Enable and stabilise e2e tests for Swaps, add debouncing (#16326)

test/e2e/mock-e2e.js

@@ -189,19 +189,10 @@ async function setupMocking(server, testSpecificMock) {
       };
     });
 
+  // It disables loading of token icons, e.g. this URL: https://static.metaswap.codefi.network/api/v1/tokenIcons/1337/0x0000000000000000000000000000000000000000.png
   await server
     .forGet(
-      'https://static.metaswap.codefi.network/api/v1/tokenIcons/1337/0x0d8775f648430679a709e98d2b0cb6250d2887ef.png',
+      /^https:\/\/static\.metaswap\.codefi\.network\/api\/v1\/tokenIcons\/1337\/.*\.png/u,
-    )
-    .thenCallback(() => {
-      return {
-        statusCode: 200,
-      };
-    });
-
-  await server
-    .forGet(
-      'https://static.metaswap.codefi.network/api/v1/tokenIcons/1337/0x2efa2cb29c2341d8e5ba7d3262c9e9d6f1bf3711.png',
     )
     .thenCallback(() => {
       return {

test/e2e/run-all.js

@@ -51,8 +51,7 @@ async function main() {
   if (!snaps) {
     testPaths = [
       ...testPaths,
-      // TODO: Enable the next line once the Swaps E2E tests are stable.
+      ...(await getTestPathsForTestDir(path.join(__dirname, 'swaps'))),
-      // ...(await getTestPathsForTestDir(path.join(__dirname, 'swaps'))),
       path.join(__dirname, 'metamask-ui.spec.js'),
     ];
   }

test/e2e/swaps/shared.js

@@ -1,3 +1,5 @@
+const FixtureBuilder = require('../fixture-builder');
+
 const ganacheOptions = {
   accounts: [
     {
@@ -8,6 +10,11 @@ const ganacheOptions = {
   ],
 };
 
+const withFixturesOptions = {
+  fixtures: new FixtureBuilder().build(),
+  ganacheOptions,
+};
+
 const loadSwaps = async (driver) => {
   await driver.navigate();
   await driver.fill('#password', 'correct horse battery staple');
@@ -28,19 +35,37 @@ const buildQuote = async (driver, options) => {
   await driver.wait(async () => {
     const tokens = await driver.findElements('.searchable-item-list__item');
     return tokens.length > 1;
-  }, 10000);
+  });
   await driver.clickElement('.searchable-item-list__labels');
   await driver.clickElement('.dropdown-input-pair__to');
-  await driver.clickElement('[placeholder="Search name or paste address"]');
+  await driver.clickElement('input[data-testid="search-list-items"]');
   await driver.fill(
-    '[placeholder="Search name or paste address"]',
+    'input[data-testid="search-list-items"]',
-    options.swapTo,
+    options.swapTo || options.swapToContractAddress,
   );
+  if (options.swapTo) {
+    await driver.wait(async () => {
+      const tokenNames = await driver.findElements(
+        '.searchable-item-list__primary-label',
+      );
+      if (tokenNames.length === 0) {
+        return false;
+      }
+      const tokenName = await tokenNames[0].getText();
+      return tokenName === options.swapTo;
+    });
+  }
+  if (options.swapToContractAddress) {
+    await driver.waitForSelector({
+      css: '.searchable-item-list__item button.btn-primary',
+      text: 'Import',
+    });
+  }
   await driver.clickElement('.searchable-item-list__primary-label');
 };
 
 module.exports = {
-  ganacheOptions,
+  withFixturesOptions,
   loadSwaps,
   buildQuote,
 };

test/e2e/swaps/swap-eth.spec.js

@@ -1,16 +1,13 @@
 const { strict: assert } = require('assert');
 
 const { withFixtures } = require('../helpers');
-const FixtureBuilder = require('../fixture-builder');
+const { withFixturesOptions, loadSwaps, buildQuote } = require('./shared');
-const { ganacheOptions, loadSwaps, buildQuote } = require('./shared');
 
