fix: render all children (#931)

Author: eddyerburgh

packages/shared/stub-components.js

@@ -124,7 +124,7 @@ export function createBlankStub (
             ...this.$props
           }
         },
-        context ? context.children : this.$slots.default
+        context ? context.children : this.$options._renderChildren
       )
     }
   }

test/specs/shallow-mount.spec.js

@@ -77,6 +77,25 @@ describeRunIf(process.env.TEST_ENV !== 'node', 'shallowMount', () => {
     expect(wrapper.html()).to.equal('<child-stub>Hello</child-stub>')
   })
 
+  it('renders named slots', () => {
+    const localVue = createLocalVue()
+    localVue.component('child', {
+      template: '<div />'
+    })
+    const TestComponent = {
+      template: `
+        <child>
+          <p slot="header">Hello</p>
+          <p slot="footer">World</p>
+      </child>
+      `
+    }
+    const wrapper = shallowMount(TestComponent, {
+      localVue
+    })
+    expect(wrapper.html()).to.equal('<child-stub><p>Hello</p> <p>World</p></child-stub>')
+  })
+
   it('renders no children if none supplied', () => {
     const TestComponent = {
       template: '<child />',