RunesTest.java

import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.junit.Ignore;

public class RunesTest {

  @Test
  public void testSample() {
    assertEquals( "Answer for expression '1+1=?' " , 2 , Runes.solveExpression("1+1=?") );
    assertEquals( "Answer for expression '123*45?=5?088' " , 6 , Runes.solveExpression("123*45?=5?088") );
    assertEquals( "Answer for expression '-5?*-1=5?' " , 0 , Runes.solveExpression("-5?*-1=5?") );
    assertEquals( "Answer for expression '19--45=5?' " , -1 , Runes.solveExpression("19--45=5?") );
    assertEquals( "Answer for expression '??*??=302?' " , 5 , Runes.solveExpression("??*??=302?") );
    assertEquals( "Answer for expression '?*11=??' " , 2 , Runes.solveExpression("?*11=??") );
    assertEquals( "Answer for expression '??605*-63=-73???5' " , 1 , Runes.solveExpression("??605*-63=-73???5") );
  }

}