toSnapshot() and its test added

Author: host6

src/main/java/org/scm4j/commons/Version.java

@@ -144,6 +144,10 @@ public String toSnapshotString() {
 		return prefix + minor + (patch.isEmpty() ? "" : "." + patch) + SNAPSHOT;
 	}
 
+	public Version toSnapshot() {
+		return new Version(toSnapshotString());
+	}
+
 	public String toReleaseString() {
 		if (!StringUtils.isNumeric(minor)) {
 			return verStr;

src/test/java/org/scm4j/commons/VersionTest.java

@@ -1,14 +1,9 @@
 package org.scm4j.commons;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.junit.Test;
 
-import nl.jqno.equalsverifier.EqualsVerifier;
+import static org.junit.Assert.*;
 
 public class VersionTest {
 
@@ -172,4 +167,13 @@ public void toSnapshotString() {
 		assertEquals("11-SNAPSHOT", new Version("11").toSnapshotString());
 		assertEquals("asd-SNAPSHOT", new Version("asd").toSnapshotString());
 	}
+
+	@Test
+	public void toSnapshot() {
+		assertEquals(new Version("11.21.31.41-SNAPSHOT"), new Version("11.21.31.41").toSnapshot());
+		assertEquals(new Version("11.21.31.41-SNAPSHOT"), new Version("11.21.31.41-SNAPSHOT").toSnapshot());
+		assertEquals(new Version("-SNAPSHOT"), new Version("").toSnapshot());
+		assertEquals(new Version("11-SNAPSHOT"), new Version("11").toSnapshot());
+		assertEquals(new Version("asd-SNAPSHOT"), new Version("asd").toSnapshot());
+	}
 }