Add test for TXTFileFilter

refs #53

src/main/java/eva2/tools/TXTFileFilter.java

@@ -16,8 +16,7 @@ public class TXTFileFilter extends FileFilter {
     /**
      * Creates a new instance of TXTFileFilter
      */
-    public TXTFileFilter() {
-    }
+    public TXTFileFilter() {}
 
     @Override
     public boolean accept(java.io.File file) {

src/test/java/eva2/tools/TXTFileFilterTest.java

@@ -0,0 +1,26 @@
+package eva2.tools;
+
+import org.junit.Test;
+
+import java.io.File;
+
+import static org.junit.Assert.*;
+
+public class TXTFileFilterTest {
+
+    @Test
+    public void testAccept() throws Exception {
+        TXTFileFilter filter = new TXTFileFilter();
+        assertTrue(filter.accept(new File("foobar.txt")));
+
+        assertTrue(filter.accept(new File("foobar.TXT")));
+
+        assertFalse(filter.accept(new File("foobar.csv")));
+    }
+
+    @Test
+    public void testGetDescription() throws Exception {
+        TXTFileFilter filter = new TXTFileFilter();
+        assertNotNull(filter.getDescription());
+    }
+}