feat(hasClass): allow hasClass to compare multiple classes (#123)

* Support multiple classes in `hasClass`

* Remove unneccessary temp varible and fix linting

* Use every instead of reduce and map

* Revert package.json changes

* Add test for wrapper.element = undefined

* Update to include test for wrapper.element is null

* Restore original package.json and package-lock.json

* Remove commented out line

* Update package.json

Author: lmiller1990

src/wrappers/wrapper.js

@@ -109,7 +109,11 @@ export default class Wrapper implements BaseWrapper {
       targetClass = this.vm.$style[targetClass]
     }
 
-    return !!(this.element && this.element.classList.contains(targetClass))
+    const containsAllClasses = targetClass
+      .split(' ')
+      .every(target => this.element.classList.contains(target))
+
+    return !!(this.element && containsAllClasses)
   }
 
   /**

test/unit/specs/mount/Wrapper/hasClass.spec.js

@@ -21,13 +21,6 @@ describe('hasClass', () => {
     expect(wrapper.hasClass('class-name')).to.equal(false)
   })
 
-  it('returns false if wrapper does not have an element', () => {
-    const compiled = compileToFunctions('<div />')
-    const wrapper = mount(compiled)
-    wrapper.element = null
-    expect(wrapper.hasClass('not-class-name')).to.equal(false)
-  })
-
   it('throws an error if selector is not a string', () => {
     const compiled = compileToFunctions('<div />')
     const wrapper = mount(compiled)
@@ -46,4 +39,17 @@ describe('hasClass', () => {
 
     expect(wrapper.hasClass('color-red')).to.equal(true)
   })
+
+  it('returns false if wrapper does not contain element', () => {
+    const wrapper = mount({ render: (h) => h('div.a-class.b-class') })
+    const div = wrapper.find('div')
+    div.element = null
+    expect(wrapper.hasClass('a-class b-class')).to.equal(false)
+  })
+
+  it('returns true when the element contains multiple classes', () => {
+    const compiled = compileToFunctions('<div class="a-class b-class" />')
+    const wrapper = mount(compiled)
+    expect(wrapper.hasClass('a-class b-class')).to.equal(true)
+  })
 })