fix(annotations): allow for slash-prefixed literal aliases (#748)

cloud-annotations/src/main/java/org/incendo/cloud/annotations/SyntaxParserImpl.java

@@ -38,8 +38,9 @@
  */
 public final class SyntaxParserImpl implements SyntaxParser {
 
-    private static final Predicate<String> PATTERN_ARGUMENT_LITERAL = Pattern.compile("([A-Za-z0-9\\-_]+)(|([A-Za-z0-9\\-_]+))*")
-            .asPredicate();
+    private static final Predicate<String> PATTERN_ARGUMENT_LITERAL = Pattern.compile(
+            "([A-Za-z0-9\\-_/]+)(|([A-Za-z0-9\\-_/]+))*"
+    ).asPredicate();
     private static final Predicate<String> PATTERN_ARGUMENT_REQUIRED = Pattern.compile("<([A-Za-z0-9\\-_]+)>")
             .asPredicate();
     private static final Predicate<String> PATTERN_ARGUMENT_OPTIONAL = Pattern.compile("\\[([A-Za-z0-9\\-_]+)]")

cloud-annotations/src/test/java/org/incendo/cloud/annotations/issue/Issue450.java

@@ -0,0 +1,73 @@
+//
+// MIT License
+//
+// Copyright (c) 2024 Incendo
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+package org.incendo.cloud.annotations.issue;
+
+import org.incendo.cloud.CommandManager;
+import org.incendo.cloud.annotations.AnnotationParser;
+import org.incendo.cloud.annotations.Command;
+import org.incendo.cloud.annotations.TestCommandManager;
+import org.incendo.cloud.annotations.TestCommandSender;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test for https://github.com/Incendo/cloud/issues/450.
+ */
+class Issue450 {
+
+    private CommandManager<TestCommandSender> manager;
+    private AnnotationParser<TestCommandSender> annotationParser;
+
+    @BeforeEach
+    void setup() {
+        this.manager = new TestCommandManager();
+        this.annotationParser = new AnnotationParser<>(
+                this.manager,
+                TestCommandSender.class
+        );
+    }
+
+    @Test
+    void testPrefixedAlias() {
+        // Act
+        this.annotationParser.parse(new TestCommandClass());
+
+        // Assert
+        this.manager.commandExecutor().executeCommand(
+                new TestCommandSender(),
+                "/command"
+        ).join();
+        this.manager.commandExecutor().executeCommand(
+                new TestCommandSender(),
+                "/cmd"
+        ).join();
+    }
+
+    private static class TestCommandClass {
+
+        @Command("/command|/cmd")
+        public void testCommand() {
+        }
+    }
+}