ant-design-vue/components/__tests__/util/domHook.js

59 lines
1.7 KiB
JavaScript

const __NULL__ = { notExist: true };
export function spyElementPrototypes(Element, properties) {
const propNames = Object.keys(properties);
const originDescriptors = {};
propNames.forEach(propName => {
const originDescriptor = Object.getOwnPropertyDescriptor(Element.prototype, propName);
originDescriptors[propName] = originDescriptor || __NULL__;
const spyProp = properties[propName];
if (typeof spyProp === 'function') {
// If is a function
Element.prototype[propName] = function spyFunc(...args) {
return spyProp.call(this, originDescriptor, ...args);
};
} else {
// Otherwise tread as a property
Object.defineProperty(Element.prototype, propName, {
...spyProp,
set(value) {
if (spyProp.set) {
return spyProp.set.call(this, originDescriptor, value);
}
return originDescriptor.set(value);
},
get() {
if (spyProp.get) {
return spyProp.get.call(this, originDescriptor);
}
return originDescriptor.get();
},
});
}
});
return {
mockRestore() {
propNames.forEach(propName => {
const originDescriptor = originDescriptors[propName];
if (originDescriptor === __NULL__) {
delete Element.prototype[propName];
} else if (typeof originDescriptor === 'function') {
Element.prototype[propName] = originDescriptor;
} else {
Object.defineProperty(Element.prototype, propName, originDescriptor);
}
});
},
};
}
export function spyElementPrototype(Element, propName, property) {
return spyElementPrototypes(Element, {
[propName]: property,
});
}