 describe('Swap Eth for another Token', function () {
   it('Completes a Swap between Eth and Matic', async function () {
     await withFixtures(
       {
-        fixtures: new FixtureBuilder().build(),
+        ...withFixturesOptions,
-        ganacheOptions,
-        failOnConsoleError: false,
         title: this.test.title,
       },
       async ({ driver }) => {

test/e2e/swaps/swaps-notifications.spec.js

@@ -1,16 +1,14 @@
 const { strict: assert } = require('assert');
 
 const { withFixtures } = require('../helpers');
-const FixtureBuilder = require('../fixture-builder');
+
-const { ganacheOptions, loadSwaps, buildQuote } = require('./shared');
+const { withFixturesOptions, loadSwaps, buildQuote } = require('./shared');
 
 describe('Swaps - notifications', function () {
   it('tests notifications for verified token on 1 source and price difference', async function () {
     await withFixtures(
       {
-        fixtures: new FixtureBuilder().build(),
+        ...withFixturesOptions,
-        ganacheOptions,
-        failOnConsoleError: false,
         title: this.test.title,
       },
       async ({ driver }) => {
@@ -46,19 +44,52 @@ describe('Swaps - notifications', function () {
     );
   });
 
+  it('tests a notification for not enough balance', async function () {
+    await withFixtures(
+      {
+        ...withFixturesOptions,
+        title: this.test.title,
+      },
+      async ({ driver }) => {
+        await loadSwaps(driver);
+        await buildQuote(driver, {
+          amount: 50,
+          swapTo: 'USDC',
+        });
+        const reviewSwapButton = await driver.findElement(
+          '[data-testid="page-container-footer-next"]',
+        );
+        assert.equal(await reviewSwapButton.getText(), 'Review swap');
+        assert.equal(await reviewSwapButton.isEnabled(), true);
+        await reviewSwapButton.click();
+        await driver.waitForSelector({
+          css: '[class*="box--align-items-center"]',
+          text: 'Estimated gas fee',
+        });
+        await driver.waitForSelector({
+          css: '[class*="actionable-message__message"]',
+          text: 'You need 43.4467 more TESTETH to complete this swap',
+        });
+        const swapButton = await driver.findElement(
+          '[data-testid="page-container-footer-next"]',
+        );
+        assert.equal(await swapButton.getText(), 'Swap');
+        assert.equal(await swapButton.isEnabled(), false);
+      },
+    );
+  });
+
   it('tests notifications for verified token on 0 sources and high slippage', async function () {
     await withFixtures(
       {
-        fixtures: new FixtureBuilder().build(),
+        ...withFixturesOptions,
-        ganacheOptions,
-        failOnConsoleError: false,
         title: this.test.title,
       },
       async ({ driver }) => {
         await loadSwaps(driver);
         await buildQuote(driver, {
           amount: 2,
-          swapTo: '0x72c9Fb7ED19D3ce51cea5C56B3e023cd918baaDf',
+          swapToContractAddress: '0x72c9Fb7ED19D3ce51cea5C56B3e023cd918baaDf',
         });
         await driver.waitForSelector({
           css: '.popover-header__title',
@@ -96,41 +127,4 @@ describe('Swaps - notifications', function () {
       },
     );
   });
-
-  it('tests a notification for not enough balance', async function () {
-    await withFixtures(
-      {
-        fixtures: new FixtureBuilder().build(),
-        ganacheOptions,
-        failOnConsoleError: false,
-        title: this.test.title,
-      },
-      async ({ driver }) => {
-        await loadSwaps(driver);
-        await buildQuote(driver, {
-          amount: 50,
-          swapTo: 'USDC',
-        });
-        const reviewSwapButton = await driver.findElement(
-          '[data-testid="page-container-footer-next"]',
-        );
-        assert.equal(await reviewSwapButton.getText(), 'Review swap');
-        assert.equal(await reviewSwapButton.isEnabled(), true);
-        await reviewSwapButton.click();
-        await driver.waitForSelector({
-          css: '[class*="box--align-items-center"]',
-          text: 'Estimated gas fee',
-        });
-        await driver.waitForSelector({
-          css: '[class*="actionable-message__message"]',
-          text: 'You need 43.4467 more TESTETH to complete this swap',
-        });
-        const swapButton = await driver.findElement(
-          '[data-testid="page-container-footer-next"]',
-        );
-        assert.equal(await swapButton.getText(), 'Swap');
-        assert.equal(await swapButton.isEnabled(), false);
-      },
-    );
-  });
 });

