test: add untagged ServerResult deserialization regression tests

Author: DaleSeo

crates/rmcp/src/handler/server/common.rs

@@ -138,7 +138,7 @@ where
     }
 }
 
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct Extension<T>(pub T);
 
 impl<C, T> FromContextPart<C> for Extension<T>
@@ -183,7 +183,7 @@ where
     }
 }
 
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct RequestId(pub crate::model::RequestId);
 
 impl<C> FromContextPart<C> for RequestId

crates/rmcp/src/handler/server/prompt.rs

@@ -153,7 +153,7 @@ where
 }
 
 // Prompt-specific extractor for prompt name
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct PromptName(pub String);
 
 impl<S> FromContextPart<PromptContext<'_, S>> for PromptName {

crates/rmcp/src/handler/server/router/prompt.rs

@@ -91,7 +91,7 @@ where
 }
 
 /// Adapter for functions generated by the #\[prompt\] macro
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct PromptAttrGenerateFunctionAdapter;
 
 impl<S, F> IntoPromptRoute<S, PromptAttrGenerateFunctionAdapter> for F

crates/rmcp/src/handler/server/router/tool.rs

@@ -217,7 +217,7 @@ where
     }
 }
 
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ToolAttrGenerateFunctionAdapter;
 impl<S, F> IntoToolRoute<S, ToolAttrGenerateFunctionAdapter> for F
 where

crates/rmcp/src/handler/server/tool.rs

@@ -165,7 +165,7 @@ pub type DynCallToolHandler<S> =
         -> futures::future::LocalBoxFuture<'s, Result<CallToolResult, crate::ErrorData>>;
 
 // Tool-specific extractor for tool name
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ToolName(pub Cow<'static, str>);
 
 impl<S> FromContextPart<ToolCallContext<'_, S>> for ToolName {

crates/rmcp/src/handler/server/wrapper/json.rs

@@ -14,7 +14,7 @@ use crate::{
 /// serialized as structured JSON content with an associated schema.
 /// The framework will place the JSON in the `structured_content` field
 /// of the tool result rather than the regular `content` field.
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct Json<T>(pub T);
 
 // Implement JsonSchema for Json<T> to delegate to T's schema

crates/rmcp/src/handler/server/wrapper/parameters.rs

@@ -42,7 +42,7 @@ use schemars::JsonSchema;
 /// - Returns appropriate error responses if deserialization fails
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 #[serde(transparent)]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct Parameters<P>(pub P);
 
 impl<P: JsonSchema> JsonSchema for Parameters<P> {

crates/rmcp/src/model.rs

@@ -39,7 +39,7 @@ impl Annotations {
 
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct Annotated<T: AnnotateAble> {
     #[serde(flatten)]
     pub raw: T,

crates/rmcp/src/model/annotated.rs

@@ -34,7 +34,7 @@ pub type ExtensionCapabilities = BTreeMap<String, JsonObject>;
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct PromptsCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub list_changed: Option<bool>,
@@ -43,7 +43,7 @@ pub struct PromptsCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ResourcesCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub subscribe: Option<bool>,
@@ -54,7 +54,7 @@ pub struct ResourcesCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ToolsCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub list_changed: Option<bool>,
@@ -63,7 +63,7 @@ pub struct ToolsCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct RootsCapabilities {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub list_changed: Option<bool>,
@@ -73,7 +73,7 @@ pub struct RootsCapabilities {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct TasksCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub requests: Option<TaskRequestsCapability>,
@@ -87,7 +87,7 @@ pub struct TasksCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct TaskRequestsCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub sampling: Option<SamplingTaskCapability>,
@@ -100,7 +100,7 @@ pub struct TaskRequestsCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct SamplingTaskCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub create_message: Option<JsonObject>,
@@ -109,7 +109,7 @@ pub struct SamplingTaskCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ElicitationTaskCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub create: Option<JsonObject>,
@@ -118,7 +118,7 @@ pub struct ElicitationTaskCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ToolsTaskCapability {
     #[serde(skip_serializing_if = "Option::is_none")]
     pub call: Option<JsonObject>,
@@ -199,7 +199,7 @@ impl TasksCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct FormElicitationCapability {
     /// Whether the client supports JSON Schema validation for elicitation responses.
     /// When true, the client will validate user input against the requested_schema
@@ -211,7 +211,7 @@ pub struct FormElicitationCapability {
 /// Capability for URL mode elicitation.
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct UrlElicitationCapability {}
 
 /// Elicitation allows servers to request interactive input from users during tool execution.
@@ -220,7 +220,7 @@ pub struct UrlElicitationCapability {}
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct ElicitationCapability {
     /// Whether client supports form-based elicitation.
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -234,7 +234,7 @@ pub struct ElicitationCapability {
 #[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Default)]
 #[serde(rename_all = "camelCase")]
 #[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
-#[allow(clippy::exhaustive_structs)]
+#[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
 pub struct SamplingCapability {
     /// Support for `tools` and `toolChoice` parameters
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -323,12 +323,12 @@ macro_rules! builder {
     ($Target: ident {$($f: ident: $T: ty),* $(,)?}) => {
         paste! {
             #[derive(Default, Clone, Copy, Debug)]
-            #[allow(clippy::exhaustive_structs)]
+            #[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
             pub struct [<$Target BuilderState>]<
                 $(const [<$f:upper>]: bool = false,)*
             >;
             #[derive(Debug, Default)]
-            #[allow(clippy::exhaustive_structs)]
+            #[expect(clippy::exhaustive_structs, reason = "intentionally exhaustive")]
             pub struct [<$Target Builder>]<S = [<$Target BuilderState>]> {
                 $(pub $f: Option<$T>,)*
                 pub state: PhantomData<S>