From 371d1000657dd57f6a79e1eab5298008baeca2bf Mon Sep 17 00:00:00 2001
From: Zafar Khaja <zafarkhaja@gmail.com>
Date: Thu, 23 Jan 2014 18:49:27 +0400
Subject: [PATCH] Implement fluent interface for Version.Builder

---
 .../java/com/github/zafarkhaja/semver/Version.java   | 12 +++++++++---
 .../com/github/zafarkhaja/semver/VersionTest.java    | 11 +++++++++++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/main/java/com/github/zafarkhaja/semver/Version.java b/src/main/java/com/github/zafarkhaja/semver/Version.java
index 6cd3477..9d9a3a2 100644
--- a/src/main/java/com/github/zafarkhaja/semver/Version.java
+++ b/src/main/java/com/github/zafarkhaja/semver/Version.java
@@ -106,27 +106,33 @@ public class Version implements Comparable<Version> {
          * Sets the normal version.
          *
          * @param normal the string representation of the normal version
+         * @return this builder instance
          */
-        public void setNormalVersion(String normal) {
+        public Builder setNormalVersion(String normal) {
             this.normal = normal;
+            return this;
         }
 
         /**
          * Sets the pre-release version.
          *
          * @param preRelease the string representation of the pre-release version
+         * @return this builder instance
          */
-        public void setPreReleaseVersion(String preRelease) {
+        public Builder setPreReleaseVersion(String preRelease) {
             this.preRelease = preRelease;
+            return this;
         }
 
         /**
          * Sets the build metadata.
          *
          * @param build the string representation of the build metadata
+         * @return this builder instance
          */
-        public void setBuildMetadata(String build) {
+        public Builder setBuildMetadata(String build) {
             this.build = build;
+            return this;
         }
 
         /**
diff --git a/src/test/java/com/github/zafarkhaja/semver/VersionTest.java b/src/test/java/com/github/zafarkhaja/semver/VersionTest.java
index edae560..979b251 100644
--- a/src/test/java/com/github/zafarkhaja/semver/VersionTest.java
+++ b/src/test/java/com/github/zafarkhaja/semver/VersionTest.java
@@ -429,6 +429,17 @@ public class VersionTest {
             builder.setBuildMetadata("build");
             assertEquals(Version.valueOf("1.0.0-alpha+build"), builder.build());
         }
+
+        @Test
+        public void shouldImplementFluentInterface() {
+            Version.Builder builder = new Version.Builder();
+            Version version = builder
+                .setNormalVersion("1.0.0")
+                .setPreReleaseVersion("alpha")
+                .setBuildMetadata("build")
+                .build();
+            assertEquals(Version.valueOf("1.0.0-alpha+build"), version);
+        }
     }
 
     public static class BuildAwareOrderTest {