test/jest/index.js

@@ -1,4 +1,4 @@
-export { screen, fireEvent } from '@testing-library/react';
+export { screen, fireEvent, waitFor } from '@testing-library/react';
 export { createSwapsMockStore } from './mock-store';
 export { renderWithProvider } from './rendering';
 export { setBackgroundConnection } from './background';

ui/pages/swaps/fee-card/fee-card.js

@@ -192,5 +192,5 @@ FeeCard.propTypes = {
   onQuotesClick: PropTypes.func.isRequired,
   numberOfQuotes: PropTypes.number.isRequired,
   chainId: PropTypes.string.isRequired,
-  isBestQuote: PropTypes.bool.isRequired,
+  isBestQuote: PropTypes.bool,
 };

ui/pages/swaps/import-token/import-token.js

@@ -67,7 +67,7 @@ export default function ImportToken({
           fontWeight={FONT_WEIGHT.BOLD}
           boxProps={{ marginTop: 2, marginBottom: 3 }}
         >
-          {tokenForImport.name}
+          {tokenForImport.name || ''}
         </Typography>
         <Typography variant={TYPOGRAPHY.H6}>{t('contract')}:</Typography>
         <Typography
@@ -75,7 +75,7 @@ export default function ImportToken({
           variant={TYPOGRAPHY.H7}
           boxProps={{ marginBottom: 6 }}
         >
-          {tokenForImport.address}
+          {tokenForImport.address || ''}
         </Typography>
       </Box>
     </Popover>

ui/pages/swaps/searchable-item-list/list-item-search/list-item-search.component.js

@@ -17,6 +17,8 @@ const renderAdornment = () => (
   </InputAdornment>
 );
 
+let timeoutIdForSearch;
+
 export default function ListItemSearch({
   onSearch,
   error,
@@ -37,7 +39,6 @@ export default function ListItemSearch({
    * @param {string} contractAddress
    */
   const handleSearchTokenForImport = async (contractAddress) => {
-    setSearchQuery(contractAddress);
     try {
       const token = await fetchToken(contractAddress, chainId);
       if (token) {
@@ -60,22 +61,32 @@ export default function ListItemSearch({
   };
 
   const handleSearch = async (newSearchQuery) => {
-    const trimmedNewSearchQuery = newSearchQuery.trim();
-    const validHexAddress = isValidHexAddress(trimmedNewSearchQuery);
-    const fuseSearchResult = fuseRef.current.search(newSearchQuery);
-    const results =
-      defaultToAll && newSearchQuery === '' ? listToSearch : fuseSearchResult;
-    if (shouldSearchForImports && results.length === 0 && validHexAddress) {
-      await handleSearchTokenForImport(trimmedNewSearchQuery);
-      return;
-    }
     setSearchQuery(newSearchQuery);
-    onSearch({
+    if (timeoutIdForSearch) {
-      searchQuery: newSearchQuery,
+      clearTimeout(timeoutIdForSearch);
-      results,
+    }
-    });
+    timeoutIdForSearch = setTimeout(async () => {
+      timeoutIdForSearch = null;
+      const trimmedNewSearchQuery = newSearchQuery.trim();
+      const validHexAddress = isValidHexAddress(trimmedNewSearchQuery);
+      const fuseSearchResult = fuseRef.current.search(newSearchQuery);
+      const results =
+        defaultToAll && newSearchQuery === '' ? listToSearch : fuseSearchResult;
+      if (shouldSearchForImports && results.length === 0 && validHexAddress) {
+        await handleSearchTokenForImport(trimmedNewSearchQuery);
+        return;
+      }
+      onSearch({
+        searchQuery: newSearchQuery,
+        results,
+      });
+    }, 350);
   };
 
