Add docs and tests for aliases (#587)

Add docs and tests for aliases with `value_type`.

utoipa-gen/src/lib.rs

@@ -125,7 +125,7 @@ use self::{
 ///   This is useful in cases where the default type does not correspond to the actual type e.g. when
 ///   any third-party types are used which are not [`ToSchema`][to_schema]s nor [`primitive` types][primitive].
 ///   The value can be any Rust type what normally could be used to serialize to JSON or either virtual type _`Object`_
-///   or _`Value`.
+///   or _`Value`_, or an alias defined using `#[aliases(..)]`.
 ///   _`Object`_ will be rendered as generic OpenAPI object _(`type: object`)_.
 ///   _`Value`_ will be rendered as any OpenAPI value (i.e. no `type` restriction).
 /// * `title = ...` Literal string value. Can be used to define title for struct in OpenAPI
@@ -149,7 +149,7 @@ use self::{
 ///   This is useful in cases where the default type does not correspond to the actual type e.g. when
 ///   any third-party types are used which are not [`ToSchema`][to_schema]s nor [`primitive` types][primitive].
 ///   The value can be any Rust type what normally could be used to serialize to JSON, or either virtual type _`Object`_
-///   or _`Value`.
+///   or _`Value`_, or an alias defined using `#[aliases(..)]`.
 ///   _`Object`_ will be rendered as generic OpenAPI object _(`type: object`)_.
 ///   _`Value`_ will be rendered as any OpenAPI value (i.e. no `type` restriction).
 /// * `inline` If the type of this field implements [`ToSchema`][to_schema], then the schema definition
@@ -1650,7 +1650,7 @@ pub fn openapi(input: TokenStream) -> TokenStream {
 ///   This is useful in cases where the default type does not correspond to the actual type e.g. when
 ///   any third-party types are used which are not [`ToSchema`][to_schema]s nor [`primitive` types][primitive].
 ///   The value can be any Rust type what normally could be used to serialize to JSON, or either virtual type _`Object`_
-///   or _`Value`.
+///   or _`Value`_, or an alias defined using `#[aliases(..)]`.
 ///   _`Object`_ will be rendered as generic OpenAPI object _(`type: object`)_.
 ///   _`Value`_ will be rendered as any OpenAPI value (i.e. no `type` restriction).
 ///

utoipa-gen/tests/path_derive_auto_types_actix.rs

@@ -9,7 +9,7 @@ use actix_web::{get, HttpResponse, Responder, ResponseError};
 use assert_json_diff::assert_json_eq;
 
 #[test]
-fn path_operation_auto_types_ressponses() {
+fn path_operation_auto_types_responses() {
     /// Test item to to return
     #[derive(serde::Serialize, serde::Deserialize, utoipa::ToSchema)]
     struct Item<'s> {

utoipa-gen/tests/schema_derive_test.rs

@@ -3178,7 +3178,7 @@ fn derive_complex_enum_as() {
 #[test]
 fn derive_component_with_primitive_aliases() {
     #[derive(Debug, OpenApi)]
-    #[openapi(components(schemas(BarString, BarInt)))]
+    #[openapi(components(schemas(BarString, BarInt, Foo)))]
     struct ApiDoc;
 
     #[derive(ToSchema)]
@@ -3187,6 +3187,12 @@ fn derive_component_with_primitive_aliases() {
         #[allow(dead_code)]
         bar: R,
     }
+    #[derive(ToSchema)]
+    struct Foo {
+        #[allow(dead_code)]
+        #[schema(value_type=BarString)]
+        baz: Bar<String>,
+    }
 
     let doc = ApiDoc::openapi();
     let doc_value = &serde_json::to_value(doc).unwrap();
@@ -3214,9 +3220,18 @@ fn derive_component_with_primitive_aliases() {
                },
                 "type": "object",
                 "required": ["bar"]
+            },
+            "Foo": {
+                "properties": {
+                    "baz": {
+                        "$ref": "#/components/schemas/BarString",
+                    }
+               },
+                "type": "object",
+                "required": ["baz"]
             }
         })
-    )
+    );
 }
 
 #[test]