diff --git a/spec/asar-spec.coffee b/spec/asar-spec.coffee
new file mode 100644
index 000000000000..397255581825
--- /dev/null
+++ b/spec/asar-spec.coffee
@@ -0,0 +1,31 @@
+assert = require 'assert'
+fs     = require 'fs'
+path   = require 'path'
+
+describe 'asar package', ->
+  fixtures = path.join __dirname, 'fixtures'
+
+  describe 'node api', ->
+    describe 'fs.readFileSync', ->
+      it 'reads a normal file', ->
+        file1 = path.join fixtures, 'asar', 'a.asar', 'file1'
+        assert.equal fs.readFileSync(file1).toString(), 'file1\n'
+        file2 = path.join fixtures, 'asar', 'a.asar', 'file2'
+        assert.equal fs.readFileSync(file2).toString(), 'file2\n'
+        file3 = path.join fixtures, 'asar', 'a.asar', 'file3'
+        assert.equal fs.readFileSync(file3).toString(), 'file3\n'
+
+      it 'reads a linked file', ->
+        p = path.join fixtures, 'asar', 'a.asar', 'link1'
+        assert.equal fs.readFileSync(p).toString(), 'file1\n'
+
+      it 'reads a file from linked directory', ->
+        p = path.join fixtures, 'asar', 'a.asar', 'link2', 'file1'
+        assert.equal fs.readFileSync(p).toString(), 'file1\n'
+        p = path.join fixtures, 'asar', 'a.asar', 'link2', 'link2', 'file1'
+        assert.equal fs.readFileSync(p).toString(), 'file1\n'
+
+      it 'throws ENOENT error when can not find a file', ->
+        p = path.join fixtures, 'asar', 'a.asar', 'not-exist'
+        throws = -> fs.readFileSync p
+        assert.throws throws, /ENOENT/
diff --git a/spec/fixtures/asar/a.asar b/spec/fixtures/asar/a.asar
new file mode 100644
index 000000000000..7f04d34f6040
Binary files /dev/null and b/spec/fixtures/asar/a.asar differ