fix: disallow updating custom node before validation (#931)

* fix: disallow updating custom node before validation

* fix: format

* fix: lint

* feat: add node switcher component tests

* fix: environment filter

apps/trading/pages/_app.page.tsx

@@ -1,6 +1,5 @@
 import type { AppProps } from 'next/app';
 import Head from 'next/head';
-import { useRouter } from 'next/router';
 import { Navbar } from '../components/navbar';
 import { t, ThemeContext, useThemeSwitcher } from '@vegaprotocol/react-helpers';
 import {
@@ -8,11 +7,7 @@ import {
   VegaManageDialog,
   VegaWalletProvider,
 } from '@vegaprotocol/wallet';
-import {
+import { EnvironmentProvider } from '@vegaprotocol/environment';
-  useEnvironment,
-  EnvironmentProvider,
-  NetworkSwitcherDialog,
-} from '@vegaprotocol/environment';
 import { Connectors } from '../lib/vega-connectors';
 import { ThemeSwitcher } from '@vegaprotocol/ui-toolkit';
 import { AppLoader } from '../components/app-loader';
@@ -21,9 +16,7 @@ import './styles.css';
 import { useGlobalStore } from '../stores';
 
 function AppBody({ Component, pageProps }: AppProps) {
-  const { push } = useRouter();
   const store = useGlobalStore();
-  const { VEGA_NETWORKS } = useEnvironment();
   const [theme, toggleTheme] = useThemeSwitcher();
 
   return (
@@ -61,15 +54,6 @@ function AppBody({ Component, pageProps }: AppProps) {
             dialogOpen={store.vegaWalletManageDialog}
             setDialogOpen={(open) => store.setVegaWalletManageDialog(open)}
           />
-          <NetworkSwitcherDialog
-            dialogOpen={store.vegaNetworkSwitcherDialog}
-            setDialogOpen={(open) => store.setVegaNetworkSwitcherDialog(open)}
-            onConnect={({ network }) => {
-              if (VEGA_NETWORKS[network]) {
-                push(VEGA_NETWORKS[network] ?? '');
-              }
-            }}
-          />
         </AppLoader>
       </div>
     </ThemeContext.Provider>

libs/environment/jest.config.js

@@ -6,4 +6,5 @@ module.exports = {
   },
   moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx'],
   coverageDirectory: '../../coverage/libs/environment',
+  setupFilesAfterEnv: ['./src/setup-tests.ts'],
 };

libs/environment/src/components/index.ts

@@ -1,5 +1,3 @@
 export * from './network-loader';
-export * from './network-switcher';
-export * from './network-switcher-dialog';
 export * from './node-switcher';
 export * from './node-switcher-dialog';

libs/environment/src/components/network-loader/network-loader.spec.tsx

@@ -0,0 +1,61 @@
+import type { ReactNode } from 'react';
+import { ApolloProvider } from '@apollo/client';
+import { useEnvironment } from '../../hooks';
+import { render, screen } from '@testing-library/react';
+import { NetworkLoader } from './network-loader';
+
+jest.mock('@apollo/client');
+jest.mock('../../hooks');
+
+// @ts-ignore Typescript doesn't recognise mocked instances
+ApolloProvider.mockImplementation(({ children }: { children: ReactNode }) => {
+  return children;
+});
+
+const SKELETON_TEXT = 'LOADING';
+const SUCCESS_TEXT = 'LOADED';
+
+const createClient = jest.fn();
+
+beforeEach(() => {
+  createClient.mockReset();
+  createClient.mockImplementation(() => {
+    return jest.fn();
+  });
+});
+
+describe('Network loader', () => {
+  it('renders a skeleton when there is no vega url in the environment', () => {
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useEnvironment.mockImplementation(() => ({
+      VEGA_URL: undefined,
+    }));
+
+    render(
+      <NetworkLoader skeleton={SKELETON_TEXT} createClient={createClient}>
+        {SUCCESS_TEXT}
+      </NetworkLoader>
+    );
+
+    expect(screen.getByText(SKELETON_TEXT)).toBeInTheDocument();
+    expect(() => screen.getByText(SUCCESS_TEXT)).toThrow();
+    expect(createClient).not.toHaveBeenCalled();
+  });
+
+  it('renders the child components wrapped in an apollo provider when the environment has a vega url', () => {
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useEnvironment.mockImplementation(() => ({
+      VEGA_URL: 'http://vega.node',
+    }));
+
+    render(
+      <NetworkLoader skeleton={SKELETON_TEXT} createClient={createClient}>
+        {SUCCESS_TEXT}
+      </NetworkLoader>
+    );
+
+    expect(() => screen.getByText(SKELETON_TEXT)).toThrow();
+    expect(screen.getByText(SUCCESS_TEXT)).toBeInTheDocument();
+    expect(createClient).toHaveBeenCalledWith('http://vega.node');
+  });
+});

libs/environment/src/components/network-switcher-dialog/index.tsx

@@ -1 +0,0 @@
-export { NetworkSwitcherDialog } from './network-switcher-dialog';

libs/environment/src/components/network-switcher-dialog/network-switcher-dialog.tsx

