diff --git a/packages/utils/index.js b/packages/utils/index.js
index b9221ea6f..1c6488e66 100644
--- a/packages/utils/index.js
+++ b/packages/utils/index.js
@@ -19,9 +19,10 @@ export function get(object, path) {
 
 const camelizeRE = /-(\w)/g;
 export function camelize(str) {
-  return str.replace(camelizeRE, (_, c) => c ? c.toUpperCase() : '');
+  return str.replace(camelizeRE, (_, c) => c.toUpperCase());
 }
 
 export function isAndroid() {
+  /* istanbul ignore next */
   return isServer ? false : /android/.test(navigator.userAgent.toLowerCase());
 }
diff --git a/packages/utils/raf.js b/packages/utils/raf.js
index a67176870..b04403a1f 100644
--- a/packages/utils/raf.js
+++ b/packages/utils/raf.js
@@ -5,6 +5,8 @@
 import { isServer } from './index';
 
 let prev = Date.now();
+
+/* istanbul ignore next */
 function fallback(fn) {
   const curr = Date.now();
   const ms = Math.max(0, 16 - (curr - prev));
@@ -13,11 +15,16 @@ function fallback(fn) {
   return id;
 }
 
+/* istanbul ignore next */
 const global = isServer ? global : window;
+
+/* istanbul ignore next */
 const iRaf =
   global.requestAnimationFrame ||
   global.webkitRequestAnimationFrame ||
   fallback;
+
+/* istanbul ignore next */
 const iCancel =
   global.cancelAnimationFrame ||
   global.webkitCancelAnimationFrame ||
diff --git a/test/unit/specs/area.spec.js b/test/unit/specs/area.spec.js
index 369c4cf84..994be2be8 100644
--- a/test/unit/specs/area.spec.js
+++ b/test/unit/specs/area.spec.js
@@ -1,7 +1,6 @@
 import Area from 'packages/area';
 import { mount } from 'avoriaz';
 import AreaList from '../mock/area.json';
-import { setTimeout } from 'timers';
 
 describe('Area', () => {
   let wrapper;
@@ -27,8 +26,6 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
-
     const confirmBtn = wrapper.find('.van-picker__confirm')[0];
     const eventStub = sinon.stub(wrapper.vm, '$emit');
 
@@ -49,7 +46,6 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
     expect(wrapper.vm.$refs.picker.getColumnValue(2).code).to.equal('110101');
 
     wrapper.setProps({
@@ -68,9 +64,7 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
     expect(wrapper.vm.areaColumns.length).to.equal(0);
-    
   });
 
   it('create an area with columnsNum equal 2', () => {
@@ -81,7 +75,6 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
     expect(wrapper.vm.areaColumns.length).to.equal(2);
   });
 
@@ -93,7 +86,6 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
     expect(wrapper.vm.areaColumns.length).to.equal(1);
   });
 
@@ -104,7 +96,6 @@ describe('Area', () => {
       }
     });
 
-    expect(wrapper.hasClass('van-area')).to.be.true;
     const cancelBtn = wrapper.find('.van-picker__cancel')[0];
     const eventStub = sinon.stub(wrapper.vm, '$emit');
 
@@ -115,4 +106,23 @@ describe('Area', () => {
       done();
     });
   });
+
+  it('onChange method', () => {
+    wrapper = mount(Area, {
+      propsData: {
+        areaList: AreaList
+      }
+    });
+
+    let list = [];
+    const setColumnValues = (index, arr) => {
+      list = [...list, ...arr];
+    };
+    const code = { code: '110101' };
+
+    wrapper.vm.onChange({ setColumnValues }, [code], 0);
+    wrapper.vm.onChange({ setColumnValues }, [code, code], 1);
+
+    expect(list.length).to.equal(33);
+  });
 });
diff --git a/test/unit/specs/picker.spec.js b/test/unit/specs/picker.spec.js
index 2c7434f19..ff2bae1b7 100644
--- a/test/unit/specs/picker.spec.js
+++ b/test/unit/specs/picker.spec.js
@@ -3,17 +3,23 @@ import PickerColumn from 'packages/picker/PickerColumn';
 import { mount } from 'avoriaz';
 import { dragHelper } from '../utils';
 
