add test for GFF3Encoder

test/uk/ac/sanger/artemis/io/GFF3EncoderTest.java

+/* 
+ * This file is part of Artemis
+ *
+ * Copyright (C) 2014  Genome Research Limited
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+package uk.ac.sanger.artemis.io;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertEquals;
+import junit.framework.Assert;
+
+import org.junit.Test;
+import org.junit.Before;
+
+import uk.ac.sanger.artemis.io.GFF3Encoder;
+
+public class GFF3EncoderTest {
+  private GFF3Encoder enc;
+
+  @Before
+  public void setUp() {
+    enc = new GFF3Encoder();
+  }
+
+  @Test
+  /**
+   * Tests whether there are missing map characters.
+   */
+  public void testMapEqualLength() {
+    assertEquals(GFF3Encoder.mapChars.length, GFF3Encoder.mappedEscapes.length);
+  }
+
+  @Test
+  /**
+   * Tests whether the mapping is correct according to GFF3 spec.
+   */
+  public void testMapChars() {
+    assertEquals(enc.encode("%"), "%25");
+    assertEquals(enc.decode("%25"), "%");
+    assertEquals(enc.encode("&"), "%26");
+    assertEquals(enc.decode("%26"), "&");
+    assertEquals(enc.encode(","), "%2C");
+    assertEquals(enc.decode("%2C"), ",");
+    assertEquals(enc.encode(";"), "%3B");
+    assertEquals(enc.decode("%3B"), ";");
+    assertEquals(enc.encode("="), "%3D");
+    assertEquals(enc.decode("%3D"), "=");
+    assertEquals(enc.encode("\t"), "%09");
+    assertEquals(enc.decode("%09"), "\t");
+    assertEquals(enc.encode("\n"), "%0A");
+    assertEquals(enc.decode("%0A"), "\n");
+    assertEquals(enc.encode("\r"), "%0D");
+    assertEquals(enc.decode("%0D"), "\r");
+  }
+
+  @Test
+  /**
+   * Tests the decoding of escaped characters in GFF files.
+   */
+  public void testDecode() {
+    for (int i=0; i < GFF3Encoder.mappedEscapes.length; i++) {
+      assertEquals(enc.decode("test"+GFF3Encoder.mappedEscapes[i]+"foo"),
+                   "test"+GFF3Encoder.mapChars[i]+"foo");
+      assertEquals(enc.decode("test%"+GFF3Encoder.mappedEscapes[i]+"foo"),
+                   "test%"+GFF3Encoder.mapChars[i]+"foo");
+      assertEquals(enc.decode("test1"+GFF3Encoder.mappedEscapes[i]+"foo," +
+                              "test2"+GFF3Encoder.mappedEscapes[i]),
+                   "test1"+GFF3Encoder.mapChars[i]+"foo," + 
+                   "test2"+GFF3Encoder.mapChars[i]);
+    }
+  }
+
+  @Test
+  /**
+   * Tests the encoding of escaped characters in GFF files.
+   */
+  public void testEncode() {
+    for (int i=0; i < GFF3Encoder.mappedEscapes.length; i++) {
+      assertEquals(enc.encode("test"+GFF3Encoder.mapChars[i]+"foo"),
+                   "test"+GFF3Encoder.mappedEscapes[i]+"foo");
+      assertEquals(enc.encode("test%"+GFF3Encoder.mapChars[i]+"foo"),
+                   "test%25"+GFF3Encoder.mappedEscapes[i]+"foo");
+    }
+  }
+
+}