@@ -1,37 +0,0 @@
-import type { ComponentProps } from 'react';
-import { t } from '@vegaprotocol/react-helpers';
-import type { Intent } from '@vegaprotocol/ui-toolkit';
-import { Dialog } from '@vegaprotocol/ui-toolkit';
-import { NetworkSwitcher } from '../network-switcher';
-
-type NetworkSwitcherDialogProps = Pick<
-  ComponentProps<typeof NetworkSwitcher>,
-  'onConnect' | 'onError'
-> & {
-  dialogOpen: boolean;
-  setDialogOpen: (dialogOpen: boolean) => void;
-  intent?: Intent;
-};
-
-export const NetworkSwitcherDialog = ({
-  dialogOpen,
-  setDialogOpen,
-  intent,
-  onConnect,
-  onError,
-}: NetworkSwitcherDialogProps) => {
-  return (
-    <Dialog
-      open={dialogOpen}
-      onChange={setDialogOpen}
-      title={t('Choose a network')}
-      intent={intent}
-    >
-      <NetworkSwitcher
-        onConnect={onConnect}
-        onError={onError}
-        onClose={() => setDialogOpen(false)}
-      />
-    </Dialog>
-  );
-};

libs/environment/src/components/network-switcher/index.tsx

@@ -1 +0,0 @@
-export { NetworkSwitcher } from './network-switcher';

libs/environment/src/components/network-switcher/network-switcher.tsx

@@ -1,49 +0,0 @@
-import { useForm, Controller } from 'react-hook-form';
-import { Button, Select } from '@vegaprotocol/ui-toolkit';
-import { t } from '@vegaprotocol/react-helpers';
-import { useEnvironment } from '../../hooks';
-import type { Networks } from '../../types';
-
-type NetworkState = {
-  network: Networks;
-};
-
-type NetworkSwitcherProps = {
-  onConnect: (network: NetworkState) => void;
-  onError?: () => void;
-  onClose: () => void;
-};
-
-export const NetworkSwitcher = ({ onConnect }: NetworkSwitcherProps) => {
-  const { VEGA_ENV, VEGA_NETWORKS } = useEnvironment();
-  const { control, handleSubmit } = useForm<NetworkState>({
-    defaultValues: {
-      network: VEGA_ENV,
-    },
-  });
-
-  return (
-    <form onSubmit={handleSubmit(onConnect)}>
-      <div className="py-16">
-        <Controller
-          name="network"
-          control={control}
-          render={({ field }) => (
-            <Select value={field.value} onChange={field.onChange}>
-              {Object.keys(VEGA_NETWORKS).map((network, index) => (
-                <option key={index} value={network}>
-                  {network}
-                </option>
-              ))}
-            </Select>
-          )}
-        />
-      </div>
-      <div className="py-16">
-        <Button data-testid="connect-network" type="submit">
-          {t('Connect')}
-        </Button>
-      </div>
-    </form>
-  );
-};

