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crates/owlen-core/tests/file_server.rs

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+use owlen_core::mcp::client::McpClient;
+use owlen_core::mcp::remote_client::RemoteMcpClient;
+use owlen_core::mcp::McpToolCall;
+use std::fs::File;
+use std::io::Write;
+use tempfile::tempdir;
+
+#[tokio::test]
+async fn remote_file_server_read_and_list() {
+    // Create temporary directory with a file
+    let dir = tempdir().expect("tempdir failed");
+    let file_path = dir.path().join("hello.txt");
+    let mut file = File::create(&file_path).expect("create file");
+    writeln!(file, "world").expect("write file");
+
+    // Change current directory for the test process so the server sees the temp dir as its root
+    std::env::set_current_dir(dir.path()).expect("set cwd");
+
+    // Ensure the MCP server binary is built.
+    // Build the MCP server binary using the workspace manifest.
+    let manifest_path = std::path::Path::new(env!("CARGO_MANIFEST_DIR"))
+        .join("../..")
+        .join("Cargo.toml");
+    let build_status = std::process::Command::new("cargo")
+        .args(&["build", "-p", "owlen-mcp-server", "--manifest-path"])
+        .arg(manifest_path)
+        .status()
+        .expect("failed to run cargo build for MCP server");
+    assert!(build_status.success(), "MCP server build failed");
+
+    // Spawn remote client after the cwd is set and binary built
+    let client = RemoteMcpClient::new().expect("remote client init");
+
+    // Read file via MCP
+    let call = McpToolCall {
+        name: "resources/get".to_string(),
+        arguments: serde_json::json!({"path": "hello.txt"}),
+    };
+    let resp = client.call_tool(call).await.expect("call_tool");
+    let content: String = serde_json::from_value(resp.output).expect("parse output");
+    assert!(content.trim().ends_with("world"));
+
+    // List directory via MCP
+    let list_call = McpToolCall {
+        name: "resources/list".to_string(),
+        arguments: serde_json::json!({"path": "."}),
+    };
+    let list_resp = client.call_tool(list_call).await.expect("list_tool");
+    let entries: Vec<String> = serde_json::from_value(list_resp.output).expect("parse list");
+    assert!(entries.contains(&"hello.txt".to_string()));
+
+    // Cleanup handled by tempdir
+}