Add tests for console.table

Summary:
Changelog: [internal]

Added basic tests for the current implementation of the `console.table` polyfill (not the CDP implementation).

Differential Revision: D67791579

packages/polyfills/__tests__/console-itest.js

@@ -0,0 +1,163 @@
+/**
+ * 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 strict-local
+ * @format
+ * @oncall react_native
+ */
+
+const LOG_LEVELS = {
+  trace: 0,
+  info: 1,
+  warn: 2,
+  error: 3,
+};
+
+describe('console', () => {
+  describe('.table(data, rows)', () => {
+    it('should print the passed array as a table', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table([
+          {name: 'First', value: 500},
+          {name: 'Second', value: 600},
+          {name: 'Third', value: 700},
+          {name: 'Fourth', value: 800, extraValue: true},
+        ]);
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([
+          `
+name   | value
+-------|------
+First  | 500 \u0020
+Second | 600 \u0020
+Third  | 700 \u0020
+Fourth | 800  `,
+          LOG_LEVELS.info,
+        ]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+
+    it('should print the passed dictionary as a table', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table({
+          first: {name: 'First', value: 500},
+          second: {name: 'Second', value: 600},
+          third: {name: 'Third', value: 700},
+          fourth: {name: 'Fourth', value: 800, extraValue: true},
+        });
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([
+          `
+(index) | name   | value
+--------|--------|------
+first   | First  | 500 \u0020
+second  | Second | 600 \u0020
+third   | Third  | 700 \u0020
+fourth  | Fourth | 800  `,
+          LOG_LEVELS.info,
+        ]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+
+    it('should print an empty string for empty arrays', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table([]);
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([``, LOG_LEVELS.info]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+
+    it('should print an empty string for empty dictionaries', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table({});
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([``, LOG_LEVELS.info]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+
+    // This test is currently failing
+    it.skip('should print an indices table for an array of empty objects', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table([{}, {}, {}, {}]);
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([
+          `
+(index)
+-------
+0     \u0020
+1     \u0020
+2     \u0020
+3      `,
+          LOG_LEVELS.info,
+        ]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+
+    it('should print an indices table for a dictionary of empty objects', () => {
+      const originalNativeLoggingHook = global.nativeLoggingHook;
+      const logFn = (global.nativeLoggingHook = jest.fn());
+
+      // TODO: replace with `beforeEach` when supported.
+      try {
+        console.table({
+          first: {},
+          second: {},
+          third: {},
+          fourth: {},
+        });
+
+        expect(logFn).toHaveBeenCalledTimes(1);
+        expect(logFn.mock.lastCall).toEqual([
+          `
+(index)
+-------
+first \u0020
+second\u0020
+third \u0020
+fourth `,
+          LOG_LEVELS.info,
+        ]);
+      } finally {
+        global.nativeLoggingHook = originalNativeLoggingHook;
+      }
+    });
+  });
+});

packages/react-native-fantom/config/jest.config.js

@@ -19,6 +19,7 @@ module.exports = {
   roots: [
     '<rootDir>/packages/react-native',
     '<rootDir>/packages/react-native-fantom',
+    '<rootDir>/packages/polyfills',
   ],
   moduleFileExtensions: [...baseConfig.moduleFileExtensions, 'cpp', 'h'],
   // This allows running Meta-internal tests with the `-test.fb.js` suffix.