-const pickerColumns = [
+const simpleColumn = ['1990', '1991', '1992', '1993', '1994', '1995'];
+const columns = [
   {
     values: ['vip', 'normal'],
     className: 'column1'
   },
   {
-    values: ['1990', '1991', '1992', '1993', '1994', '1995'],
+    values: simpleColumn,
     className: 'column2'
   }
 ];
 
+const disabledOption = [{
+  disabled: true,
+  text: '123'
+}];
+
 describe('Picker', () => {
   let wrapper;
   afterEach(() => {
@@ -23,7 +29,7 @@ describe('Picker', () => {
   it('create picker', () => {
     wrapper = mount(Picker, {
       propsData: {
-        columns: pickerColumns
+        columns: columns
       }
     });
 
@@ -36,7 +42,7 @@ describe('Picker', () => {
   it('set picker values', () => {
     wrapper = mount(Picker, {
       propsData: {
-        columns: pickerColumns
+        columns: columns
       }
     });
 
@@ -63,6 +69,7 @@ describe('Picker', () => {
     expect(wrapper.vm.getColumnIndex(0)).to.equal(0);
     expect(wrapper.vm.getColumnIndex(1)).to.equal(2);
     expect(wrapper.vm.getColumnIndex(2)).to.equal(undefined);
+    expect(wrapper.vm.getIndexes(2)).to.eql([0, 2]);
 
     wrapper.vm.setIndexes([1, 4]);
     expect(wrapper.vm.getColumnValue(0)).to.equal('normal');
@@ -70,7 +77,7 @@ describe('Picker', () => {
     expect(wrapper.vm.getColumnValue(2)).to.equal(undefined);
   });
 
-  it('create a invalid columns picker', () => {
+  it('create a simple column picker', () => {
     wrapper = mount(Picker, {
       propsData: {
         columns: undefined
@@ -81,10 +88,20 @@ describe('Picker', () => {
     expect(wrapper.vm.currentColumns.length).to.equal(0);
   });
 
+  it('create a invalid columns picker', () => {
+    wrapper = mount(Picker, {
+      propsData: {
+        columns: simpleColumn
+      }
+    });
+
+    expect(wrapper.vm.isSimpleColumn).to.be.true;
+  });
+
   it('set invalid index columns', () => {
     wrapper = mount(Picker, {
       propsData: {
-        columns: pickerColumns
+        columns: columns
       }
     });
 
@@ -100,7 +117,7 @@ describe('Picker', () => {
   it('emit a change event when column change', (done) => {
     wrapper = mount(Picker, {
       propsData: {
-        columns: pickerColumns
+        columns: columns
       }
     });
 
@@ -113,6 +130,22 @@ describe('Picker', () => {
     });
   });
 
+  it('simple column emit a change event when column change', (done) => {
+    wrapper = mount(Picker, {
+      propsData: {
+        columns: simpleColumn
+      }
+    });
+
+    const eventStub = sinon.stub(wrapper.vm, '$emit');
+    wrapper.vm.setColumnValue(0, '1993');
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledOnce).to.be.true;
+      expect(eventStub.calledWith('change'));
+      done();
+    });
+  });
+
   it('create a empty picker and emit a cencel event', (done) => {
     wrapper = mount(Picker, {
       propsData: {
@@ -155,6 +188,25 @@ describe('Picker', () => {
       done();
     });
   });
+
+  it('simple column emit a confirm event', (done) => {
+    wrapper = mount(Picker, {
+      propsData: {
+        columns: simpleColumn,
+        showToolbar: true
+      }
+    });
+
+    const eventStub = sinon.stub(wrapper.vm, '$emit');
+    const cancelBtn = wrapper.find('.van-picker__confirm')[0];
+    cancelBtn.trigger('click');
+
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledOnce).to.be.true;
+      expect(eventStub.calledWith('confirm'));
+      done();
+    });
+  });
 });
 
 describe('PickerColumn', () => {
@@ -199,6 +251,22 @@ describe('PickerColumn', () => {
     });
   });
 
+  it('change defaultIndex', (done) => {
+    wrapper = mount(PickerColumn, {
+      propsData: {
+        options: simpleColumn,
+        defaultIndex: 0
+      }
+    });
+
+    expect(wrapper.vm.currentIndex).to.equal(0);
+    wrapper.vm.defaultIndex = 2;
+    wrapper.vm.$nextTick(() => {
+      expect(wrapper.vm.currentIndex).to.equal(2);
+      done();
+    });
+  });
+
   it('select disabled options', () => {
     wrapper = mount(PickerColumn, {
       propsData: {
@@ -217,10 +285,21 @@ describe('PickerColumn', () => {
     expect(wrapper.vm.currentIndex).to.equal(1);
   });
 
