add a test for subfolder as well as filename

Signed-off-by: David Roberts <David.Roberts@orbis.com>

plugins/azure-devops-backend/src/service/router.test.ts

@@ -482,7 +482,7 @@ describe('createRouter', () => {
   });
 
   describe('GET /readme/:projectName/:repoName', () => {
-    it('fetches default readme file', async () => {
+    it('fetches default default readme file', async () => {
       const content = getReadmeMock();
       const url = `https://host.com/myOrg/myProject/_git/myRepo?path=README.md`;
 
@@ -507,7 +507,7 @@ describe('createRouter', () => {
     });
   });
 
-  describe('GET /readme/:projectName/:repoName with readme path', () => {
+  describe('GET /readme/:projectName/:repoName with readme filename', () => {
     it('fetches specified readme file', async () => {
       const content = getReadmeMock();
       const url = `https://host.com/myOrg/myProject/_git/myRepo?path=README_NOT_DEFAULT.md`;
@@ -534,6 +534,34 @@ describe('createRouter', () => {
       });
     });
   });
+
+  describe('GET /readme/:projectName/:repoName with readme path', () => {
+    it('fetches specified readme file from subfolder', async () => {
+      const content = getReadmeMock();
+      const url = `https://host.com/myOrg/myProject/_git/myRepo?path=/my-path/README.md`;
+
+      azureDevOpsApi.getReadme.mockResolvedValueOnce({
+        content,
+        url,
+      });
+
+      const response = await request(app).get(
+        '/readme/myProject/myRepo?path=/my-path/README.md',
+      );
+      expect(azureDevOpsApi.getReadme).toHaveBeenCalledWith(
+        'host.com',
+        'myOrg',
+        'myProject',
+        'myRepo',
+        '/my-path/README.md',
+      );
+      expect(response.status).toEqual(200);
+      expect(response.body).toEqual({
+        content,
+        url,
+      });
+    });
+  });
 });
 
 function getReadmeMock() {