Remove tests for working with null refs

Refs should be completely omitted, and this is now the standard
behaviour, so there's little value in testing the behaviour separately.

3 files changed, 1 insertions, 80 deletions

diff --git a/yarns/branches-workspaces.yarn b/yarns/branches-workspaces.yarn
index b928f628..08627fe9 100644
--- a/yarns/branches-workspaces.yarn
+++ b/yarns/branches-workspaces.yarn
@@ -300,69 +300,6 @@ Creating a tag twice should fail.
     WHEN        the user attempts to tag the system branch called foo as test123
     THEN        morph failed
 
-Working with null repositories and refs
----------------------------------------
-
-It is convenient to not explicitly name the repository and branch of
-a stratum morphology, instead assuming it is the same as the current
-morphology.
-
-These can be checked out like normal system branches.
-
-    SCENARIO    check out an existing system branch with null refs
-    GIVEN       a workspace
-    AND         a git server
-    AND         null refs for local strata
-    WHEN        the user checks out the system branch called master
-    THEN        the system branch master is checked out
-
-Likewise we can also create new system branches from these, and we
-wouldn't need to worry about changing the system branch ref.
-
-
-    SCENARIO    branch off a system branch with null refs
-    GIVEN       a workspace
-    AND         a git server
-    AND         null refs for local strata
-    WHEN        the user creates a system branch called foo
-    THEN        the system branch foo is checked out
-
-When we edit a morphology with null refs, they stay null.
-
-    SCENARIO    editing with null refs
-    GIVEN       a workspace
-    AND         a git server
-    AND         null refs for local strata
-
-When creating the branch, the refs remain null.
-
-    WHEN        the user creates a system branch called foo
-    THEN        in branch foo, system test-system refs test-stratum in None
-
-After editing the stratum they remain null.
-
-    WHEN    the user edits the stratum test-stratum in the system test-system in branch foo
-    THEN    in branch foo, system test-system refs test-stratum in None
-
-Refs to chunks are still altered as usual
-
-    WHEN the user edits the chunk test-chunk in the stratum test-stratum in the system test-system in branch foo
-    THEN in branch foo, system test-system refs test-stratum in None
-    AND  in branch foo, stratum test-stratum refs test-chunk in foo
-    AND  the edited chunk test:test-chunk has git branch foo
-
-Petrifying also leaves null refs unmolested
-
-    SCENARIO    morph petrifies null refs
-    GIVEN       a workspace
-    AND         a git server
-    AND         null refs for local strata
-    WHEN        the user creates a system branch called foo
-    AND         the user pushes the system branch called foo to the git server
-    AND         remembering all refs in foo
-    AND         petrifying foo
-    THEN        in branch foo, system test-system refs test-stratum in None
-
 Generating a manifest works
 
     SCENARIO    morph generates a manifest
diff --git a/yarns/implementations.yarn b/yarns/implementations.yarn
index e3db6b10..2a46dfa2 100644
--- a/yarns/implementations.yarn
+++ b/yarns/implementations.yarn
@@ -318,17 +318,6 @@ have a morphology using the test architecture.
     run_in "$DATADIR/gits/morphs" git add "$MATCH_1.morph"
     run_in "$DATADIR/gits/morphs" git commit -m "Added $MATCH_1 and strata morphologies."
 
-Morphologies need to support having a null ref, which means look for the
-stratum in the same repository and ref. Testing this requires different
-morphologies.
-
-    IMPLEMENTS GIVEN null refs for local strata
-    nullify_local_refs test:morphs master \
-        "$DATADIR/gits/morphs/test-system.morph" \
-        "$DATADIR/gits/morphs/test-stratum.morph"
-    run_in "$DATADIR/gits/morphs" git add .
-    run_in "$DATADIR/gits/morphs" git commit -m "Use null refs."
-
 
 Implementation sections for system branch operations
 ----------------------------------------------------
diff --git a/yarns/morph.shell-lib b/yarns/morph.shell-lib
index 66abd076..31dcc7af 100644
--- a/yarns/morph.shell-lib
+++ b/yarns/morph.shell-lib
@@ -3,7 +3,7 @@
 # The shell functions in this library are meant to make writing IMPLEMENTS
 # sections for yarn scenario tests easier.
 
-# Copyright (C) 2013  Codethink Limited
+# Copyright (C) 2013-2014  Codethink Limited
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -152,11 +152,6 @@ assert_morphologies_are_petrified()
 }
 
 
-nullify_local_refs()
-{
-    "$SRCDIR/scripts/nullify-local-refs" "$@"
-}
-
 # Currently, yarn isn't setting $SRCDIR to point at the project source
 # directory. We simulate this here.