test link refs (#525)

openapi3/loader_test.go

@@ -438,6 +438,20 @@ paths:
 	require.Equal(t, "link to to the father", link.Description)
 }
 
+func TestLinksFromOAISpec(t *testing.T) {
+	loader := NewLoader()
+	doc, err := loader.LoadFromFile("testdata/link-example.yaml")
+	require.NoError(t, err)
+	err = doc.Validate(loader.Context)
+	require.NoError(t, err)
+	response := doc.Paths[`/2.0/repositories/{username}/{slug}`].Get.Responses.Get(200).Value
+	link := response.Links[`repositoryPullRequests`].Value
+	require.Equal(t, map[string]interface{}{
+		"username": "$response.body#/owner/username",
+		"slug":     "$response.body#/slug",
+	}, link.Parameters)
+}
+
 func TestResolveNonComponentsRef(t *testing.T) {
 	spec := []byte(`
 openapi: 3.0.0

openapi3/testdata/link-example.yaml

@@ -0,0 +1,203 @@
+openapi: 3.0.0
+info: 
+  title: Link Example
+  version: 1.0.0
+paths: 
+  /2.0/users/{username}: 
+    get: 
+      operationId: getUserByName
+      parameters: 
+      - name: username
+        in: path
+        required: true
+        schema:
+          type: string
+      responses: 
+        '200':
+          description: The User
+          content:
+            application/json:
+              schema: 
+                $ref: '#/components/schemas/user'
+          links:
+            userRepositories:
+              $ref: '#/components/links/UserRepositories'
+  /2.0/repositories/{username}:
+    get:
+      operationId: getRepositoriesByOwner
+      parameters:
+        - name: username
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: repositories owned by the supplied user
+          content: 
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/repository'
+          links:
+            userRepository:
+              $ref: '#/components/links/UserRepository'
+  /2.0/repositories/{username}/{slug}: 
+    get: 
+      operationId: getRepository
+      parameters: 
+        - name: username
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: slug
+          in: path
+          required: true
+          schema:
+            type: string
+      responses: 
+        '200':
+          description: The repository
+          content:
+              application/json: 
+                schema: 
+                  $ref: '#/components/schemas/repository'
+          links:
+            repositoryPullRequests:
+              $ref: '#/components/links/RepositoryPullRequests'
+  /2.0/repositories/{username}/{slug}/pullrequests: 
+    get: 
+      operationId: getPullRequestsByRepository
+      parameters: 
+      - name: username
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: slug
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: state
+        in: query
+        schema:
+          type: string
+          enum: 
+            - open
+            - merged
+            - declined
+      responses: 
+        '200':
+          description: an array of pull request objects
+          content:
+            application/json: 
+              schema: 
+                type: array
+                items: 
+                  $ref: '#/components/schemas/pullrequest'
+  /2.0/repositories/{username}/{slug}/pullrequests/{pid}: 
+    get: 
+      operationId: getPullRequestsById
+      parameters: 
+      - name: username
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: slug
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: pid
+        in: path
+        required: true
+        schema:
+          type: string
+      responses: 
+        '200':
+          description: a pull request object
+          content:
+            application/json: 
+              schema: 
+                $ref: '#/components/schemas/pullrequest'
+          links:
+            pullRequestMerge:
+              $ref: '#/components/links/PullRequestMerge'
+  /2.0/repositories/{username}/{slug}/pullrequests/{pid}/merge: 
+    post: 
+      operationId: mergePullRequest
+      parameters: 
+      - name: username
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: slug
+        in: path
+        required: true
+        schema:
+          type: string
+      - name: pid
+        in: path
+        required: true
+        schema:
+          type: string
+      responses: 
+        '204':
+          description: the PR was successfully merged
+components:
+  links:
+    UserRepositories:
+      # returns array of '#/components/schemas/repository'
+      operationId: getRepositoriesByOwner
+      parameters:
+        username: $response.body#/username
+    UserRepository:
+      # returns '#/components/schemas/repository'
+      operationId: getRepository
+      parameters:
+        username: $response.body#/owner/username
+        slug: $response.body#/slug
+    RepositoryPullRequests:
+      # returns '#/components/schemas/pullrequest'
+      operationId: getPullRequestsByRepository
+      parameters: 
+          username: $response.body#/owner/username
+          slug: $response.body#/slug
+    PullRequestMerge:
+      # executes /2.0/repositories/{username}/{slug}/pullrequests/{pid}/merge
+      operationId: mergePullRequest
+      parameters:
+        username: $response.body#/author/username
+        slug: $response.body#/repository/slug
+        pid: $response.body#/id
+  schemas: 
+    user: 
+      type: object
+      properties: 
+        username: 
+          type: string
+        uuid: 
+          type: string
+    repository: 
+      type: object
+      properties: 
+        slug: 
+          type: string
+        owner: 
+          $ref: '#/components/schemas/user'
+    pullrequest: 
+      type: object
+      properties: 
+        id: 
+          type: integer
+        title: 
+          type: string
+        repository: 
+          $ref: '#/components/schemas/repository'
+        author: 
+          $ref: '#/components/schemas/user'