Using reflection to change static final File.separatorChar for unit testing?
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by Stefan Kendall
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Published on 2010-03-18T23:20:43Z
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2010/03/18
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Specifically, I'm trying to create a unit test for a method which requires uses File.separatorChar
to build paths on windows and unix. The code must run on both platforms, and yet I get errors with JUnit when I attempt to change this static final field.
Anyone have any idea what's going on?
Field field = java.io.File.class.getDeclaredField( "separatorChar" );
field.setAccessible(true);
field.setChar(java.io.File.class,'/');
When I do this, I get
IllegalAccessException: Can not set static final char field java.io.File.separatorChar to java.lang.Character
Thoughts?
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