diff --git a/src/lib/diff/test-mutation-target.hpp b/src/lib/diff/test-mutation-target.hpp
index 42cf8c6b9..cb4d17bd7 100644
--- a/src/lib/diff/test-mutation-target.hpp
+++ b/src/lib/diff/test-mutation-target.hpp
@@ -35,7 +35,7 @@
  ** 
  ** @todo WIP 2/2016
  ** 
- ** @see TreeManipulationBinding_test
+ ** @see TreeMutatorBinding_test
  ** @see TreeMutator
  ** 
  */
@@ -195,7 +195,7 @@ namespace diff{
    * »External Tree Description« reflecting the actual data structure,
    * as can be inferred through listening to all handled diff mutation primitives.
    * Besides, each of these primitives is recorded in the embedded \ref EventLog.
-   * @see TreeManipulationBinding_test::mutateDummy()
+   * @see TreeMutatorBinding_test::mutateDummy()
    */
   class TestMutationTarget
     : boost::noncopyable
diff --git a/tests/15library.tests b/tests/15library.tests
index 1e44e52ed..fcc62a16e 100644
--- a/tests/15library.tests
+++ b/tests/15library.tests
@@ -168,6 +168,19 @@ return: 0
 END
 
 
+TEST "Diff: Generic recursive mutation with closure binding" TreeMutator_test <<END
+out: concrete TreeMutator .+Builder<ChangeOperation<TreeMutator, test::TreeMutator_test::simpleAttributeBinding().+lambda\(string\).+> >
+out-lit: "data" closure received something that would be acceptable
+out-lit: localData changed to: that would be acceptable
+return: 0
+END
+
+
+TEST "Diff: mapping of changes onto opaque tree data" TreeMutatorBinding_test <<END
+return: 0
+END
+
+
 TEST "A Digxel (numeric component)" Digxel_test <<END
 out-lit: empty____## +0.0 ##
 out-lit: value____##-88.8 ##
@@ -287,19 +300,6 @@ return: 0
 END
 
 
-PLANNED "Generic mapping of changes to tree data" TreeManipulationBinding_test <<END
-return: 0
-END
-
-
-TEST "Generic recursive mutation with closure binding" TreeMutator_test <<END
-out: concrete TreeMutator .+Builder<ChangeOperation<TreeMutator, test::TreeMutator_test::simpleAttributeBinding().+lambda\(string\).+> >
-out-lit: "data" closure received something that would be acceptable
-out-lit: localData changed to: that would be acceptable
-return: 0
-END
-
-
 TEST "HashGenerator_test" HashGenerator_test <<END
 return: 0
 END
diff --git a/tests/library/diff/diff-virtualised-application-test.cpp b/tests/library/diff/diff-virtualised-application-test.cpp
index 7419e6d88..096e0dc94 100644
--- a/tests/library/diff/diff-virtualised-application-test.cpp
+++ b/tests/library/diff/diff-virtualised-application-test.cpp
@@ -84,7 +84,7 @@ namespace test{
    * @todo this test defines a goal!! What has to be done, is to invent some test data structure and then run the exiting diffs against it. This requires the TreeMutator implementation to be finished!!!
    * @todo 5/16 adjust the diff applied here to conform precisely to the diff used in TreeMutatorBinding_test !!!!! 
    * 
-   * @see TreeManipulationBinding_test coverage of the "building blocks"
+   * @see TreeMutatorBinding_test coverage of the "building blocks"
    * @see DiffTreeApplication_test generic variant of tree diff application
    * @see TreeMutator_test base operations of the adapter
    * @see tree-diff-mutator-binding.hpp
diff --git a/tests/library/diff/tree-manipulation-binding-test.cpp b/tests/library/diff/tree-mutator-binding-test.cpp
similarity index 99%
rename from tests/library/diff/tree-manipulation-binding-test.cpp
rename to tests/library/diff/tree-mutator-binding-test.cpp
index a51a453cd..5ca773060 100644
--- a/tests/library/diff/tree-manipulation-binding-test.cpp
+++ b/tests/library/diff/tree-mutator-binding-test.cpp
@@ -1,5 +1,5 @@
 /*
-  TreeManipulationBinding(Test)  -  techniques to map generic changes to concrete tree shaped data
+  TreeMutatorBinding(Test)  -  techniques to map generic changes onto concrete tree shaped data
 
   Copyright (C)         Lumiera.org
     2016,               Hermann Vosseler <Ichthyostega@web.de>
@@ -155,7 +155,7 @@ namespace test{
    * @see GenNodeBasic_test
    * @see AbstractTangible_test::mutate()
    */
-  class TreeManipulationBinding_test : public Test
+  class TreeMutatorBinding_test : public Test
     {
       
       virtual void
@@ -671,7 +671,7 @@ namespace test{
   
   
   /** Register this test class... */
-  LAUNCHER (TreeManipulationBinding_test, "unit common");
+  LAUNCHER (TreeMutatorBinding_test, "unit common");