PaperMC/patches/server/0004-Test-changes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Mon, 13 Feb 2023 14:14:56 -0800
Subject: [PATCH] Test changes


diff --git a/build.gradle.kts b/build.gradle.kts
index f276414e9e81abf8f1f80991ebd5ab43472e07b1..7a0f2391a464eeebc5e57856300bc000b8d35e52 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -22,6 +22,7 @@ dependencies {
     testImplementation("org.hamcrest:hamcrest:2.2")
     testImplementation("org.mockito:mockito-core:5.11.0")
     testImplementation("org.ow2.asm:asm-tree:9.7")
+    testImplementation("org.junit-pioneer:junit-pioneer:2.2.0") // Paper - CartesianTest
 }
 
 paperweight {
@@ -55,6 +56,12 @@ tasks.jar {
     }
 }
 
+// Paper start - compile tests with -parameters for better junit parameterized test names
+tasks.compileTestJava {
+    options.compilerArgs.add("-parameters")
+}
+// Paper end
+
 publishing {
     publications.create<MavenPublication>("maven") {
     }
diff --git a/src/test/java/io/papermc/paper/registry/RegistryKeyTest.java b/src/test/java/io/papermc/paper/registry/RegistryKeyTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..e1c14886064cde56be7fcd8f22a6ecb2d222a762
--- /dev/null
+++ b/src/test/java/io/papermc/paper/registry/RegistryKeyTest.java
@@ -0,0 +1,33 @@
+package io.papermc.paper.registry;
+
+import java.util.Optional;
+import java.util.stream.Stream;
+import net.minecraft.core.Registry;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.resources.ResourceLocation;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class RegistryKeyTest extends AbstractTestingBase {
+
+    @BeforeAll
+    static void before() throws ClassNotFoundException {
+        Class.forName(RegistryKey.class.getName()); // load all keys so they are found for the test
+    }
+
+    static Stream<RegistryKey<?>> data() {
+        return RegistryKeyImpl.REGISTRY_KEYS.stream();
+    }
+
+    @ParameterizedTest
+    @MethodSource("data")
+    void testApiRegistryKeysExist(final RegistryKey<?> key) {
+        final Optional<Registry<Object>> registry = AbstractTestingBase.REGISTRY_CUSTOM.registry(ResourceKey.createRegistryKey(ResourceLocation.parse(key.key().asString())));
+        assertTrue(registry.isPresent(), "Missing vanilla registry for " + key.key().asString());
+
+    }
+}
diff --git a/src/test/java/io/papermc/paper/util/EmptyTag.java b/src/test/java/io/papermc/paper/util/EmptyTag.java
new file mode 100644
index 0000000000000000000000000000000000000000..6eb95a5e2534974c0e52e2b78b04e7c2b2f28525
--- /dev/null
+++ b/src/test/java/io/papermc/paper/util/EmptyTag.java
@@ -0,0 +1,31 @@
+package io.papermc.paper.util;
+
+import java.util.Collections;
+import java.util.Set;
+import org.bukkit.Keyed;
+import org.bukkit.NamespacedKey;
+import org.bukkit.Tag;
+import org.jetbrains.annotations.NotNull;
+
+public record EmptyTag(NamespacedKey key) implements Tag<Keyed> {
+
+    @SuppressWarnings("deprecation")
+    public EmptyTag() {
+        this(NamespacedKey.randomKey());
+    }
+
+    @Override
+    public @NotNull NamespacedKey getKey() {
+        return this.key;
+    }
+
+    @Override
+    public boolean isTagged(@NotNull final Keyed item) {
+        return false;
+    }
+
+    @Override
+    public @NotNull Set<Keyed> getValues() {
+        return Collections.emptySet();
+    }
+}
diff --git a/src/test/java/io/papermc/paper/util/MethodParameterProvider.java b/src/test/java/io/papermc/paper/util/MethodParameterProvider.java
new file mode 100644
index 0000000000000000000000000000000000000000..3f58ef36df34cd15fcb72189eeff057654adf0c6
--- /dev/null
+++ b/src/test/java/io/papermc/paper/util/MethodParameterProvider.java
@@ -0,0 +1,206 @@
+/*
+ * Copyright 2015-2023 the original author or authors of https://github.com/junit-team/junit5/blob/6593317c15fb556febbde11914fa7afe00abf8cd/junit-jupiter-params/src/main/java/org/junit/jupiter/params/provider/MethodArgumentsProvider.java
