init

lib/test/datafile.js

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+const expect = require('chai').expect
+const fs = require('fs')
+const datafile = require('../datafile')
+
+const filename = 'test.json'
+
+describe('datafile', function() {
+
+  var resultHandler = function(err) { 
+    if(err) {
+      console.log('unlink failed', err)
+    } else {
+      console.log('file deleted')
+    }
+  }
+
+  it('should write objects to a file', function(done) {
+    var d = datafile(filename, () => {
+      expect(fs.existsSync(filename)).to.be.true
+      done()
+    })
+
+    d.write({
+      foo: 'bar'
+    })
+
+    d.end()
+  })
+
+  after(function() {
+    fs.unlink(filename, resultHandler)
+  })
+})