import org.junit.Assert;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * The test class CalculatorTest.
 *
 * Allison & Alfredo
 * 5/25/2018
 * 
 */
public class CalculatorTest
{
   @Test
   public void memSetTest(){
       //:Given
       Double expected = 2.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(2);
       Double actual = c.memSet();
       //:Then
       Assert.assertEquals(expected, actual);
       
   }
   @Test
   public void memClearTest(){
       //:Given
       Double expected = 0.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(2);
       c.memSet();
       Double actual = c.memClear();
       //:Then
       Assert.assertEquals(expected, actual);
       
   }
   @Test
    public void additionTest(){
        //:Given
        Double expected = 3.0;
        //:When
        Calculator c = new Calculator();
        Double actual = c.add(3);
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
    public void subtractionTest(){
        //:Given
        Double expected = 1.0;
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(4);
        Double actual = c.subtract(3);
        //Then
        Assert.assertEquals(expected, actual);
    }
   @Test
   public void mutliplicationTest(){
       //:Given
       Double expected = 6.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(3);
       Double actual = c.multiply(2);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
   public void divisionTest(){
       //:Given
       Double expected = 0.75;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(3);
       Double actual = c.divide(4);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
   public void powTest(){
       //:Given
       Double expected = 8.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(2);
       Double actual = c.pow(3);
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
    public void squareTest(){
        //:Given
        Double expected = 225.0;
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(15);
        Double actual = c.square();
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
   public void sqrtTest(){
       //:Given
       Double expected = 15.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(225);
       Double actual = c.squareRoot();
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
   public void inverseTest() {
       //:Given
       Double expected = 1.0 / 5.0;
       //:When
       Calculator c = new Calculator();
       c.setDisplayValue(5);
       Double actual = c.inverse();
       //:Then
       Assert.assertEquals(expected, actual);
    }
   @Test
    public void sinTest() {
        //:Given
        Double expected = Math.sin(Math.PI);
        //:When
        Calculator c = new Calculator();
        Double actual = c.sin(Math.PI);
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
    public void cosTest() {
        //:Given
        Double expected = Math.cos(Math.PI);
        //:When
        Calculator c = new Calculator(); 
        Double actual = c.cos(Math.PI);
        //:Then
        Assert.assertEquals(expected, actual);
    }
   @Test
   public void tanTest() {
       //:Given
       Double expected = Math.tan(Math.PI);
       //:When
       Calculator c = new Calculator();
       Double actual = c.tan(Math.PI);
       //:Then
       Assert.assertEquals(expected, actual);
   }
   @Test
   public void inverseSinTest() {
       //:Given
       Double expected = Math.asin(.2);
       //:When
       Calculator c = new Calculator();
       Double actual = c.inverseSin(.2);
       //:Then
       Assert.assertEquals(expected, actual);
    }
    @Test
    public void inverseCosTest() {
        //:Given
        Double expected = Math.acos(.2);
        //:When
        Calculator c = new Calculator();
        Double actual = c.inverseCos(.2);
        //:Then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void inverseTanTest() {
        //:Given
        Double expected = Math.atan(.2);
        //:When
        Calculator c = new Calculator();
        Double actual = c.inverseTan(.2);
        //:then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void logTest() {
        //:Given
        Double expected = Math.log(5);
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(5);
        Double actual = c.log();
        //:Then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void inverseLogTest() {
        //:Given
        Double expected = Math.pow(100, 10);
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(100);
        Double actual = c.inverseLog();
        //:Then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void naturalLogTest() {
        //:Given
        Double expected = Math.log1p(20);
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(20);
        Double actual = c.naturalLog();
        //:Then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void inverseLnTest() {
        //:Given
        Double expected = Math.pow(Math.E, 5);
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(5);
        Double actual = c.inverseLn();
        //:Then
        Assert.assertEquals(expected, actual);
    }
    @Test
    public void factorialTest() {
        //:Given
        Double expected = 120.0;
        //:When
        Calculator c = new Calculator();
        c.setDisplayValue(5);
        Double actual = c.factorial();
        //:Then
        Assert.assertEquals(expected, actual);
    }
}