From 3206df25eee0a60c30d381da0d3dc08ce6929623 Mon Sep 17 00:00:00 2001
From: Hiroshi Nishijima <hnisiji@gmail.com>
Date: Tue, 15 Jun 2021 23:13:28 +0900
Subject: [PATCH 1/3] Relaxed the validation to allow multibyte strings

---
 packages/jest-each/src/validation.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/jest-each/src/validation.ts b/packages/jest-each/src/validation.ts
index 3355023150ff..52238ed53283 100644
--- a/packages/jest-each/src/validation.ts
+++ b/packages/jest-each/src/validation.ts
@@ -77,7 +77,7 @@ const pluralize = (word: string, count: number) =>
 
 const START_OF_LINE = '^';
 const NEWLINE = '\\n';
-const HEADING = '\\s*\\w+\\s*';
+const HEADING = '\\s*[^\\s]+\\s*';
 const PIPE = '\\|';
 const REPEATABLE_HEADING = `(${PIPE}${HEADING})*`;
 const HEADINGS_FORMAT = new RegExp(

From ba46bd3f0aa1b51bf21bc48d9b3d39b2962db874 Mon Sep 17 00:00:00 2001
From: Hiroshi Nishijima <hnisiji@gmail.com>
Date: Sun, 22 Aug 2021 11:59:49 +0900
Subject: [PATCH 2/3] Added test cases to check support multibyte characters

---
 .../jest-each/src/__tests__/template.test.ts  | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/packages/jest-each/src/__tests__/template.test.ts b/packages/jest-each/src/__tests__/template.test.ts
index 5fc5d657d780..f39031840f93 100644
--- a/packages/jest-each/src/__tests__/template.test.ts
+++ b/packages/jest-each/src/__tests__/template.test.ts
@@ -70,6 +70,26 @@ describe('jest-each', () => {
         expect(testCallBack).not.toHaveBeenCalled();
       });
 
+      test('does not throw error when there are multibyte characters in first column headings', () => {
+        const globalTestMocks = getGlobalTestMocks();
+        const eachObject = each.withGlobal(globalTestMocks)`
+         ʅ(ツ)ʃ  | b    | expected
+          ${1}          | ${1} | ${2}
+        `;
+        const testFunction = get(eachObject, keyPath);
+        const testCallBack = jest.fn();
+        testFunction('accept multibyte characters', testCallBack);
+
+        const globalMock = get(globalTestMocks, keyPath);
+
+        expect(() => globalMock.mock.calls[0][1]()).not.toThrowError();
+        expect(testCallBack).toHaveBeenCalledWith({
+          b: 1,
+          expected: 2,
+          'ʅ(ツ)ʃ': 1,
+        });
+      });
+
       test('throws error when there are additional words in second column heading', () => {
         const globalTestMocks = getGlobalTestMocks();
         const eachObject = each.withGlobal(globalTestMocks)`
@@ -88,6 +108,26 @@ describe('jest-each', () => {
         expect(testCallBack).not.toHaveBeenCalled();
       });
 
+      test('does not throw error when there are multibyte characters in second column headings', () => {
+        const globalTestMocks = getGlobalTestMocks();
+        const eachObject = each.withGlobal(globalTestMocks)`
+          a    | ☝(ʕ⊙ḕ⊙ʔ)☝  | expected
+          ${1} | ${1}           | ${2}
+        `;
+        const testFunction = get(eachObject, keyPath);
+        const testCallBack = jest.fn();
+        testFunction('accept multibyte characters', testCallBack);
+
+        const globalMock = get(globalTestMocks, keyPath);
+
+        expect(() => globalMock.mock.calls[0][1]()).not.toThrowError();
+        expect(testCallBack).toHaveBeenCalledWith({
+          a: 1,
+          expected: 2,
+          '☝(ʕ⊙ḕ⊙ʔ)☝': 1,
+        });
+      });
+
       test('throws error when there are additional words in last column heading', () => {
         const globalTestMocks = getGlobalTestMocks();
         const eachObject = each.withGlobal(globalTestMocks)`
@@ -106,6 +146,26 @@ describe('jest-each', () => {
         expect(testCallBack).not.toHaveBeenCalled();
       });
 
+      test('does not throw error when there are multibyte characters in last column headings', () => {
+        const globalTestMocks = getGlobalTestMocks();
+        const eachObject = each.withGlobal(globalTestMocks)`
+          a    | b    | (๑ఠ‿ఠ๑)＜expected
+          ${1} | ${1} | ${2}
+        `;
+        const testFunction = get(eachObject, keyPath);
+        const testCallBack = jest.fn();
+        testFunction('accept multibyte characters', testCallBack);
+
+        const globalMock = get(globalTestMocks, keyPath);
+
+        expect(() => globalMock.mock.calls[0][1]()).not.toThrowError();
+        expect(testCallBack).toHaveBeenCalledWith({
+          '(๑ఠ‿ఠ๑)＜expected': 2,
+          a: 1,
+          b: 1,
+        });
+      });
+
       test('does not throw error when there is additional words in template after heading row', () => {
         const globalTestMocks = getGlobalTestMocks();
         const eachObject = each.withGlobal(globalTestMocks)`

From 061c053c64d6f36c2515cdd33e9b3e64641751dd Mon Sep 17 00:00:00 2001
From: Hiroshi Nishijima <hnisiji@gmail.com>
Date: Sun, 22 Aug 2021 12:33:10 +0900
Subject: [PATCH 3/3] Update changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60e15e30b962..79f19e456434 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - `[jest-environment-node]` Add `Event` and `EventTarget` to node global environment. ([#11705](https://github.com/facebook/jest/issues/11705))
 - `[jest-mock]` Fix `spyOn` to use `Object.prototype.hasOwnProperty` [#11721](https://github.com/facebook/jest/pull/11721)
 - `[jest-resolver]` Add dependency on `jest-haste-map` [#11759](https://github.com/facebook/jest/pull/11759)
+- `[jest-each]` Relaxed the validation to allow multibyte characters in headings ([#11575](https://github.com/facebook/jest/pull/11575))
 
 ### Chore & Maintenance