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getWrappingComponent.jsx
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getWrappingComponent.jsx
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import React from 'react';
import PropTypes from 'prop-types';
import { expect } from 'chai';
import {
describeIf,
itIf,
} from '../../_helpers';
import {
is,
} from '../../_helpers/version';
export default function describeGetWrappingComponent({
Wrap,
WrapperName,
isShallow,
}) {
class RendersNull extends React.Component {
render() {
return null;
}
}
class StateTester extends React.Component {
render() {
return null;
}
}
class RendersChildren extends React.Component {
render() {
const { children } = this.props;
return children;
}
}
describeIf(is('<= 0.13'), '.getWrappingComponent()', () => {
it('throws', () => {
expect(() => Wrap(<div />, {
wrappingComponent: RendersChildren,
})).to.throw(TypeError, 'your adapter does not support `wrappingComponent`. Try upgrading it!');
});
});
describeIf(is('> 0.13'), '.getWrappingComponent()', () => {
class TestProvider extends React.Component {
getChildContext() {
const { value, renderMore, renderStateTester } = this.props;
return {
testContext: value || 'Hello world!',
renderMore: !!renderMore,
renderStateTester: !!renderStateTester,
};
}
render() {
const { children } = this.props;
return children;
}
}
TestProvider.childContextTypes = {
testContext: PropTypes.string,
renderMore: PropTypes.bool,
renderStateTester: PropTypes.bool,
};
class MyWrappingComponent extends React.Component {
constructor() {
super();
this.state = { renderStateTester: false };
}
render() {
const { children, contextValue, renderMore } = this.props;
const { renderStateTester } = this.state;
return (
<main>
<TestProvider
value={contextValue}
renderMore={renderMore}
renderStateTester={renderStateTester}
>
{children}
</TestProvider>
</main>
);
}
}
class MyComponent extends React.Component {
render() {
const {
testContext,
renderMore,
renderStateTester,
explicitContext,
} = this.context;
return (
<div>
<div>Context says: {testContext}{explicitContext}</div>
{renderMore && <RendersNull />}
{renderStateTester && <StateTester />}
</div>
);
}
}
MyComponent.contextTypes = {
...TestProvider.childContextTypes,
explicitContext: PropTypes.string,
};
const context = {
explicitContext: ' stop!',
};
it('gets a Wrapper for the wrappingComponent', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
expect(wrappingComponent.type()).to.equal(isShallow ? 'main' : MyWrappingComponent);
expect(wrappingComponent.parent().exists()).to.equal(false);
wrappingComponent.setProps({ contextValue: 'this is a test.' });
expect(wrapper.text()).to.equal('Context says: this is a test. stop!');
});
it('updates the wrapper when the wrappingComponent is updated', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
wrappingComponent.setProps({ renderMore: true });
expect(wrapper.find(RendersNull).exists()).to.equal(true);
expect(wrapper.text()).to.equal(`Context says: Hello world! stop!${isShallow ? '<RendersNull />' : ''}`);
});
it('updates the primary wrapper after a state update', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context: {
explicitContext: ' stop!',
},
});
const wrappingComponent = wrapper.getWrappingComponent();
wrappingComponent.setState({ renderStateTester: true });
expect(wrapper.find(StateTester).exists()).to.equal(true);
expect(wrapper.text()).to.equal(`Context says: Hello world! stop!${isShallow ? '<StateTester />' : ''}`);
});
it('updates the wrappingComponent when the root is updated', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
wrapper.unmount();
expect(wrappingComponent.children()).to.have.lengthOf(0);
if (!isShallow) {
expect(wrappingComponent.exists()).to.equal(false);
}
});
it('handles the wrapper being unmounted', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
wrapper.unmount();
wrappingComponent.update();
expect(wrappingComponent.children()).to.have.lengthOf(0);
if (isShallow) {
expect(wrappingComponent.debug()).to.equal('');
} else {
expect(wrappingComponent.exists()).to.equal(false);
expect(() => wrappingComponent.setProps({})).to.throw(
'The wrapping component may not be updated if the root is unmounted.',
);
}
});
itIf(is('>= 16.3'), 'updates a <Provider /> if it is rendered as root', () => {
const Context = React.createContext();
function WrappingComponent(props) {
const { value, children } = props;
return (
<Context.Provider value={value}>
{children}
</Context.Provider>
);
}
const wrapper = Wrap((
<Context.Consumer>
{value => <div>{value}</div>}
</Context.Consumer>
), {
wrappingComponent: WrappingComponent,
wrappingComponentProps: { value: 'hello!' },
});
const wrappingComponent = wrapper.getWrappingComponent();
expect(wrapper.text()).to.equal('hello!');
wrappingComponent.setProps({ value: 'goodbye!' });
expect(wrapper.text()).to.equal('goodbye!');
});
itIf(!isShallow, 'handles a partial prop update', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
wrappingComponent.setProps({ contextValue: 'hello' });
wrappingComponent.setProps({ foo: 'bar' });
expect(wrappingComponent.prop('foo')).to.equal('bar');
expect(wrappingComponent.prop('contextValue')).to.equal('hello');
});
it('cannot be called on the non-root', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
expect(() => wrapper.find('div').getWrappingComponent()).to.throw(
`${WrapperName}::getWrappingComponent() can only be called on the root`,
);
});
it('cannot be called on itself', () => {
const wrapper = Wrap(<MyComponent />, {
wrappingComponent: MyWrappingComponent,
context,
});
const wrappingComponent = wrapper.getWrappingComponent();
expect(() => wrappingComponent.getWrappingComponent()).to.throw(
`${WrapperName}::getWrappingComponent() can only be called on the root`,
);
});
it('throws an error if `wrappingComponent` was not provided', () => {
const wrapper = Wrap(<MyComponent />);
expect(() => wrapper.getWrappingComponent()).to.throw(
`${WrapperName}::getWrappingComponent() can only be called on a wrapper that was originally passed a \`wrappingComponent\` option`,
);
});
});
}