BookTest

package pl.kimes.core;

import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;

public class BookTest {

    private Book bookToTest;
    private static final String BORROWER = "Jones";

    @Before
    public void newBook() {
        bookToTest = new Book("TestTitle", "2017", "Smith", 1);
    }

    @Test
    public void shouldLendBook_decreaseNumberOfCopies() {
        int expectedNumberOfCopies = 0;

        bookToTest.lendBook(BORROWER);

        assertEquals(expectedNumberOfCopies, bookToTest.getNumberOfCopies());

    }

    @Test
    public void shouldLendBook_changeBookStatus() {
        BookStatus expectedBookStatus = BookStatus.NON_AVAILABLE;

        bookToTest.lendBook(BORROWER);

        assertEquals(expectedBookStatus, bookToTest.getEnumBookStatus());

    }

    @Test
    public void shouldLendBook_setBorrowersName() {
        String expectedBorrowersName = BORROWER;

        bookToTest.lendBook(expectedBorrowersName);

        assertEquals(expectedBorrowersName, bookToTest.getBorrowersName());

    }

    @Test
    public void shouldReturnBook_increaseNumberOfCopies() {
        int expectedNumberOfCopies = 1;

        bookToTest.lendBook(BORROWER);
        bookToTest.returnBook(BORROWER);

        assertEquals("Wrong number of copies", expectedNumberOfCopies, bookToTest.getNumberOfCopies());

    }

    @Test
    public void shouldReturnBook_changeBookStatus() {
        BookStatus expectedBookStatus = BookStatus.AVAILABLE;

        bookToTest.lendBook(BORROWER);
        bookToTest.returnBook(BORROWER);

        assertEquals(expectedBookStatus, bookToTest.getEnumBookStatus());

    }

}