feat: check multiple filenames, closes #15

Author: bahmutov

.github/workflows/ci.yml

@@ -18,6 +18,8 @@ jobs:
           node bin/check-coverage main1.js
           node bin/check-coverage to/main2.js
           node bin/only-covered main1.js main2.js
+          # and can check multiple files at once
+          node bin/check-coverage main1.js main2.js
 
       - name: Check totals 🛡
         run: node bin/check-total --min 30

.prettierrc.json

@@ -0,0 +1,6 @@
+{
+  "trailingComma": "all",
+  "tabWidth": 2,
+  "semi": false,
+  "singleQuote": true
+}

README.md

@@ -1,4 +1,5 @@
 # check-code-coverage [![ci status][ci image]][ci url] ![check-code-coverage](https://img.shields.io/badge/code--coverage-100%25-brightgreen)
+
 > Utilities for checking the coverage produced by NYC against extra or missing files
 
 ## Use
@@ -10,6 +11,7 @@ npx only-covered foo.js bar.js
 ```
 
 Watch these short videos to see these tools in action:
+
 - [Check code coverage robustly using 3rd party tool](https://youtu.be/dwU5gUG2-EM)
 - [Adding code coverage badge to your project](https://youtu.be/bNVRxb-MKGo)
 - [Show code coverage in commit status check](https://youtu.be/AAl4HmJ3YuM)
@@ -31,6 +33,12 @@ The file has to end with "main.js". You can specify part of the path, like this
 npx check-coverage src/app/main.js
 ```
 
+You can pass multiple filenames
+
+```shell
+npx check-coverage main.js src/person.js
+```
+
 ## only-covered
 
 Check if the coverage JSON file only the given list of files and nothing else. By default `only-covered` script reads `.nyc_output/out.json` file from the current working directory. You can specify a different file using `--from` parameter.

bin/check-coverage.js

@@ -7,51 +7,56 @@ const args = arg({
   '--from': String, // input filename, by default ".nyc_output/out.json"
 })
 
-const filename = args._[0]
-if (!filename) {
-  console.error('Usage: node %s <file name>', __filename)
+const filenames = args._
+if (!filenames.length) {
+  console.error(
+    'Usage: node %s <file name one> <file name two> ...',
+    __filename,
+  )
   process.exit(1)
 }
 
 const fromFilename = args['--from'] || join('.nyc_output', 'out.json')
 const coverageFilename = resolve(fromFilename)
-
 const coverage = require(coverageFilename)
-const fileCoverageKey = Object.keys(coverage).find(name => {
-  const fileCover = coverage[name]
-  if (fileCover.path.endsWith(filename)) {
-    return fileCover
+
+filenames.forEach((filename) => {
+  const fileCoverageKey = Object.keys(coverage).find((name) => {
+    const fileCover = coverage[name]
+    if (fileCover.path.endsWith(filename)) {
+      return fileCover
+    }
+  })
+
+  if (!fileCoverageKey) {
+    console.error(
+      'Could not find file %s in coverage in file %s',
+      filename,
+      coverageFilename,
+    )
+    process.exit(1)
   }
-})
 
-if (!fileCoverageKey) {
-  console.error(
-    'Could not find file %s in coverage in file %s',
-    filename,
-    coverageFilename
+  const fileCoverage = coverage[fileCoverageKey]
+  const statementCounters = fileCoverage.s
+  const isThereUncoveredStatement = Object.keys(statementCounters).some(
+    (k, key) => {
+      return statementCounters[key] === 0
+    },
   )
-  process.exit(1)
-}
-
-const fileCoverage = coverage[fileCoverageKey]
-const statementCounters = fileCoverage.s
-const isThereUncoveredStatement = Object.keys(statementCounters).some(
-  (k, key) => {
-    return statementCounters[key] === 0
+  if (isThereUncoveredStatement) {
+    console.error(
+      'file %s has statements that were not covered by tests',
+      fileCoverage.path,
+    )
+    console.log('statement counters %o', statementCounters)
+
+    process.exit(1)
   }
-)
-if (isThereUncoveredStatement) {
-  console.error(
-    'file %s has statements that were not covered by tests',
-    fileCoverage.path
-  )
-  console.log('statement counters %o', statementCounters)
 
-  process.exit(1)
-}
-
-console.log(
-  '✅ All statements in file %s (found for %s) were covered',
-  fileCoverage.path,
-  filename
-)
+  console.log(
+    '✅ All statements in file %s (found for %s) were covered',
+    fileCoverage.path,
+    filename,
+  )
+})

package-lock.json

@@ -37,6 +37,7 @@
   "homepage": "https://github.com/bahmutov/check-code-coverage#readme",
   "devDependencies": {
     "ava": "3.11.1",
+    "prettier": "2.1.2",
     "semantic-release": "^17.0.4"
   },
   "dependencies": {