Initial commit

node_modules/doiuse/test/stream.js

@@ -0,0 +1,49 @@
+var stream = require('../stream')
+var through = require('through2')
+
+var test = require('tape')
+
+var expected = [
+  'css-sel3',
+  'background-img-opts'
+]
+
+var expectedWithIgnore = [
+  'background-img-opts'
+]
+
+test('streaming works', function (t) {
+  var s = stream({ browsers: 'IE >= 8' })
+  s.pipe(through.obj(function (usage, enc, next) {
+    t.equal(usage.feature, expected.shift())
+    next()
+  }, function (next) {
+    next()
+    t.equal(expected.length, 0)
+    t.end()
+  }))
+
+  s.end('div:nth-child(2n-1) { background-size: cover; }')
+})
+
+test('streaming works with ignore option', function (t) {
+  var s = stream({ browsers: 'IE >= 8', ignore: ['css-sel3'] })
+  s.pipe(through.obj(function (usage, enc, next) {
+    t.equal(usage.feature, expectedWithIgnore.shift())
+    next()
+  }, function (next) {
+    next()
+    t.equal(expectedWithIgnore.length, 0)
+    t.end()
+  }))
+
+  s.end('div:nth-child(2n-1) { background-size: cover; }')
+})
+
+test('gracefully emit error on bad browsers list', function (t) {
+  t.plan(1)
+  stream({ browsers: 'Blargh!' })
+  .on('error', function (e) {
+    t.ok(e)
+  })
+})