From fb18e9a0264b7691eeb18c647e856c6cbaa8519c Mon Sep 17 00:00:00 2001
From: Ignacio Le Fluk <flakolefluk@gmail.com>
Date: Wed, 13 Apr 2022 07:59:57 -0400
Subject: [PATCH] fix(jest-each): fixes error message with incorrect count of
 missing arguments (#12464)

---
 CHANGELOG.md                                  |  1 +
 .../__snapshots__/template.test.ts.snap       | 44 +++++++++----------
 packages/jest-each/src/validation.ts          |  5 ++-
 3 files changed, 26 insertions(+), 24 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29b70dfadf5b..43db8088d062 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -66,6 +66,7 @@
 - `[jest-config, jest-haste-map]` Allow searching for tests in `node_modules` by exposing `retainAllFiles` ([#11084](https://github.com/facebook/jest/pull/11084))
 - `[jest-core]` [**BREAKING**] Exit with status `1` if no tests are found with `--findRelatedTests` flag ([#12487](https://github.com/facebook/jest/pull/12487))
 - `[jest-each]` `%#` is not replaced with index of the test case ([#12517](https://github.com/facebook/jest/pull/12517))
+- `[jest-each]` Fixes error message with incorrect count of missing arguments ([#12464](https://github.com/facebook/jest/pull/12464))
 - `[jest-environment-jsdom]` Make `jsdom` accessible to extending environments again ([#12232](https://github.com/facebook/jest/pull/12232))
 - `[jest-environment-jsdom]` Log JSDOM errors more cleanly ([#12386](https://github.com/facebook/jest/pull/12386))
 - `[jest-environment-node]` Add `MessageChannel`, `MessageEvent` to globals ([#12553](https://github.com/facebook/jest/pull/12553))
diff --git a/packages/jest-each/src/__tests__/__snapshots__/template.test.ts.snap b/packages/jest-each/src/__tests__/__snapshots__/template.test.ts.snap
index c4e912980be2..bf551eeec425 100644
--- a/packages/jest-each/src/__tests__/__snapshots__/template.test.ts.snap
+++ b/packages/jest-each/src/__tests__/__snapshots__/template.test.ts.snap
@@ -54,7 +54,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .describe throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -67,7 +67,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .describe throws error when there are no arguments for given headings 1`] = `
@@ -129,7 +129,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .describe.only throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -142,7 +142,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .describe.only throws error when there are no arguments for given headings 1`] = `
@@ -204,7 +204,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .fdescribe throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -217,7 +217,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .fdescribe throws error when there are no arguments for given headings 1`] = `
@@ -279,7 +279,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .fit throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -292,7 +292,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .fit throws error when there are no arguments for given headings 1`] = `
@@ -354,7 +354,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .it throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -367,7 +367,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .it throws error when there are no arguments for given headings 1`] = `
@@ -429,7 +429,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .it.only throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -442,7 +442,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .it.only throws error when there are no arguments for given headings 1`] = `
@@ -504,7 +504,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -517,7 +517,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test throws error when there are no arguments for given headings 1`] = `
@@ -579,7 +579,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -592,7 +592,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent throws error when there are no arguments for given headings 1`] = `
@@ -654,7 +654,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent.only throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -667,7 +667,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent.only throws error when there are no arguments for given headings 1`] = `
@@ -729,7 +729,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent.skip throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -742,7 +742,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.concurrent.skip throws error when there are no arguments for given headings 1`] = `
@@ -804,7 +804,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.only throws error when there are fewer arguments than headings when given one row 1`] = `
@@ -817,7 +817,7 @@ Received:
 <red>  1,</>
 <red>]</>
 
-Missing <red>2</> arguments"
+Missing <red>1</> argument"
 `;
 
 exports[`jest-each .test.only throws error when there are no arguments for given headings 1`] = `
diff --git a/packages/jest-each/src/validation.ts b/packages/jest-each/src/validation.ts
index 036d3261f726..a2b0088cb2b4 100644
--- a/packages/jest-each/src/validation.ts
+++ b/packages/jest-each/src/validation.ts
@@ -54,9 +54,10 @@ export const validateTemplateTableArguments = (
   headings: Array<string>,
   data: TemplateData,
 ): void => {
-  const missingData = data.length % headings.length;
+  const incompleteData = data.length % headings.length;
+  const missingData = headings.length - incompleteData;
 
-  if (missingData > 0) {
+  if (incompleteData > 0) {
     throw new Error(
       `Not enough arguments supplied for given headings:\n${EXPECTED_COLOR(
         headings.join(' | '),