fix(tests): Construct valid command in MockTextDocumentService

Author: FlorianKroiss

org.eclipse.lsp4e.tests.mock/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Mock Language Server to test LSP4E
 Bundle-SymbolicName: org.eclipse.lsp4e.tests.mock
-Bundle-Version: 0.17.3.qualifier
+Bundle-Version: 0.17.4.qualifier
 Bundle-Vendor: Eclipse LSP4E
 Bundle-RequiredExecutionEnvironment: JavaSE-21
 Require-Bundle: org.eclipse.lsp4j,

org.eclipse.lsp4e.tests.mock/src/org/eclipse/lsp4e/tests/mock/MockTextDocumentService.java

@@ -216,7 +216,7 @@ public CompletableFuture<List<? extends CodeLens>> codeLens(CodeLensParams param
 		if (file.exists() && file.length() > 100) {
 			return CompletableFuture
 					.completedFuture(List.of(new CodeLens(new Range(new Position(1, 0), new Position(1, 1)),
-							new Command("Hi, I'm a CodeLens", null), null)));
+							new Command("Hi, I'm a CodeLens", "dummyCommand"), null)));
 		}
 		return CompletableFuture.completedFuture(Collections.emptyList());
 	}