Viewing github.com/facebook/react/packages/react-devtools-shared/src/__tests_

```
/**
```

 * Copyright (c) Meta Platforms, Inc. and affiliates.

```
 *
```

 * This source code is licensed under the MIT license found in the

 * LICENSE file in the root directory of this source tree.

```
 *
```
```
 * @flow
```
```
 */
```

import type {FrontendBridge} from 'react-devtools-shared/src/bridge';

import type Store from 'react-devtools-shared/src/devtools/store';

```
describe('editing interface', () => {
```
```
  let PropTypes;
```
```
  let React;
```
```
  let bridge: FrontendBridge;
```
```
  let legacyRender;
```
```
  let store: Store;
```
```
  let utils;
```
```
  const flushPendingUpdates = () => {
```

    utils.act(() => jest.runOnlyPendingTimers());

```
  };
```
```
  beforeEach(() => {
```
```
    utils = require('./utils');
```
```
    legacyRender = utils.legacyRender;
```
```
    bridge = global.bridge;
```
```
    store = global.store;
```

    store.collapseNodesByDefault = false;

```
    store.componentFilters = [];
```
```
    PropTypes = require('prop-types');
```
```
    React = require('react');
```
```
  });
```
```
  describe('props', () => {
```
```
    let committedClassProps;
```
```
    let committedFunctionProps;
```
```
    let inputRef;
```
```
    let classID;
```
```
    let functionID;
```
```
    let hostComponentID;
```
```
    async function mountTestApp() {
```

      class ClassComponent extends React.Component {

```
        componentDidMount() {
```

          committedClassProps = this.props;

```
        }
```
```
        componentDidUpdate() {
```

          committedClassProps = this.props;

```
        }
```
```
        render() {
```
```
          return null;
```
```
        }
```
```
      }
```

      function FunctionComponent(props) {

```
        React.useLayoutEffect(() => {
```

          committedFunctionProps = props;

```
        });
```
```
        return null;
```
```
      }
```

      inputRef = React.createRef(null);

      const container = document.createElement('div');

```
      await utils.actAsync(() =>
```
```
        legacyRender(
```
```
          <>
```
```
            <ClassComponent
```
```
              array={[1, 2, 3]}
```

              object={{nested: 'initial'}}

```
              shallow="initial"
```
```
            />
```
```
            ,
```
```
            <FunctionComponent
```
```
              array={[1, 2, 3]}
```

              object={{nested: 'initial'}}

```
              shallow="initial"
```
```
            />
```
```
            ,
```

            <input ref={inputRef} onChange={jest.fn()} value="initial" />

```
          </>,
```
```
          container,
```
```
        ),
```
```
      );
```

      classID = ((store.getElementIDAtIndex(0): any): number);

      functionID = ((store.getElementIDAtIndex(1): any): number);

      hostComponentID = ((store.getElementIDAtIndex(2): any): number);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```

      expect(inputRef.current.value).toBe('initial');

```
    }
```
```
    // @reactVersion >= 16.9
```

    it('should have editable values', async () => {

```
      await mountTestApp();
```

      function overrideProps(id, path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'props',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideProps(classID, ['shallow'], 'updated');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideProps(classID, ['object', 'nested'], 'updated');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideProps(classID, ['array', 1], 'updated');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideProps(functionID, ['shallow'], 'updated');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideProps(functionID, ['object', 'nested'], 'updated');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideProps(functionID, ['array', 1], 'updated');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    // Tests the combination of older frontend (DevTools UI) with newer backend (embedded within a renderer).

    it('should still support overriding prop values with legacy backend methods', async () => {

```
      await mountTestApp();
```

      function overrideProps(id, path, value) {

        const rendererID = utils.getRendererID();

```
        bridge.send('overrideProps', {
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideProps(classID, ['object', 'nested'], 'updated');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```

      overrideProps(functionID, ['shallow'], 'updated');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 17.0
```

    it('should have editable paths', async () => {

```
      await mountTestApp();
```

      function renamePath(id, oldPath, newPath) {

        const rendererID = utils.getRendererID();

```
        bridge.send('renamePath', {
```
```
          id,
```
```
          oldPath,
```
```
          newPath,
```
```
          rendererID,
```
```
          type: 'props',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      renamePath(classID, ['shallow'], ['after']);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(classID, ['object', 'nested'], ['object', 'after']);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          after: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(functionID, ['shallow'], ['after']);

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(functionID, ['object', 'nested'], ['object', 'after']);

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          after: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should enable adding new object properties and array values', async () => {

