diff --git a/test/eval.coffee b/test/eval.coffee
new file mode 100644
index 00000000..80dec4c5
--- /dev/null
+++ b/test/eval.coffee
@@ -0,0 +1,29 @@
+{Script} = require 'vm'
+
+test "CoffeeScript.eval runs in the global context by default", ->
+  global.punctuation = '!'
+  code = '''
+  global.fhqwhgads = "global superpower#{global.punctuation}"
+  '''
+  result = CoffeeScript.eval code
+  eq result, 'global superpower!'
+  eq fhqwhgads, 'global superpower!'
+
+test "CoffeeScript.eval can run in, and modify, a Script context sandbox", ->
+  sandbox = Script.createContext()
+  sandbox.foo = 'bar'
+  code = '''
+  global.foo = 'not bar!'
+  '''
+  result = CoffeeScript.eval code, {sandbox}
+  eq result, 'not bar!'
+  eq sandbox.foo, 'not bar!'
+
+test "CoffeeScript.eval can run in, but cannot modify, an ordinary object sandbox", ->
+  sandbox = {foo: 'bar'}
+  code = '''
+  global.foo = 'not bar!'
+  '''
+  result = CoffeeScript.eval code, {sandbox}
+  eq result, 'not bar!'
+  eq sandbox.foo, 'bar'
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