Rename and add missing license header

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1754705 13f79535-47bb-0310-9956-ffa450edef68

src/testcases/org/apache/poi/ss/formula/functions/TestWeekdayFunc.java

@@ -1,3 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.formula.functions;
 
 import org.apache.poi.ss.formula.eval.*;
@@ -6,12 +23,7 @@ import org.junit.Test;
 import static org.junit.Assert.*;
 
 
-public class WeekdayFuncTest {
+public class TestWeekdayFunc {
-    /**
-     * der 1. Januar 2008 die fortlaufende Zahl 39.448, da dieser Tag nach 39.448 Tagen
-     * auf den 01.01.1900 folgt.
-     */
-
     @Test
     public void testEvaluate() throws Exception {
         assertEquals(2.0, ((NumberEval)WeekdayFunc.instance.evaluate(new ValueEval[]{new NumberEval(1.0)}, 0, 0)).getNumberValue(), 0.001);