增加单独禁用stepper input功能 (#146)

* fix: sku message key

* fix: 改用goods_id当key

* fix: 漏改一处

* feat: 增加单独禁用stepper input功能

* fix: update doc

* fix: rename spec file

test/unit/specs/stepper.spec.js

@@ -0,0 +1,138 @@
+import Stepper from 'packages/stepper';
+import { mount } from 'avoriaz';
+
+describe('Stepper', () => {
+  let wrapper;
+
+  afterEach(() => {
+    wrapper && wrapper.destroy();
+  });
+
+  it('create a stepper', () => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        defaultValue: 1
+      }
+    });
+
+    expect(wrapper.hasClass('van-stepper')).to.be.true;
+    expect(wrapper.data().currentValue).to.equal(1);
+
+    const plusButton = wrapper.find('.van-stepper__plus')[0];
+    plusButton.trigger('click');
+
+    expect(wrapper.data().currentValue).to.equal(2);
+
+    const minusButton = wrapper.find('.van-stepper__minus')[0];
+    minusButton.trigger('click');
+    expect(wrapper.data().currentValue).to.equal(1);
+  });
+
+  it('create a disabled stepper', (done) => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        disabled: true
+      }
+    });
+
+    expect(wrapper.hasClass('van-stepper')).to.be.true;
+    const minusButton = wrapper.find('.van-stepper__minus')[0];
+    expect(minusButton.hasClass('van-stepper__minus--disabled')).to.be.true;
+
+    const eventStub = sinon.stub(wrapper.vm, '$emit');
+    minusButton.trigger('click');
+
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledWith('overlimit'));
+      done();
+    });
+
+    const plusButton = wrapper.find('.van-stepper__plus')[0];
+    expect(plusButton.hasClass('van-stepper__plus--disabled')).to.be.true;
+
+    plusButton.trigger('click');
+
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledWith('overlimit'));
+      done();
+    });
+  });
+
+  it('only disable stepper input', () => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        disableInput: true
+      }
+    });
+
+    const input = wrapper.find('.van-stepper__input')[0];
+    expect(input.hasAttribute('disabled', 'disabled')).to.be.true;
+  });
+
+  it('update stepper value use v-model', (done) => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        value: 1
+      }
+    });
+
+    expect(wrapper.hasClass('van-stepper')).to.be.true;
+    const eventStub = sinon.stub(wrapper.vm, '$emit');
+
+    wrapper.vm.value = 2;
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(eventStub.calledWith('input'));
+      expect(eventStub.calledWith('change'));
+      done();
+    });
+  });
+
+  it('correct value when value is not correct', (done) => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        value: 50,
+        max: 30
+      }
+    });
+
+    expect(wrapper.hasClass('van-stepper')).to.be.true;
+    expect(wrapper.vm.currentValue).to.equal(30);
+    const eventStub = sinon.stub(wrapper.vm, '$emit');
+
+    wrapper.vm.value = 30;
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(wrapper.vm.currentValue).to.equal(30);
+      expect(eventStub.calledWith('input'));
+
+      // value设置非数字时，则使用设置的最小值（默认1）
+      wrapper.vm.value = 'abc';
+      wrapper.update();
+      wrapper.vm.$nextTick(() => {
+        expect(wrapper.vm.currentValue).to.equal(1);
+        done();
+      });
+    });
+  });
+
+  it('handle when input change', (done) => {
+    wrapper = mount(Stepper, {
+      propsData: {
+        value: 1
+      }
+    });
+
+    const input = wrapper.find('.van-stepper__input')[0];
+    input.element.value = 2;
+    input.trigger('input');
+
+    wrapper.update();
+    wrapper.vm.$nextTick(() => {
+      expect(wrapper.data().currentValue).to.equal(2);
+      done();
+    });
+  });
+});