+  useEffect(() => {
+    return () => clearTimeout(timeoutIdForSearch);
+  }, []);
+
   useEffect(() => {
     if (!fuseRef.current) {
       fuseRef.current = new Fuse(listToSearch, {
@@ -128,6 +139,6 @@ ListItemSearch.propTypes = {
   searchPlaceholderText: PropTypes.string,
   defaultToAll: PropTypes.bool,
   shouldSearchForImports: PropTypes.bool,
-  searchQuery: PropTypes.func,
+  searchQuery: PropTypes.string,
   setSearchQuery: PropTypes.func,
 };

ui/pages/swaps/searchable-item-list/list-item-search/list-item-search.component.test.js

@@ -74,6 +74,7 @@ describe('ListItemSearch', () => {
   });
 
   it('changes the search query', () => {
+    jest.useFakeTimers();
     const store = configureMockStore(middleware)(createSwapsMockStore());
     const props = createProps();
     const { getByTestId } = renderWithProvider(
@@ -82,6 +83,7 @@ describe('ListItemSearch', () => {
     );
     const input = getByTestId('search-list-items');
     fireEvent.change(input, { target: { value: 'USD' } });
+    jest.runAllTimers();
     expect(props.setSearchQuery).toHaveBeenCalledWith('USD');
     expect(props.onSearch).toHaveBeenCalledWith({
       searchQuery: 'USD',
@@ -90,6 +92,7 @@ describe('ListItemSearch', () => {
   });
 
   it('imports a token', async () => {
+    jest.useFakeTimers();
     const store = configureMockStore(middleware)(createSwapsMockStore());
     const props = createProps({ shouldSearchForImports: true });
     const { getByTestId } = renderWithProvider(
@@ -98,6 +101,7 @@ describe('ListItemSearch', () => {
     );
     const input = getByTestId('search-list-items');
     await fireEvent.change(input, { target: { value: token.address } });
+    await jest.runAllTimers();
     expect(props.setSearchQuery).toHaveBeenCalledWith(token.address);
     expect(props.onSearch).toHaveBeenCalledWith({
       searchQuery: token.address,

ui/pages/swaps/searchable-item-list/searchable-item-list.js

@@ -93,6 +93,6 @@ SearchableItemList.propTypes = {
   hideItemIf: PropTypes.func,
   listContainerClassName: PropTypes.string,
   shouldSearchForImports: PropTypes.bool,
-  searchQuery: PropTypes.func,
+  searchQuery: PropTypes.string,
   setSearchQuery: PropTypes.func,
 };

ui/pages/swaps/view-quote/view-quote.js

@@ -741,7 +741,7 @@ export default function ViewQuote() {
   const priceSlippageUnknownFiatValue =
     !priceSlippageFromSource ||
     !priceSlippageFromDestination ||
-    usedQuote?.priceSlippage?.calculationError;
+    Boolean(usedQuote?.priceSlippage?.calculationError);
 
   let priceDifferencePercentage = 0;
   if (usedQuote?.priceSlippage?.ratio) {
@@ -1038,7 +1038,7 @@ export default function ViewQuote() {
         }
         hideCancel
         disabled={isSwapButtonDisabled}
-        className={isShowingWarning && 'view-quote__thin-swaps-footer'}
+        className={isShowingWarning ? 'view-quote__thin-swaps-footer' : ''}
         showTopBorder
       />
     </div>