libs/environment/src/components/node-switcher/node-switcher.spec.tsx

@@ -0,0 +1,668 @@
+import { useState } from 'react';
+import { MockedProvider } from '@apollo/react-testing';
+import { render, screen, fireEvent } from '@testing-library/react';
+import { useEnvironment } from '../../hooks/use-environment';
+import { useNodes } from '../../hooks/use-nodes';
+import createMockClient from '../../hooks/mocks/apollo-client';
+import { STATS_QUERY } from '../../utils/request-node';
+import { NodeSwitcher } from './node-switcher';
+import { getErrorByType } from '../../utils/validate-node';
+import type { Configuration, NodeData } from '../../';
+import { Networks, ErrorType, CUSTOM_NODE_KEY } from '../../';
+
+type NodeDataProp = 'responseTime' | 'block' | 'chain' | 'ssl';
+
+jest.mock('../../hooks/use-environment');
+jest.mock('../../hooks/use-nodes');
+
+const mockNodesImplementation =
+  (
+    updateNodeUrlMock: jest.Mock,
+    getNodeState: typeof getValidNodeState = getValidNodeState
+  ) =>
+  (config: Configuration) => {
+    const [{ state, clients }, setImplementation] = useState<{
+      state: Record<string, NodeData>;
+      clients: Record<string, ReturnType<typeof createMockClients>>;
+    }>({
+      state: createMockState(Networks.TESTNET, config.hosts),
+      clients: createMockClients(config.hosts),
+    });
+
+    return {
+      state,
+      clients,
+      updateNodeUrl: updateNodeUrlMock.mockImplementation(
+        (node: string, url: string) => {
+          setImplementation((prev) => ({
+            state: {
+              ...prev.state,
+              [node]: getNodeState(Networks.TESTNET, url),
+            },
+            clients: {
+              ...prev.clients,
+              [node]: createMockClient({ network: Networks.TESTNET }),
+            },
+          }));
+        }
+      ),
+      updateNodeBlock: (node: string, value: number) => {
+        setImplementation((prev) => ({
+          state: {
+            ...prev.state,
+            [node]: {
+              ...prev.state[node],
+              block: {
+                ...prev.state[node].block,
+                value,
+              },
+            },
+          },
+          clients: prev.clients,
+        }));
+      },
+    };
+  };
+
+const statsQueryMock = {
+  request: {
+    query: STATS_QUERY,
+  },
+  result: {
+    data: {
+      statistics: {
+        blockHeight: 1234,
+      },
+    },
+  },
+};
+
+const onConnect = jest.fn();
+
+const HOSTS = ['https://host1.com', 'https://host2.com'];
+
+const enum STATES {
+  LOADING = 'is loading',
+  HAS_ERROR = 'has an error',
+}
+
+const getValidNodeState = (env: Networks, url: string) => ({
+  url,
+  initialized: true,
+  responseTime: {
+    isLoading: false,
+    hasError: false,
+    value: 10,
+  },
+  block: {
+    isLoading: false,
+    hasError: false,
+    value: 123,
+  },
+  ssl: {
+    isLoading: false,
+    hasError: false,
+    value: true,
+  },
+  chain: {
+    isLoading: false,
+    hasError: false,
+    value: `${env.toLowerCase()}-1234`,
+  },
+});
+
+const createMockState = (env: Networks, nodes: string[]) =>
+  nodes.reduce(
+    (acc, node) => ({
+      ...acc,
+      [node]: getValidNodeState(env, node),
+    }),
+    {}
+  );
+
+const createMockClients = (nodes: string[]) =>
+  nodes.reduce(
+    (acc, node) => ({
+      ...acc,
+      [node]: createMockClient({ network: Networks.TESTNET }),
+    }),
+    {}
+  );
+
+beforeEach(() => {
+  onConnect.mockReset();
+
+  // @ts-ignore Typescript doesn't recognise mocked instances
+  useEnvironment.mockImplementation(() => ({
+    VEGA_ENV: Networks.TESTNET,
+    VEGA_URL: undefined,
+  }));
+
+  // @ts-ignore Typescript doesn't recognise mocked instances
+  useNodes.mockImplementation((config: Configuration) => ({
+    state: createMockState(Networks.TESTNET, config.hosts),
+    clients: createMockClients(config.hosts),
+    updateNodeUrl: jest.fn(),
+    updateNodeBlock: jest.fn(),
+  }));
+});
+
+describe('Node switcher', () => {
+  it('renders with empty config', () => {
+    render(<NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />);
+
+    expect(() => screen.getAllByTestId('node')).toThrow();
+    expect(screen.getByRole('radio', { checked: false })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+  });
+
+  it('renders with the provided config nodes', () => {
+    render(<NodeSwitcher config={{ hosts: HOSTS }} onConnect={onConnect} />);
+
+    HOSTS.forEach((host) => {
+      expect(
+        screen.getByRole('radio', { checked: false, name: host })
+      ).toBeInTheDocument();
+    });
+    expect(
+      screen.getByRole('radio', { checked: false, name: 'Other' })
+    ).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+  });
+
+  it('marks the node in the environment as selected', () => {
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useEnvironment.mockImplementation(() => ({
+      VEGA_ENV: Networks.TESTNET,
+      VEGA_URL: HOSTS[0],
+    }));
+    render(<NodeSwitcher config={{ hosts: HOSTS }} onConnect={onConnect} />);
+
+    HOSTS.forEach((host) => {
+      expect(
+        screen.getByRole('radio', { checked: host === HOSTS[0], name: host })
+      ).toBeInTheDocument();
+    });
+    expect(
+      screen.getByRole('radio', { checked: false, name: 'Other' })
+    ).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Connect' })).not.toHaveAttribute(
+      'disabled'
+    );
+  });
+
+  it.each`
+    dataProp          | state
+    ${'responseTime'} | ${STATES.LOADING}
+    ${'responseTime'} | ${STATES.HAS_ERROR}
+    ${'block'}        | ${STATES.LOADING}
+    ${'block'}        | ${STATES.HAS_ERROR}
+    ${'chain'}        | ${STATES.LOADING}
+    ${'chain'}        | ${STATES.HAS_ERROR}
+    ${'ssl'}          | ${STATES.LOADING}
+    ${'ssl'}          | ${STATES.HAS_ERROR}
+  `(
+    'disables selecting a node when the $dataProp $state',
+    ({ dataProp, state }: { dataProp: NodeDataProp; state: STATES }) => {
+      const mockUrl = 'https://host.url';
+      const mockConfig = {
+        hosts: [mockUrl],
+      };
+
+      // @ts-ignore Typescript doesn't recognise mocked instances
+      useNodes.mockImplementation((config: Configuration) => {
+        const nodeState = getValidNodeState(Networks.TESTNET, mockUrl);
+        return {
+          state: {
