package test;

import static org.junit.Assert.assertEquals;

import java.util.Arrays;

import org.junit.Test;

public class CalculationsTest {
    @Test
    public void calculate() throws Exception {
        assertEquals(4, Calculations.calculate(2, 4));
        assertEquals(4, Calculations.calculate(4, 2));
        assertEquals(4, Calculations.calculate(4, 4));
    }

    @Test
    public void evenNumbers() throws Exception {
        assertEquals("[2, 4]", Calculations.selectEvenNumbers(Arrays.asList(1, 2, 3, 4)).toString());
    }

    @Test
    public void squares() throws Exception {
        assertEquals("[1, 4, 9]", Calculations.squares(Arrays.asList(1, 2, 3)).toString());
    }

    @Test
    public void squaresOfEvenNumbers() throws Exception {
        assertEquals("[4, 16]", Calculations.squaresOfEvenNumbers(Arrays.asList(1, 2, 3, 4)).toString());
    }

    @Test
    public void wikiTableSyntax() throws Exception {
        assertEquals(
                "<table>\n" +
                "  <tr>\n" +
                "    <td>first</td>\n" +
                "    <td>second</td>\n" +
                "  </tr>\n" +
                "  <tr>\n" +
                "    <td>third</td>\n" +
                "    <td>fourth</td>\n" +
                "  </tr>\n" +
                "</table>",
                Calculations.wikiTable(Arrays.asList(
                        "| first | second |",
                        "| third | fourth |")));
    }
}