* first action! (#1)

node_modules/fs-write-stream-atomic/test/basic.js

@@ -0,0 +1,97 @@
+var fs = require('graceful-fs')
+var test = require('tap').test
+var path = require('path')
+var writeStream = require('../index.js')
+
+var rename = fs.rename
+fs.rename = function (from, to, cb) {
+  setTimeout(function () {
+    rename(from, to, cb)
+  }, 100)
+}
+
+test('basic', function (t) {
+  // open 10 write streams to the same file.
+  // then write to each of them, and to the target
+  // and verify at the end that each of them does their thing
+  var target = path.resolve(__dirname, 'test.txt')
+  var n = 10
+
+  // We run all of our assertions twice:
+  //   once for finish, once for close
+  // There are 6 assertions, two fixed, plus 4 lines in the file.
+  t.plan(n * 2 * 6)
+
+  var streams = []
+  for (var i = 0; i < n; i++) {
+    var s = writeStream(target)
+    s.on('finish', verifier('finish', i))
+    s.on('close', verifier('close', i))
+    streams.push(s)
+  }
+
+  function verifier (ev, num) {
+    return function () {
+      if (ev === 'close') {
+        t.equal(this.__emittedFinish, true, num + '. closed only after finish')
+      } else {
+        this.__emittedFinish = true
+        t.equal(ev, 'finish', num + '. finished')
+      }
+
+      // make sure that one of the atomic streams won.
+      var res = fs.readFileSync(target, 'utf8')
+      var lines = res.trim().split(/\n/)
+      lines.forEach(function (line, lineno) {
+        var first = lines[0].match(/\d+$/)[0]
+        var cur = line.match(/\d+$/)[0]
+        t.equal(cur, first, num + '. line ' + lineno + ' matches')
+      })
+
+      var resExpr = /^first write \d+\nsecond write \d+\nthird write \d+\nfinal write \d+\n$/
+      t.similar(res, resExpr, num + '. content matches')
+    }
+  }
+
+  // now write something to each stream.
+  streams.forEach(function (stream, i) {
+    stream.write('first write ' + i + '\n')
+  })
+
+  // wait a sec for those writes to go out.
+  setTimeout(function () {
+    // write something else to the target.
+    fs.writeFileSync(target, 'brutality!\n')
+
+    // write some more stuff.
+    streams.forEach(function (stream, i) {
+      stream.write('second write ' + i + '\n')
+    })
+
+    setTimeout(function () {
+      // Oops!  Deleted the file!
+      fs.unlinkSync(target)
+
+      // write some more stuff.
+      streams.forEach(function (stream, i) {
+        stream.write('third write ' + i + '\n')
+      })
+
+      setTimeout(function () {
+        fs.writeFileSync(target, 'brutality TWO!\n')
+        streams.forEach(function (stream, i) {
+          stream.end('final write ' + i + '\n')
+        })
+      }, 50)
+    }, 50)
+  }, 50)
+})
+
+test('cleanup', function (t) {
+  fs.readdirSync(__dirname).filter(function (f) {
+    return f.match(/^test.txt/)
+  }).forEach(function (file) {
+    fs.unlinkSync(path.resolve(__dirname, file))
+  })
+  t.end()
+})