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Done solution #296

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0753e4c
Done solution
Andruwa808 Sep 14, 2021
9d0d51e
fix edits
Andruwa808 Sep 14, 2021
417bb44
add calculator_ all methods
Andruwa808 Sep 14, 2021
4fa0e10
fix edits mentor
Andruwa808 Sep 14, 2021
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24 changes: 24 additions & 0 deletions src/main/java/core/basesyntax/Calculator.java
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package core.basesyntax;

public class Calculator {
public double calculate(double firstNumber, double secondNumber, char operation) {
switch (operation) {
case '+':
return firstNumber + secondNumber;
case '-':
return firstNumber - secondNumber;
case '*':
return firstNumber * secondNumber;
case '/':
if (secondNumber == 0) {
throw new ArithmeticException("You can't divide by 0!");
}
return firstNumber / secondNumber;
case '^':
return Math.pow(firstNumber, secondNumber);
default:
throw new IllegalArgumentException("This operation " + operation
+ " doesn't exist");
}
}
}
8 changes: 0 additions & 8 deletions src/main/java/core/basesyntax/HelloWorld.java
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230 changes: 230 additions & 0 deletions src/test/java/core/basesyntax/CalculatorTest.java
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package core.basesyntax;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

import org.junit.jupiter.api.Test;

public class CalculatorTest {
private static final double DELTA = 0.000001;
private static Calculator calculator = new Calculator();
private double expected;
private double actual;

@Test
public void calculator_positiveAddition_Ok() {
expected = 8;
actual = calculator.calculate(1,7,'+');
assertEquals(expected, actual);
}

@Test
public void calculator_negativeAddition_Ok() {
expected = -8;
actual = calculator.calculate(-1,-7,'+');
assertEquals(expected, actual);
}

@Test
public void calculator_positiveNegativeAddition_Ok() {
expected = 6;
actual = calculator.calculate(-1,7,'+');
assertEquals(expected, actual);
expected = -6;
actual = calculator.calculate(1,-7,'+');
assertEquals(expected, actual);
}

@Test
public void calculator_differentPlacesZeroAddition_Ok() {
expected = 1;
actual = calculator.calculate(1,0,'+');
assertEquals(expected, actual);
actual = calculator.calculate(0,1,'+');
assertEquals(expected, actual);
}

@Test
public void calculator_maxMinValuesAddition_Ok() {
expected = Double.POSITIVE_INFINITY;
actual = calculator.calculate(Double.MAX_VALUE, Double.MAX_VALUE,'+');
assertEquals(expected, actual, DELTA);
expected = 0;
actual = calculator.calculate(Double.MIN_VALUE, Double.MIN_VALUE,'+');
assertEquals(expected, actual, DELTA);
}

@Test
public void calculator_positiveSubtraction_Ok() {
expected = -6;
actual = calculator.calculate(1,7,'-');
assertEquals(expected, actual);
}

@Test
public void calculator_negativeSubtraction_Ok() {
expected = 6;
actual = calculator.calculate(-1,-7,'-');
assertEquals(expected, actual);
}

@Test
public void calculator_positiveNegativeSubtraction_Ok() {
expected = 8;
actual = calculator.calculate(1,-7,'-');
assertEquals(expected, actual);
expected = -8;
actual = calculator.calculate(-1,7,'-');
assertEquals(expected, actual);
}

@Test
public void calculator_differentPlacesZeroSubtraction_Ok() {
expected = 1;
actual = calculator.calculate(1,0,'-');
assertEquals(expected, actual);
expected = -1;
actual = calculator.calculate(0,1,'-');
assertEquals(expected, actual);
}

@Test
public void calculator_maxMinValuesSubtraction_Ok() {
expected = 0;
actual = calculator.calculate(Double.MAX_VALUE, Double.MAX_VALUE,'-');
assertEquals(expected, actual, DELTA);
expected = 0;
actual = calculator.calculate(Double.MIN_VALUE, Double.MIN_VALUE,'-');
assertEquals(expected, actual, DELTA);
}

