Split or move java-numbers module

java-numbers-2/src/test/java/com/baeldung/algorithms/primechecker/PrimeCheckerUnitTest.java

@@ -0,0 +1,68 @@
+package com.baeldung.algorithms.primechecker;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class PrimeCheckerUnitTest {
+
+    private final BigIntegerPrimeChecker primeChecker = new BigIntegerPrimeChecker();
+
+    @Test
+    public void whenCheckIsPrime_thenTrue() {
+        assertTrue(primeChecker.isPrime(13l));
+        assertTrue(primeChecker.isPrime(1009L));
+        assertTrue(primeChecker.isPrime(74207281L));
+    }
+
+    @Test
+    public void whenCheckIsPrime_thenFalse() {
+        assertTrue(!primeChecker.isPrime(50L));
+        assertTrue(!primeChecker.isPrime(1001L));
+        assertTrue(!primeChecker.isPrime(74207282L));
+    }
+
+    private final BruteForcePrimeChecker bfPrimeChecker = new BruteForcePrimeChecker();
+
+    @Test
+    public void whenBFCheckIsPrime_thenTrue() {
+        assertTrue(bfPrimeChecker.isPrime(13));
+        assertTrue(bfPrimeChecker.isPrime(1009));
+    }
+
+    @Test
+    public void whenBFCheckIsPrime_thenFalse() {
+        assertFalse(bfPrimeChecker.isPrime(50));
+        assertFalse(bfPrimeChecker.isPrime(1001));
+    }
+
+    private final OptimisedPrimeChecker optimisedPrimeChecker = new OptimisedPrimeChecker();
+
+    @Test
+    public void whenOptCheckIsPrime_thenTrue() {
+        assertTrue(optimisedPrimeChecker.isPrime(13));
+        assertTrue(optimisedPrimeChecker.isPrime(1009));
+    }
+
+    @Test
+    public void whenOptCheckIsPrime_thenFalse() {
+        assertFalse(optimisedPrimeChecker.isPrime(50));
+        assertFalse(optimisedPrimeChecker.isPrime(1001));
+    }
+
+    private final PrimesPrimeChecker primesPrimeChecker = new PrimesPrimeChecker();
+
+    @Test
+    public void whenPrimesCheckIsPrime_thenTrue() {
+        assertTrue(primesPrimeChecker.isPrime(13));
+        assertTrue(primesPrimeChecker.isPrime(1009));
+    }
+
+    @Test
+    public void whenPrimesCheckIsPrime_thenFalse() {
+        assertFalse(primesPrimeChecker.isPrime(50));
+        assertFalse(primesPrimeChecker.isPrime(1001));
+    }
+
+}

