Do not wrap preprocessor lines in the generated JNI.

base/android/jni_generator/jni_generator_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Tests for jni_generator.py.
 
 This test suite contains various tests for the JNI generator.
 It exercises the low-level parser all the way up to the
 code generator and ensures the output matches a golden
@@ skipping 1473 matching lines @@
 
   def testJniSelfDocumentingExample(self):
     script_dir = os.path.dirname(sys.argv[0])
     content = file(os.path.join(script_dir, 'SampleForTests.java')).read()
     golden_content = file(os.path.join(script_dir,
                                        'golden_sample_for_tests_jni.h')).read()
     jni_from_java = jni_generator.JNIFromJavaSource(
         content, 'org/chromium/example/jni_generator/SampleForTests')
     self.assertTextEquals(golden_content, jni_from_java.GetContent())
 
+  def testNoWrappingPreprocessorLines(self):
+    test_data = """
+    package com.google.lookhowextremelylongiam.snarf.icankeepthisupallday;
+
+    class ReallyLongClassNamesAreAllTheRage {
+        private static native int nativeTest();
+    }
+    """
+    jni_from_java = jni_generator.JNIFromJavaSource(
+        test_data, ('com/google/lookhowextremelylongiam/snarf/'
+                    'icankeepthisupallday/ReallyLongClassNamesAreAllTheRage'))
+    jni_lines = jni_from_java.GetContent().split('\n')
+    line = filter(lambda line: line.lstrip().startswith('#ifndef'),
+                  jni_lines)[0]
+    self.assertTrue(len(line) > 80,
+                    ('Expected #ifndef line to be > 80 chars: ', line))
+
 if __name__ == '__main__':
   unittest.main()