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* installation backed by {@link FakeOidcProvider} — real discovery, real JWKS, real RS256
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* tokens — plus the fail-fast/degrade behavior when oidc is absent.
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*
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* <p>Four server configurations differ only in how MCP security is declared, so each gets its
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* own {@link FlashTest} and they share one provider.
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*/
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class McpExtensionSecurityTest {
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private static final String TOOLS_PACKAGE = "dev.relism.flash.ext.mcp.fixtures";
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private static final String EXPLICIT_RESOURCE_ID = "https://mcp.example.com/mcp";
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private FlashApp app;
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private FakeOidcProvider provider;
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private static final FakeOidcProvider provider = newProvider();
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@AfterEach
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void tearDown() {
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if (app != null) app.stop();
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if (provider != null) provider.close();
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/** MCP asked for AUTO security with no oidc installed — should degrade to public. */
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@RegisterExtension
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static FlashTest degraded = FlashTest.of(app -> app.install(new McpExtension(
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McpConfig.builder("auto-server")
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.toolsPackage(TOOLS_PACKAGE)
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.security(McpSecurity.AUTO)
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.build())));
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/** REQUIRED with oidc, resource identifier derived from the request. */
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@RegisterExtension
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static FlashTest secured = FlashTest.of(securedApp(null, null));
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/** REQUIRED with oidc and an explicitly declared resource identifier. */
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@RegisterExtension
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static FlashTest securedWithResourceId = FlashTest.of(securedApp(EXPLICIT_RESOURCE_ID, null));
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/** REQUIRED with oidc and advertised scopes. */
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@RegisterExtension
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static FlashTest securedWithScopes =
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FlashTest.of(securedApp(null, new String[] {"openid", "profile", "email"}));
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@AfterAll
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static void closeProvider() {
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provider.close();
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}
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// ── No oidc installed ────────────────────────────────────────────────────
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@Test
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void required_withoutOidc_throwsAtBoot() throws Exception {
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int port = freePort();
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app = FlashApp.create(port);
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void required_withoutOidc_throwsAtBoot() {
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// Asserting that boot fails, so this one builds its app directly rather than through
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// the harness; port(0) still removes the old free-port dance.
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FlashApp app = FlashApp.create(FlashConfiguration.builder()
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.port(0).host("127.0.0.1").shutdownDrainTimeoutMs(250).build());
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app.install(new McpExtension(McpConfig.builder("secure-server")
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.toolsPackage(TOOLS_PACKAGE)
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.security(McpSecurity.REQUIRED)
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.build()));
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assertThrows(IllegalStateException.class, () -> app.start());
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try {
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assertThrows(IllegalStateException.class, app::start);
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} finally {
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app.stop().join();
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}
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}
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@Test
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void auto_withoutOidc_degradesToPublic() throws Exception {
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int port = freePort();
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app = FlashApp.create(port);
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app.install(new McpExtension(McpConfig.builder("auto-server")
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.toolsPackage(TOOLS_PACKAGE)
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.security(McpSecurity.AUTO)
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.build()));
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app.start();
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HttpResponse<String> resp = post(port, initializeBody(), null);
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assertEquals(200, resp.statusCode());
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void auto_withoutOidc_degradesToPublic() {
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post(degraded, initializeBody(), null).expectStatus(200);
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}
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@Test
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void required_withOidc_rejectsMissingToken() throws Exception {
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int port = bootSecuredApp(null);
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// ── REQUIRED with oidc ───────────────────────────────────────────────────
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HttpResponse<String> resp = post(port, initializeBody(), null);
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assertEquals(401, resp.statusCode());
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@Test
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void required_withOidc_rejectsMissingToken() {
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post(secured, initializeBody(), null).expectStatus(401);
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}
