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Fixes #973 Fixes #994 Fixes #995 BREAKING CHANGE: The tag name rendered by snapshots will use the rendered component tag, rather than the registered component name
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| import { createStubFromComponent } from 'shared/create-component-stubs' | ||
| import { resolveComponent, semVerGreaterThan } from 'shared/util' | ||
| import { isReservedTag } from 'shared/validators' | ||
| import { addHook } from './add-hook' | ||
| import Vue from 'vue' | ||
|
|
||
| const isWhitelisted = (el, whitelist) => resolveComponent(el, whitelist) | ||
| const isAlreadyStubbed = (el, stubs) => stubs.has(el) | ||
| const isDynamicComponent = cmp => typeof cmp === 'function' && !cmp.cid | ||
|
|
||
| const CREATE_ELEMENT_ALIAS = semVerGreaterThan(Vue.version, '2.1.5') | ||
| ? '_c' | ||
| : '_h' | ||
| const LIFECYCLE_HOOK = semVerGreaterThan(Vue.version, '2.1.8') | ||
| ? 'beforeCreate' | ||
| : 'beforeMount' | ||
|
|
||
| function shouldExtend (component, _Vue) { | ||
| return ( | ||
| (typeof component === 'function' && !isDynamicComponent(component)) || | ||
| (component && component.extends) | ||
| ) | ||
| } | ||
|
|
||
| function extend (component, _Vue) { | ||
| const stub = _Vue.extend(component.options) | ||
| stub.options.$_vueTestUtils_original = component | ||
| return stub | ||
| } | ||
|
|
||
| function createStubIfNeeded (shouldStub, component, _Vue, el) { | ||
| if (shouldStub) { | ||
| return createStubFromComponent(component || {}, el) | ||
| } | ||
|
|
||
| if (shouldExtend(component, _Vue)) { | ||
| return extend(component, _Vue) | ||
| } | ||
| } | ||
|
|
||
| function shouldNotBeStubbed (el, whitelist, modifiedComponents) { | ||
| return ( | ||
| (typeof el === 'string' && isReservedTag(el)) || | ||
| isWhitelisted(el, whitelist) || | ||
| isAlreadyStubbed(el, modifiedComponents) | ||
| ) | ||
| } | ||
|
|
||
| function isConstructor (el) { | ||
| return typeof el === 'function' | ||
| } | ||
|
|
||
| export function patchRender (_Vue, stubs, stubAllComponents) { | ||
| // This mixin patches vm.$createElement so that we can stub all components | ||
| // before they are rendered in shallow mode. We also need to ensure that | ||
| // component constructors were created from the _Vue constructor. If not, | ||
| // we must replace them with components created from the _Vue constructor | ||
| // before calling the original $createElement. This ensures that components | ||
| // have the correct instance properties and stubs when they are rendered. | ||
| function patchRenderMixin () { | ||
| const vm = this | ||
|
|
||
| if (vm.$options.$_doNotStubChildren || vm._isFunctionalContainer) { | ||
| return | ||
| } | ||
|
|
||
| const modifiedComponents = new Set() | ||
| const originalCreateElement = vm.$createElement | ||
| const originalComponents = vm.$options.components | ||
|
|
||
| const createElement = (el, ...args) => { | ||
| if (shouldNotBeStubbed(el, stubs, modifiedComponents)) { | ||
| return originalCreateElement(el, ...args) | ||
| } | ||
|
|
||
| if (isConstructor(el)) { | ||
| if (stubAllComponents) { | ||
| const stub = createStubFromComponent(el, el.name || 'anonymous') | ||
| return originalCreateElement(stub, ...args) | ||
| } | ||
|
|
||
| const Constructor = shouldExtend(el, _Vue) ? extend(el, _Vue) : el | ||
|
|
||
| return originalCreateElement(Constructor, ...args) | ||
| } | ||
|
|
||
| if (typeof el === 'string') { | ||
| let original = resolveComponent(el, originalComponents) | ||
|
|
||
| if ( | ||
| original && | ||
| original.options && | ||
| original.options.$_vueTestUtils_original | ||
| ) { | ||
| original = original.options.$_vueTestUtils_original | ||
| } | ||
|
|
||
| if (isDynamicComponent(original)) { | ||
| return originalCreateElement(el, ...args) | ||
| } | ||
|
|
||
| const stub = createStubIfNeeded(stubAllComponents, original, _Vue, el) | ||
|
|
||
| if (stub) { | ||
| vm.$options.components = { | ||
| ...vm.$options.components, | ||
| [el]: stub | ||
| } | ||
| modifiedComponents.add(el) | ||
| } | ||
| } | ||
|
|
||
| return originalCreateElement(el, ...args) | ||
| } | ||
|
|
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| vm[CREATE_ELEMENT_ALIAS] = createElement | ||
| vm.$createElement = createElement | ||
| } | ||
|
|
||
| addHook(_Vue.options, LIFECYCLE_HOOK, patchRenderMixin) | ||
| } |
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