refactor: standardize test parameterization and fix package naming (#556)

- Replace @ValueSource with @MethodSource for parameterized tests
- Add clientsForTesting() methods to provide test arguments consistently
- Remove hardcoded Spring-related labels from framework-agnostic mcp-test module
- Move mcp-test's utility classes from io.modelcontextprotocol.utils to io.modelcontextprotocol.util

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>

mcp-spring/mcp-spring-webflux/src/test/java/io/modelcontextprotocol/WebFluxSseIntegrationTests.java

@@ -6,10 +6,13 @@ package io.modelcontextprotocol;
 
 import java.time.Duration;
 import java.util.Map;
+import java.util.stream.Stream;
 
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Timeout;
+import org.junit.jupiter.params.provider.Arguments;
+
 import org.springframework.http.server.reactive.HttpHandler;
 import org.springframework.http.server.reactive.ReactorHttpHandlerAdapter;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -45,6 +48,10 @@ class WebFluxSseIntegrationTests extends AbstractMcpClientServerIntegrationTests
 	static McpTransportContextExtractor<ServerRequest> TEST_CONTEXT_EXTRACTOR = (r) -> McpTransportContext
 		.create(Map.of("important", "value"));
 
+	static Stream<Arguments> clientsForTesting() {
+		return Stream.of(Arguments.of("httpclient"), Arguments.of("webflux"));
+	}
+
 	@Override
 	protected void prepareClients(int port, String mcpEndpoint) {
 

mcp-spring/mcp-spring-webflux/src/test/java/io/modelcontextprotocol/WebFluxStatelessIntegrationTests.java

@@ -5,10 +5,13 @@
 package io.modelcontextprotocol;
 
 import java.time.Duration;
+import java.util.stream.Stream;
 
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Timeout;
+import org.junit.jupiter.params.provider.Arguments;
+
 import org.springframework.http.server.reactive.HttpHandler;
 import org.springframework.http.server.reactive.ReactorHttpHandlerAdapter;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -35,6 +38,10 @@ class WebFluxStatelessIntegrationTests extends AbstractStatelessIntegrationTests
 
 	private WebFluxStatelessServerTransport mcpStreamableServerTransport;
 
+	static Stream<Arguments> clientsForTesting() {
+		return Stream.of(Arguments.of("httpclient"), Arguments.of("webflux"));
+	}
+
 	@Override
 	protected void prepareClients(int port, String mcpEndpoint) {
 		clientBuilders

mcp-spring/mcp-spring-webflux/src/test/java/io/modelcontextprotocol/WebFluxStreamableIntegrationTests.java

@@ -6,10 +6,13 @@ package io.modelcontextprotocol;
 
 import java.time.Duration;
 import java.util.Map;
+import java.util.stream.Stream;
 
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Timeout;
+import org.junit.jupiter.params.provider.Arguments;
+
 import org.springframework.http.server.reactive.HttpHandler;
 import org.springframework.http.server.reactive.ReactorHttpHandlerAdapter;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -43,6 +46,10 @@ class WebFluxStreamableIntegrationTests extends AbstractMcpClientServerIntegrati
 	static McpTransportContextExtractor<ServerRequest> TEST_CONTEXT_EXTRACTOR = (r) -> McpTransportContext
 		.create(Map.of("important", "value"));
 
+	static Stream<Arguments> clientsForTesting() {
+		return Stream.of(Arguments.of("httpclient"), Arguments.of("webflux"));
+	}
+
 	@Override
 	protected void prepareClients(int port, String mcpEndpoint) {
 

mcp-spring/mcp-spring-webflux/src/test/java/io/modelcontextprotocol/client/transport/WebFluxSseClientTransportTests.java

@@ -31,7 +31,7 @@ import reactor.test.StepVerifier;
 import org.springframework.http.codec.ServerSentEvent;
 import org.springframework.web.reactive.function.client.WebClient;
 
-import static io.modelcontextprotocol.utils.McpJsonMapperUtils.JSON_MAPPER;
+import static io.modelcontextprotocol.util.McpJsonMapperUtils.JSON_MAPPER;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatCode;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;