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@Test
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void required_withOidc_rejectsWrongAudience() throws Exception {
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int port = bootSecuredApp("https://mcp.example.com/mcp");
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String token = provider.signToken("user-1", "https://someone-else.example.com/resource");
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HttpResponse<String> resp = post(port, initializeBody(), token);
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assertEquals(403, resp.statusCode());
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post(securedWithResourceId, initializeBody(), token).expectStatus(403);
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}
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@Test
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void required_withOidc_acceptsValidAudience() throws Exception {
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String resourceId = "https://mcp.example.com/mcp";
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int port = bootSecuredApp(resourceId);
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String token = provider.signToken("user-1", resourceId);
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String token = provider.signToken("user-1", EXPLICIT_RESOURCE_ID);
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HttpResponse<String> resp = post(port, initializeBody(), token);
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assertEquals(200, resp.statusCode());
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assertTrue(resp.body().contains("\"protocolVersion\""));
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post(securedWithResourceId, initializeBody(), token)
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.expectStatus(200)
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.expectBodyContains("\"protocolVersion\"");
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}
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@Test
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void required_withOidc_noExplicitResourceIdentifier_derivesFromRequestAndEnforcesAudience() throws Exception {
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int port = bootSecuredApp(null);
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String derivedResourceId = "http://127.0.0.1:" + port + "/mcp";
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String derivedResourceId = "http://127.0.0.1:" + secured.port() + "/mcp";
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String matching = provider.signToken("user-1", derivedResourceId);
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assertEquals(200, post(port, initializeBody(), matching).statusCode());
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String mismatched = provider.signToken("user-1", "https://someone-else.example.com/resource");
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assertEquals(403, post(port, initializeBody(), mismatched).statusCode());
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post(secured, initializeBody(), provider.signToken("user-1", derivedResourceId))
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.expectStatus(200);
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post(secured, initializeBody(), provider.signToken("user-1", "https://someone-else.example.com/resource"))
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.expectStatus(403);
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}
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@Test
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void required_withOidc_missingToken_challengeIncludesResourceMetadata() throws Exception {
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int port = bootSecuredApp(null);
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void required_withOidc_missingToken_challengeIncludesResourceMetadata() {
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FlashResponse response = post(secured, initializeBody(), null).expectStatus(401);
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HttpResponse<String> resp = post(port, initializeBody(), null);
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assertEquals(401, resp.statusCode());
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String challenge = resp.headers().firstValue("WWW-Authenticate").orElse("");
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assertTrue(challenge.contains(
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"resource_metadata=\"http://127.0.0.1:" + port + "/.well-known/oauth-protected-resource/mcp\""),
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String challenge = response.header("WWW-Authenticate");
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assertTrue(challenge != null && challenge.contains("resource_metadata=\"http://127.0.0.1:"
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+ secured.port() + "/.well-known/oauth-protected-resource/mcp\""),
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"WWW-Authenticate: " + challenge);
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}
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// ── Protected resource metadata ──────────────────────────────────────────
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@Test
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void required_withOidc_noExplicitConfig_publishesProtectedResourceMetadata() throws Exception {
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int port = bootSecuredApp(null);
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void required_withOidc_noExplicitConfig_publishesProtectedResourceMetadata() {
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FlashResponse response = secured.get("/.well-known/oauth-protected-resource/mcp")
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.expectStatus(200)
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.expectBodyContains("\"resource\":\"http://127.0.0.1:" + secured.port() + "/mcp\"")
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.expectBodyContains("\"authorization_servers\":[\"" + provider.issuer() + "\"]");
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HttpResponse<String> resp = HttpClient.newHttpClient().send(
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HttpRequest.newBuilder(URI.create(
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"http://127.0.0.1:" + port + "/.well-known/oauth-protected-resource/mcp")).GET().build(),
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HttpResponse.BodyHandlers.ofString());
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assertEquals(200, resp.statusCode());
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assertTrue(resp.body().contains("\"resource\":\"http://127.0.0.1:" + port + "/mcp\""), resp.body());
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assertTrue(resp.body().contains("\"authorization_servers\":[\"" + provider.issuer() + "\"]"), resp.body());
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assertTrue(!resp.body().contains("scopes_supported"), "scopes_supported must be omitted when unset: " + resp.body());
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assertTrue(!response.body().contains("scopes_supported"),
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"scopes_supported must be omitted when unset: " + response.body());
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}
