[bugfix] disabled property in checkbox (#425)

packages/checkbox/index.vue

@@ -89,9 +89,7 @@ export default create({
     },
 
     isDisabled() {
-      return this.isGroup && this.parentGroup
-          ? this.parentGroup.disabled
-          : this.disabled;
+      return (this.isGroup && this.parentGroup && this.parentGroup.disabled) || this.disabled;
     }
   },
 

test/unit/components/checkbox.vue

@@ -1,6 +1,6 @@
 <template>
   <van-checkbox-group v-model="result">
-    <van-checkbox v-for="(item, index) in list" :key="index" :name="item">复选框{{item}}</van-checkbox>
+    <van-checkbox v-for="(item, index) in list" :key="index" :name="item" :disabled="index === 2">复选框{{item}}</van-checkbox>
   </van-checkbox-group>
 </template>
 

test/unit/specs/checkbox.spec.js

@@ -66,6 +66,22 @@ describe('CheckboxGroup', () => {
       done();
     });
   });
+
+  it('click on disabled item', (done) => {
+    wrapper = mount(CheckboxTestComponent);
+
+    const eventStub = sinon.stub(wrapper.vNode.child, '$emit');
+
+    const disabledLabel = wrapper.find('.van-checkbox')[2].find('.van-checkbox__label')[0];
+    disabledLabel.trigger('click');
+
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledOnce).to.be.false;
+      expect(wrapper.vm.result.indexOf('c')).to.equal(-1);
+      done();
+    });
+  });
 });
 
 describe('Checkbox', () => {