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BAEL-3184 (#7505)

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- Moved operator related modules from core-java-lang-syntax to core-java-lang-operators
This commit is contained in:
vatsalgosar
2019-08-05 11:24:57 +05:30
committed by maibin
parent c8e517f6e8
commit f767e462f5
15 changed files with 0 additions and 63 deletions
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5
core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Circle.java Normal file
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package com.baeldung.keyword;
public class Circle extends Round implements Shape {
}

4
core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Ring.java Normal file
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package com.baeldung.keyword;
public class Ring extends Round {
}

4
core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Round.java Normal file
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package com.baeldung.keyword;
public class Round {
}

4
core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Shape.java Normal file
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package com.baeldung.keyword;
public interface Shape {
}

4
core-java-modules/core-java-lang-operators/src/main/java/com/baeldung/keyword/Triangle.java Normal file
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package com.baeldung.keyword;
public class Triangle implements Shape {
}

5
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/diamond/Car.java Normal file
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package com.baeldung.java.diamond;
public class Car<T extends Engine> implements Vehicle<T> {
}

13
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/diamond/DiamondOperatorUnitTest.java Normal file
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package com.baeldung.java.diamond;
import static org.junit.Assert.assertNotNull;
import org.junit.Test;
public class DiamondOperatorUnitTest {
@Test
public void whenCreateCarUsingDiamondOperator_thenSuccess() {
Car<Diesel> myCar = new Car<>();
assertNotNull(myCar);
}
}

10
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/diamond/Diesel.java Normal file
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package com.baeldung.java.diamond;
public class Diesel implements Engine {
@Override
public void start() {
System.out.println("Started Diesel...");
}
}

6
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/diamond/Engine.java Normal file
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package com.baeldung.java.diamond;
public interface Engine {
void start();
}

5
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/diamond/Vehicle.java Normal file
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package com.baeldung.java.diamond;
public interface Vehicle<T extends Engine> {
}

46
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/java/doublebrace/DoubleBraceUnitTest.java Normal file
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package com.baeldung.java.doublebrace;
import org.junit.Test;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Stream;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toSet;
import static org.junit.Assert.assertTrue;
public class DoubleBraceUnitTest {
@Test
public void whenInitializeSetWithoutDoubleBraces_containsElements() {
final Set<String> countries = new HashSet<>();
countries.add("India");
countries.add("USSR");
countries.add("USA");
assertTrue(countries.contains("India"));
}
@Test
public void whenInitializeSetWithDoubleBraces_containsElements() {
final Set<String> countries = new HashSet<String>() {
{
add("India");
add("USSR");
add("USA");
}
};
assertTrue(countries.contains("India"));
}
@Test
public void whenInitializeUnmodifiableSetWithDoubleBrace_containsElements() {
Set<String> countries = Stream.of("India", "USSR", "USA")
.collect(collectingAndThen(toSet(), Collections::unmodifiableSet));
assertTrue(countries.contains("India"));
}
}

55
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/keyword/test/InstanceOfUnitTest.java Normal file
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package com.baeldung.keyword.test;
import org.junit.Assert;
import org.junit.jupiter.api.Test;
import com.baeldung.keyword.Circle;
import com.baeldung.keyword.Ring;
import com.baeldung.keyword.Round;
import com.baeldung.keyword.Shape;
import com.baeldung.keyword.Triangle;
public class InstanceOfUnitTest {
@Test
public void giveWhenInstanceIsCorrect_thenReturnTrue() {
Ring ring = new Ring();
Assert.assertTrue("ring is instance of Round ", ring instanceof Round);
}
@Test
public void giveWhenObjectIsInstanceOfType_thenReturnTrue() {
Circle circle = new Circle();
Assert.assertTrue("circle is instance of Circle ", circle instanceof Circle);
}
@Test
public void giveWhenInstanceIsOfSubtype_thenReturnTrue() {
Circle circle = new Circle();
Assert.assertTrue("circle is instance of Round", circle instanceof Round);
}
@Test
public void giveWhenTypeIsInterface_thenReturnTrue() {
Circle circle = new Circle();
Assert.assertTrue("circle is instance of Shape", circle instanceof Shape);
}
@Test
public void giveWhenTypeIsOfObjectType_thenReturnTrue() {
Thread thread = new Thread();
Assert.assertTrue("thread is instance of Object", thread instanceof Object);
}
@Test
public void giveWhenInstanceValueIsNull_thenReturnFalse() {
Circle circle = null;
Assert.assertFalse("circle is instance of Round", circle instanceof Round);
}
@Test
public void giveWhenComparingClassInDiffHierarchy_thenCompilationError() {
// Assert.assertFalse("circle is instance of Triangle", circle instanceof Triangle);
}
}

