fixup! Allow Client#call_tool to accept a tool name

Author: koic

lib/mcp/client.rb

@@ -112,7 +112,7 @@ def prompts
     #   Consult the documentation for your transport (e.g., MCP::Client::HTTP) for details.
     def call_tool(name: nil, tool: nil, arguments: nil, progress_token: nil)
       tool_name = name || tool&.name
-      raise ArgumentError, "Either `name:` or `tool:` must be provided" unless tool_name
+      raise ArgumentError, "Either `name:` or `tool:` must be provided." unless tool_name
 
       params = { name: tool_name, arguments: arguments }
       if progress_token

test/mcp/client_test.rb

@@ -90,7 +90,7 @@ def test_call_tool_raises_when_no_name_or_tool
       client = Client.new(transport: mock)
 
       error = assert_raises(ArgumentError) { client.call_tool(arguments: { foo: "bar" }) }
-      assert_equal("Either `name:` or `tool:` must be provided", error.message)
+      assert_equal("Either `name:` or `tool:` must be provided.", error.message)
     end
 
     def test_resources_sends_request_to_transport_and_returns_resources_array