手机端样式细节调整，补充测试用例 (#3)

* unit test

* picker and dialog unit tes

* fix:quantity and loading

packages/checkbox/src/checkbox.vue

@@ -56,12 +56,14 @@ export default {
         if (this.isGroup && this.parentGroup) {
           const parentValue = this.parentGroup.value.slice();
           if (val) {
+            /* istanbul ignore else */
             if (parentValue.indexOf(this.name) === -1) {
               parentValue.push(this.name);
               this.parentGroup.$emit('input', parentValue);
             }
           } else {
             const index = parentValue.indexOf(this.name);
+            /* istanbul ignore else */
             if (index !== -1) {
               parentValue.splice(index, 1);
               this.parentGroup.$emit('input', parentValue);
@@ -77,8 +79,11 @@ export default {
      * `checkbox`是否被选中
      */
     isChecked() {
-      if ({}.toString.call(this.currentValue) === '[object Boolean]') {
-        return this.currentValue;
+      const currentValue = this.currentValue;
+      if ({}.toString.call(currentValue) === '[object Boolean]') {
+        return currentValue;
+      } else if (currentValue !== null && currentValue !== undefined) {
+        return currentValue === this.name;
       }
     },
 

packages/picker/src/picker.vue

@@ -13,7 +13,7 @@
         :values="item.values"
         :class-name="item.className"
         :itemHeight="itemHeight"
-        :visible-item-count="visibleItemCount"
+        :visible-item-count="visibileColumnCount"
         :value-key="valueKey"
         @columnChange="columnValueChange(index)">
       </picker-column>

packages/quantity/src/quantity.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="van-quantity">
+  <div class="van-quantity" :class="{ 'van-quantity--disabled': disabled }">
     <button
       @click="handleChange('minus')"
       class="van-quantity__stepper van-quantity__minus"

packages/vant-css/src/quantity.css

@@ -4,6 +4,14 @@
   @b quantity {
     font-size: 0;
 
+    @m disabled {
+      .van-quantity__input,
+      .van-quantity__minus,
+      .van-quantity__plus {
+        border-color: #e8e8e8;
+      }
+    }
+
     @e stepper {
       width: 40px;
       height: 30px;