54
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/modulo/ModuloUnitTest.java Normal file
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package com.baeldung.modulo;
import org.junit.Test;
import static org.assertj.core.api.Java6Assertions.*;
public class ModuloUnitTest {
@Test
public void whenIntegerDivision_thenLosesRemainder(){
assertThat(11 / 4).isEqualTo(2);
}
@Test
public void whenDoubleDivision_thenKeepsRemainder(){
assertThat(11 / 4.0).isEqualTo(2.75);
}
@Test
public void whenModulo_thenReturnsRemainder(){
assertThat(11 % 4).isEqualTo(3);
}
@Test(expected = ArithmeticException.class)
public void whenDivisionByZero_thenArithmeticException(){
double result = 1 / 0;
}
@Test(expected = ArithmeticException.class)
public void whenModuloByZero_thenArithmeticException(){
double result = 1 % 0;
}
@Test
public void whenDivisorIsOddAndModulusIs2_thenResultIs1(){
assertThat(3 % 2).isEqualTo(1);
}
@Test
public void whenDivisorIsEvenAndModulusIs2_thenResultIs0(){
assertThat(4 % 2).isEqualTo(0);
}
@Test
public void whenItemsIsAddedToCircularQueue_thenNoArrayIndexOutOfBounds(){
int QUEUE_CAPACITY= 10;
int[] circularQueue = new int[QUEUE_CAPACITY];
int itemsInserted = 0;
for (int value = 0; value < 1000; value++) {
int writeIndex = ++itemsInserted % QUEUE_CAPACITY;
circularQueue[writeIndex] = value;
}
}
}

43
core-java-modules/core-java-lang-operators/src/test/java/com/baeldung/ternaryoperator/TernaryOperatorUnitTest.java Normal file
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package com.baeldung.ternaryoperator;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.Test;
public class TernaryOperatorUnitTest {
@Test
public void givenACondition_whenUsingTernaryOperator_thenItEvaluatesConditionAndReturnsAValue() {
int number = 10;
String msg = number > 10 ? "Number is greater than 10" : "Number is less than or equal to 10";
assertThat(msg).isEqualTo("Number is less than or equal to 10");
}
@Test
public void givenATrueCondition_whenUsingTernaryOperator_thenOnlyExpression1IsEvaluated() {
int exp1 = 0, exp2 = 0;
int result = 12 > 10 ? ++exp1 : ++exp2;
assertThat(exp1).isEqualTo(1);
assertThat(exp2).isEqualTo(0);
assertThat(result).isEqualTo(1);
}
@Test
public void givenAFalseCondition_whenUsingTernaryOperator_thenOnlyExpression2IsEvaluated() {
int exp1 = 0, exp2 = 0;
int result = 8 > 10 ? ++exp1 : ++exp2;
assertThat(exp1).isEqualTo(0);
assertThat(exp2).isEqualTo(1);
assertThat(result).isEqualTo(1);
}
@Test
public void givenANestedCondition_whenUsingTernaryOperator_thenCorrectValueIsReturned() {
int number = 6;
String msg = number > 10 ? "Number is greater than 10" : number > 5 ? "Number is greater than 5" : "Number is less than or equal to 5";
assertThat(msg).isEqualTo("Number is greater than 5");
}
}