Javaslang project (#927)
* made changes to java reflection * removed redundant method makeSound in Animal abstract class * added project for play-framework article * added project for regex * changed regex project from own model to core-java * added project for routing in play * made changes to regex project * refactored code for REST API with Play project * refactored student store indexing to zero base * added unit tests, removed bad names * added NIO Selector project under core-java module * requested changes made * added project for nio2 * standardized exception based tests * fixed exception based tests * removed redundant files * added network interface project * used UUID other than timestamps * fixed network interface tests * removed filetest change * made changes to NIO2 FileTest names * added project for asyncronous channel apis * added project for NIO2 advanced filesystems APIS * merge conflicts * merged changes to asyncfiletest with future get API * removed while loops from async client and server * added project for java8 optional * fixed merge conflicts in spring-core * fixed optional * fixed optional * fixed asyncechotest * shifted optional to own package * made additional tests to demo filter API * added code for Map * added javaslang project * javaslang project * added pattern matcher code
This commit is contained in:
Egima profile
committed by
Grzegorz Piwowarek
Grzegorz Piwowarek
parent
c5b67b5620
commit
babd9da492
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>Javaslang</artifactId>
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<version>1.0</version>
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<name>Javaslang</name>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.3</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.hamcrest</groupId>
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<artifactId>hamcrest-all</artifactId>
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<version>1.3</version>
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</dependency>
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<dependency>
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<groupId>io.javaslang</groupId>
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<artifactId>javaslang</artifactId>
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<version>2.1.0-alpha</version>
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</dependency>
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</dependencies>
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</project>
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@@ -0,0 +1,38 @@
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package com.baeldung.javaslang;
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public class Person {
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private String name;
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private int age;
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public Person(String name, int age) {
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super();
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this.name = name;
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this.age = age;
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}
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public Person() {
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super();
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}
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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@Override
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public String toString() {
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return "Person [name=" + name + ", age=" + age + "]";
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}
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}
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@@ -0,0 +1,22 @@
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package com.baeldung.javaslang;
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import javaslang.collection.List;
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import javaslang.control.Validation;
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class PersonValidator {
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String NAME_ERR = "Invalid characters in name: ";
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String AGE_ERR = "Age must be at least 0";
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public Validation<List<String>, Person> validatePerson(String name, int age) {
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return Validation.combine(validateName(name), validateAge(age)).ap(Person::new);
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}
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private Validation<String, String> validateName(String name) {
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String invalidChars = name.replaceAll("[a-zA-Z ]", "");
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return invalidChars.isEmpty() ? Validation.valid(name) : Validation.invalid(NAME_ERR + invalidChars);
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}
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private Validation<String, Integer> validateAge(int age) {
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return age < 0 ? Validation.invalid(AGE_ERR) : Validation.valid(age);
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}
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}
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File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,114 @@
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package com.baeldung.javaslang;
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import static javaslang.API.$;
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import static javaslang.API.Case;
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import static javaslang.API.Match;
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import static javaslang.API.run;
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import static javaslang.Predicates.*;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertTrue;
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import java.util.Optional;
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import org.junit.Test;
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import javaslang.MatchError;
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import javaslang.control.Option;
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public class PatternMatchingTest {
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@Test
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public void whenMatchesDefault_thenCorrect() {
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int input = 5;
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String output = Match(input).of(Case($(1), "one"), Case($(2), "two"), Case($(3), "three"), Case($(), "unknown"));
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assertEquals("unknown", output);
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}
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@Test(expected = MatchError.class)
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public void givenNoMatchAndNoDefault_whenThrows_thenCorrect() {
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int input = 5;
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Match(input).of(Case($(1), "one"), Case($(2), "two"));
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}
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@Test
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public void whenMatchWorksWithOption_thenCorrect() {
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int i = 10;
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Option<String> s = Match(i).option(Case($(0), "zero"));
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assertTrue(s.isEmpty());
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assertEquals("None", s.toString());
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}
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@Test
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public void whenMatchWorksWithPredicate_thenCorrect() {
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int i = 3;
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String s = Match(i).of(Case(is(1), "one"), Case(is(2), "two"), Case(is(3), "three"), Case($(), "?"));
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assertEquals("three", s);
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}
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@Test
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public void givenInput_whenMatchesClass_thenCorrect() {
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Object obj = 5;
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String s = Match(obj).of(Case(instanceOf(String.class), "string matched"), Case($(), "not string"));
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assertEquals("not string", s);
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}
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@Test
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public void givenInput_whenMatchesNull_thenCorrect() {
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Object obj = 5;
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String s = Match(obj).of(Case(isNull(), "no value"), Case(isNotNull(), "value found"));
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assertEquals("value found", s);
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}
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@Test
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public void givenInput_whenContainsWorks_thenCorrect() {
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int i = 5;
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String s = Match(i).of(Case(isIn(2, 4, 6, 8), "Even Single Digit"), Case(isIn(1, 3, 5, 7, 9), "Odd Single Digit"), Case($(), "Out of range"));
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assertEquals("Odd Single Digit", s);
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}
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@Test
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public void givenInput_whenMatchAllWorks_thenCorrect() {
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Integer i = null;
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String s = Match(i).of(Case(allOf(isNotNull(), isIn(1, 2, 3, null)), "Number found"), Case($(), "Not found"));
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assertEquals("Not found", s);
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}
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@Test
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public void givenInput_whenMatchesAnyOfWorks_thenCorrect() {
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Integer year = 1990;
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String s = Match(year).of(Case(anyOf(isIn(1990, 1991, 1992), is(1986)), "Age match"), Case($(), "No age match"));
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assertEquals("Age match", s);
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}
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@Test
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public void givenInput_whenMatchesNoneOfWorks_thenCorrect() {
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Integer year = 1990;
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String s = Match(year).of(Case(noneOf(isIn(1990, 1991, 1992), is(1986)), "Age match"), Case($(), "No age match"));
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assertEquals("No age match", s);
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}
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@Test
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public void whenMatchWorksWithPredicate_thenCorrect2() {
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int i = 5;
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String s = Match(i).of(Case(isIn(2, 4, 6, 8), "Even Single Digit"), Case(isIn(1, 3, 5, 7, 9), "Odd Single Digit"), Case($(), "Out of range"));
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assertEquals("Odd Single Digit", s);
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}
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@Test
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public void whenMatchCreatesSideEffects_thenCorrect() {
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int i = 4;
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Match(i).of(Case(isIn(2, 4, 6, 8), o -> run(this::displayEven)), Case(isIn(1, 3, 5, 7, 9), o -> run(this::displayOdd)), Case($(), o -> run(() -> {
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throw new IllegalArgumentException(String.valueOf(i));
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})));
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}
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public void displayEven() {
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System.out.println("Input is even");
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}
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public void displayOdd() {
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System.out.println("Input is odd");
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}
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}
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