@Test
public void calculator_positiveMultiplication_Ok() {
expected = 7;
actual = calculator.calculate(1,7,'*');
assertEquals(expected, actual);
}

@Test
public void calculator_negativeMultiplication_Ok() {
expected = 7;
actual = calculator.calculate(-1,-7,'*');
assertEquals(expected, actual);
}

@Test
public void calculator_positiveNegativeMultiplication_Ok() {
expected = -7;
actual = calculator.calculate(-1,7,'*');
assertEquals(expected, actual);
expected = -7;
actual = calculator.calculate(1,-7,'*');
assertEquals(expected, actual);
}

@Test
public void calculator_differentPlacesZeroMultiplication_Ok() {
expected = 0;
actual = calculator.calculate(1,0,'*');
assertEquals(expected, actual);
expected = 0;
actual = calculator.calculate(0,7,'*');
assertEquals(expected, actual);
}

@Test
public void calculator_maxMinValuesMultiplication_Ok() {
expected = Double.POSITIVE_INFINITY;
actual = calculator.calculate(Double.MAX_VALUE, Double.MAX_VALUE,'*');
assertEquals(expected, actual);
expected = 0;
actual = calculator.calculate(Double.MIN_VALUE, Double.MIN_VALUE,'*');
assertEquals(expected, actual);
}

@Test
public void calculator_positiveDivision_Ok() {
expected = 2;
actual = calculator.calculate(4,2,'/');
assertEquals(expected, actual);
}

@Test
public void calculator_negativeDivision_Ok() {
expected = 2;
actual = calculator.calculate(-4,-2,'/');
assertEquals(expected, actual);
}

@Test
public void calculator_positiveNegativeDivision_Ok() {
expected = -2;
actual = calculator.calculate(-4,2,'/');
assertEquals(expected, actual);
expected = -2;
actual = calculator.calculate(4,-2,'/');
assertEquals(expected, actual);
}

@Test
public void calculator_firstPlacesZeroDivision_Ok() {
expected = 0;
actual = calculator.calculate(0,2,'/');
assertEquals(expected, actual);
}

@Test
public void calculator_secondPlacesZeroDivision_NotOk() {
assertThrows(ArithmeticException.class,
() -> calculator.calculate(2,0,'/'));
}

@Test
public void calculator_maxMinValueDivision_Ok() {
expected = 1;
actual = calculator.calculate(Double.MAX_VALUE, Double.MAX_VALUE,'/');
assertEquals(expected, actual);
expected = 1;
actual = calculator.calculate(Double.MIN_VALUE, Double.MIN_VALUE,'/');
assertEquals(expected, actual);
}

@Test
public void calculator_raisingPositiveToPositiveOrNegative_Ok() {
expected = 64;
actual = calculator.calculate(4,3,'^');
assertEquals(expected, actual);
expected = 0.0625;
actual = calculator.calculate(4,-2,'^');
assertEquals(expected, actual, DELTA);
}

@Test
public void calculator_raisingNegativeToPositiveOrNegative_Ok() {
expected = 16;
actual = calculator.calculate(-4,2,'^');
assertEquals(expected, actual);
expected = 0.0625;
actual = calculator.calculate(-4,-2,'^');
assertEquals(expected, actual, DELTA);
}

@Test
public void calculator_raisingValueToZero_Ok() {
expected = 1;
actual = calculator.calculate(2,0,'^');
assertEquals(expected, actual, DELTA);
}

@Test
public void calculator_raisingZeroToPower_Ok() {
expected = 0;
actual = calculator.calculate(0,2,'^');
assertEquals(expected, actual);
}

@Test
public void calculator_illegalOperation_notOk() {
assertThrows(IllegalArgumentException.class, () -> calculator.calculate(1,2,'&'));
}
}
8 changes: 0 additions & 8 deletions src/test/java/core/basesyntax/HelloWorldTest.java
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