Automatically bump up global Jest thresholds whenever coverage goes above them. 

Automatically bump up global Jest thresholds whenever coverage goes above them

rbardini

jest-it-up

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const getNewThresholds = (thresholds, coverages, margin, tolerance) =>

  Object.entries(thresholds).reduce((acc, [type, threshold]) => {

    const { pct: coverage } = coverages[type]

    const desiredCoverage = coverage - tolerance

    const factor = Math.pow(10, precision)

    const nextCoverage = Math.trunc(desiredCoverage * factor) / factor

    // Only update threshold if new coverage is higher than

    if (desiredCoverage >= threshold + margin) {

    if (nextCoverage > threshold + margin) {

        diff: +(desiredCoverage - threshold).toFixed(2),

        diff: +(nextCoverage - threshold).toFixed(2),

const confirm = require('@inquirer/confirm').default

const applyChanges = require('./applyChanges')

const getChanges = require('./getChanges')

const getNewThresholds = require('./getNewThresholds')

const outputChanges = require('./outputChanges')

const outputResult = require('./outputResult')

  const configPath = path.resolve(process.cwd(), config)

  const { thresholds, coverages } = await getData(configPath)

  const newThresholds = getNewThresholds(

  const { changes, data } = getChanges(configPath, newThresholds)

    !interactive || (await confirm({ message: 'Update thresholds?' }))

  "description": "Automatically bump up global Jest thresholds whenever coverage goes above them",

  "homepage": "https://github.com/rbardini/jest-it-up",

    "url": "https://github.com/rbardini/jest-it-up/issues"

    "url": "https://github.com/rbardini/jest-it-up.git"

  "author": "Rafael Bardini <rafael@rbardini.com> (https://rbardini.com)",

    "lint": "eslint --ignore-path .gitignore . bin/*",

[![npm package version](https://img.shields.io/npm/v/jest-it-up)](https://www.npmjs.com/package/jest-it-up)

[![Build status](https://img.shields.io/github/workflow/status/rbardini/jest-it-up/Main)](https://github.com/rbardini/jest-it-up/actions)

[![Code coverage](https://img.shields.io/codecov/c/github/rbardini/jest-it-up.svg)](https://codecov.io/gh/rbardini/jest-it-up)

[![Dependencies status](https://img.shields.io/librariesio/release/npm/jest-it-up)](https://libraries.io/npm/jest-it-up)

Ensure incremental coverage gains are not lost, and positively reinforce good testing habits. Automatically bump up global Jest thresholds whenever coverage goes above them.

- Conventional `jest.config.js` (`package.json` config unsupported)

- `json-summary` coverage report (see [usage](#usage))

jest-it-up exposes a standalone CLI tool (see [options](#options)), but you most likelly want to use it in a post-test script.

jest-it-up exposes a standalone CLI tool (see [options](#options)), but you most likely want to use it in a post-test script.

    "test": "jest --coverage", // or set `collectCoverage` to `true` in Jest config

    "posttest": "jest-it-up" // must run from the same directory as `jest.config.js`

    'json-summary' // plus any other reporters, e.g. "lcov", "text", "text-summary"

      branches: 0, // or your current numbers

Once tests finish running, jest-it-up will update configured thresholds to match higher coverage numbers, if any.

  -c, --config <path>          path to a Jest config file (default: 'jest.config.js')

  -m, --margin <margin>        minimum threshold increase (default: 0)

  -t, --tolerance <tolerance>  threshold difference from actual coverage

  -i, --interactive            ask for confirmation before applying changes

  -s, --silent                 do not output messages

  -d, --dry-run                process but do not change files

  -v, --version                output the version number

  -p, --precision              number of threshold decimal places to persist

  -h, --help                   display help for command

		@@ -19,2 +19,3 @@ #!/usr/bin/env node
		silent = false,
		precision = 2,
		} = {}) => {
		@@ -29,2 +30,3 @@ const configPath = path.resolve(process.cwd(), config)
		tolerance,
		precision,
		)
		@@ -31,0 +33,0 @@ const { changes, data } = getChanges(configPath, newThresholds)

		{
		"name": "jest-it-up",
		"version": "3.0.0",
		"version": "3.1.0",
		"description": "Automatically bump up global Jest thresholds whenever coverage goes above them",
		@@ -41,9 +41,9 @@ "keywords": [
		"devDependencies": {
		"eslint": "8.45.0",
		"eslint-config-prettier": "8.8.0",
		"eslint-plugin-prettier": "5.0.0",
		"eslint": "8.56.0",
		"eslint-config-prettier": "9.1.0",
		"eslint-plugin-prettier": "5.1.2",
		"husky": "8.0.3",
		"jest": "29.6.1",
		"lint-staged": "13.2.3",
		"prettier": "3.0.0"
		"jest": "29.7.0",
		"lint-staged": "15.2.0",
		"prettier": "3.1.1"
		},
		@@ -50,0 +50,0 @@ "engines": {

		@@ -1,2 +0,8 @@
		const getNewThresholds = (thresholds, coverages, margin, tolerance) =>
		const getNewThresholds = (
		thresholds,
		coverages,
		margin,
		tolerance,
		precision,
		) =>
		Object.entries(thresholds).reduce((acc, [type, threshold]) => {
		@@ -6,10 +12,12 @@ const { pct: coverage } = coverages[type]
		const desiredCoverage = coverage - tolerance
		const factor = Math.pow(10, precision)
		const nextCoverage = Math.trunc(desiredCoverage * factor) / factor

		// Only update threshold if new coverage is higher than
		// current threshold + margin
		if (desiredCoverage >= threshold + margin) {
		if (nextCoverage > threshold + margin) {
		acc[type] = {
		prev: threshold,
		next: desiredCoverage,
		diff: +(desiredCoverage - threshold).toFixed(2),
		next: nextCoverage,
		diff: +(nextCoverage - threshold).toFixed(2),
		}
		@@ -16,0 +24,0 @@ }

		@@ -26,3 +26,3 @@ # jest-it-up

		jest-it-up exposes a standalone CLI tool (see [options](#options)), but you most likelly want to use it in a post-test script.
		jest-it-up exposes a standalone CLI tool (see [options](#options)), but you most likely want to use it in a post-test script.

		@@ -74,3 +74,4 @@ Within `package.json`:
		-v, --version output the version number
		-p, --precision number of threshold decimal places to persist
		-h, --help display help for command
		```

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