+            [mockUrl]: {
+              ...nodeState,
+              [dataProp]: {
+                ...nodeState[dataProp],
+                isLoading:
+                  state === STATES.LOADING
+                    ? true
+                    : nodeState[dataProp].isLoading,
+                hasError:
+                  state === STATES.HAS_ERROR
+                    ? true
+                    : nodeState[dataProp].hasError,
+                value: undefined,
+              },
+            },
+          },
+          clients: createMockClients(config.hosts),
+          updateNodeUrl: jest.fn(),
+          updateNodeBlock: jest.fn(),
+        };
+      });
+
+      render(
+        <MockedProvider mocks={[statsQueryMock]}>
+          <NodeSwitcher config={mockConfig} onConnect={onConnect} />
+        </MockedProvider>
+      );
+
+      expect(screen.getByRole('radio', { name: mockUrl })).toHaveAttribute(
+        'disabled'
+      );
+      expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+        'disabled'
+      );
+    }
+  );
+
+  it('disables selecting a node when it has an invalid url', () => {
+    const mockUrl = 'not-valid-url';
+    const mockConfig = {
+      hosts: [mockUrl],
+    };
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation((config: Configuration) => ({
+      state: {
+        [mockUrl]: getValidNodeState(Networks.TESTNET, mockUrl),
+      },
+      clients: createMockClients(config.hosts),
+      updateNodeUrl: jest.fn(),
+      updateNodeBlock: jest.fn(),
+    }));
+
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={mockConfig} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    expect(screen.getByRole('radio', { name: mockUrl })).toHaveAttribute(
+      'disabled'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+  });
+
+  it('disables selecting a node when it is on an incorrect network', () => {
+    const mockUrl = 'https://mock.url';
+    const mockConfig = {
+      hosts: [mockUrl],
+    };
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation((config: Configuration) => {
+      const nodeState = getValidNodeState(Networks.TESTNET, mockUrl);
+      return {
+        state: {
+          [mockUrl]: {
+            ...nodeState,
+            chain: {
+              ...nodeState.chain,
+              value: `some-network-id`,
+            },
+          },
+        },
+        clients: createMockClients(config.hosts),
+        updateNodeUrl: jest.fn(),
+        updateNodeBlock: jest.fn(),
+      };
+    });
+
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={mockConfig} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    expect(screen.getByRole('radio', { name: mockUrl })).toHaveAttribute(
+      'disabled'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+  });
+
+  it('allows connecting to a valid node', () => {
+    render(<NodeSwitcher config={{ hosts: HOSTS }} onConnect={onConnect} />);
+
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+    fireEvent.click(screen.getByRole('radio', { name: HOSTS[0] }));
+
+    expect(screen.getByRole('button', { name: 'Connect' })).not.toHaveAttribute(
+      'disabled'
+    );
+    fireEvent.click(screen.getByRole('button', { name: 'Connect' }));
+
+    expect(onConnect).toHaveBeenCalledWith(HOSTS[0]);
+  });
+
+  it('allows checking a custom node', () => {
+    const updateNodeUrlMock = jest.fn();
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation((config: Configuration) => ({
+      state: createMockState(Networks.TESTNET, config.hosts),
+      clients: createMockClients(config.hosts),
+      updateNodeUrl: updateNodeUrlMock,
+      updateNodeBlock: jest.fn(),
+    }));
+
+    const mockUrl = 'https://custom.url';
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.click(screen.getByRole('radio', { name: 'Other' }));
+    expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+      'aria-disabled',
+      'true'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.change(screen.getByRole('textbox'), {
+      target: {
+        value: mockUrl,
+      },
+    });
+
+    expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+      'aria-disabled',
+      'false'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.click(screen.getByRole('link', { name: 'Check' }));
+
+    expect(updateNodeUrlMock).toHaveBeenCalledWith(CUSTOM_NODE_KEY, mockUrl);
+  });
+
+  it('allows connecting to a custom node', () => {
+    const mockUrl = 'https://custom.url';
+    const updateNodeUrlMock = jest.fn();
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation(mockNodesImplementation(updateNodeUrlMock));
+
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.click(screen.getByRole('radio', { name: 'Other' }));
+    expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+      'aria-disabled',
+      'true'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.change(screen.getByRole('textbox'), {
+      target: {
+        value: mockUrl,
+      },
+    });
+
+    expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+      'aria-disabled',
+      'false'
+    );
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    fireEvent.click(screen.getByRole('link', { name: 'Check' }));
+
+    expect(screen.getByRole('button', { name: 'Connect' })).not.toHaveAttribute(
+      'disabled'
+    );
+    fireEvent.click(screen.getByRole('button', { name: 'Connect' }));
+
+    expect(onConnect).toHaveBeenCalledWith(mockUrl);
+  });
+
+  it.each`
+    dataProp          | state
+    ${'responseTime'} | ${STATES.LOADING}
+    ${'responseTime'} | ${STATES.HAS_ERROR}
+    ${'block'}        | ${STATES.LOADING}
+    ${'block'}        | ${STATES.HAS_ERROR}
+    ${'chain'}        | ${STATES.LOADING}
+    ${'chain'}        | ${STATES.HAS_ERROR}
+    ${'ssl'}          | ${STATES.LOADING}
+    ${'ssl'}          | ${STATES.HAS_ERROR}
+  `(
+    'disables selecting a custom node when the $dataProp $state',
+    ({ dataProp, state }: { dataProp: NodeDataProp; state: STATES }) => {
+      const mockUrl = 'https://custom.url';
+      const updateNodeUrlMock = jest.fn();
+
+      // @ts-ignore Typescript doesn't recognise mocked instances
+      useNodes.mockImplementation(
+        mockNodesImplementation(updateNodeUrlMock, (env) => {
+          const nodeState = getValidNodeState(env, mockUrl);
+          return {
