WIP TAP_ONLY, --only, {only: true} and warning to stderr if {only: tr…

…ue} but tap’s only option is not true

bin/run.js

@@ -394,6 +394,10 @@ function parseArgs (args, defaults) {
         options.bail = false
         continue
 
+      case '--only':
+        options.only = true
+        continue
+
       case '--':
         options.files = options.files.concat(args.slice(i + 1))
         i = args.length
@@ -603,6 +607,9 @@ function setupTapEnv (options) {
     process.env.TAP_GREP = options.grep.map(function (pattern) {
       return pattern.toString()
     }).join('\n')
+
+  if (options.only)
+    process.env.TAP_ONLY = '1'
 }
 
 function globFiles (files) {

lib/base.js

@@ -44,6 +44,7 @@ function Base (options) {
   this.jobs = +ownOrEnv(options, 'jobs', 'TAP_JOBS') || 0
   this.skip = ownOr(options, 'skip', false)
   this.todo = ownOr(options, 'todo', false)
+  this.only = ownOr(options, 'only', false)
   this.setupParser(options)
   this.finished = false
   this.output = ''
@@ -214,6 +215,7 @@ Base.prototype.inspect = function () {
     output: this.output,
     skip: this.skip,
     todo: this.todo,
+    only: this.only,
     results: this.results,
     options: [
       'autoend',
@@ -228,7 +230,8 @@ Base.prototype.inspect = function () {
       'timeout',
       'at',
       'skip',
-      'todo'
+      'todo',
+      'only'
     ].reduce(function (set, k) {
       if (this.options[k] !== undefined)
         set[k] = this.options[k]

lib/clean-yaml-object.js

@@ -61,6 +61,7 @@ function yamlFilter (propertyName, isRoot, source, target) {
   propertyName === 'bail' ||
   propertyName === 'grep' ||
   propertyName === 'grepInvert' ||
+  propertyName === 'only' ||
   propertyName === 'diagnostic' ||
   propertyName === 'buffered' ||
   propertyName === 'parent' ||

lib/point.js

@@ -31,6 +31,8 @@ function tpMessage (message, extra) {
     message += ' # TODO'
     if (typeof extra.todo === 'string')
       message += ' ' + extra.todo
+  } else if (extra.only) {
+    message += ' # ONLY'
   } else if (extra.time)
     message += ' # time=' + extra.time + 'ms'
 

lib/tap.js

@@ -131,6 +131,10 @@ if (process.env.TAP_GREP_INVERT === '1') {
   opt.grepInvert = true
 }
 
+if (process.env.TAP_ONLY === '1') {
+  opt.only = true
+}
+
 var tap = new TAP(opt)
 module.exports = tap
 tap.mocha = require('./mocha.js')