Implement expect().toEqual() (#47697)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/47697

Changelog: [internal]

Implements `expect(received).toEqual(expected)` in Fantom tests.

Reviewed By: sammy-SC

Differential Revision: D66108539

fbshipit-source-id: 4e1d2405064900ec9859220fb6a28ec25a5176f3

flow-typed/npm/deep-equal_v1.x.x.js

@@ -0,0 +1,17 @@
+/**
+ * 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
+ * @format
+ */
+
+declare module 'deep-equal' {
+  declare module.exports: (
+    actual: mixed,
+    expected: mixed,
+    options?: {strict: boolean},
+  ) => boolean;
+}

jest/integration/runtime/setup.js

@@ -9,6 +9,7 @@
  * @oncall react_native
  */
 
+import deepEqual from 'deep-equal';
 import nullthrows from 'nullthrows';
 
 export type TestCaseResult = {
@@ -187,6 +188,15 @@ class Expect {
     return this;
   }
 
+  toEqual(expected: mixed): void {
+    const pass = deepEqual(this.#received, expected, {strict: true});
+    if (!this.#isExpectedResult(pass)) {
+      throw new Error(
+        `Expected${this.#maybeNotLabel()} to equal ${String(expected)} but received ${String(this.#received)}.`,
+      );
+    }
+  }
+
   toBe(expected: mixed): void {
     const pass = this.#received === expected;
     if (!this.#isExpectedResult(pass)) {

package.json

@@ -61,6 +61,7 @@
     "chalk": "^4.0.0",
     "clang-format": "^1.8.0",
     "connect": "^3.6.5",
+    "deep-equal": "1.1.1",
     "eslint": "^8.57.0",
     "eslint-config-prettier": "^8.5.0",
     "eslint-plugin-babel": "^5.3.1",

yarn.lock

@@ -3563,6 +3563,18 @@ dedent@^1.0.0:
   resolved "https://registry.yarnpkg.com/dedent/-/dedent-1.5.3.tgz#99aee19eb9bae55a67327717b6e848d0bf777e5a"
   integrity sha512-NHQtfOOW68WD8lgypbLA5oT+Bt0xXJhiYvoR6SmmNXZfpzOGXwdKWmcwG8N7PwVVWV3eF/68nmD9BaJSsTBhyQ==
 
+deep-equal@1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-1.1.1.tgz#b5c98c942ceffaf7cb051e24e1434a25a2e6076a"
+  integrity sha512-yd9c5AdiqVcR+JjcwUQb9DkhJc8ngNr0MahEBGvDiJw8puWab2yZlh+nkasOnZP+EGTAP6rRp2JzJhJZzvNF8g==
+  dependencies:
+    is-arguments "^1.0.4"
+    is-date-object "^1.0.1"
+    is-regex "^1.0.4"
+    object-is "^1.0.1"
+    object-keys "^1.1.1"
+    regexp.prototype.flags "^1.2.0"
+
 deep-equal@^2.0.5:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/deep-equal/-/deep-equal-2.2.3.tgz#af89dafb23a396c7da3e862abc0be27cf51d56e1"
@@ -5069,7 +5081,7 @@ invariant@^2.2.4:
   dependencies:
     loose-envify "^1.0.0"
 
-is-arguments@^1.1.1:
+is-arguments@^1.0.4, is-arguments@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/is-arguments/-/is-arguments-1.1.1.tgz#15b3f88fda01f2a97fec84ca761a560f123efa9b"
   integrity sha512-8Q7EARjzEnKpt/PCD7e1cgUS0a6X8u5tdSiMqXhojOdoV9TsMsiO+9VLC5vAmO8N7/GmXn7yjR8qnA6bVAEzfA==
@@ -5264,7 +5276,7 @@ is-plain-object@^5.0.0:
   resolved "https://registry.yarnpkg.com/is-plain-object/-/is-plain-object-5.0.0.tgz#4427f50ab3429e9025ea7d52e9043a9ef4159344"
   integrity sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==
 
-is-regex@^1.1.4:
+is-regex@^1.0.4, is-regex@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.4.tgz#eef5663cd59fa4c0ae339505323df6854bb15958"
   integrity sha512-kvRdxDsxZjhzUX07ZnLydzS1TU/TJlTUHHY4YLL87e37oUA49DfkLqgy+VjFocowy29cKvcSiu+kIv728jTTVg==
@@ -6861,7 +6873,7 @@ object-inspect@^1.13.1:
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.13.2.tgz#dea0088467fb991e67af4058147a24824a3043ff"
   integrity sha512-IRZSRuzJiynemAXPYtPe5BoI/RESNYR7TYm50MC5Mqbd3Jmw5y790sErYw3V6SryFJD64b74qQQs9wn5Bg/k3g==
 
-object-is@^1.1.5:
+object-is@^1.0.1, object-is@^1.1.5:
   version "1.1.6"
   resolved "https://registry.yarnpkg.com/object-is/-/object-is-1.1.6.tgz#1a6a53aed2dd8f7e6775ff870bea58545956ab07"
   integrity sha512-F8cZ+KfGlSGi09lJT7/Nd6KJZ9ygtvYC0/UYYLI9nmQKLMnydpB9yvbv9K1uSkEu7FU9vYPmVwLg328tX+ot3Q==
@@ -7504,6 +7516,16 @@ regenerator-transform@^0.15.2:
   dependencies:
     "@babel/runtime" "^7.8.4"
 
+regexp.prototype.flags@^1.2.0:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/regexp.prototype.flags/-/regexp.prototype.flags-1.5.3.tgz#b3ae40b1d2499b8350ab2c3fe6ef3845d3a96f42"
+  integrity sha512-vqlC04+RQoFalODCbCumG2xIOvapzVMHwsyIGM/SIE8fRhFFsXeH8/QQ+s0T0kDAhKc4k30s73/0ydkHQz6HlQ==
+  dependencies:
+    call-bind "^1.0.7"
+    define-properties "^1.2.1"
+    es-errors "^1.3.0"
+    set-function-name "^2.0.2"
+
 regexp.prototype.flags@^1.5.1, regexp.prototype.flags@^1.5.2:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/regexp.prototype.flags/-/regexp.prototype.flags-1.5.2.tgz#138f644a3350f981a858c44f6bb1a61ff59be334"