refact: add RegistryTest class

org.eclipse.tm4e.core/src/test/java/org/eclipse/tm4e/core/internal/parser/TMParserTest.java

@@ -207,16 +207,14 @@ public FileVisitResult visitFile(final Path file, final @Nullable BasicFileAttri
 				if (file.getFileName().toString().endsWith("tmLanguage.json")) {
 					try (var input = Files.newBufferedReader(file)) {
 						System.out.println("Parsing [" + file + "]...");
-						try {
-							final var grammar = TMParserJSON.INSTANCE.parse(input, RawGrammarReader.OBJECT_FACTORY);
-							count.incrementAndGet();
-							assertFalse(grammar.getScopeName().isBlank());
-							assertFalse(grammar.getPatterns().isEmpty());
-							assertNotNull(grammar.getFileTypes());
-							assertNotNull(grammar.getRepository());
-						} catch (final Exception ex) {
-							throw new RuntimeException(ex);
-						}
+						final var grammar = TMParserJSON.INSTANCE.parse(input, RawGrammarReader.OBJECT_FACTORY);
+						count.incrementAndGet();
+						assertFalse(grammar.getScopeName().isBlank());
+						assertFalse(grammar.getPatterns().isEmpty());
+						assertNotNull(grammar.getFileTypes());
+						assertNotNull(grammar.getRepository());
+					} catch (final Exception ex) {
+						throw new RuntimeException(ex);
 					}
 				}
 				return FileVisitResult.CONTINUE;

org.eclipse.tm4e.core/src/test/java/org/eclipse/tm4e/core/registry/RegistryTest.java

@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2023 Vegard IT GmbH and others.
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ * Sebastian Thomschke (Vegard IT) - initial implementation
+ */
+package org.eclipse.tm4e.core.registry;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.eclipse.jdt.annotation.Nullable;
+import org.junit.jupiter.api.MethodOrderer;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestMethodOrder;
+
+@TestMethodOrder(MethodOrderer.MethodName.class)
+class RegistryTest {
+
+	@Test
+	void testLanguagePackGrammars() throws IOException {
+		final var reg = new Registry();
+		final var count = new AtomicInteger();
+		Files.walkFileTree(Paths.get("../org.eclipse.tm4e.language_pack"), new SimpleFileVisitor<Path>() {
+			@Override
+			public FileVisitResult visitFile(final Path file, final @Nullable BasicFileAttributes attrs) throws IOException {
+				if (file.getFileName().toString().endsWith("tmLanguage.json")) {
+					try (var input = Files.newBufferedReader(file)) {
+						System.out.println("Parsing [" + file + "]...");
+						final var grammar = reg.addGrammar(IGrammarSource.fromFile(file));
+						count.incrementAndGet();
+						assertFalse(grammar.getScopeName().isBlank());
+						assertNotNull(grammar.getFileTypes());
+					}
+				}
+				return FileVisitResult.CONTINUE;
+			}
+		});
+		System.out.println("Successfully parsed " + count.intValue() + " grammars.");
+		assertTrue(count.intValue() > 10, "Only " + count.intValue() + " grammars found, expected more than 10!");
+	}
+}