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v2.0 which
+ * accompanies this distribution and is available at
+ *
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+
+package io.papermc.paper.util;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Parameter;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestFactory;
+import org.junit.jupiter.api.TestTemplate;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.params.support.AnnotationConsumer;
+import org.junit.platform.commons.JUnitException;
+import org.junit.platform.commons.PreconditionViolationException;
+import org.junit.platform.commons.util.ClassLoaderUtils;
+import org.junit.platform.commons.util.CollectionUtils;
+import org.junit.platform.commons.util.Preconditions;
+import org.junit.platform.commons.util.ReflectionUtils;
+import org.junit.platform.commons.util.StringUtils;
+import org.junitpioneer.jupiter.cartesian.CartesianParameterArgumentsProvider;
+
+import static java.lang.String.format;
+import static java.util.Arrays.stream;
+import static java.util.stream.Collectors.toList;
+import static org.junit.platform.commons.util.AnnotationUtils.isAnnotated;
+import static org.junit.platform.commons.util.CollectionUtils.isConvertibleToStream;
+
+public class MethodParameterProvider implements CartesianParameterArgumentsProvider<Object>, AnnotationConsumer<MethodParameterSource> {
+    private MethodParameterSource source;
+
+    MethodParameterProvider() {
+    }
+
+    @Override
+    public void accept(final MethodParameterSource source) {
+        this.source = source;
+    }
+
+    @Override
+    public Stream<Object> provideArguments(ExtensionContext context, Parameter parameter) {
+        return this.provideArguments(context, this.source);
+    }
+
+    // Below is mostly copied from MethodArgumentsProvider
+
+    private static final Predicate<Method> isFactoryMethod = //
+        method -> isConvertibleToStream(method.getReturnType()) && !isTestMethod(method);
+
+    protected Stream<Object> provideArguments(ExtensionContext context, MethodParameterSource methodSource) {
+        Class<?> testClass = context.getRequiredTestClass();
+        Method testMethod = context.getRequiredTestMethod();
+        Object testInstance = context.getTestInstance().orElse(null);
+        String[] methodNames = methodSource.value();
+        // @formatter:off
+        return stream(methodNames)
+            .map(factoryMethodName -> findFactoryMethod(testClass, testMethod, factoryMethodName))
+            .map(factoryMethod -> validateFactoryMethod(factoryMethod, testInstance))
+            .map(factoryMethod -> context.getExecutableInvoker().invoke(factoryMethod, testInstance))
+            .flatMap(CollectionUtils::toStream);
+        // @formatter:on
+    }
+
+    private static Method findFactoryMethod(Class<?> testClass, Method testMethod, String factoryMethodName) {
+        String originalFactoryMethodName = factoryMethodName;
+
+        // If the user did not provide a factory method name, find a "default" local
+        // factory method with the same name as the parameterized test method.
+        if (StringUtils.isBlank(factoryMethodName)) {
+            factoryMethodName = testMethod.getName();
+            return findFactoryMethodBySimpleName(testClass, testMethod, factoryMethodName);
+        }
+
+        // Convert local factory method name to fully-qualified method name.
+        if (!looksLikeAFullyQualifiedMethodName(factoryMethodName)) {
+            factoryMethodName = testClass.getName() + "#" + factoryMethodName;
+        }
+
+        // Find factory method using fully-qualified name.
+        Method factoryMethod = findFactoryMethodByFullyQualifiedName(testClass, testMethod, factoryMethodName);
+
+        // Ensure factory method has a valid return type and is not a test method.
