Freestyle Sparring

import codewars_test as test
# TODO Write tests
import solution # or from solution import example

# test.assert_equals(actual, expected, [optional] message)
@test.describe("Example")
def test_group():
    @test.it("test case")
    def test_case():
        test.assert_equals(1 + 1, 2)

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

// TODO: Replace examples and use TDD by writing your own tests

class SolutionTest {
    @Test
    void printStatement_displays_column_headings() {
        Account account = new Account();
        String statement = account.printStatement();
        String[] rows = statement.split("\\n");
        String[] columns= rows[0].split("\\s");
        String[] expectedColumns = "Date Amount Balance".split(" ");
        assertArrayEquals(expectedColumns, columns);
     }
  
  @Test
  void depositAmountIsDisplayedOnStatement(){
    Account account = new Account();
    account.deposit(500);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(500, line.amount());
  }
  
   @Test
  void depositAmountIsAddedToAccountBalance(){
    Account account = new Account();
    account.deposit(500);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(500, line.balance());
  }
  
  @Test
  void depositDateIsDisplayedOnStatment(){
    String DATE_FORMATTER= "dd-MM-yyyy";
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATE_FORMATTER);
    Account account = new Account();
    account.deposit(500);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(LocalDateTime.now().format(formatter), line.date());
  }
  
  
  @Test
  void withdrawalAmountIsDisplayedOnStatement(){
    Account account = new Account();
    account.deposit(500);
    account.withdraw(100);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(100, line.amount());
  }
  
  @Test
  void withdrawalAmountIsSubtractedFromAccountBalance(){
    Account account = new Account();
    account.deposit(500);
    account.withdraw(100);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(400, line.balance());
  }
  
  @Test
  void withdrawalDateIsDisplayedOnStatment(){
    String DATE_FORMATTER= "dd-MM-yyyy";
    DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATE_FORMATTER);
    Account account = new Account();
    account.deposit(100);
    account.withdraw(100);
    String testStatement = account.printStatement();
    String[] lines = testStatement.split("\n");
    StatementLine line = parseStatementLine(lines[lines.length - 1]);
    assertEquals(LocalDateTime.now().format(formatter), line.date());
  }
  
  @Test 
  public void cannotOverdrawAccount(){
    
  }
  
  //test helper method
 
  private StatementLine parseStatementLine(String statementLine) {
    String[] lineContents = statementLine.trim().split("\\s");
    String date = lineContents[0];
    int amount = Integer.parseInt(lineContents[1]);
    int balance = Integer.parseInt(lineContents[2]);
    return new StatementLine(date, amount, balance);
  }
  private record StatementLine(String date, int amount, int balance){}
}