test: cover get_prompt context=None fallback; revert no branch pragma

- pragma: no branch only exempts branch coverage, not line coverage.
  The return on line 97 is never executed, so no cover is correct.
- get_prompt fallback at server.py:1089 was never hit since all tests
  use Client (E2E). Added a direct-call test.

Author: maxisbey

src/mcp/server/mcpserver/context.py

@@ -93,7 +93,7 @@ async def report_progress(self, progress: float, total: float | None = None, mes
         """
         progress_token = self.request_context.meta.get("progress_token") if self.request_context.meta else None
 
-        if progress_token is None:  # pragma: no branch
+        if progress_token is None:  # pragma: no cover
             return
 
         await self.request_context.session.send_progress_notification(

tests/server/mcpserver/test_server.py

@@ -1231,6 +1231,19 @@ def prompt_no_context(text: str) -> str:
 class TestServerPrompts:
     """Test prompt functionality in MCPServer server."""
 
+    async def test_get_prompt_direct_call_without_context(self):
+        """Test calling mcp.get_prompt() directly without passing context."""
+        mcp = MCPServer()
+
+        @mcp.prompt()
+        def fn() -> str:
+            return "Hello, world!"
+
+        result = await mcp.get_prompt("fn")
+        content = result.messages[0].content
+        assert isinstance(content, TextContent)
+        assert content.text == "Hello, world!"
+
     async def test_prompt_decorator(self):
         """Test that the prompt decorator registers prompts correctly."""
         mcp = MCPServer()