java-numbers-2/src/test/java/com/baeldung/java/math/MathUnitTest.java

@@ -0,0 +1,175 @@
+package com.baeldung.java.math;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class MathUnitTest {
+
+    @Test
+    public void whenAbsInteger_thenReturnAbsoluteValue() {
+        assertEquals(5,Math.abs(-5));
+    }
+
+    @Test
+    public void whenMaxBetweenTwoValue_thenReturnMaximum() {
+        assertEquals(10, Math.max(5,10));
+    }
+
+    @Test
+    public void whenMinBetweenTwoValue_thenReturnMinimum() {
+        assertEquals(5, Math.min(5,10));
+    }
+
+    @Test
+    public void whenSignumWithNegativeNumber_thenReturnMinusOne() {
+        assertEquals(-1, Math.signum(-5), 0);
+    }
+
+    @Test
+    public void whenCopySignWithNegativeSign_thenReturnNegativeArgument() {
+        assertEquals(-5, Math.copySign(5,-1), 0);
+    }
+
+    @Test
+    public void whenPow_thenReturnPoweredValue() {
+        assertEquals(25, Math.pow(5,2),0);
+    }
+
+    @Test
+    public void whenSqrt_thenReturnSquareRoot() {
+        assertEquals(5, Math.sqrt(25),0);
+    }
+
+    @Test
+    public void whenCbrt_thenReturnCubeRoot() {
+        assertEquals(5, Math.cbrt(125),0);
+    }
+
+    @Test
+    public void whenExp_thenReturnEulerNumberRaised() {
+        assertEquals(2.718, Math.exp(1),0.1);
+    }
+
+    @Test
+    public void whenExpm1_thenReturnEulerNumberMinusOne() {
+        assertEquals(1.718, Math.expm1(1),0.1);
+    }
+
+    @Test
+    public void whenGetExponent_thenReturnUnbiasedExponent() {
+        assertEquals(8, Math.getExponent(333.3),0);
+        assertEquals(7, Math.getExponent(222.2f),0);
+    }
+
+    @Test
+    public void whenLog_thenReturnValue() {
+        assertEquals(1, Math.log(Math.E),0);
+    }
+
+    @Test
+    public void whenLog10_thenReturnValue() {
+        assertEquals(1, Math.log10(10),0);
+    }
+
+    @Test
+    public void whenLog1p_thenReturnValue() {
+        assertEquals(1.31, Math.log1p(Math.E),0.1);
+    }
+
+    @Test
+    public void whenSin_thenReturnValue() {
+        assertEquals(1, Math.sin(Math.PI/2),0);
+    }
+
+    @Test
+    public void whenCos_thenReturnValue() {
+        assertEquals(1, Math.cos(0),0);
+    }
+
+    @Test
+    public void whenTan_thenReturnValue() {
+        assertEquals(1, Math.tan(Math.PI/4),0.1);
+    }
+
+    @Test
+    public void whenAsin_thenReturnValue() {
+        assertEquals(Math.PI/2, Math.asin(1),0);
+    }
+
+    @Test
+    public void whenAcos_thenReturnValue() {
+        assertEquals(Math.PI/2, Math.acos(0),0);
+    }
+
+    @Test
+    public void whenAtan_thenReturnValue() {
+        assertEquals(Math.PI/4, Math.atan(1),0);
+    }
+
+    @Test
+    public void whenAtan2_thenReturnValue() {
+        assertEquals(Math.PI/4, Math.atan2(1,1),0);
+    }
+
+    @Test
+    public void whenToDegrees_thenReturnValue() {
+        assertEquals(180, Math.toDegrees(Math.PI),0);
+    }
+
+    @Test
+    public void whenToRadians_thenReturnValue() {
+        assertEquals(Math.PI, Math.toRadians(180),0);
+    }
+
+    @Test
+    public void whenCeil_thenReturnValue() {
+        assertEquals(4, Math.ceil(Math.PI),0);
+    }
+
+    @Test
+    public void whenFloor_thenReturnValue() {
+        assertEquals(3, Math.floor(Math.PI),0);
+    }
+
+    @Test
+    public void whenGetExponent_thenReturnValue() {
+        assertEquals(8, Math.getExponent(333.3),0);
+    }
+
+    @Test
+    public void whenIEEERemainder_thenReturnValue() {
+        assertEquals(1.0, Math.IEEEremainder(5,2),0);
+    }
+
+    @Test
+    public void whenNextAfter_thenReturnValue() {
+        assertEquals(1.9499999284744263, Math.nextAfter(1.95f,1),0.0000001);
+    }
+
+    @Test
+    public void whenNextUp_thenReturnValue() {
+        assertEquals(1.9500002, Math.nextUp(1.95f),0.0000001);
+    }
+
+    @Test
+    public void whenRint_thenReturnValue() {
+        assertEquals(2.0, Math.rint(1.95f),0.0);
+    }
+
+    @Test
+    public void whenRound_thenReturnValue() {
+        assertEquals(2.0, Math.round(1.95f),0.0);
+    }
+
+    @Test
+    public void whenScalb_thenReturnValue() {
+        assertEquals(48, Math.scalb(3, 4),0.0);
+    }
+
+    @Test
+    public void whenHypot_thenReturnValue() {
+        assertEquals(5, Math.hypot(4, 3),0.0);
+    }
+
+}

java-numbers-2/src/test/java/com/baeldung/prime/PrimeGeneratorUnitTest.java

@@ -0,0 +1,29 @@
+package com.baeldung.prime;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static com.baeldung.prime.PrimeGenerator.*;
+import static org.junit.Assert.*;
+
+public class PrimeGeneratorUnitTest {
+    @Test
+    public void whenBruteForced_returnsSuccessfully() {
+        final List<Integer> primeNumbers = primeNumbersBruteForce(20);
+        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
+    }
+
+    @Test
+    public void whenOptimized_returnsSuccessfully() {
+        final List<Integer> primeNumbers = primeNumbersTill(20);
+        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
+    }
+
+    @Test
+    public void whenSieveOfEratosthenes_returnsSuccessfully() {
+        final List<Integer> primeNumbers = sieveOfEratosthenes(20);
+        assertEquals(Arrays.asList(new Integer[] { 2, 3, 5, 7, 11, 13, 17, 19 }), primeNumbers);
+    }
+}