feat: workflow.getFile (#42)

docs/workflow.md

@@ -1,6 +1,7 @@
 # Workflow
 
 - [getRequests](#getrequests)
+- [getFile](#getfile)
 
 ## Overview
 
@@ -47,3 +48,21 @@ See the example response in the `Reference`.
 #### Reference
 
 - https://developer.cybozu.io/hc/ja/articles/360031071011#step1
+
+### getFile
+
+Get a file attached to a request.
+
+#### Parameters
+
+| Name |       Type       | Required | Description  |
+| ---- | :--------------: | :------: | ------------ |
+| id   | Number or String |   Yes    | The file ID. |
+
+#### Returns
+
+See the example response in the `Reference`.
+
+#### Reference
+
+- https://developer.cybozu.io/hc/ja/articles/360031071011#step2

src/client/WorkflowClient.ts

@@ -100,4 +100,18 @@ export class WorkflowClient {
     }
     return this.client.get(path, data);
   }
+
+  public getFile(params: {
+    id: string | number;
+  }): Promise<{
+    id: string;
+    contentType: string;
+    name: string;
+    size: string;
+    content: string;
+  }> {
+    const { id } = params;
+    const path = buildPath({ endpointName: `workflow/admin/files/${id}` });
+    return this.client.get(path, {});
+  }
 }

src/client/__tests__/WorkflowClient.test.ts

@@ -59,4 +59,21 @@ describe("WorkflowClient", () => {
       });
     });
   });
+
+  describe("getFile", () => {
+    beforeEach(async () => {
+      await workflowClient.getFile({ id: 1 });
+    });
+    it("should pass the path to the http client", () => {
+      expect(mockClient.getLogs()[0].path).toBe(
+        "/api/v1/workflow/admin/files/1"
+      );
+    });
+    it("should send a get request", () => {
+      expect(mockClient.getLogs()[0].method).toBe("get");
+    });
+    it("should pass an empty object as a param to the http client", () => {
+      expect(mockClient.getLogs()[0].params).toEqual({});
+    });
+  });
 });