use require rather than eval

Doctests no longer share scope with `fetch` when run headless.

src/doctest.coffee

@@ -77,7 +77,11 @@ fetch = (path) ->
       console.log "running doctests in #{name}..."
       source = rewrite text, type
       source = CoffeeScript.compile source if type is 'coffee'
-      eval source
+      name += "-#{+new Date}"
+      file = "#{__dirname}/#{name}.js"
+      fs.writeFileSync file, source, 'utf8'
+      require "./#{name}"
+      fs.unlink file
       doctest.run()
 
 

test/test.coffee

@@ -64,10 +64,10 @@ do ->
   # .  7,8,9]
   # [1,2,3,4,5,6,7,8,9]
   14: 'multiline assignment'
-  # > @text = "input " +
+  # > @string = "input " +
   # . "may span many " +
   # . "lines"
-  # > text
+  # > string
   # "input may span many lines"
 
   15: 'spaces following "//" and ">" are optional'
@@ -88,9 +88,8 @@ do ->
   # 25
 
   20: 'variable in creation context is not accessible'
-  # > @text = "The quick brown fox jumps over the lazy dog"
-  # > window.text
-  # "The quick brown fox jumps over the lazy dog"
+  # > typeof text
+  # "undefined"
 
   21: 'the rewriter should not rely on automatic semicolon insertion'
   # > "the rewriter should not rely"

test/test.html

@@ -77,7 +77,7 @@
           [true, 25, , 88])
 
         t('variable in creation context is not accessible',
-          [true, '"The quick brown fox jumps over the lazy dog"', , 93])
+          [true, '"undefined"', , 92])
 
         start()
       }

test/test.js

@@ -64,10 +64,10 @@ global = 'global'
   // .  7,8,9]
   // [1,2,3,4,5,6,7,8,9]
   14, 'multiline assignment'
-  // > text = "input " +
+  // > string = "input " +
   // . "may span many " +
   // . "lines"
-  // > text
+  // > string
   // "input may span many lines"
 
   15, 'spaces following "//" and ">" are optional'
@@ -88,9 +88,8 @@ global = 'global'
   // 25 // comment
 
   20, 'variable in creation context is not accessible'
-  // > text = "The quick brown fox jumps over the lazy dog"
-  // > window.text
-  // "The quick brown fox jumps over the lazy dog"
+  // > typeof text
+  // "undefined"
 
   21, 'the rewriter should not rely on automatic semicolon insertion'
   // > "the rewriter should not rely"