Try again to get test sources available.

ide/Feature org.codehaus.groovy.eclipse.sdk/feature.xml

@@ -51,6 +51,14 @@
          id="org.codehaus.groovy18.feature"
          version="0.0.0"/>
 
+   <includes
+         id="org.codehaus.groovy.alltests.feature"
+         version="0.0.0"/>
+
+   <includes
+         id="org.codehaus.groovy.alltests.feature.source"
+         version="0.0.0"/>
+
    <includes
          id="org.codehaus.groovy17.feature"
          version="0.0.0"/>

ide/Site Groovy/site.xml

@@ -22,6 +22,12 @@
    <feature url="features/org.codehaus.groovy.m2eclipse.source_0.0.0.qualifier.jar" id="org.codehaus.groovy.m2eclipse.source" version="0.0.0.qualifier">
       <category name="org.codehaus.groovy.m2eclipse"/>
    </feature>
+   <feature url="features/org.codehaus.groovy.alltests.feature.source_0.0.0.qualifier.jar" id="org.codehaus.groovy.alltests.feature.source" version="0.0.0.qualifier">
+      <category name="org.codehaus.groovy.sdk"/>
+   </feature>
+   <feature url="features/org.codehaus.groovy.alltests.feature_0.0.0.qualifier.jar" id="org.codehaus.groovy.alltests.feature" version="0.0.0.qualifier">
+      <category name="org.codehaus.groovy.sdk"/>
+   </feature>
    <feature url="features/org.codehaus.groovy17.feature_0.0.0.qualifier.jar" id="org.codehaus.groovy17.feature" version="0.0.0.qualifier"/>
    <category-def name="org.codehaus.groovy.eclipse.sdk" label="Groovy Eclipse SDK (Optional)">
       <description>