diff --git a/test/operation_ids_filter/input.yaml b/test/operation_ids_filter/input.yaml
new file mode 100644
index 0000000..5a84f34
--- /dev/null
+++ b/test/operation_ids_filter/input.yaml
@@ -0,0 +1,107 @@
+swagger: '2.0'
+schemes:
+  - http
+host: xkcd.com
+basePath: /
+info:
+  description: 'Webcomic of romance, sarcasm, math, and language.'
+  title: XKCD
+  version: 1.0.0
+  x-apisguru-categories:
+    - media
+  x-logo:
+    url: 'http://imgs.xkcd.com/static/terrible_small_logo.png'
+    x-visibility: private
+  x-origin:
+    - format: swagger
+      url: >-
+        https://raw.githubusercontent.com/APIs-guru/unofficial_openapi_specs/master/xkcd.com/1.0.0/swagger.yaml
+      version: '2.0'
+  x-providerName: xkcd.com
+  x-tags:
+    - humor
+    - comics
+  x-unofficialSpec: true
+externalDocs:
+  url: 'https://xkcd.com/json.html'
+securityDefinitions: {}
+paths:
+  /info.0.json:
+    get:
+      operationId: get_current_comic
+      description: |
+        Fetch current comic and metadata.
+      parameters:
+        - $ref: '#/definitions/comic'
+        - $ref: '#/definitions/hovertext'
+      responses:
+        '200':
+          description: OK
+          schema:
+            $ref: '#/definitions/comic'
+  '/{comicId}/info.0.json':
+    get:
+      operationId: get_comics_by_id
+      description: |
+        Fetch comics and metadata by comic id.
+      responses:
+        '200':
+          description: OK
+          schema:
+            $ref: '#/definitions/comic'
+    post:
+      operationId: add_comic
+      description: |
+        add comic with title .
+      parameters:
+        - in: body
+          name: title
+          required: true
+          type: number
+        - $ref: '#/definitions/title'
+      responses:
+        '200':
+          description: OK
+          schema:
+            $ref: '#/definitions/comic'
+    parameters:
+      - in: path
+        name: comicId
+        required: true
+        type: number
+      - $ref: '#/definitions/hovertext'
+definitions:
+  comic:
+    properties:
+      alt:
+        type: string
+      day:
+        type: string
+      img:
+        type: string
+      link:
+        type: string
+      month:
+        type: string
+      news:
+        type: string
+      num:
+        type: number
+      safe_title:
+        type: string
+      title:
+        type: string
+      transcript:
+        type: string
+      year:
+        type: string
+    type: object
+  hovertext:
+    x-visibility: private
+    properties:
+      description:
+        type: string
+  title:
+    properties:
+      title:
+        type: string
diff --git a/test/operation_ids_filter/options.yaml b/test/operation_ids_filter/options.yaml
new file mode 100644
index 0000000..7ebd783
--- /dev/null
+++ b/test/operation_ids_filter/options.yaml
@@ -0,0 +1,7 @@
+inverse: true
+valid: true
+flags:
+    - operationId
+flagValues:
+    - get_comics_by_id
+    - get_current_comic
diff --git a/test/operation_ids_filter/output.yaml b/test/operation_ids_filter/output.yaml
new file mode 100644
index 0000000..c7e604a
--- /dev/null
+++ b/test/operation_ids_filter/output.yaml
@@ -0,0 +1,65 @@
+swagger: '2.0'
+info:
+  title: XKCD
+  version: 1.0.0
+paths:
+  /info.0.json:
+    get:
+      operationId: get_current_comic
+      description: |
+        Fetch current comic and metadata.
+      parameters:
+        - $ref: '#/definitions/comic'
+        - $ref: '#/definitions/hovertext'
+      responses:
+        '200':
+          description: OK
+          schema:
+            $ref: '#/definitions/comic'
+  '/{comicId}/info.0.json':
+    get:
+      operationId: get_comics_by_id
+      description: |
+        Fetch comics and metadata by comic id.
+      responses:
+        '200':
+          description: OK
+          schema:
+            $ref: '#/definitions/comic'
+    parameters:
+      - in: path
+        name: comicId
+        required: true
+        type: number
+      - $ref: '#/definitions/hovertext'
+definitions:
+  comic:
+    properties:
+      alt:
+        type: string
+      day:
+        type: string
+      img:
+        type: string
+      link:
+        type: string
+      month:
+        type: string
+      news:
+        type: string
+      num:
+        type: number
+      safe_title:
+        type: string
+      title:
+        type: string
+      transcript:
+        type: string
+      year:
+        type: string
+    type: object
+  hovertext:
+    x-visibility: private
+    properties:
+      description:
+        type: string