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@Test
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void scopesSupported_published_inProtectedResourceMetadata() throws Exception {
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provider = new FakeOidcProvider();
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int port = freePort();
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app = FlashApp.create(port);
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app.install(new OidcExtension(OidcConfig.builder(
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provider.issuer(), "mcp-client", "secret", "/auth/callback").build()));
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app.install(new McpExtension(McpConfig.builder("secure-server")
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.toolsPackage(TOOLS_PACKAGE)
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.security(McpSecurity.REQUIRED)
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.scopesSupported("openid", "profile", "email")
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.build()));
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app.start();
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HttpResponse<String> resp = HttpClient.newHttpClient().send(
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HttpRequest.newBuilder(URI.create(
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"http://127.0.0.1:" + port + "/.well-known/oauth-protected-resource/mcp")).GET().build(),
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HttpResponse.BodyHandlers.ofString());
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assertEquals(200, resp.statusCode());
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assertTrue(resp.body().contains("\"scopes_supported\":[\"openid\",\"profile\",\"email\"]"), resp.body());
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void scopesSupported_published_inProtectedResourceMetadata() {
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securedWithScopes.get("/.well-known/oauth-protected-resource/mcp")
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.expectStatus(200)
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.expectBodyContains("\"scopes_supported\":[\"openid\",\"profile\",\"email\"]");
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}
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// ── Helpers ──────────────────────────────────────────────────────────────
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private int bootSecuredApp(String resourceIdentifier) throws Exception {
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provider = new FakeOidcProvider();
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int port = freePort();
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private static FlashApplication securedApp(String resourceIdentifier, String[] scopesSupported) {
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return app -> {
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app.install(new OidcExtension(OidcConfig.builder(
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provider.issuer(), "mcp-client", "secret", "/auth/callback").build()));
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OidcConfig oidcConfig = OidcConfig.builder(
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provider.issuer(), "mcp-client", "secret", "/auth/callback")
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.build();
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var mcpBuilder = McpConfig.builder("secure-server")
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McpConfig.Builder mcp = McpConfig.builder("secure-server")
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.toolsPackage(TOOLS_PACKAGE)
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.security(McpSecurity.REQUIRED);
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if (resourceIdentifier != null) mcpBuilder.resourceIdentifier(resourceIdentifier);
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if (resourceIdentifier != null) mcp.resourceIdentifier(resourceIdentifier);
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if (scopesSupported != null) mcp.scopesSupported(scopesSupported);
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app.install(new McpExtension(mcp.build()));
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};
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}
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app = FlashApp.create(port);
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app.install(new OidcExtension(oidcConfig));
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app.install(new McpExtension(mcpBuilder.build()));
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app.start();
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return port;
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private static FlashResponse post(FlashTest server, String body, String bearerToken) {
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FlashRequest request = server.request().header("Accept", "application/json").json(body);
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if (bearerToken != null) request.header("Authorization", "Bearer " + bearerToken);
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return request.post("/mcp");
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}
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private static String initializeBody() {
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return "{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"initialize\",\"params\":{}}";
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}
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private static int freePort() throws Exception {
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try (ServerSocket s = new ServerSocket(0)) {
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return s.getLocalPort();
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private static FakeOidcProvider newProvider() {
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try {
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return new FakeOidcProvider();
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} catch (Exception failure) {
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throw new IllegalStateException("Could not start the fake OIDC provider", failure);
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}
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}
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private static HttpResponse<String> post(int port, String body, String bearerToken) throws Exception {
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HttpRequest.Builder req = HttpRequest.newBuilder(URI.create("http://127.0.0.1:" + port + "/mcp"))
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.header("Content-Type", "application/json")
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.header("Accept", "application/json")
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.POST(HttpRequest.BodyPublishers.ofString(body));
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if (bearerToken != null) req.header("Authorization", "Bearer " + bearerToken);
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return HttpClient.newHttpClient().send(req.build(), HttpResponse.BodyHandlers.ofString());
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}
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}
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