FileUtils.deleteDirectory( getAssertionCopy() );
assertFalse( "check previous assertion copy deleted", getAssertionCopy().exists() );
checkoutResult = getScmManager().getProviderByUrl( getScmUrl() )
.checkOut( getScmRepository(), new ScmFileSet( getAssertionCopy() ), new ScmTag( tag ) );
assertResultIsSuccess( checkoutResult );
assertEquals( "check readme.txt contents is from tagged version", "/readme.txt",
FileUtils.fileRead( readmeTxt ) );