Added a dedicated error for a situation when toHaveStyleRule receives an array

.changeset/silly-hornets-chew.md

@@ -0,0 +1,5 @@
+---
+'@emotion/jest': patch
+---
+
+Added a dedicated error for a situation when `toHaveStyleRule` receives an array.

package.json

@@ -23,7 +23,7 @@
     "flow": "flow",
     "flow:check": "flow check --flowconfig-name=.flowconfig-ci",
     "preinstall": "node ./scripts/ensure-yarn.js",
-    "postinstall": "opencollective postinstall && preconstruct dev && manypkg check",
+    "postinstall": "patch-package && opencollective postinstall && preconstruct dev && manypkg check",
     "changeset": "changeset",
     "version-packages": "changeset version",
     "release": "yarn build && changeset publish"
@@ -245,6 +245,7 @@
     "normalize.css": "^8.0.0",
     "npm-run-all": "^4.0.2",
     "opencollective": "^1.0.3",
+    "patch-package": "^6.4.7",
     "polished": "^1.2.1",
     "prettier": "^2.3.0",
     "raf": "^3.4.0",

packages/jest/src/matchers.js

@@ -45,6 +45,11 @@ function toHaveStyleRule(
   value: *,
   options?: { target?: string | RegExp, media?: string } = {}
 ) {
+  if (Array.isArray(received)) {
+    throw new Error(
+      '`toHaveStyleRule` expects to receive a single element but it received an array.'
+    )
+  }
   const { target, media } = options
   const classNames = getClassNamesFromNodes([received])
   const cssString = getStylesFromClassNames(classNames, getStyleElements())

packages/jest/test/matchers.test.js

@@ -301,6 +301,27 @@ describe('toHaveStyleRule', () => {
 
     expect(tree.children[0]).toHaveStyleRule('color', 'hotpink')
   })
+
+  it('should throw a friendly error when it receives an array', () => {
+    const tree = renderer
+      .create(
+        <>
+          <div
+            css={css`
+              color: hotpink;
+            `}
+          />
+          {'Some text'}
+        </>
+      )
+      .toJSON()
+
+    expect(() =>
+      expect(tree).toHaveStyleRule('color', 'hotpink')
+    ).toThrowErrorMatchingInlineSnapshot(
+      `"\`toHaveStyleRule\` expects to receive a single element but it received an array."`
+    )
+  })
   ;(isReact16 ? describe : describe.skip)('enzyme', () => {
     it('supports enzyme `mount` method', () => {
       const Component = () => (

patches/jest-cli++jest-snapshot+27.4.5.patch

@@ -0,0 +1,14 @@
+diff --git a/node_modules/jest-cli/node_modules/jest-snapshot/build/InlineSnapshots.js b/node_modules/jest-cli/node_modules/jest-snapshot/build/InlineSnapshots.js
+index 5f9c3d5..1ec2ce5 100644
+--- a/node_modules/jest-cli/node_modules/jest-snapshot/build/InlineSnapshots.js
++++ b/node_modules/jest-cli/node_modules/jest-snapshot/build/InlineSnapshots.js
+@@ -219,7 +219,8 @@ const saveSnapshotsForFile = (snapshots, sourceFilePath, prettier) => {
+     filename: sourceFilePath,
+     plugins,
+     presets,
+-    root: path.dirname(sourceFilePath)
++    // Jest 27-28 currently can't locate our `babel.config.js` correctly, see: https://github.com/facebook/jest/issues/11741
++    // root: path.dirname(sourceFilePath)
+   });
+
+   if (!ast) {

yarn.lock

@@ -6617,6 +6617,11 @@
   resolved "https://registry.npmjs.org/@xtuc/long/-/long-4.2.2.tgz#d291c6a4e97989b5c61d9acf396ae4fe133a718d"
   integrity sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==
 
