feat(no-option): display error if no options are provided (#73)

sarbbottam · May 2, 2016 · 6502c9f · 6502c9f
1 parent d3324e8
commit 6502c9f
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diff --git a/src/bin/find.js b/src/bin/find.js
@@ -23,6 +23,14 @@ var getRuleFinder = require('../lib/rule-finder')
 var specifiedFile = argv._[0]
 
 var ruleFinder = getRuleFinder(specifiedFile)
+
+if (!argv.c && !argv.p && !argv.a && !argv.u) {
+  console.log('no option provided, please provide a valid option') // eslint-disable-line no-console
+  console.log('usage:') // eslint-disable-line no-console
+  console.log('eslint-find-rules [option] <file> [flag]') // eslint-disable-line no-console
+  process.exit(0)
+}
+
 Object.keys(options).forEach(function findRules(option) {
   var rules
   var ruleFinderMethod = ruleFinder[option]

diff --git a/test/bin/find.js b/test/bin/find.js
@@ -40,6 +40,21 @@ describe('bin', function() {
     delete require.cache[require.resolve('yargs')]
   })
 
+  it('no option', function() {
+    var callCount = 0
+    console.log = function() { // eslint-disable-line no-console
+      callCount += 1
+      if (arguments[0].match(
+        /(no option provided, please provide a valid option|usage:|eslint-find-rules \[option\] <file> \[flag\])/)
+      ) {
+        return
+      }
+      consoleLog.apply(null, arguments)
+    }
+    proxyquire('../../src/bin/find', stub)
+    assert.equal(callCount, 3) // eslint-disable-line no-console
+  })
+
   it('option -c|--current', function() {
     process.argv[2] = '-c'
     proxyquire('../../src/bin/find', stub)