add npx installation, adjust stdio unittests that use npx to work; add Jenkinsfile for builds

Author: stantonk

Jenkinsfile

@@ -0,0 +1,8 @@
+sproutMultiModuleBuild {
+  moduleToBuild = 'mcp-parent'
+  nodeLabel = 'ephemeral'
+  tribes = ['global']
+  notifySlackGroupsOnFailure = ['@kevin']
+  jdk = 17
+  deployRCBranches = true
+}

mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpAsyncClientTests.java

@@ -23,15 +23,21 @@ class StdioMcpAsyncClientTests extends AbstractMcpAsyncClientTests {
 	@Override
 	protected McpClientTransport createMcpTransport() {
 		ServerParameters stdioParams;
-		if (System.getProperty("os.name").toLowerCase().contains("win")) {
-			stdioParams = ServerParameters.builder("cmd.exe")
-				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "stdio")
-				.build();
-		}
+        String currentPath = System.getenv("PATH");
+        String nodePath = System.getProperty("user.dir") + "/node";
+        String newPath = nodePath + (currentPath != null ? System.getProperty("path.separator") + currentPath : "");
+
+        if (System.getProperty("os.name").toLowerCase().contains("win")) {
+            stdioParams = ServerParameters.builder("./node/npx.cmd")
+                .args("-y", "@modelcontextprotocol/server-everything", "stdio")
+                .addEnvVar("PATH", newPath)
+                .build();
+        }
 		else {
-			stdioParams = ServerParameters.builder("npx")
-				.args("-y", "@modelcontextprotocol/server-everything", "stdio")
-				.build();
+            stdioParams = ServerParameters.builder("./node/npx")
+                .args("-y", "@modelcontextprotocol/server-everything", "stdio")
+                .addEnvVar("PATH", newPath)
+                .build();
 		}
 		return new StdioClientTransport(stdioParams);
 	}

mcp/src/test/java/io/modelcontextprotocol/client/StdioMcpSyncClientTests.java

@@ -31,15 +31,21 @@ class StdioMcpSyncClientTests extends AbstractMcpSyncClientTests {
 	@Override
 	protected McpClientTransport createMcpTransport() {
 		ServerParameters stdioParams;
-		if (System.getProperty("os.name").toLowerCase().contains("win")) {
-			stdioParams = ServerParameters.builder("cmd.exe")
-				.args("/c", "npx.cmd", "-y", "@modelcontextprotocol/server-everything", "stdio")
+        String currentPath = System.getenv("PATH");
+        String nodePath = System.getProperty("user.dir") + "/node";
+        String newPath = nodePath + (currentPath != null ? System.getProperty("path.separator") + currentPath : "");
+
+        if (System.getProperty("os.name").toLowerCase().contains("win")) {
+            stdioParams = ServerParameters.builder("./node/npx.cmd")
+                .args("-y", "@modelcontextprotocol/server-everything", "stdio")
+                .addEnvVar("PATH", newPath)
 				.build();
 		}
 		else {
-			stdioParams = ServerParameters.builder("npx")
-				.args("-y", "@modelcontextprotocol/server-everything", "stdio")
-				.build();
+            stdioParams = ServerParameters.builder("./node/npx")
+                .args("-y", "@modelcontextprotocol/server-everything", "stdio")
+                .addEnvVar("PATH", newPath)
+                .build();
 		}
 		return new StdioClientTransport(stdioParams);
 	}

pom.xml

@@ -97,6 +97,7 @@
 		<bnd-maven-plugin.version>7.1.0</bnd-maven-plugin.version>
 		<json-unit-assertj.version>4.1.0</json-unit-assertj.version>
 		<json-schema-validator.version>1.5.7</json-schema-validator.version>
+        <frontend-maven-plugin.version>1.15.1</frontend-maven-plugin.version>
 
 	</properties>
 
@@ -259,7 +260,26 @@
 				<artifactId>maven-deploy-plugin</artifactId>
 				<version>${maven-deploy-plugin.version}</version>
 			</plugin>
-		</plugins>
+            <plugin>
+                <groupId>com.github.eirslett</groupId>
+                <artifactId>frontend-maven-plugin</artifactId>
+                <version>${frontend-maven-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>install node and npm</id>
+                        <goals>
+                            <goal>install-node-and-npm</goal>
+                        </goals>
+                        <phase>generate-test-resources</phase>
+                        <configuration>
+                            <nodeVersion>v18.19.0</nodeVersion>
+                            <npmVersion>10.2.4</npmVersion>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+        </plugins>
 	</build>
 
 	<profiles>