+        Preconditions.condition(isFactoryMethod.test(factoryMethod), () -> format(
+            "Could not find valid factory method [%s] for test class [%s] but found the following invalid candidate: %s",
+            originalFactoryMethodName, testClass.getName(), factoryMethod));
+
+        return factoryMethod;
+    }
+
+    private static boolean looksLikeAFullyQualifiedMethodName(String factoryMethodName) {
+        if (factoryMethodName.contains("#")) {
+            return true;
+        }
+        int indexOfFirstDot = factoryMethodName.indexOf('.');
+        if (indexOfFirstDot == -1) {
+            return false;
+        }
+        int indexOfLastOpeningParenthesis = factoryMethodName.lastIndexOf('(');
+        if (indexOfLastOpeningParenthesis > 0) {
+            // Exclude simple/local method names with parameters
+            return indexOfFirstDot < indexOfLastOpeningParenthesis;
+        }
+        // If we get this far, we conclude the supplied factory method name "looks"
+        // like it was intended to be a fully-qualified method name, even if the
+        // syntax is invalid. We do this in order to provide better diagnostics for
+        // the user when a fully-qualified method name is in fact invalid.
+        return true;
+    }
+
+    // package-private for testing
+    static Method findFactoryMethodByFullyQualifiedName(
+        Class<?> testClass, Method testMethod,
+        String fullyQualifiedMethodName
+    ) {
+        String[] methodParts = ReflectionUtils.parseFullyQualifiedMethodName(fullyQualifiedMethodName);
+        String className = methodParts[0];
+        String methodName = methodParts[1];
+        String methodParameters = methodParts[2];
+        ClassLoader classLoader = ClassLoaderUtils.getClassLoader(testClass);
+        Class<?> clazz = loadRequiredClass(className, classLoader);
+
+        // Attempt to find an exact match first.
+        Method factoryMethod = ReflectionUtils.findMethod(clazz, methodName, methodParameters).orElse(null);
+        if (factoryMethod != null) {
+            return factoryMethod;
+        }
+
+        boolean explicitParameterListSpecified = //
+            StringUtils.isNotBlank(methodParameters) || fullyQualifiedMethodName.endsWith("()");
+
+        // If we didn't find an exact match but an explicit parameter list was specified,
+        // that's a user configuration error.
+        Preconditions.condition(!explicitParameterListSpecified,
+            () -> format("Could not find factory method [%s(%s)] in class [%s]", methodName, methodParameters,
+                className));
+
+        // Otherwise, fall back to the same lenient search semantics that are used
+        // to locate a "default" local factory method.
+        return findFactoryMethodBySimpleName(clazz, testMethod, methodName);
+    }
+
+    /**
+     * Find the factory method by searching for all methods in the given {@code clazz}
+     * with the desired {@code factoryMethodName} which have return types that can be
+     * converted to a {@link Stream}, ignoring the {@code testMethod} itself as well
+     * as any {@code @Test}, {@code @TestTemplate}, or {@code @TestFactory} methods
+     * with the same name.
+     *
+     * @return the single factory method matching the search criteria
+     * @throws PreconditionViolationException if the factory method was not found or
+     *                                        multiple competing factory methods with the same name were found
+     */
+    private static Method findFactoryMethodBySimpleName(Class<?> clazz, Method testMethod, String factoryMethodName) {
+        Predicate<Method> isCandidate = candidate -> factoryMethodName.equals(candidate.getName())
+            && !testMethod.equals(candidate);
+        List<Method> candidates = ReflectionUtils.findMethods(clazz, isCandidate);
+
+        List<Method> factoryMethods = candidates.stream().filter(isFactoryMethod).collect(toList());
+
+        Preconditions.condition(factoryMethods.size() > 0, () -> {
+            // If we didn't find the factory method using the isFactoryMethod Predicate, perhaps
+            // the specified factory method has an invalid return type or is a test method.
+            // In that case, we report the invalid candidates that were found.
+            if (candidates.size() > 0) {
+                return format(
+                    "Could not find valid factory method [%s] in class [%s] but found the following invalid candidates: %s",
+                    factoryMethodName, clazz.getName(), candidates);
+            }
+            // Otherwise, report that we didn't find anything.
