Commit graph go-sdk/mcp/testdata
Author SHA1 Message Date
Jonathan Amsterdam
2b9c6bff50 internal/mcp: handle synthetic responses in conformance test
Modify the conformance test driver to support outgoing responses.
They are returned for incoming requests in order.

Add a test that returns a file resource, which involves the server
sending a roots/list request to the client.

Change-Id: Ie7eb69a8c99ccbf11721518cfffb21244c03e532
Reviewed-on: https://go-review.googlesource.com/c/tools/+/677475
Commit-Queue: Jonathan Amsterdam <jba@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2025-05-30 08:16:23 -07:00
Jonathan Amsterdam
a627a4a2dd internal/mcp: add resource conformance test
This uncovered a problem in how we represent resource results:
contents is a slice, not a single value.

I tried to use a file resource, but the server->client ListRoots
call didn't work because synthetic responses aren't supported.
Left a TODO.

I enhanced the hello example so I that could use the MCP Inspector to
work with resources.

The falseSchema change fixes a potential bug where schemas are
re-used, which is disallowed.

Change-Id: I1f0198043cb6221c2a03f4f83aa0bafbc71167f4
Reviewed-on: https://go-review.googlesource.com/c/tools/+/677136
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Jonathan Amsterdam <jba@google.com>
2025-05-29 11:59:43 -07:00
Rob Findley
e2bbd8002d internal/mcp: add JSON conformance tests, and fix some bugs
Add the beginnings of some testdata-driven conformance tests that check
JSON-level compatibility of SDK messages, and fix some bugs in our JSON
message handling:

- "params" can be missing
- "_meta" should not be null
- lists of tools/prompts/resources should not be null

In order to implement this, we need to be able to know when the server
is done processing messages. In general, this is a hard problem; for
gopls we do this with a complicated system of progress reporting and
accounting. However, the new synctest package makes this trivial, as we
can call synctest.Wait to detect when the server is idle. Therefore,
this test requires 1.25 (it uses synctest.Test, added in 1.25, and so
can't run at 1.24 with GOEXPERIMENT=synctest).

Change-Id: I97fa28b56868340ece266a58e1eb3c3bf8cfe0e9
Reviewed-on: https://go-review.googlesource.com/c/tools/+/676538
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Auto-Submit: Robert Findley <rfindley@google.com>
2025-05-28 10:00:05 -07:00
Jonathan Amsterdam
8361df724d internal/mcp: add the FileResourceHandler method
Provide secure reading of files on the local filesystem.

There are subtleties in path manipulation on Windows that I don't fully
understand, so I defer that work for now.

Change-Id: Ic11f4617dde4ac0b31ccd5b0a772bb2f56db026f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/673196
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-05-19 11:15:23 -07:00