+  it('disabled options', () => {
+    wrapper = mount(PickerColumn, {
+      propsData: {
+        options: disabledOption
+      }
+    });
+
+    expect(wrapper.find('.van-picker-column--disabled').length).to.equal(1);
+    expect(wrapper.vm.currentIndex).to.equal(undefined);
+  });
+
   it('drag options', () => {
     wrapper = mount(PickerColumn, {
       propsData: {
-        options: pickerColumns[1].values
+        options: columns[1].values
       }
     });
     expect(wrapper.vm.currentIndex).to.equal(0);
diff --git a/test/unit/specs/submit-bar.spec.js b/test/unit/specs/submit-bar.spec.js
index 5b12662be..df95e6a4d 100644
--- a/test/unit/specs/submit-bar.spec.js
+++ b/test/unit/specs/submit-bar.spec.js
@@ -64,7 +64,7 @@ describe('SubmitBar', () => {
     }, 300);
   });
 
-  it('can not submit when disabled', () => {
+  it('can not submit when disabled', (done) => {
     wrapper = mount(SubmitBar, {
       propsData: {
         disabled: true,
@@ -77,10 +77,11 @@ describe('SubmitBar', () => {
     wrapper.find('.van-button')[0].trigger('click');
     setTimeout(() => {
       expect(submitSpyFunc.calledOnce).to.be.false;
+      done();
     }, 300);
   });
 
-  it('can not submit when loading', () => {
+  it('can not submit when loading', (done) => {
     wrapper = mount(SubmitBar, {
       propsData: {
         loading: true,
@@ -93,6 +94,7 @@ describe('SubmitBar', () => {
     wrapper.find('.van-button')[0].trigger('click');
     setTimeout(() => {
       expect(submitSpyFunc.calledOnce).to.be.false;
+      done();
     }, 300);
   });
 });
diff --git a/test/unit/specs/tabs.spec.js b/test/unit/specs/tabs.spec.js
index 3de9cf3f9..197d59885 100644
--- a/test/unit/specs/tabs.spec.js
+++ b/test/unit/specs/tabs.spec.js
@@ -95,7 +95,7 @@ describe('Tabs', () => {
         active: 7
       }
     });
- 
+
     wrapper.vm.$nextTick(() => {
       const nTab = wrapper.find('.van-tab')[6];
       nTab.trigger('click');
@@ -103,50 +103,6 @@ describe('Tabs', () => {
     });
   });
 
-  it('test swipe', (done) => {
-    wrapper = mount(MoreTabsTestComponent, {
-      attachToDocument: true
-    });
-
-    setTimeout(() => {
-      const nSwipe = wrapper.find('.van-tabs__swipe')[0];
-
-      const eventMouseObject = new window.Event('mousedown');
-      eventMouseObject.pageX = 200;
-      nSwipe.element.dispatchEvent(eventMouseObject);
-
-      const eventTouchObject = new window.Event('touchstart');
-      eventTouchObject.changedTouches = [{ pageX: 200 }];
-      nSwipe.element.dispatchEvent(eventTouchObject);
-    }, 500);
-
-    setTimeout(() => {
-      const nSwipe = wrapper.find('.van-tabs__swipe')[0];
-
-      const eventMouseMoveObject = new window.Event('mousemove');
-      eventMouseMoveObject.pageX = 0;
-      document.dispatchEvent(eventMouseMoveObject);
-
-      const eventObject = new window.Event('touchmove');
-      eventObject.changedTouches = [{ pageX: 0 }];
-      nSwipe.element.dispatchEvent(eventObject);
-
-      // 结束滑动
-      const eventMouseUpObject = new window.Event('mouseup');
-      document.dispatchEvent(eventMouseUpObject);
-      const eventEndObject = new window.Event('touchend');
-      eventEndObject.changedTouches = [{}];
-      nSwipe.element.dispatchEvent(eventEndObject);
-    }, 1000);
-
-    setTimeout(() => {
-      const nItem = wrapper.find('.van-tab')[0];
-      expect(nItem.hasClass('van-tab--active')).to.be.true;
-
-      done();
-    }, 1200);
-  });
-
   it('watch tab props changes', (done) => {
     wrapper = mount(TabsTestComponent);
     wrapper.vm.firstTabTitle = '测试标题';
diff --git a/test/unit/specs/toast.spec.js b/test/unit/specs/toast.spec.js
index 72806c33e..e5b412978 100644
--- a/test/unit/specs/toast.spec.js
+++ b/test/unit/specs/toast.spec.js
@@ -89,7 +89,7 @@ describe('Toast', () => {
   it('toast disappeared after duration', (done) => {
     Toast({
       message: 'toast',
-      duration: 100
+      duration: 10
     });
 