```
      await mountTestApp();
```

      function overrideProps(id, path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'props',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideProps(classID, ['new'], 'value');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideProps(classID, ['object', 'new'], 'value');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideProps(classID, ['array', 3], 'new value');

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3, 'new value'],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideProps(functionID, ['new'], 'value');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideProps(functionID, ['object', 'new'], 'value');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideProps(functionID, ['array', 3], 'new value');

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3, 'new value'],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 17.0
```

    it('should have deletable keys', async () => {

```
      await mountTestApp();
```
```
      function deletePath(id, path) {
```

        const rendererID = utils.getRendererID();

```
        bridge.send('deletePath', {
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'props',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      deletePath(classID, ['shallow']);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
      });
```

      deletePath(classID, ['object', 'nested']);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {},
```
```
      });
```

      deletePath(classID, ['array', 1]);

      expect(committedClassProps).toStrictEqual({

```
        array: [1, 3],
```
```
        object: {},
```
```
      });
```

      deletePath(functionID, ['shallow']);

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
      });
```

      deletePath(functionID, ['object', 'nested']);

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {},
```
```
      });
```

      deletePath(functionID, ['array', 1]);

      expect(committedFunctionProps).toStrictEqual({

```
        array: [1, 3],
```
```
        object: {},
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should support editing host component values', async () => {

```
      await mountTestApp();
```

      function overrideProps(id, path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'props',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideProps(hostComponentID, ['value'], 'updated');

      expect(inputRef.current.value).toBe('updated');

```
    });
```
```
  });
```
```
  describe('state', () => {
```
```
    let committedState;
```
```
    let id;
```
```
    async function mountTestApp() {
```

      class ClassComponent extends React.Component {

```
        state = {
```
```
          array: [1, 2, 3],
```
```
          object: {
```
```
            nested: 'initial',
```
```
          },
```
```
          shallow: 'initial',
```
```
        };
```
```
        componentDidMount() {
```
```
          committedState = this.state;
```
```
        }
```
```
        componentDidUpdate() {
```
```
          committedState = this.state;
```
```
        }
```
```
        render() {
```
```
          return null;
```
```
        }
```
```
      }
```

      const container = document.createElement('div');

```
      await utils.actAsync(() =>
```
```
        legacyRender(
```

          <ClassComponent object={{nested: 'initial'}} shallow="initial" />,

```
          container,
```
```
        ),
```
```
      );
```

      id = ((store.getElementIDAtIndex(0): any): number);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```
```
    }
```
```
    // @reactVersion >= 16.9
```

    it('should have editable values', async () => {

```
      await mountTestApp();
```

      function overrideState(path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'state',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideState(['shallow'], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {nested: 'initial'},
```
```
        shallow: 'updated',
```
```
      });
```

      overrideState(['object', 'nested'], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {nested: 'updated'},
```
```
        shallow: 'updated',
```
```
      });
```

      overrideState(['array', 1], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {nested: 'updated'},
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    // Tests the combination of older frontend (DevTools UI) with newer backend (embedded within a renderer).

    it('should still support overriding state values with legacy backend methods', async () => {

```
      await mountTestApp();
```

      function overrideState(path, value) {

        const rendererID = utils.getRendererID();

```
        bridge.send('overrideState', {
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideState(['array', 1], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {nested: 'initial'},
```
```
        shallow: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should have editable paths', async () => {

```
      await mountTestApp();
```

      function renamePath(oldPath, newPath) {

        const rendererID = utils.getRendererID();

```
        bridge.send('renamePath', {
```
```
          id,
```
```
          oldPath,
```
```
          newPath,
```
```
          rendererID,
```
```
          type: 'state',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      renamePath(['shallow'], ['after']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(['object', 'nested'], ['object', 'after']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          after: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should enable adding new object properties and array values', async () => {

```
      await mountTestApp();
```

      function overrideState(path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'state',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```
```
      overrideState(['new'], 'value');
```

