question: private void compareFileContents ( File expected , File actual ) throws IOException { assertEquals ( expected . isDirectory ( ) , actual . isDirectory ( ) ) ; assertEquals ( expected . getName ( ) , actual . getName ( ) ) ; if ( expected . isDirectory ( ) ) { File [ ] expectedChildren = expected . listFiles ( ) ; Arrays . sort ( expectedChildren ) ; File [ ] actualChildren = actual . listFiles ( ) ; Arrays . sort ( actualChildren ) ; assertThat ( actualChildren , arrayWithSize ( expectedChildren . length ) ) ; for ( int i = 0 ; i < expectedChildren . length ; i ++ ) { compareFileContents ( expectedChildren [ i ] , actualChildren [ i ] ) ; } } else { assertTrue ( Files . equal ( expected , actual ) ) ; } }
target:  Compare the content of two files or directories recursively.