feat: use method enum instead of string in @rest (#1379)

examples/operations/routes.graphql

@@ -1,4 +1,4 @@
-query posts @rest(method: "get", path: "/posts") {
+query posts @rest(method: GET, path: "/posts") {
   posts {
     id
     title
@@ -10,7 +10,7 @@ query posts @rest(method: "get", path: "/posts") {
   }
 }
 
-query users @rest(method: "get", path: "/users") {
+query users @rest(method: GET, path: "/users") {
   users {
     id
     name

src/rest/directive.rs

@@ -33,7 +33,8 @@ impl TryFrom<&Directive> for Rest {
                 rest.path = serde_json::from_str(v.node.to_string().as_str())?;
             }
             if k.node.as_str() == "method" {
-                rest.method = serde_json::from_str(v.node.to_string().to_uppercase().as_str())?;
+                let value = serde_json::Value::String(v.node.to_string().to_uppercase());
+                rest.method = serde_json::from_value(value)?;
             }
             if k.node.as_str() == "query" {
                 if let Value::Object(map) = &v.node {

src/rest/endpoint.rs

@@ -128,20 +128,20 @@ mod tests {
 
     const TEST_QUERY: &str = r#"
         query ($a: Int, $b: String, $c: Boolean, $d: Float, $v: String)
-          @rest(method: "post", path: "/foo/$a", query: {b: $b, c: $c, d: $d}, body: $v) {
+          @rest(method: POST, path: "/foo/$a", query: {b: $b, c: $c, d: $d}, body: $v) {
             value
           }
         "#;
 
     const MULTIPLE_TEST_QUERY: &str = r#"        
         query q1 ($a: Int)
-          @rest(method: "post", path: "/foo/$a") {
+          @rest(method: POST, path: "/foo/$a") {
             value
           }
 
 
         query q2 ($a: Int)
-          @rest(method: "post", path: "/bar/$a") {
+          @rest(method: POST, path: "/bar/$a") {
             value
           }
         "#;

tests/execution/rest-api-post.md

@@ -0,0 +1,55 @@
+# Rest API
+
+#### file:operation-user.graphql
+
+```graphql
+query ($id: Int!) @rest(method: POST, path: "/user/$id") {
+  user(id: $id) {
+    id
+    name
+  }
+}
+```
+
+#### server:
+
+```graphql
+schema
+  @server
+  @upstream(baseURL: "http://jsonplaceholder.typicode.com")
+  @link(type: Operation, src: "operation-user.graphql") {
+  query: Query
+}
+
+type Query {
+  user(id: Int!): User @http(path: "/users/{{args.id}}")
+}
+
+type User {
+  id: Int!
+  name: String!
+}
+```
+
+#### mock:
+
+```yml
+- request:
+    method: GET
+    url: http://jsonplaceholder.typicode.com/users/1
+    headers:
+      test: test
+    body: null
+  response:
+    status: 200
+    body:
+      id: 1
+      name: foo
+```
+
+#### assert:
+
+```yml
+- method: POST
+  url: http://localhost:8080/api/user/1
+```

tests/execution/rest-api.md

@@ -3,7 +3,7 @@
 #### file:operation-user.graphql
 
 ```graphql
-query ($id: Int!) @rest(method: "get", path: "/user/$id") {
+query ($id: Int!) @rest(method: GET, path: "/user/$id") {
   user(id: $id) {
     id
     name

tests/snapshots/execution_spec__rest-api-post.md_assert_0.snap

@@ -0,0 +1,18 @@
+---
+source: tests/execution_spec.rs
+expression: response
+---
+{
+  "status": 200,
+  "headers": {
+    "content-type": "application/json"
+  },
+  "body": {
+    "data": {
+      "user": {
+        "id": 1,
+        "name": "foo"
+      }
+    }
+  }
+}

tests/snapshots/execution_spec__rest-api-post.md_client.snap

@@ -0,0 +1,16 @@
+---
+source: tests/execution_spec.rs
+expression: client
+---
+type Query {
+  user(id: Int!): User
+}
+
+type User {
+  id: Int!
+  name: String!
+}
+
+schema {
+  query: Query
+}

tests/snapshots/execution_spec__rest-api-post.md_merged.snap

@@ -0,0 +1,16 @@
+---
+source: tests/execution_spec.rs
+expression: merged
+---
+schema @server @upstream(baseURL: "http://jsonplaceholder.typicode.com") @link(src: "operation-user.graphql", type: Operation) {
+  query: Query
+}
+
+type Query {
+  user(id: Int!): User @http(path: "/users/{{args.id}}")
+}
+
+type User {
+  id: Int!
+  name: String!
+}