Fixed #215

 o Added JenkinsVersion which is capable of
   comparing different versions correctly.
   The implementation is taken from the
   Maven project which contains a class
   ComparableVersion which handled everything
   I need here.

.gitignore

@@ -4,3 +4,4 @@ target
 .classpath
 .project
 .settings
+test-output

ReleaseNotes.md

@@ -16,6 +16,30 @@
 
 ### API Changes
 
+  * [Fixed Issue 215][issue-215]
+
+    The JenkinsServer class will return `JenkinsVersion` instead of String if you
+    call `getJenkinsVersion()`.
+
+```java
+public class JenkinsVersion ... {
+    public boolean isGreaterThan(String version);
+    public boolean isGreaterOrEqual(String version);
+    public boolean isLessThan(String version);
+    public boolean isLessOrEqual(String version);
+    public boolean isEqualTo(String version);
+}
+```
+
+   The `JenkinsVersion` class can be used to compare different versions with
+   each other.
+
+```java
+JenkinsVersion jv = new JenkinsVersion("1.651.1");
+assertThat(jv.isGreaterThan("1.651.1")).isFalse();
+``` 
+
+
   * [Fixed issue 184][issue-184]
 
     Based on the differences between getting a TestReport for a MavenJob type and 
@@ -916,6 +940,7 @@ TestReport testReport = mavenJob.getLastSuccessfulBuild().getTestReport();
 [issue-207]: https://github.com/jenkinsci/java-client-api/issues/207
 [issue-209]: https://github.com/jenkinsci/java-client-api/issues/209
 [issue-211]: https://github.com/jenkinsci/java-client-api/issues/211
+[issue-215]: https://github.com/jenkinsci/java-client-api/issues/215
 [pull-123]: https://github.com/jenkinsci/java-client-api/pull/123
 [pull-149]: https://github.com/jenkinsci/java-client-api/pull/149
 [pull-158]: https://github.com/jenkinsci/java-client-api/pull/158

jenkins-client-it-docker/pom.xml

@@ -82,7 +82,7 @@
     </plugins>
   </build>
   <properties>
-    <docker.container.network>http://192.168.99.100:8080</docker.container.network>
+    <docker.container.network>http://127.0.0.1:8080</docker.container.network>
   </properties>
   <profiles>
     <profile>

jenkins-client-it-docker/src/test/java/com/offbytwo/jenkins/integration/NoExecutorStartedGetJobXmlIT.java

@@ -19,15 +19,31 @@ public void beforeMethod() throws IOException {
         jobXml = jenkinsServer.getJobXml("test");
     }
 
-    private static final String[] CONFIG_XML = { "<?xml version='1.0' encoding='UTF-8'?>", "<project>", "  <actions/>",
-            "  <description>This is the description with umlauts äöü</description>",
-            "  <keepDependencies>false</keepDependencies>", "  <properties/>", "  <scm class=\"hudson.scm.NullSCM\"/>",
-            "  <canRoam>true</canRoam>", "  <disabled>false</disabled>",
-            "  <blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>",
-            "  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>", "  <triggers/>",
-            "  <concurrentBuild>false</concurrentBuild>", "  <builders>", "    <hudson.tasks.Shell>",
-            "      <command>echo &quot;test&quot;</command>", "    </hudson.tasks.Shell>", "  </builders>",
-            "  <publishers/>", "  <buildWrappers/>", "</project>" };
+    //@formatter:off
+    private static final String[] CONFIG_XML = { 
+        "<?xml version='1.0' encoding='UTF-8'?>", 
+        "<project>", 
+        "  <actions/>",
+        "  <description>This is the description with umlauts äöü</description>",
+        "  <keepDependencies>false</keepDependencies>", 
+        "  <properties/>", 
+        "  <scm class=\"hudson.scm.NullSCM\"/>",
+        "  <canRoam>true</canRoam>", 
+        "  <disabled>false</disabled>",
+        "  <blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>",
+        "  <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>", 
+        "  <triggers/>",
+        "  <concurrentBuild>false</concurrentBuild>", 
+        "  <builders>", 
+        "    <hudson.tasks.Shell>",
+        "      <command>echo &quot;test&quot;</command>", 
+        "    </hudson.tasks.Shell>", 
+        "  </builders>",
+        "  <publishers/>", 
+        "  <buildWrappers/>", 
+        "</project>" 
+    };
+    //@formatter:on
 
