### Question:
EditSequence { public final int shift1() { return length1; } EditSequence();  EditSequence(int initialCapacity);  EditSequence(String first, String second, EdOpWeight w);  EditSequence(String s1, String s2, EdOpWeight w, int chunkLen);  EditSequence(TokenArray first, TokenArray second);  EditSequence(TokenArray a1, TokenArray a2, int chunkLen); EdOp get(int pos); final void add(EdOp op); final void append(EditSequence other); EditSequence head(int len); int size(); int length(); final int shift1(); final int shift2(); @Override String toString(); BiCounter<Character, EdOp> stats(String s1, String s2); BiCounter<Character, EdOp> stats(String s1, String s2, EdOpWeight w); int cost(String s1, String s2, EdOpWeight w); static void main(String[] args);  }### Answer:
@Test public void testShift1() { System.out.println("shift1"); EditSequence instance = new EditSequence("acb", "a b", new OcrOpWeight()); int expResult = 3; int result = instance.shift1(); assertEquals(expResult, result); }