Method verify

test/StringBuilderTest.java:11–16

(String srcStr, int iterations, String result)

  }
  
  private static void verify(String srcStr, int iterations, String result) {
    int expectedLength = srcStr.length() * iterations;
    if (result.length() != expectedLength) {
      throw new IllegalStateException("Incorrect length: " + result.length() + " vs " + expectedLength);
    }
  }
  
  private static void verify(String expected, String actual) {
    if (! expected.equals(actual)) {