+            ...nodeState,
+            [dataProp]: {
+              ...nodeState[dataProp],
+              isLoading:
+                state === STATES.LOADING ? true : nodeState[dataProp].isLoading,
+              hasError:
+                state === STATES.HAS_ERROR
+                  ? true
+                  : nodeState[dataProp].hasError,
+              value: undefined,
+            },
+          };
+        })
+      );
+
+      render(
+        <MockedProvider mocks={[statsQueryMock]}>
+          <NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />
+        </MockedProvider>
+      );
+
+      expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+        'disabled'
+      );
+
+      fireEvent.click(screen.getByRole('radio', { name: 'Other' }));
+      expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+        'aria-disabled',
+        'true'
+      );
+      expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+        'disabled'
+      );
+
+      fireEvent.change(screen.getByRole('textbox'), {
+        target: {
+          value: mockUrl,
+        },
+      });
+
+      expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+        'aria-disabled',
+        'false'
+      );
+      expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+        'disabled'
+      );
+
+      fireEvent.click(screen.getByRole('link', { name: 'Check' }));
+
+      if (state === STATES.LOADING) {
+        // eslint-disable-next-line jest/no-conditional-expect
+        expect(screen.getByRole('link', { name: 'Checking' })).toHaveAttribute(
+          'aria-disabled',
+          'true'
+        );
+      }
+
+      if (state === STATES.HAS_ERROR) {
+        // eslint-disable-next-line jest/no-conditional-expect
+        expect(screen.getByRole('link', { name: 'Check' })).toHaveAttribute(
+          'aria-disabled',
+          'false'
+        );
+      }
+
+      expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+        'disabled'
+      );
+
+      if (state === STATES.HAS_ERROR) {
+        const expectedErrorType =
+          dataProp === 'ssl' ? ErrorType.SSL_ERROR : ErrorType.CONNECTION_ERROR;
+        const error = getErrorByType(
+          expectedErrorType,
+          Networks.TESTNET,
+          mockUrl
+        );
+
+        // eslint-disable-next-line jest/no-conditional-expect
+        expect(error?.headline).not.toBeNull();
+        // eslint-disable-next-line jest/no-conditional-expect
+        expect(screen.getByText(error?.headline ?? '')).toBeInTheDocument();
+      }
+    }
+  );
+
+  it('disables selecting a custom node when it has an invalid url', () => {
+    const mockUrl = 'not-valid-url';
+    const updateNodeUrlMock = jest.fn();
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation(mockNodesImplementation(updateNodeUrlMock));
+
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    fireEvent.click(screen.getByRole('radio', { name: 'Other' }));
+    fireEvent.change(screen.getByRole('textbox'), {
+      target: {
+        value: mockUrl,
+      },
+    });
+    fireEvent.click(screen.getByRole('link', { name: 'Check' }));
+
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    const error = getErrorByType(
+      ErrorType.INVALID_URL,
+      Networks.TESTNET,
+      mockUrl
+    );
+
+    expect(error?.headline).not.toBeNull();
+    expect(screen.getByText(error?.headline ?? '')).toBeInTheDocument();
+  });
+
+  it('disables selecting a custom node when it is on an incorrect network', () => {
+    const mockUrl = 'https://mock.url';
+    const updateNodeUrlMock = jest.fn();
+
+    // @ts-ignore Typescript doesn't recognise mocked instances
+    useNodes.mockImplementation(
+      mockNodesImplementation(updateNodeUrlMock, (env, url) => {
+        const nodeState = getValidNodeState(env, url);
+        return {
+          ...nodeState,
+          chain: {
+            ...nodeState.chain,
+            value: 'network-chain-id',
+          },
+        };
+      })
+    );
+
+    render(
+      <MockedProvider mocks={[statsQueryMock]}>
+        <NodeSwitcher config={{ hosts: [] }} onConnect={onConnect} />
+      </MockedProvider>
+    );
+
+    fireEvent.click(screen.getByRole('radio', { name: 'Other' }));
+    fireEvent.change(screen.getByRole('textbox'), {
+      target: {
+        value: mockUrl,
+      },
+    });
+    fireEvent.click(screen.getByRole('link', { name: 'Check' }));
+
+    expect(screen.getByRole('button', { name: 'Connect' })).toHaveAttribute(
+      'disabled'
+    );
+
+    const error = getErrorByType(
+      ErrorType.INVALID_NETWORK,
+      Networks.TESTNET,
+      mockUrl
+    );
+
+    expect(error?.headline).not.toBeNull();
+    expect(screen.getByText(error?.headline ?? '')).toBeInTheDocument();
+  });
+
+  it.each`
+    description                                       | errorType
+    ${'the node has an invalid url'}                  | ${ErrorType.INVALID_URL}
+    ${'the node is on an invalid network'}            | ${ErrorType.INVALID_NETWORK}
+    ${'the node has an ssl issue'}                    | ${ErrorType.SSL_ERROR}
+    ${'the node cannot be reached'}                   | ${ErrorType.CONNECTION_ERROR}
+    ${'none of the config nodes can be connected to'} | ${ErrorType.CONNECTION_ERROR_ALL}
+    ${'the config cannot be loaded'}                  | ${ErrorType.CONFIG_LOAD_ERROR}
+    ${'the config is invalid'}                        | ${ErrorType.CONFIG_VALIDATION_ERROR}
+  `(
+    'displays initial error when $description',
+    ({ errorType }: { errorType: ErrorType }) => {
+      const mockEnvUrl = 'https://mock.url';
+
+      // @ts-ignore Typescript doesn't recognise mocked instances
+      useEnvironment.mockImplementation(() => ({
+        VEGA_ENV: Networks.TESTNET,
+        VEGA_URL: mockEnvUrl,
+      }));
+
+      render(
+        <NodeSwitcher
+          config={{ hosts: HOSTS }}
+          initialErrorType={errorType}
+          onConnect={onConnect}
+        />
+      );
+
+      const error = getErrorByType(errorType, Networks.TESTNET, mockEnvUrl);
+
+      expect(error?.headline).not.toBeNull();
+      expect(error?.message).not.toBeNull();
+      expect(screen.getByText(error?.headline ?? '')).toBeInTheDocument();
+      expect(screen.getByText(error?.message ?? '')).toBeInTheDocument();
+    }
+  );
+});

