have tests for visualization and ubl convert. Insist in UTF-8 as charset in more cases.

library/src/test/java/org/mustangproject/ZUGFeRD/VisualizationTest.java

@@ -0,0 +1,69 @@
+
+/** **********************************************************************
+ *
+ * Copyright 2019 Jochen Staerk
+ *
+ * Use is subject to license terms.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy
+ * of the License at http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *********************************************************************** */
+package org.mustangproject.ZUGFeRD;
+
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+import org.mustangproject.CII.CIIToUBL;
+
+import javax.xml.transform.TransformerException;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class VisualizationTest extends ResourceCase {
+
+	public void testVisualizationBasic() {
+
+		// the writing part
+		CIIToUBL c2u = new CIIToUBL();
+		String sourceFilename = "factur-x.xml";
+		File input = getResourceAsFile(sourceFilename);
+
+		String expected = null;
+		String result = null;
+		try {
+			ZUGFeRDVisualizer zvi = new ZUGFeRDVisualizer();
+			result = zvi.visualize(input.getAbsolutePath());
+
+			File expectedResult=getResourceAsFile("factur-x.html");
+			expected = new String(Files.readAllBytes(expectedResult.toPath()), StandardCharsets.UTF_8);
+
+			BufferedWriter writer = new BufferedWriter(new FileWriter("C:\\Users\\jstaerk\\Desktop\\factur-x.html"));
+			writer.write(result);
+			writer.close();
+
+		} catch (TransformerException e) {
+			fail("Exception should not happen: "+e.getMessage());
+		} catch (IOException e) {
+			fail("Exception should not happen: "+e.getMessage());
+		}
+
+
+
+		assertNotNull(result);
+		// Reading ZUGFeRD
+		assertEquals(expected, result);
+	}
+}