Remove code coverage setup

.eslintignore

@@ -1,6 +1,5 @@
 build
 build-module
-coverage
 node_modules
 test/e2e/test-plugins
 vendor

.gitignore

@@ -2,7 +2,6 @@
 build
 build-module
 build-style
-coverage
 node_modules
 gutenberg.zip
 languages/gutenberg.pot

README.md

@@ -1,6 +1,5 @@
 # Gutenberg
 [![Build Status](https://img.shields.io/travis/WordPress/gutenberg/master.svg)](https://travis-ci.org/WordPress/gutenberg)
-[![Coverage](https://img.shields.io/codecov/c/github/WordPress/gutenberg/master.svg)](https://codecov.io/gh/WordPress/gutenberg)
 [![lerna](https://img.shields.io/badge/maintained%20with-lerna-cc00ff.svg)](https://lernajs.io/)
 
 Printing since 1440.

docs/reference/testing-overview.md

@@ -342,11 +342,6 @@ test( 'should contain mars if planets is true', () => {
 
 It's tempting to snapshot deep renders, but that makes for huge snapshots. Additionally, deep renders no longer test a single component, but an entire tree. With `shallow`, we snapshot just the components that are directly rendered by the component we want to test.
 
-### Code Coverage
-
-Code coverage is measured for each PR using the [codecov.io](https://codecov.io/gh/WordPress/gutenberg) tool.
-[Code coverage](https://en.wikipedia.org/wiki/Code_coverage) is a way of measuring the amount of code covered by the tests in the test suite of a project.  In Gutenberg, it is currently measured for JavaScript code only.
-
 ## End to end Testing
 
 If you're using the built-in [local environment](https://github.com/WordPress/gutenberg/blob/master/CONTRIBUTING.md#local-environment), you can run the e2e tests locally using this command:

jsconfig.json

@@ -8,7 +8,6 @@
 	"exclude": [
 		"build",
 		"build-module",
-		"coverage",
 		"node_modules",
 		"test/e2e/test-plugins",
 		"vendor"

package.json

@@ -70,7 +70,6 @@
 		"babel-loader": "8.0.0",
 		"chalk": "2.4.1",
 		"check-node-version": "3.1.1",
-		"codecov": "3.0.2",
 		"concurrently": "3.5.0",
 		"copy-webpack-plugin": "4.5.2",
 		"core-js": "2.5.7",
@@ -152,7 +151,7 @@
 		"check-licenses": "concurrently \"wp-scripts check-licenses --prod --gpl2\" \"wp-scripts check-licenses --dev\"",
 		"precheck-local-changes": "npm run docs:build",
 		"check-local-changes": "( git diff -U0 | xargs -0 node bin/process-git-diff ) || ( echo \"There are local uncommitted changes after one or both of 'npm install' or 'npm run docs:build'!\" && exit 1 );",
-		"ci": "concurrently \"npm run lint\" \"npm run test-unit:coverage-ci\" \"npm run check-local-changes\"",
+		"ci": "concurrently \"npm run lint\" \"npm run test-unit:ci\" \"npm run check-local-changes\"",
 		"predev": "npm run check-engines",
 		"dev": "npm run build:packages && concurrently \"cross-env webpack --watch\" \"npm run dev:packages\"",
 		"dev:packages": "node ./bin/packages/watch.js",
@@ -185,10 +184,9 @@
 		"test-mobile": "yarn --cwd gutenberg-mobile test:inside-gb",
 		"test-php": "npm run lint-php && npm run test-unit-php",
 		"test-unit": "wp-scripts test-unit-js --config test/unit/jest.config.json",
-		"test-unit:coverage": "npm run test-unit -- --coverage",
-		"test-unit:coverage-ci": "npm run test-unit -- --coverage --maxWorkers 1 && codecov",
 		"test-unit:update": "npm run test-unit -- --updateSnapshot",
 		"test-unit:watch": "npm run test-unit -- --watch",
+		"test-unit:ci": "npm run test-unit -- --ci --runInBand",
 		"test-unit-php": "docker-compose run --rm wordpress_phpunit phpunit",
 		"test-unit-php-multisite": "docker-compose run -e WP_MULTISITE=1 --rm wordpress_phpunit phpunit"
 	},

packages/jest-preset-default/README.md

@@ -24,8 +24,6 @@ npm install @wordpress/jest-preset-default --save-dev
 
 #### Brief explanations of options included
 
-* `coverageDirectory` - the directory where Jest outputs its coverage files is set to `coverage`.
-* `coveragePathIgnorePatterns` - coverage information will be skipped for all folders named `build` and `build-module`.
 * `moduleNameMapper` - all `css` and `scss` files containing CSS styles will be stubbed out.
 * `modulePaths` - the root dir of the project is used as a location to search when resolving modules.
 * `setupFiles` - runs code before each test which sets up global variables required in the testing environment.

packages/jest-preset-default/jest-preset.json

@@ -1,11 +1,4 @@
 {
-	"coverageDirectory": "coverage",
-	"coveragePathIgnorePatterns": [
-		"/node_modules/",
-		"<rootDir>/.*/build/",
-		"<rootDir>/.*/build-module/",
-		"<rootDir>/.*/test/"
-	],
 	"moduleNameMapper": {
 		"\\.(scss|css)$": "<rootDir>/node_modules/@wordpress/jest-preset-default/scripts/style-mock.js"
 	},

test/e2e/jest.config.json

@@ -1,9 +1,5 @@
 {
 	"rootDir": "../../",
-	"coveragePathIgnorePatterns": [
-		"/node_modules/",
-		"<rootDir>/gutenberg-mobile/"
-	],
 	"preset": "jest-puppeteer",
 	"setupTestFrameworkScriptFile": "<rootDir>/test/e2e/support/setup-test-framework.js",
 	"testMatch": [

test/unit/jest.config.json

@@ -1,14 +1,5 @@
 {
 	"rootDir": "../../",
-	"collectCoverageFrom": [ "packages/**/*.js" ],
-	"coveragePathIgnorePatterns": [
-		"/node_modules/",
-		"<rootDir>/.*/build/",
-		"<rootDir>/.*/build-module/",
-		"<rootDir>/packages/.*/benchmark/",
-		"<rootDir>/packages/.*/test/",
-		"<rootDir>/gutenberg-mobile/"
-	],
 	"moduleNameMapper": {
 		"@wordpress\\/(block-serialization-spec-parser|is-shallow-equal)$": "packages/$1",
 		"@wordpress\\/([a-z0-9-]+)$": "packages/$1/src"