Splitted test to grouped by methods used tests.

Author: oborkovskyi

guava18/src/test/java/com/baeldung/guava/FluentIterableTest.java

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+package com.baeldung.guava;
+
+import com.baeldung.guava.entity.User;
+import com.google.common.base.Functions;
+import com.google.common.base.Joiner;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+
+public class FluentIterableTest {
+
+    private static final int ADULT_AGE = 18;
+
+    @Test
+    public void whenFilteringByAge_shouldFilterOnlyAdultUsers() throws Exception {
+        List<User> users = new ArrayList<>();
+        users.add(new User(1L, "John", 45));
+        users.add(new User(2L, "Michael", 27));
+        users.add(new User(3L, "Max", 16));
+        users.add(new User(4L, "Bob", 10));
+        users.add(new User(5L, "Bill", 65));
+
+        Predicate<User> byAge = input -> input.getAge() > ADULT_AGE;
+
+        List<String> results = FluentIterable.from(users)
+                .filter(byAge)
+                .transform(Functions.toStringFunction())
+                .toList();
+
+        Assert.assertThat(results.size(), equalTo(3));
+    }
+
+    @Test
+    public void whenCreatingFluentIterableFromArray_shouldContainAllUsers() throws Exception {
+        User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
+        FluentIterable<User> users = FluentIterable.of(usersArray);
+
+        Assert.assertThat(users.size(), equalTo(2));
+    }
+
+    @Test
+    public void whenAppendingElementsToFluentIterable_shouldContainAllUsers() throws Exception {
+        User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
+
+        FluentIterable<User> users = FluentIterable.of(usersArray).append(
+                new User(3L, "Bob", 23),
+                new User(4L, "Bill", 17)
+        );
+
+        Assert.assertThat(users.size(), equalTo(4));
+    }
+
+    @Test
+    public void whenAppendingListToFluentIterable_shouldContainAllUsers() throws Exception {
+        User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
+
+        List<User> usersList = new ArrayList<>();
+        usersList.add(new User(3L, "David", 32));
+
+        FluentIterable<User> users = FluentIterable.of(usersArray).append(usersList);
+
+        Assert.assertThat(users.size(), equalTo(3));
+    }
+
+    @Test
+    public void whenJoiningFluentIterableElements_shouldOutputAllUsers() throws Exception {
+        User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
+
+        FluentIterable<User> users = FluentIterable.of(usersArray);
+
+        Assert.assertThat(users.join(Joiner.on("; ")),
+                equalTo("User{id=1, name=John, age=45}; User{id=2, name=Max, age=15}"));
+    }
+}

guava18/src/test/java/com/baeldung/guava/GuavaMiscUtilsTest.java

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+package com.baeldung.guava;
+
+import com.google.common.hash.HashCode;
+import com.google.common.hash.Hashing;
+import com.google.common.net.InetAddresses;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.net.InetAddress;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+
+public class GuavaMiscUtilsTest {
+    @Test
+    public void whenHashingData_shouldReturnCorrectHashCode() throws Exception {
+        int receivedData = 123;
+
+        HashCode hashCode = Hashing.crc32c().hashInt(receivedData);
+        Assert.assertThat(hashCode.toString(), equalTo("495be649"));
+    }
+
+    @Test
+    public void whenDecrementingIpAddress_shouldReturnOneLessIpAddress() throws Exception {
+        InetAddress address = InetAddress.getByName("127.0.0.5");
+        InetAddress decrementedAddress = InetAddresses.decrement(address);
+
+        Assert.assertThat(decrementedAddress.toString(), equalTo("/127.0.0.4"));
+    }
+
+    @Test
+    public void whenExecutingRunnableInThread_shouldLogThreadExecution() throws Exception {
+        ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
+        Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
+
+        Thread t = new Thread(logThreadRun);
+        t.run();
+
+        Assert.assertTrue(threadExecutions.get("main"));
+    }
+}

guava18/src/test/java/com/baeldung/guava/GuavaTest.java

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+package com.baeldung.guava;
+
+import com.google.common.util.concurrent.ListeningExecutorService;
+import com.google.common.util.concurrent.MoreExecutors;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.concurrent.*;
+
+public class MoreExecutorsTest {
+    @Test
+    public void whenExecutingRunnableInThreadPool_shouldLogAllThreadsExecutions() throws Exception {
+        ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
+
+        Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
+
+        ExecutorService executorService = Executors.newFixedThreadPool(2);
+        executorService.submit(logThreadRun);
+        executorService.submit(logThreadRun);
+        executorService.shutdown();
+
+        executorService.awaitTermination(100, TimeUnit.MILLISECONDS);
+
+        Assert.assertTrue(threadExecutions.get("pool-1-thread-1"));
+        Assert.assertTrue(threadExecutions.get("pool-1-thread-2"));
+    }
+
+    @Test
+    public void whenExecutingRunnableInDirectExecutor_shouldLogThreadExecution() throws Exception {
+        ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
+
+        Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
+
+        Executor executor = MoreExecutors.directExecutor();
+        executor.execute(logThreadRun);
+
+        Assert.assertTrue(threadExecutions.get("main"));
+    }
+
+    @Test
+    public void whenExecutingRunnableInListeningExecutor_shouldLogThreadExecution() throws Exception {
+        ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
+
+        Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
+
+        ListeningExecutorService executor = MoreExecutors.newDirectExecutorService();
+        executor.execute(logThreadRun);
+
+        Assert.assertTrue(threadExecutions.get("main"));
+    }
+}

guava18/src/test/java/com/baeldung/guava/MoreExecutorsTest.java

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+package com.baeldung.guava;
+
+import com.baeldung.guava.entity.Administrator;
+import com.baeldung.guava.entity.Player;
+import com.baeldung.guava.entity.User;
+import org.junit.Assert;
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+
+public class MoreObjectsTest {
+
+    @Test
+    public void whenToString_shouldIncludeAllFields() throws Exception {
+        User user = new User(12L, "John Doe", 25);
+
+        Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
+    }
+
+    @Test
+    public void whenPlayerToString_shouldCallParentToString() throws Exception {
+        User user = new Player(12L, "John Doe", 25);
+
+        Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
+    }
+
+    @Test
+    public void whenAdministratorToString_shouldExecuteAdministratorToString() throws Exception {
+        User user = new Administrator(12L, "John Doe", 25);
+
+        Assert.assertThat(user.toString(), equalTo("Administrator{id=12, name=John Doe, age=25}"));
+    }
+}