Created an Item Registry Test (non-functional)

worldedit-core/src/test/java/com/sk89q/worldedit/util/VariedVectorsProvider.java

@@ -0,0 +1,133 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.util;
+
+import com.google.common.collect.AbstractIterator;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Streams;
+import com.sk89q.worldedit.math.BlockVector3;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.ArgumentsProvider;
+import org.junit.jupiter.params.provider.ArgumentsSource;
+import org.junit.jupiter.params.support.AnnotationConsumer;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.stream.Stream;
+
+/**
+ * Argument provider for various vectors.
+ */
+public final class VariedVectorsProvider implements ArgumentsProvider, AnnotationConsumer<VariedVectorsProvider.Test> {
+
+    @Target({ ElementType.ANNOTATION_TYPE, ElementType.METHOD })
+    @Retention(RetentionPolicy.RUNTIME)
+    @Documented
+    @ArgumentsSource(VariedVectorsProvider.class)
+    @ParameterizedTest(name = ParameterizedTest.ARGUMENTS_PLACEHOLDER)
+    public @interface Test {
+
+        /**
+         * If {@code true}, provide a non-matching vector from
+         * the existing vectors set as well. This will nearly
+         * square the number of tests executed, since it will
+         * test <em>every</em> non-matching vector.
+         */
+        boolean provideNonMatching() default false;
+
+    }
+
+    private static final int WORLD_XZ_MINMAX = 30_000_000;
+    private static final long WORLD_Y_MAX = Integer.MAX_VALUE;
+    private static final long WORLD_Y_MIN = Integer.MIN_VALUE;
+
+    // For better coverage assurance, increase these values for a local Gradle run.
+    // Don't do it for IntelliJ, it'll probably run out of memory.
+    private static final int DIVISIONS_XZ = Integer.getInteger("variedvecs.divisions.xz", 5);
+    private static final int DIVISIONS_Y = Integer.getInteger("variedvecs.divisions.y", 5);
+
+    private static final int XZ_STEP = (WORLD_XZ_MINMAX * 2) / DIVISIONS_XZ;
+    private static final long Y_STEP = (WORLD_Y_MAX * 2) / DIVISIONS_Y;
+
+    private static final Set<BlockVector3> ALWAYS_INCLUDE =
+        ImmutableSet.of(BlockVector3.ZERO, BlockVector3.ONE,
+            BlockVector3.at(-WORLD_XZ_MINMAX, 0, -WORLD_XZ_MINMAX),
+            BlockVector3.at(WORLD_XZ_MINMAX, 0, WORLD_XZ_MINMAX),
+            BlockVector3.at(-WORLD_XZ_MINMAX, WORLD_Y_MAX, -WORLD_XZ_MINMAX),
+            BlockVector3.at(WORLD_XZ_MINMAX, WORLD_Y_MAX, WORLD_XZ_MINMAX));
+
+    private boolean provideNonMatching;
+
+    @Override
+    public void accept(Test test) {
+        provideNonMatching = test.provideNonMatching();
+    }
+
+    @Override
+    public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
+        if (provideNonMatching) {
+            return makeVectorsStream()
+                .flatMap(vec -> makeVectorsStream().filter(v -> !v.equals(vec))
+                    .map(v -> Arguments.of(vec, v)));
+        }
+        return makeVectorsStream().map(Arguments::of);
+    }
+
+    public static Stream<BlockVector3> makeVectorsStream() {
+        return Stream.concat(
+            ALWAYS_INCLUDE.stream(),
+            Streams.stream(generateVectors()).filter(v -> !ALWAYS_INCLUDE.contains(v))
+        );
+    }
+
+    private static Iterator<BlockVector3> generateVectors() {
+        return new AbstractIterator<BlockVector3>() {
+
+            private int x = -WORLD_XZ_MINMAX + 1;
+            private int z = -WORLD_XZ_MINMAX + 1;
+            private long y = WORLD_Y_MAX;
+
+            @Override
+            protected BlockVector3 computeNext() {
+                if (x > WORLD_XZ_MINMAX) {
+                    return endOfData();
+                }
+                BlockVector3 newVector = BlockVector3.at(x, (int) y, z);
+                y += Y_STEP;
+                if (y > WORLD_Y_MAX) {
+                    y = 0;
+                    z += XZ_STEP;
+                    if (z > WORLD_XZ_MINMAX) {
+                        z = -WORLD_XZ_MINMAX;
+                        x += XZ_STEP;
+                    }
+                }
+                return newVector;
+            }
+        };
+    }
+}

worldedit-core/src/test/java/com/sk89q/worldedit/util/eventbus/EventBusTest.java

@@ -0,0 +1,71 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.util.eventbus;
+
+import static java.util.Arrays.asList;
+import static java.util.Collections.singletonList;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+public class EventBusTest {
+
+    private static final class Event {
+
+    }
+
+    private static final class Subscriber {
+
+        private final List<Event> events = new ArrayList<>();
+
+        @Subscribe
+        public void onEvent(Event event) {
+            events.add(event);
+        }
+
+    }
+
+    private EventBus eventBus = new EventBus();
+
+    @Test
+    public void testRegister() {
+        Subscriber subscriber = new Subscriber();
+        eventBus.register(subscriber);
+        Event e1 = new Event();
+        eventBus.post(e1);
+        Event e2 = new Event();
+        eventBus.post(e2);
+        assertEquals(asList(e1, e2), subscriber.events);
+    }
+
+    @Test
+    public void testUnregister() {
+        Subscriber subscriber = new Subscriber();
+        eventBus.register(subscriber);
+        Event e1 = new Event();
+        eventBus.post(e1);
+        eventBus.unregister(subscriber);
+        Event e2 = new Event();
+        eventBus.post(e2);
+        assertEquals(singletonList(e1), subscriber.events);
+    }
+}