libs/environment/src/components/node-switcher/node-switcher.tsx

@@ -1,4 +1,4 @@
-import { useState, useMemo } from 'react';
+import { useState } from 'react';
 import { t } from '@vegaprotocol/react-helpers';
 import {
   RadioGroup,
@@ -55,14 +55,9 @@ export const NodeSwitcher = ({
   const [nodeRadio, setNodeRadio] = useState(
     getDefaultNode(config.hosts, VEGA_URL)
   );
-  const { state, clients, updateNodeUrl, updateNodeBlock } = useNodes(
+  const { state, clients, updateNodeUrl, updateNodeBlock } = useNodes(config);
-    VEGA_ENV,
+  const highestBlock = getHighestBlock(VEGA_ENV, state);
-    config
+
-  );
-  const highestBlock = useMemo(
-    () => getHighestBlock(VEGA_ENV, state),
-    [VEGA_ENV, state]
-  );
   const customUrl = state[CUSTOM_NODE_KEY]?.url;
 
   const onSubmit = (node: ReturnType<typeof getDefaultNode>) => {
@@ -71,12 +66,7 @@ export const NodeSwitcher = ({
     }
   };
 
-  const isSubmitDisabled = getIsFormDisabled(
+  const isSubmitDisabled = getIsFormDisabled(nodeRadio, VEGA_ENV, state);
-    nodeRadio,
-    customNodeText,
-    VEGA_ENV,
-    state
-  );
 
   const customNodeData =
     nodeRadio &&
@@ -94,7 +84,12 @@ export const NodeSwitcher = ({
   return (
     <div className="text-black dark:text-white w-full lg:min-w-[800px]">
       <NodeError {...(customNodeError || networkError)} />
-      <form onSubmit={() => onSubmit(nodeRadio)}>
+      <form
+        onSubmit={(event) => {
+          event.preventDefault();
+          onSubmit(nodeRadio);
+        }}
+      >
         <p className="text-body-large font-bold mt-16 mb-32">
           {t('Select a GraphQL node to connect to:')}
         </p>
@@ -124,7 +119,7 @@ export const NodeSwitcher = ({
                   highestBlock={highestBlock}
                   setBlock={(block) => updateNodeBlock(node, block)}
                 >
-                  <div className="mb-8 break-all">
+                  <div className="mb-8 break-all" data-testid="node">
                     <Radio
                       id={`node-url-${index}`}
                       labelClassName="whitespace-nowrap text-ellipsis overflow-hidden"
@@ -158,6 +153,7 @@ export const NodeSwitcher = ({
                     >
                       <Input
                         placeholder="https://"
+                        role="textbox"
                         value={customNodeText}
                         hasError={
                           !!customNodeText &&

libs/environment/src/hooks/use-environment.spec.tsx

@@ -121,17 +121,6 @@ beforeEach(() => {
 });
 
 afterAll(() => {
-  delete process.env['NX_VEGA_URL'];
-  delete process.env['NX_VEGA_ENV'];
-  delete process.env['NX_VEGA_CONFIG_URL'];
-  delete process.env['NX_VEGA_NETWORKS'];
-  delete process.env['NX_ETHEREUM_PROVIDER_URL'];
-  delete process.env['NX_ETHERSCAN_URL'];
-  delete process.env['NX_GIT_BRANCH'];
-  delete process.env['NX_GIT_ORIGIN_URL'];
-  delete process.env['NX_GIT_COMMIT_HASH'];
-  delete process.env['NX_GITHUB_FEEDBACK_URL'];
-
   jest.clearAllMocks();
 });
 

libs/environment/src/hooks/use-environment.tsx

@@ -12,7 +12,7 @@ import {
   getIsNodeLoading,
 } from '../utils/validate-node';
 import { ErrorType } from '../types';
-import type { Environment, RawEnvironment, NodeData } from '../types';
+import type { Environment, Networks, RawEnvironment, NodeData } from '../types';
 
 type EnvironmentProviderProps = {
   definitions?: Partial<RawEnvironment>;
@@ -26,8 +26,15 @@ export type EnvironmentState = Environment & {
 
 const EnvironmentContext = createContext({} as EnvironmentState);
 
-const hasFinishedLoading = (node: NodeData) =>
+const hasLoaded = (env: Networks, node: NodeData) =>
-  node.initialized && !getIsNodeLoading(node) && !node.verified;
+  node.initialized &&
+  !getIsNodeLoading(node) &&
+  getErrorType(env, node) === null;
+
+const hasFailedLoading = (env: Networks, node: NodeData) =>
+  node.initialized &&
+  !getIsNodeLoading(node) &&
+  getErrorType(env, node) !== null;
 
 export const EnvironmentProvider = ({
   definitions,
@@ -47,14 +54,14 @@ export const EnvironmentProvider = ({
       error && console.warn(error.headline);
     }
   });
-  const { state: nodes, clients } = useNodes(environment.VEGA_ENV, config);
+  const { state: nodes, clients } = useNodes(config);
   const nodeKeys = Object.keys(nodes);
 