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideState(['object', 'new'], 'value');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideState(['array', 3], 'new value');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3, 'new value'],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should have deletable keys', async () => {

```
      await mountTestApp();
```
```
      function deletePath(path) {
```

        const rendererID = utils.getRendererID();

```
        bridge.send('deletePath', {
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'state',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```
```
      deletePath(['shallow']);
```

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
      });
```

      deletePath(['object', 'nested']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {},
```
```
      });
```
```
      deletePath(['array', 1]);
```

      expect(committedState).toStrictEqual({

```
        array: [1, 3],
```
```
        object: {},
```
```
      });
```
```
    });
```
```
  });
```
```
  describe('hooks', () => {
```
```
    let committedState;
```
```
    let hookID;
```
```
    let id;
```
```
    async function mountTestApp() {
```
```
      function FunctionComponent() {
```

        const [state] = React.useState({

```
          array: [1, 2, 3],
```
```
          object: {
```
```
            nested: 'initial',
```
```
          },
```
```
          shallow: 'initial',
```
```
        });
```
```
        React.useLayoutEffect(() => {
```
```
          committedState = state;
```
```
        });
```
```
        return null;
```
```
      }
```

      const container = document.createElement('div');

```
      await utils.actAsync(() =>
```

        legacyRender(<FunctionComponent />, container),

```
      );
```
```
      hookID = 0; // index
```

      id = ((store.getElementIDAtIndex(0): any): number);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```
```
    }
```
```
    // @reactVersion >= 16.9
```

    it('should have editable values', async () => {

```
      await mountTestApp();
```

      function overrideHookState(path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          hookID,
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'hooks',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideHookState(['shallow'], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideHookState(['object', 'nested'], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideHookState(['array', 1], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    // Tests the combination of older frontend (DevTools UI) with newer backend (embedded within a renderer).

    it('should still support overriding hook values with legacy backend methods', async () => {

```
      await mountTestApp();
```

      function overrideHookState(path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideHookState', {

```
          hookID,
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideHookState(['shallow'], 'updated');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 17.0
```

    it('should have editable paths', async () => {

```
      await mountTestApp();
```

      function renamePath(oldPath, newPath) {

        const rendererID = utils.getRendererID();

```
        bridge.send('renamePath', {
```
```
          id,
```
```
          hookID,
```
```
          oldPath,
```
```
          newPath,
```
```
          rendererID,
```
```
          type: 'hooks',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      renamePath(['shallow'], ['after']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(['object', 'nested'], ['object', 'after']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          after: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should enable adding new object properties and array values', async () => {

```
      await mountTestApp();
```

      function overrideHookState(path, value) {

        const rendererID = utils.getRendererID();

        bridge.send('overrideValueAtPath', {

```
          hookID,
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'hooks',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideHookState(['new'], 'value');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideHookState(['object', 'new'], 'value');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideHookState(['array', 3], 'new value');

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3, 'new value'],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 17.0
```

    it('should have deletable keys', async () => {

```
      await mountTestApp();
```
```
      function deletePath(path) {
```

        const rendererID = utils.getRendererID();

```
        bridge.send('deletePath', {
```
```
          hookID,
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'hooks',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```
```
      deletePath(['shallow']);
```

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
      });
```

      deletePath(['object', 'nested']);

      expect(committedState).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {},
```
```
      });
```
```
      deletePath(['array', 1]);
```

      expect(committedState).toStrictEqual({

```
        array: [1, 3],
```
```
        object: {},
```
```
      });
```
```
    });
```
```
  });
```
```
  describe('context', () => {
```
```
    let committedContext;
```
```
    let id;
```
```
    async function mountTestApp() {
```

      class LegacyContextProvider extends React.Component<any> {

```
        static childContextTypes = {
```
```
          array: PropTypes.array,
```
```
          object: PropTypes.object,
```
```
          shallow: PropTypes.string,
```
```
        };
```
```
        getChildContext() {
```
```
          return {
```
```
            array: [1, 2, 3],
```
```
            object: {
```
```
              nested: 'initial',
```
```
            },
```
```
            shallow: 'initial',
```
```
          };
```
```
        }
```
```
        render() {
```
```
          return this.props.children;
```
```
        }
```
```
      }
```

      class ClassComponent extends React.Component<any> {

```
        static contextTypes = {
```
```
          array: PropTypes.array,
```
```
          object: PropTypes.object,
```
```
          shallow: PropTypes.string,
```
```
        };
```
```
        componentDidMount() {
```

          committedContext = this.context;

```
        }
```
```
        componentDidUpdate() {
```

          committedContext = this.context;

