update test

Author: mazipan

test/VueStringFilter.spec.js

@@ -9,6 +9,51 @@ describe('test VueStringFilter', () => {
 
     localVue.use(VueStringFilter)
 
+    let wrapper = shallow(App, {
+      localVue
+    })
+  })
+  it('Test lowercase', () => {    
+    let localVue = createLocalVue()
+    
+    localVue.use(VueStringFilter)
+
+    let wrapper = shallow(App, {
+      localVue
+    })
+  })
+  it('Test uppercase', () => {    
+    let localVue = createLocalVue()
+    
+    localVue.use(VueStringFilter)
+
+    let wrapper = shallow(App, {
+      localVue
+    })
+  })
+  it('Test titlecase', () => {    
+    let localVue = createLocalVue()
+    
+    localVue.use(VueStringFilter)
+
+    let wrapper = shallow(App, {
+      localVue
+    })
+  })
+  it('Test capitalize', () => {    
+    let localVue = createLocalVue()
+    
+    localVue.use(VueStringFilter)
+
+    let wrapper = shallow(App, {
+      localVue
+    })
+  })
+  it('Test slug', () => {    
+    let localVue = createLocalVue()
+    
+    localVue.use(VueStringFilter)
+
     let wrapper = shallow(App, {
       localVue
     })