   useEffect(() => {
     if (!environment.VEGA_URL) {
-      const successfulNodeKey = nodeKeys.find(
+      const successfulNodeKey = nodeKeys.find((key) =>
-        (key) => nodes[key].verified
+        hasLoaded(environment.VEGA_ENV, nodes[key])
-      ) as keyof typeof nodes;
+      );
       if (successfulNodeKey && nodes[successfulNodeKey]) {
         Object.keys(clients).forEach((node) => clients[node]?.stop());
         updateEnvironment((prevEnvironment) => ({
@@ -81,8 +88,9 @@ export const EnvironmentProvider = ({
     // if the config doesn't contain nodes the app can connect to
     if (
       nodeKeys.length > 0 &&
-      nodeKeys.filter((key) => hasFinishedLoading(nodes[key])).length ===
+      nodeKeys.filter((key) =>
-        nodeKeys.length
+        hasFailedLoading(environment.VEGA_ENV, nodes[key])
+      ).length === nodeKeys.length
     ) {
       Object.keys(clients).forEach((node) => clients[node]?.stop());
       setNetworkError(ErrorType.CONNECTION_ERROR_ALL);

libs/environment/src/hooks/use-nodes.spec.tsx

@@ -2,19 +2,16 @@ import { renderHook, act } from '@testing-library/react-hooks';
 import { ApolloClient } from '@apollo/client';
 import createClient from '../utils/apollo-client';
 import { useNodes } from './use-nodes';
-import { Networks } from '../types';
 import createMockClient, {
   getMockStatisticsResult,
 } from './mocks/apollo-client';
 
 jest.mock('../utils/apollo-client');
 
-const MOCK_ENV = Networks.DEVNET;
 const MOCK_DURATION = 1073;
 
 const initialState = {
   url: '',
-  verified: false,
   initialized: false,
   responseTime: {
     isLoading: false,
@@ -61,7 +58,7 @@ afterAll(() => {
 
 describe('useNodes hook', () => {
   it('returns the default state when empty config provided', () => {
-    const { result } = renderHook(() => useNodes(MOCK_ENV, { hosts: [] }));
+    const { result } = renderHook(() => useNodes({ hosts: [] }));
 
     expect(result.current.state).toEqual({});
   });
@@ -69,13 +66,12 @@ describe('useNodes hook', () => {
   it('sets loading state while waiting for the results', async () => {
     const node = 'https://some.url';
     const { result, waitForNextUpdate } = renderHook(() =>
-      useNodes(MOCK_ENV, { hosts: [node] })
+      useNodes({ hosts: [node] })
     );
 
     expect(result.current.state[node]).toEqual({
       ...initialState,
       url: node,
-      verified: false,
       initialized: true,
       responseTime: {
         ...initialState.responseTime,
@@ -101,9 +97,7 @@ describe('useNodes hook', () => {
   it('sets statistics results', async () => {
     const mockResult = getMockStatisticsResult();
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].block).toEqual({
@@ -128,9 +122,7 @@ describe('useNodes hook', () => {
 
   it('sets subscription result', async () => {
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].ssl).toEqual({
@@ -143,9 +135,7 @@ describe('useNodes hook', () => {
 
   it('sets error when host in not a valid url', async () => {
     const node = 'not-url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].block.hasError).toBe(true);
@@ -162,9 +152,7 @@ describe('useNodes hook', () => {
     );
 
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].block).toEqual({
@@ -194,9 +182,7 @@ describe('useNodes hook', () => {
     );
 
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].ssl).toEqual({
@@ -210,9 +196,7 @@ describe('useNodes hook', () => {
   it('allows updating block values', async () => {
     const mockResult = getMockStatisticsResult();
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].block.value).toEqual(
@@ -232,9 +216,7 @@ describe('useNodes hook', () => {
   it('does nothing when calling the block update on a non-existing node', async () => {
     const mockResult = getMockStatisticsResult();
     const node = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     await waitFor(() => {
       expect(result.current.state[node].block.value).toEqual(
@@ -251,9 +233,7 @@ describe('useNodes hook', () => {
 
   it('adds new node', async () => {
     const node = 'custom-node-key';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [] }));
-      useNodes(MOCK_ENV, { hosts: [] })
-    );
 
     expect(result.current.state[node]).toEqual(undefined);
 
@@ -269,9 +249,7 @@ describe('useNodes hook', () => {
   it('sets new url for node', async () => {
     const node = 'https://some.url';
     const newUrl = 'https://some-other.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [node] }));
-      useNodes(MOCK_ENV, { hosts: [node] })
-    );
 
     act(() => {
       result.current.updateNodeUrl(node, newUrl);
@@ -285,9 +263,7 @@ describe('useNodes hook', () => {
   it('sets error when custom node has an invalid url', async () => {
     const node = 'node-key';
     const url = 'not-url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [] }));
-      useNodes(MOCK_ENV, { hosts: [] })
-    );
 
     expect(result.current.state[node]).toBe(undefined);
 
@@ -312,9 +288,7 @@ describe('useNodes hook', () => {
 
     const node = 'node-key';
     const url = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [] }));
-      useNodes(MOCK_ENV, { hosts: [] })
-    );
 
     expect(result.current.state[node]).toBe(undefined);
 
@@ -351,9 +325,7 @@ describe('useNodes hook', () => {
 
     const node = 'node-key';
     const url = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [] }));
-      useNodes(MOCK_ENV, { hosts: [] })
-    );
 
     expect(result.current.state[node]).toBe(undefined);
 