```
        }
```
```
        render() {
```
```
          return null;
```
```
        }
```
```
      }
```

      const container = document.createElement('div');

```
      await utils.actAsync(() =>
```
```
        legacyRender(
```
```
          <LegacyContextProvider>
```
```
            <ClassComponent />
```
```
          </LegacyContextProvider>,
```
```
          container,
```
```
        ),
```
```
      );
```

      // This test only covers Class components.

      // Function components using legacy context are not editable.

      id = ((store.getElementIDAtIndex(1): any): number);

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```
```
    }
```
```
    // @reactVersion >= 16.9
```

    it('should have editable values', async () => {

```
      await mountTestApp();
```

      function overrideContext(path, value) {

        const rendererID = utils.getRendererID();

        // To simplify hydration and display of primitive context values (e.g. number, string)

        // the inspectElement() method wraps context in a {value: ...} object.

```
        path = ['value', ...path];
```

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'context',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideContext(['shallow'], 'updated');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideContext(['object', 'nested'], 'updated');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```

      overrideContext(['array', 1], 'updated');

      expect(committedContext).toStrictEqual({

```
        array: [1, 'updated', 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'updated',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    // Tests the combination of older frontend (DevTools UI) with newer backend (embedded within a renderer).

    it('should still support overriding context values with legacy backend methods', async () => {

```
      await mountTestApp();
```

      function overrideContext(path, value) {

        const rendererID = utils.getRendererID();

        // To simplify hydration and display of primitive context values (e.g. number, string)

        // the inspectElement() method wraps context in a {value: ...} object.

```
        path = ['value', ...path];
```

        bridge.send('overrideContext', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideContext(['object', 'nested'], 'updated');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'updated',
```
```
        },
```
```
        shallow: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should have editable paths', async () => {

```
      await mountTestApp();
```

      function renamePath(oldPath, newPath) {

        const rendererID = utils.getRendererID();

        // To simplify hydration and display of primitive context values (e.g. number, string)

        // the inspectElement() method wraps context in a {value: ...} object.

        oldPath = ['value', ...oldPath];

        newPath = ['value', ...newPath];

```
        bridge.send('renamePath', {
```
```
          id,
```
```
          oldPath,
```
```
          newPath,
```
```
          rendererID,
```
```
          type: 'context',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      renamePath(['shallow'], ['after']);

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```

      renamePath(['object', 'nested'], ['object', 'after']);

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          after: 'initial',
```
```
        },
```
```
        after: 'initial',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should enable adding new object properties and array values', async () => {

```
      await mountTestApp();
```

      function overrideContext(path, value) {

        const rendererID = utils.getRendererID();

        // To simplify hydration and display of primitive context values (e.g. number, string)

        // the inspectElement() method wraps context in a {value: ...} object.

```
        path = ['value', ...path];
```

        bridge.send('overrideValueAtPath', {

```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'context',
```
```
          value,
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```

      overrideContext(['new'], 'value');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideContext(['object', 'new'], 'value');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```

      overrideContext(['array', 3], 'new value');

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3, 'new value'],
```
```
        object: {
```
```
          nested: 'initial',
```
```
          new: 'value',
```
```
        },
```
```
        shallow: 'initial',
```
```
        new: 'value',
```
```
      });
```
```
    });
```
```
    // @reactVersion >= 16.9
```

    it('should have deletable keys', async () => {

```
      await mountTestApp();
```
```
      function deletePath(path) {
```

        const rendererID = utils.getRendererID();

        // To simplify hydration and display of primitive context values (e.g. number, string)

        // the inspectElement() method wraps context in a {value: ...} object.

```
        path = ['value', ...path];
```
```
        bridge.send('deletePath', {
```
```
          id,
```
```
          path,
```
```
          rendererID,
```
```
          type: 'context',
```
```
        });
```
```
        flushPendingUpdates();
```
```
      }
```
```
      deletePath(['shallow']);
```

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {
```
```
          nested: 'initial',
```
```
        },
```
```
      });
```

      deletePath(['object', 'nested']);

      expect(committedContext).toStrictEqual({

```
        array: [1, 2, 3],
```
```
        object: {},
```
```
      });
```
```
      deletePath(['array', 1]);
```

      expect(committedContext).toStrictEqual({

```
        array: [1, 3],
```
```
        object: {},
```
```
      });
```
```
    });
```
```
  });
```
```
});
```