     expect(document.querySelector('.van-toast-wrapper').style.display === 'none').to.be.false;
@@ -97,7 +97,7 @@ describe('Toast', () => {
     setTimeout(() => {
       expect(document.querySelector('.van-toast-wrapper').style.display === 'none').to.be.true;
       done();
-    }, 500);
+    }, 300);
   });
 
   it('toast duration 0', (done) => {
diff --git a/test/unit/specs/uploader.spec.js b/test/unit/specs/uploader.spec.js
index 1e4d1b9a1..78745979b 100644
--- a/test/unit/specs/uploader.spec.js
+++ b/test/unit/specs/uploader.spec.js
@@ -93,4 +93,16 @@ describe('Uploader', () => {
     expect(wrapper.contains('input')).to.equal(true);
     expect(wrapper.vm.onValueChange({ target: { files: [new File([], '/Users')] }})).to.equal(undefined);
   });
+
+  it('unknown resultType', () => {
+    wrapper = mount(Uploader, {
+      propsData: {
+        disabled: false,
+        resultType: 'xxxx'
+      }
+    });
+
+    expect(wrapper.contains('input')).to.equal(true);
+    expect(wrapper.vm.onValueChange({ target: { files: [new File([], '/Users')] }})).to.equal(undefined);
+  });
 });
diff --git a/test/unit/specs/utils.spec.js b/test/unit/specs/utils.spec.js
new file mode 100644
index 000000000..120df21fa
--- /dev/null
+++ b/test/unit/specs/utils.spec.js
@@ -0,0 +1,57 @@
+import deepClone from 'packages/utils/deep-clone';
+import { isAndroid, isDef, camelize, get } from 'packages/utils';
+import { raf, cancel } from 'packages/utils/raf';
+
+describe('Utils', () => {
+  it('deepClone', () => {
+    const a = { foo: 0 };
+    const b = { foo: 0, bar: 1 };
+    const fn = () => {};
+    const arr = [a, b];
+    expect(deepClone(a)).to.eql(a);
+    expect(deepClone(b)).to.eql(b);
+    expect(deepClone(fn)).to.eql(fn);
+    expect(deepClone(arr)).to.eql(arr);
+    expect(deepClone(undefined)).to.eql(undefined);
+    expect(deepClone(1)).to.eql(1);
+  });
+
+  it('isDef', () => {
+    expect(isDef(null)).to.be.false;
+    expect(isDef(undefined)).to.be.false;
+    expect(isDef(1)).to.be.true;
+    expect(isDef('1')).to.be.true;
+    expect(isDef({})).to.be.true;
+    expect(isDef(() => {})).to.be.true;
+  });
+
+  it('camelize', () => {
+    expect(camelize('ab')).to.equal('ab');
+    expect(camelize('a-b')).to.equal('aB');
+    expect(camelize('a-b-c-d')).to.equal('aBCD');
+    expect(camelize('a-b-')).to.equal('aB-');
+    expect(camelize('-a-b')).to.equal('AB');
+    expect(camelize('-')).to.equal('-');
+  });
+
+  it('get', () => {
+    expect(get({ a: 1 }, 'a')).to.equal(1);
+    expect(get({ a: { b: 2 }}, 'a.b')).to.equal(2);
+    expect(get({ a: { b: 2 }}, 'a.b.c')).to.equal('');
+  });
+
+  it('isAndroid', () => {
+    expect(isAndroid()).to.be.false;
+  });
+
+  it('raf', (done) => {
+    const spy = sinon.spy();
+    raf(spy);
+
+    setTimeout(() => {
+      expect(spy.calledOnce).to.be.true;
+      cancel(1);
+      done();
+    }, 50);
+  });
+});