pkg/docgen: dir that look like packages, only document the contents of lib

pkg/docgen/test/generate_json_test.dart

Index: pkg/docgen/test/generate_json_test.dart
diff --git a/pkg/docgen/test/generate_json_test.dart b/pkg/docgen/test/generate_json_test.dart
index afb32feea5eabcdeaa4a5e4e5cdffd10a0fe5172..da11e2409fcc980c27205f112fd13a051aadddc9 100644
--- a/pkg/docgen/test/generate_json_test.dart
+++ b/pkg/docgen/test/generate_json_test.dart
@@ -93,6 +93,34 @@ void main() {
       expect(comparator['comment'], expectedComment);
     });
   });
+
+  test('exclude non-lib code from package docs', () {

[kevmoo, 2014/03/17 20:28:33]

Ensure that test libs in the docgen package don't show up when documenting the
package.

+    schedule(() {
+      var thisScript = Platform.script;
+      var thisPath = p.fromUri(thisScript);
+      expect(p.basename(thisPath), 'generate_json_test.dart');
+      expect(p.dirname(thisPath), endsWith('test'));
+
+
+      var codeDir = p.normalize(p.join(thisPath, '..', '..'));
+      print(codeDir);
+      expect(FileSystemEntity.isDirectorySync(codeDir), isTrue);
+      return dg.docgen(['$codeDir/'], out: p.join(d.defaultRoot, 'docs'));
+    });
+
+    d.dir('docs', [
+        d.dir('docgen', [
+          d.matcherFile('docgen.json',  _isJsonMap)
+        ]),
+        d.matcherFile('index.json', _isJsonMap),
+        d.matcherFile('index.txt', _hasSortedLines),
+        d.matcherFile('library_list.json', _isJsonMap),
+        d.nothing('test_lib.json'),
+        d.nothing('test_lib-bar.json'),
+        d.nothing('test_lib-foo.json')
+    ]).validate();
+
+  });
 }
 
 final Matcher _hasSortedLines = predicate((String input) {