Adds test for mounting multiple apps as one

Fixes routing to get specs working

Author: myxoh

.rubocop_todo.yml

@@ -50,7 +50,6 @@ Metrics/CyclomaticComplexity:
 # URISchemes: http, https
 Metrics/LineLength:
   Max: 215
-
 # Offense count: 57
 # Configuration parameters: CountComments.
 Metrics/MethodLength:
@@ -60,6 +59,8 @@ Metrics/MethodLength:
 # Configuration parameters: CountComments.
 Metrics/ModuleLength:
   Max: 212
+  Exclude:
+    - 'spec/grape/dsl/routing_spec.rb'
 
 # Offense count: 21
 Metrics/PerceivedComplexity:

lib/grape/dsl/routing.rb

@@ -81,7 +81,8 @@ def mount(mounts, opts = {})
           mounts = { mounts => '/' } unless mounts.respond_to?(:each_pair)
           mounts.each_pair do |app, path|
             if app.respond_to?(:mount_instance)
-              return mount(app.mount_instance(configuration: opts[:with] || {}) => path)
+              mount(app.mount_instance(configuration: opts[:with] || {}) => path)
+              next
             end
             in_setting = inheritable_setting
 

spec/grape/dsl/routing_spec.rb

@@ -70,6 +70,16 @@ class Dummy
 
           expect(app2.inheritable_setting.to_hash[:namespace_stackable]).to eq(mount_path: ['/app1', '/app2'])
         end
+
+        it 'mounts multiple routes at once' do
+          base_app = Class.new(Grape::API)
+          app1     = Class.new(Grape::API)
+          app2     = Class.new(Grape::API)
+          base_app.mount(app1 => '/app1', app2 => '/app2')
+
+          expect(app1.inheritable_setting.to_hash[:namespace_stackable]).to eq(mount_path: ['/app1'])
+          expect(app2.inheritable_setting.to_hash[:namespace_stackable]).to eq(mount_path: ['/app2'])
+        end
       end
 
       describe '.route' do