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let React;
let ChildMapping;
beforeEach(() => {
React = require('react');
ChildMapping = require('../src/utils/ChildMapping');
});
describe('ChildMapping', () => {
it('should support getChildMapping', () => {
let oneone = <div key="oneone" />;
let onetwo = <div key="onetwo" />;
let one = (
<div key="one">
{oneone}
{onetwo}
</div>
);
let two = <div key="two">foo</div>;
let component = (
<div>
{one}
{two}
</div>
);
let mapping = ChildMapping.getChildMapping(component.props.children);
expect(mapping['.$one'].props).toEqual(one.props);
expect(mapping['.$two'].props).toEqual(two.props);
});
it('should support mergeChildMappings for adding keys', () => {
let prev = {
one: true,
two: true,
};
let next = {
one: true,
two: true,
three: true,
};
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
one: true,
two: true,
three: true,
});
});
it('should support mergeChildMappings for removing keys', () => {
let prev = {
one: true,
two: true,
three: true,
};
let next = {
one: true,
two: true,
};
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
one: true,
two: true,
three: true,
});
});
it('should support mergeChildMappings for adding and removing', () => {
let prev = {
one: true,
two: true,
three: true,
};
let next = {
one: true,
two: true,
four: true,
};
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
one: true,
two: true,
three: true,
four: true,
});
});
it('should reconcile overlapping insertions and deletions', () => {
let prev = {
one: true,
two: true,
four: true,
five: true,
};
let next = {
one: true,
two: true,
three: true,
five: true,
};
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
one: true,
two: true,
three: true,
four: true,
five: true,
});
});
it('should support mergeChildMappings with undefined input', () => {
let prev = {
one: true,
two: true,
};
let next;
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
one: true,
two: true,
});
prev = undefined;
next = {
three: true,
four: true,
};
expect(ChildMapping.mergeChildMappings(prev, next)).toEqual({
three: true,
four: true,
});
});
});
|
