Add npm-recursive-test command

This command complements the already existing `npm-recursive-install`
command. The implementation could be made a lot more DRY, but this is
enough to test whether it might be suitable for inclusion upstream.

Author: dchamb

package.json

@@ -12,7 +12,8 @@
     "test": "./node_modules/.bin/mocha"
   },
   "bin": {
-    "npm-recursive-install": "./recursive-install.js"
+    "npm-recursive-install": "./recursive-install.js",
+    "npm-recursive-test": "./recursive-test.js"
   },
   "repository": {
     "type": "git",

recursive-install.js

@@ -1,42 +1,9 @@
 #!/usr/bin/env node
-
-var path = require('path')
-var shell = require('shelljs')
 var argv = require('yargs').argv
-
-function noop (x) { return x }
-
-function getPackageJsonLocations (dirname) {
-  return shell.find(dirname)
-    .filter(function (fname) {
-      return !(fname.indexOf('node_modules') > -1 || fname[0] === '.') &&
-        path.basename(fname) === 'package.json'
-    })
-    .map(function (fname) {
-      return path.dirname(fname)
-    })
-}
-
-function npmInstall (dir) {
-  shell.cd(dir)
-  console.log('Installing ' + dir + '/package.json...')
-  var result = shell.exec('npm install')
-  console.log('')
-
-  return {
-    dirname: dir,
-    exitCode: result.code
-  }
-}
-
-function filterRoot (dir) {
-  if (path.normalize(dir) === path.normalize(process.cwd())) {
-    console.log('Skipping root package.json...')
-    return false
-  } else {
-    return true
-  }
-}
+var recursive = require('./recursive');
+var getPackageJsonLocations = recursive.getPackageJsonLocations;
+var filterRoot = recursive.filterRoot;
+var npmInstall = recursive.npmInstall;
 
 if (require.main === module) {
   var exitCode = getPackageJsonLocations(process.cwd())
@@ -48,9 +15,3 @@ if (require.main === module) {
 
   process.exit(exitCode)
 }
-
-module.exports = {
-  getPackageJsonLocations: getPackageJsonLocations,
-  npmInstall: npmInstall,
-  filterRoot: filterRoot
-};

recursive-test.js

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+var argv = require('yargs').argv
+var recursive = require('./recursive');
+var getPackageJsonLocations = recursive.getPackageJsonLocations;
+var filterRoot = recursive.filterRoot;
+var npmTest = recursive.npmTest;
+
+if (require.main === module) {
+  var exitCode = getPackageJsonLocations(process.cwd())
+    .filter(argv.skipRoot ? filterRoot : noop)
+    .map(npmTest)
+    .reduce(function (code, result) {
+      return result.exitCode > code ? result.exitCode : code
+    }, 0)
+
+  process.exit(exitCode)
+}

recursive.js

@@ -0,0 +1,55 @@
+var path = require('path')
+var shell = require('shelljs')
+
+function noop (x) { return x }
+
+function getPackageJsonLocations (dirname) {
+  return shell.find(dirname)
+    .filter(function (fname) {
+      return !(fname.indexOf('node_modules') > -1 || fname[0] === '.') &&
+        path.basename(fname) === 'package.json'
+    })
+    .map(function (fname) {
+      return path.dirname(fname)
+    })
+}
+
+function npmInstall (dir) {
+  shell.cd(dir)
+  console.log('Installing ' + dir + '/package.json...')
+  var result = shell.exec('npm install')
+  console.log('')
+
+  return {
+    dirname: dir,
+    exitCode: result.code
+  }
+}
+
+function npmTest (dir) {
+  shell.cd(dir)
+  console.log('Running tests for ' + dir + '/package.json...')
+  var result = shell.exec('npm test')
+  console.log('')
+
+  return {
+    dirname: dir,
+    exitCode: result.code
+  }
+}
+
+function filterRoot (dir) {
+  if (path.normalize(dir) === path.normalize(process.cwd())) {
+    console.log('Skipping root package.json...')
+    return false
+  } else {
+    return true
+  }
+}
+
+module.exports = {
+  getPackageJsonLocations: getPackageJsonLocations,
+  npmInstall: npmInstall,
+  npmTest: npmTest,
+  filterRoot: filterRoot
+};

test/index.js

@@ -2,7 +2,7 @@ var path = require('path')
 var shell = require('shelljs')
 var assert = require('assert')
 
-var script = path.join(__dirname, '../recursive-install.js')
+var script = path.join(__dirname, '../recursive.js')
 
 describe('recursive install', function () {
   var cwd = path.join(shell.tempdir(), 'recursive-install')