Adding tests for VersionComparator.

Fixes JENKINS-26701.

pom.xml

@@ -254,6 +254,18 @@
         </exclusion>
       </exclusions>
     </dependency>
+    <dependency>
+      <groupId>org.spockframework</groupId>
+      <artifactId>spock-core</artifactId>
+      <version>1.0-groovy-2.4</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.github.mifmif</groupId>
+      <artifactId>generex</artifactId>
+      <version>0.0.4</version>
+      <scope>test</scope>
+    </dependency>
 
   </dependencies>
 

src/main/java/hudson/plugins/jira/versionparameter/VersionComparator.java

@@ -21,7 +21,8 @@ public class VersionComparator implements Comparator<Version> {
 
     public int compare(Version rev1, Version rev2) {
         int result = 0;
-        boolean startWithoutLetters = true;
+        boolean rev1WithoutLetters = true;
+        boolean rev2WithoutLetters = true;
 
         List<String> listRev1 = Arrays.asList(rev1.getName().split("\\."));
         String oldRev1 = listRev1.get(0);
@@ -32,9 +33,13 @@ public int compare(Version rev1, Version rev2) {
         listRev1.set(0, getNumberVersion(listRev1.get(0)));
         listRev2.set(0, getNumberVersion(listRev2.get(0)));
 
-        if (oldRev1.equals(listRev1.get(0)) && oldRev2.equals(listRev2.get(0))) {
-            startWithoutLetters = false;
+        if (oldRev1.equals(listRev1.get(0))) {
+            rev1WithoutLetters = false;
         }
+        if (oldRev2.equals(listRev2.get(0))) {
+            rev2WithoutLetters = false;
+        }
+
 
         int lenRev1 = listRev1.size();
         int lenRev2 = listRev2.size();
@@ -58,10 +63,15 @@ public int compare(Version rev1, Version rev2) {
         if (result == 0) {
             if (lenRev1 > lenRev2) {
                 result = -1;
-            } else if (lenRev2 > lenRev1) {
-                result = 1;
-            } else if (startWithoutLetters) {
+            } else if (lenRev1 < lenRev2) {
                 result = 1;
+            } else {
+                if (rev1WithoutLetters && ! rev2WithoutLetters)
+                    result = -1;
+                else if (!rev1WithoutLetters && rev2WithoutLetters)
+                    result = 1;
+                else
+                    result = 0;
             }
 
         }

src/test/java/hudson/plugins/jira/versionparameter/VersionComparatorTest.groovy

@@ -0,0 +1,79 @@
+package hudson.plugins.jira.versionparameter
+
+import com.atlassian.jira.rest.client.api.domain.Version
+import spock.lang.*
+
+class VersionComparatorTest extends Specification {
+
+    void testComplexCompare() {
+        def input = [
+                "9.9.9.9.9",
+                "V-5.2.3",
+                "PDFREPORT-2.3.4",
+                "PDFREPORT-2.3",
+                "1.12.2.3.4",
+                "1.3.4",
+                "1.1.1.2",
+                "1.1.1.1"
+        ]
+        def expected = [
+                "1.1.1.1",
+                "1.1.1.2",
+                "1.3.4",
+                "1.12.2.3.4",
+                "9.9.9.9.9",
+                "PDFREPORT-2.3",
+                "PDFREPORT-2.3.4",
+                "V-5.2.3",
+        ]
+
+        SortedSet<Version> sorted = new TreeSet<Version>();
+        sorted.addAll(input);
+
+        assert sorted == expected;
+    }
+
+    def singleComparisonsTests() {
+
+        given:
+        def comparator = new VersionComparator();
+
+        when:
+        def o1 = new Version(null, null, v1, null, v1arch, v1rel, null)
+        def o2 = new Version(null, null, v2, null, v2arch, v2rel, null)
+
+        then:
+        comparator.compare(o1, o2) == expected
+
+        where:
+        v1                | v1rel | v1arch | v2          | v2rel | v2arch | expected
+        "1.1.1.1"         | false | false  | "1.1.1.1"   | false | false  | 0
+        "A-1.1.1.1"       | false | false  | "1.1.1.1"   | false | false  | -1
+        "1.1.1.1"         | false | false  | "A-1.1.1.1" | false | false  | 1
+        "1.1.1.1"         | false | false  | "1.1.1.1.1" | false | false  | 1
+        "1.1.1.1"         | false | false  | "1.1.1"     | false | false  | -1
+        "1.1.1.2"         | false | false  | "1.1.1.3"   | false | false  | 1
+        "2.2.2.1"         | false | false  | "1.1.1.2"   | false | false  | -1
+        "2.2.2"           | false | false  | "1.1.1.2"   | false | false  | -1
+        "2.0"             | false | false  | "1.0.15.3"  | false | false  | -1
+        "2.0.5.4"         | false | false  | "4.0"       | false | false  | 1
+        "1.12.1.1"        | false | false  | "1.1.1.2"   | false | false  | -1
+        "PDFREPORT-2.3.4" | false | false  | "1.2.3"     | false | false  | -1
+        "PDFREPORT-2.3.4" | false | false  | "4.5.6"     | false | false  | 1
+        "PDFREPORT-2.3.4" | false | false  | "x"         | false | false  | -1 //exception
+    }
+
+    def getNumberVersionTest() {
+        given:
+        def comp = new VersionComparator();
+
+        expect:
+        comp.getNumberVersion(v) == expect
+
+        where:
+        v                 | expect
+        "PDFREPORT-2.3.4" | "2.3.4"
+
+    }
+
+}