@@ -374,7 +346,7 @@ describe('useNodes hook', () => {
     const url1 = 'https://some.url';
     const url2 = 'https://some-other.url';
     const { result, waitFor } = renderHook(() =>
-      useNodes(MOCK_ENV, { hosts: [url1, url2] })
+      useNodes({ hosts: [url1, url2] })
     );
 
     await waitFor(() => {
@@ -386,9 +358,7 @@ describe('useNodes hook', () => {
   it('exposes a client for the custom node', async () => {
     const node = 'node-key';
     const url = 'https://some.url';
-    const { result, waitFor } = renderHook(() =>
+    const { result, waitFor } = renderHook(() => useNodes({ hosts: [] }));
-      useNodes(MOCK_ENV, { hosts: [] })
-    );
 
     act(() => {
       result.current.updateNodeUrl(node, url);

libs/environment/src/hooks/use-nodes.tsx

@@ -3,8 +3,7 @@ import { useState, useEffect, useReducer } from 'react';
 import { produce } from 'immer';
 import type createClient from '../utils/apollo-client';
 import { initializeNode } from '../utils/initialize-node';
-import { getErrorType, getIsNodeLoading } from '../utils/validate-node';
+import type { NodeData, Configuration } from '../types';
-import type { NodeData, Configuration, Networks } from '../types';
 
 type StatisticsPayload = {
   block: NodeData['block']['value'];
@@ -59,7 +58,6 @@ function withError<T>(value?: T) {
 
 const getNodeData = (url?: string): NodeData => ({
   url: url ?? '',
-  verified: false,
   initialized: false,
   responseTime: withData(),
   block: withData(),
@@ -108,8 +106,7 @@ const initializeNodes = (
   );
 };
 
-const reducer =
+const reducer = (state: Record<string, NodeData>, action: Action) => {
-  (env: Networks) => (state: Record<string, NodeData>, action: Action) => {
   switch (action.type) {
     case ACTIONS.GET_STATISTICS:
       return produce(state, (state) => {
@@ -130,9 +127,6 @@ const reducer =
         state[action.node].responseTime = withData(
           action.payload?.responseTime
         );
-          state[action.node].verified =
-            !getIsNodeLoading(state[action.node]) &&
-            getErrorType(env, state[action.node]) === null;
       });
     case ACTIONS.GET_STATISTICS_FAILURE:
       return produce(state, (state) => {
@@ -154,9 +148,6 @@ const reducer =
       return produce(state, (state) => {
         if (!state[action.node]) return;
         state[action.node].ssl = withData(true);
-          state[action.node].verified =
-            !getIsNodeLoading(state[action.node]) &&
-            getErrorType(env, state[action.node]) === null;
       });
     case ACTIONS.CHECK_SUBSCRIPTION_FAILURE:
       return produce(state, (state) => {
@@ -187,9 +178,9 @@ const reducer =
   }
 };
 
-export const useNodes = (env: Networks, config?: Configuration) => {
+export const useNodes = (config?: Configuration) => {
   const [clients, setClients] = useState<ClientCollection>({});
-  const [state, dispatch] = useReducer(reducer(env), getInitialState(config));
+  const [state, dispatch] = useReducer(reducer, getInitialState(config));
   const configCacheKey = config?.hosts.join(';');
   const allUrls = Object.keys(state).map((node) => state[node].url);
 

libs/environment/src/setup-tests.ts

@@ -0,0 +1,8 @@
+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// allows you to do things like:
+// expect(element).toHaveTextContent(/react/i)
+// learn more: https://github.com/testing-library/jest-dom
+import '@testing-library/jest-dom';
+import ResizeObserver from 'resize-observer-polyfill';
+
+global.ResizeObserver = ResizeObserver;

libs/environment/src/types.ts

@@ -37,7 +37,6 @@ type NodeCheck<T> = {
 
 export type NodeData = {
   url: string;
-  verified: boolean;
   initialized: boolean;
   ssl: NodeCheck<boolean>;
   block: NodeCheck<number>;

libs/environment/src/utils/validate-node.tsx

@@ -1,5 +1,5 @@
 import { t } from '@vegaprotocol/react-helpers';
-import { CUSTOM_NODE_KEY, ErrorType } from '../types';
+import { ErrorType } from '../types';
 import type { Networks, NodeData } from '../types';
 
 export const getIsNodeLoading = (node?: NodeData): boolean => {
@@ -40,7 +40,6 @@ export const getIsNodeDisabled = (env: Networks, data?: NodeData) => {
 
 export const getIsFormDisabled = (
   currentNode: string | undefined,
-  inputText: string,
   env: Networks,
   state: Record<string, NodeData>
 ) => {
@@ -48,16 +47,8 @@ export const getIsFormDisabled = (
     return true;
   }
 
-  if (
-    currentNode === CUSTOM_NODE_KEY &&
-    state[CUSTOM_NODE_KEY] &&
-    inputText !== state[CUSTOM_NODE_KEY].url
-  ) {
-    return true;
-  }
-
   const data = state[currentNode];
-  return getIsNodeDisabled(env, data);
+  return data ? getIsNodeDisabled(env, data) : true;
 };
 
 export const getErrorByType = (

libs/environment/tsconfig.spec.json

@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "../../dist/out-tsc",
     "module": "commonjs",
-    "types": ["jest", "node"]
+    "types": ["jest", "node", "@testing-library/jest-dom"]
   },
   "include": [
     "**/*.test.ts",