fix(server): fix POST request forward to routes defined in after option

Fix a bug introduced in cee700d where the serveIndex feature where always replying instead of forwarding requests to the next middleware.

lib/Server.js

@@ -390,13 +390,27 @@ class Server {
 
     if (Array.isArray(contentBase)) {
       contentBase.forEach((item) => {
-        this.app.use(contentBasePublicPath, serveIndex(item));
+        this.app.use(contentBasePublicPath, (req, res, next) => {
+          // serve-index doesn't fallthrough non-get/head request to next middleware
+          if (req.method !== 'GET' && req.method !== 'HEAD') {
+            return next();
+          }
+
+          serveIndex(item)(req, res, next);
+        });
       });
     } else if (
       typeof contentBase !== 'number' &&
       !isAbsoluteUrl(String(contentBase))
     ) {
-      this.app.use(contentBasePublicPath, serveIndex(contentBase));
+      this.app.use(contentBasePublicPath, (req, res, next) => {
+        // serve-index doesn't fallthrough non-get/head request to next middleware
+        if (req.method !== 'GET' && req.method !== 'HEAD') {
+          return next();
+        }
+
+        serveIndex(contentBase)(req, res, next);
+      });
     }
   }
 

test/server/after-option.test.js

@@ -29,6 +29,10 @@ describe('after option', () => {
           appArg.get('/after/some/path', (_, response) => {
             response.send('after');
           });
+
+          appArg.post('/after/some/path', (_, response) => {
+            response.send('after POST');
+          });
         },
         port,
       },
@@ -48,4 +52,14 @@ describe('after option', () => {
         expect(response.text).toBe('after');
       });
   });
+
+  it('should handle POST requests to after route', () => {
+    return req
+      .post('/after/some/path')
+      .expect('Content-Type', 'text/html; charset=utf-8')
+      .expect(200)
+      .then((response) => {
+        expect(response.text).toBe('after POST');
+      });
+  });
 });

test/server/contentBasePublicPath-option.test.js

@@ -277,19 +277,19 @@ describe('contentBasePublicPath option', () => {
     });
 
     it('POST request', (done) => {
-      req.post(`${contentBasePublicPath}/`).expect(405, done);
+      req.post(`${contentBasePublicPath}/`).expect(404, done);
     });
 
     it('PUT request', (done) => {
-      req.put(`${contentBasePublicPath}/`).expect(405, done);
+      req.put(`${contentBasePublicPath}/`).expect(404, done);
     });
 
     it('DELETE request', (done) => {
-      req.delete(`${contentBasePublicPath}/`).expect(405, done);
+      req.delete(`${contentBasePublicPath}/`).expect(404, done);
     });
 
     it('PATCH request', (done) => {
-      req.patch(`${contentBasePublicPath}/`).expect(405, done);
+      req.patch(`${contentBasePublicPath}/`).expect(404, done);
     });
   });
 });