     @Test
     public void getJobXmlShouldReturnTheExpectedConfigXml() {

jenkins-client-it-docker/src/test/java/com/offbytwo/jenkins/integration/NoExecutorStartedPluginManagerIT.java

@@ -3,13 +3,13 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.List;
 
 import org.testng.SkipException;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
 
+import com.offbytwo.jenkins.helper.JenkinsVersion;
 import com.offbytwo.jenkins.model.Plugin;
 import com.offbytwo.jenkins.model.PluginManager;
 
@@ -26,18 +26,17 @@ public void beforeMethod() throws IOException {
     @Test
     public void getPluginsShouldReturn9ForJenkins20() {
         // TODO: Check why there is such a difference in the number of Plugins?
-        if (!jenkinsServer.getVersion().equals("2.0")) {
-            throw new SkipException("Not Version 2.0");
+        if (jenkinsServer.getVersion().isLessThan("2.0")) {
+            throw new SkipException("Not Version 2.0 (" + jenkinsServer.getVersion() + ")");
         }
         assertThat(pluginManager.getPlugins()).hasSize(9);
     }
 
     @Test
     public void getPluginsShouldReturn27ForJenkins1651() {
-        List<String> asList = Arrays.asList("1.651", "1.651.1", "1.651.2", "1.651.3");
-        // TODO: Check why there is such a difference in the number of Plugins?
-        if (!asList.contains(jenkinsServer.getVersion())) {
-            throw new SkipException("Not Version 1.651");
+        JenkinsVersion jv = jenkinsServer.getVersion();
+        if (jv.isLessThan("1.651") && jv.isGreaterThan("1.651.3")) {
+            throw new SkipException("Not Version 1.651 (" + jv.toString() + ")");
         }
         assertThat(pluginManager.getPlugins()).hasSize(27);
     }
@@ -52,8 +51,8 @@ private Plugin createPlugin(String shortName, String version) {
     @Test
     public void getPluginsShouldReturnTheListOfInstalledPluginsForJenkins20() {
 
-        if (!jenkinsServer.getVersion().equals("2.0")) {
-            throw new SkipException("Not Version 2.0");
+        if (jenkinsServer.getVersion().isLessThan("2.0")) {
+            throw new SkipException("Not Version 2.0 (" + jenkinsServer.getVersion() + ")");
         }
 
         // TODO: The list of plugins is contained in the plugin.txt
@@ -91,12 +90,12 @@ public void getPluginsShouldReturnTheListOfInstalledPluginsForJenkins20() {
 
     @Test
     public void getPluginsShouldReturnTheListOfInstalledPluginsFor1651() {
-        List<String> asList = Arrays.asList("1.651", "1.651.1", "1.651.2", "1.651.3");
+        JenkinsVersion jv = jenkinsServer.getVersion();
+        if (jv.isLessThan("1.651") && jv.isGreaterThan("1.651.3")) {
+            throw new SkipException("Not Version 1.651 (" + jv + ")");
+        }
 
         // TODO: Check why there is such a difference in the number of Plugins?
-        if (!asList.contains(jenkinsServer.getVersion())) {
-            throw new SkipException("Not Version 1.651");
-        }
         // TODO: The list of plugins is contained in the plugin.txt
         // which should be read and used as base of comparison.
         // instead of maintaining at two locations.

jenkins-client/src/main/java/com/offbytwo/jenkins/JenkinsServer.java

@@ -26,6 +26,7 @@
 import com.google.common.collect.Maps;
 import com.offbytwo.jenkins.client.JenkinsHttpClient;
 import com.offbytwo.jenkins.client.util.EncodingUtils;
+import com.offbytwo.jenkins.helper.JenkinsVersion;
 import com.offbytwo.jenkins.model.Build;
 import com.offbytwo.jenkins.model.Computer;
 import com.offbytwo.jenkins.model.ComputerSet;
@@ -100,15 +101,16 @@ public boolean isRunning() {
     }
 
     /**
-     * @return The Jenkins version.
+     * @return {@link JenkinsVersion}
      */
-    public String getVersion() {
+    public JenkinsVersion getVersion() {
         if (client.getJenkinsVersion().isEmpty()) {
             // Force a request to get at least once
             // HttpHeader
             isRunning();
         }
-        return client.getJenkinsVersion();
+        JenkinsVersion jv = new JenkinsVersion(client.getJenkinsVersion());
+        return jv;
     }
 
     /**