+"@yarnpkg/lockfile@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@yarnpkg/lockfile/-/lockfile-1.1.0.tgz#e77a97fbd345b76d83245edcd17d393b1b41fb31"
+  integrity sha512-GpSwvyXOcOOlV70vbnzjj4fW5xW/FdUF6nQEt1ENy7m4ZCczi1+/buVUPAqmGfqznsORNFzUMjctTIp8a9tuCQ==
+
 JSONStream@^1.3.4, JSONStream@^1.3.5:
   version "1.3.5"
   resolved "https://registry.npmjs.org/JSONStream/-/JSONStream-1.3.5.tgz#3208c1f08d3a4d99261ab64f92302bc15e111ca0"
@@ -13805,6 +13810,13 @@ find-yarn-workspace-root2@1.2.16:
     micromatch "^4.0.2"
     pkg-dir "^4.2.0"
 
+find-yarn-workspace-root@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/find-yarn-workspace-root/-/find-yarn-workspace-root-2.0.0.tgz#f47fb8d239c900eb78179aa81b66673eac88f7bd"
+  integrity sha512-1IMnbjt4KzsQfnhnzNd8wUEgXZ44IzZaZmnLYx7D5FZlaHt2gW20Cri8Q+E/t5tIj4+epTBub+2Zxu/vNILzqQ==
+  dependencies:
+    micromatch "^4.0.2"
+
 flat-cache@^2.0.1:
   version "2.0.1"
   resolved "https://registry.npmjs.org/flat-cache/-/flat-cache-2.0.1.tgz#5d296d6f04bda44a4630a301413bdbc2ec085ec0"
@@ -19291,6 +19303,13 @@ kind-of@^6.0.0, kind-of@^6.0.2, kind-of@^6.0.3:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.3.tgz#07c05034a6c349fa06e24fa35aa76db4580ce4dd"
   integrity sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw==
 
+klaw-sync@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/klaw-sync/-/klaw-sync-6.0.0.tgz#1fd2cfd56ebb6250181114f0a581167099c2b28c"
+  integrity sha512-nIeuVSzdCCs6TDPTqI8w1Yre34sSq7AkZ4B3sfOBbI2CgVSB4Du4aLQijFU2+lhAFCwt9+42Hel6lQNIv6AntQ==
+  dependencies:
+    graceful-fs "^4.1.11"
+
 klaw@^1.0.0:
   version "1.3.1"
   resolved "https://registry.npmjs.org/klaw/-/klaw-1.3.1.tgz#4088433b46b3b1ba259d78785d8e96f73ba02439"
@@ -22592,7 +22611,7 @@ open@^6.2.0:
   dependencies:
     is-wsl "^1.1.0"
 
-open@^7.0.2, open@^7.0.3:
+open@^7.0.2, open@^7.0.3, open@^7.4.2:
   version "7.4.2"
   resolved "https://registry.yarnpkg.com/open/-/open-7.4.2.tgz#b8147e26dcf3e426316c730089fd71edd29c2321"
   integrity sha512-MVHddDVweXZF3awtlAS+6pgKLlm/JgxZ90+/NBurBoQctVOOB/zDdVjcyPzQ+0laDGbsWgrRkflI65sQeOgT9Q==
@@ -23362,6 +23381,25 @@ password-prompt@^1.0.4:
     ansi-escapes "^3.1.0"
     cross-spawn "^6.0.5"
 
+patch-package@^6.4.7:
+  version "6.4.7"
+  resolved "https://registry.yarnpkg.com/patch-package/-/patch-package-6.4.7.tgz#2282d53c397909a0d9ef92dae3fdeb558382b148"
+  integrity sha512-S0vh/ZEafZ17hbhgqdnpunKDfzHQibQizx9g8yEf5dcVk3KOflOfdufRXQX8CSEkyOQwuM/bNz1GwKvFj54kaQ==
+  dependencies:
+    "@yarnpkg/lockfile" "^1.1.0"
+    chalk "^2.4.2"
+    cross-spawn "^6.0.5"
+    find-yarn-workspace-root "^2.0.0"
+    fs-extra "^7.0.1"
+    is-ci "^2.0.0"
+    klaw-sync "^6.0.0"
+    minimist "^1.2.0"
+    open "^7.4.2"
+    rimraf "^2.6.3"
+    semver "^5.6.0"
+    slash "^2.0.0"
+    tmp "^0.0.33"
+
 path-browserify@0.0.1:
   version "0.0.1"
   resolved "https://registry.npmjs.org/path-browserify/-/path-browserify-0.0.1.tgz#e6c4ddd7ed3aa27c68a20cc4e50e1a4ee83bbc4a"