Write test for catalog extension (see #204)

org.eclipse.lsp4xml/src/test/java/org/eclipse/lsp4xml/extensions/catalog/XMLCatalogExtensionTest.java

@@ -0,0 +1,37 @@
+package org.eclipse.lsp4xml.extensions.catalog;
+
+import static org.eclipse.lsp4xml.XMLAssert.c;
+import static org.eclipse.lsp4xml.XMLAssert.d;
+
+import org.eclipse.lsp4xml.XMLAssert;
+import org.eclipse.lsp4xml.commons.BadLocationException;
+import org.eclipse.lsp4xml.extensions.contentmodel.participants.XMLSchemaErrorCode;
+import org.junit.Test;
+
+/**
+ * Test of catalog completion/validation which doesn't declare DTD or XML
+ * Schema.
+ *
+ */
+public class XMLCatalogExtensionTest {
+
+	@Test
+	public void completion() throws BadLocationException {
+		String xml = "<?xml version=\"1.0\"?>\r\n" + //
+				"<catalog xmlns=\"urn:oasis:names:tc:entity:xmlns:xml:catalog\">\r\n" + //
+				"    |";
+
+		XMLAssert.testCompletionFor(xml, 16, c("public", "<public publicId=\"\" uri=\"\" />"));
+	}
+
+	@Test
+	public void diagnostics() throws BadLocationException {
+		String xml = "<?xml version=\"1.0\"?>\r\n" + //
+				"<catalog xmlns=\"urn:oasis:names:tc:entity:xmlns:xml:catalog\">\r\n" + //
+				"    <bad /> // error validation, because \"bad\" doesn't belong to the XML Schema catalog\r\n" + //
+				"</catalog> ";
+
+		XMLAssert.testDiagnosticsFor(xml, d(2, 5, 8, XMLSchemaErrorCode.cvc_complex_type_2_4_a), //
+				d(2, 12, 14, XMLSchemaErrorCode.cvc_complex_type_2_3));
+	}
+}