+            return format("Could not find factory method [%s] in class [%s]", factoryMethodName, clazz.getName());
+        });
+        Preconditions.condition(factoryMethods.size() == 1,
+            () -> format("%d factory methods named [%s] were found in class [%s]: %s", factoryMethods.size(),
+                factoryMethodName, clazz.getName(), factoryMethods));
+        return factoryMethods.get(0);
+    }
+
+    private static boolean isTestMethod(Method candidate) {
+        return isAnnotated(candidate, Test.class) || isAnnotated(candidate, TestTemplate.class)
+            || isAnnotated(candidate, TestFactory.class);
+    }
+
+    private static Class<?> loadRequiredClass(String className, ClassLoader classLoader) {
+        return ReflectionUtils.tryToLoadClass(className, classLoader).getOrThrow(
+            cause -> new JUnitException(format("Could not load class [%s]", className), cause));
+    }
+
+    private static Method validateFactoryMethod(Method factoryMethod, Object testInstance) {
+        Preconditions.condition(
+            factoryMethod.getDeclaringClass().isInstance(testInstance) || ReflectionUtils.isStatic(factoryMethod),
+            () -> format("Method '%s' must be static: local factory methods must be static "
+                    + "unless the PER_CLASS @TestInstance lifecycle mode is used; "
+                    + "external factory methods must always be static.",
+                factoryMethod.toGenericString()));
+        return factoryMethod;
+    }
+}
diff --git a/src/test/java/io/papermc/paper/util/MethodParameterSource.java b/src/test/java/io/papermc/paper/util/MethodParameterSource.java
new file mode 100644
index 0000000000000000000000000000000000000000..6cbf11c898439834cffb99ef84e5df1494356809
--- /dev/null
+++ b/src/test/java/io/papermc/paper/util/MethodParameterSource.java
@@ -0,0 +1,14 @@
+package io.papermc.paper.util;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import org.junitpioneer.jupiter.cartesian.CartesianArgumentsSource;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
+@CartesianArgumentsSource(MethodParameterProvider.class)
+public @interface MethodParameterSource {
+    String[] value() default {};
+}
diff --git a/src/test/java/org/bukkit/registry/RegistryConstantsTest.java b/src/test/java/org/bukkit/registry/RegistryConstantsTest.java
index ebcb65cb74acdb9d1bcf2b4b3551a2dc6d809bc9..7d9dbed7281099b78d7f898885b37cdcfe8b099f 100644
--- a/src/test/java/org/bukkit/registry/RegistryConstantsTest.java
+++ b/src/test/java/org/bukkit/registry/RegistryConstantsTest.java
@@ -24,7 +24,7 @@ public class RegistryConstantsTest extends AbstractTestingBase {
     @Test
     public void testDamageType() {
         this.testExcessConstants(DamageType.class, Registry.DAMAGE_TYPE);
-        // this.testMissingConstants(DamageType.class, Registries.DAMAGE_TYPE); // WIND_CHARGE not registered
+        this.testMissingConstants(DamageType.class, Registries.DAMAGE_TYPE); // Paper - re-enable this one
     }
 
     @Test
diff --git a/src/test/java/org/bukkit/support/DummyServer.java b/src/test/java/org/bukkit/support/DummyServer.java
index 1acdf5bc439c073c1777c2c4f5743ae082f4a621..bd13fd46f79ab9000b708526acbadcc7210c8a92 100644
--- a/src/test/java/org/bukkit/support/DummyServer.java
+++ b/src/test/java/org/bukkit/support/DummyServer.java
@@ -99,6 +99,15 @@ public final class DummyServer {
                 return null;
             });
 
+            // Paper start - testing additions
+            final Thread currentThread = Thread.currentThread();
+            when(instance.isPrimaryThread()).thenAnswer(ignored -> Thread.currentThread().equals(currentThread));
+
+            final org.bukkit.plugin.PluginManager pluginManager = new org.bukkit.plugin.SimplePluginManager(instance, new org.bukkit.command.SimpleCommandMap(instance));
+            when(instance.getPluginManager()).thenReturn(pluginManager);
+            when(instance.getTag(anyString(), any(org.bukkit.NamespacedKey.class), any())).thenAnswer(ignored -> new io.papermc.paper.util.EmptyTag());
+            // paper end - testing additions
+
             Bukkit.setServer(instance);
         } catch (Throwable t) {
             throw new Error(t);