fixup tests in README.

README.rst

@@ -340,13 +340,6 @@ erase your local modifications by specifying the "develop" flag::
   repository = https://example.net/example.git/
   develop = true
 
-Specific git binary
-~~~~~~~~~~~~~~~~~~~
-
-The default git command is `git`, if for a any reason you don't
-have git in your path, you can specify git binary path with `git-command`
-option::
-
   >>> cd(sample_buildout)
   >>> write(sample_buildout, 'buildout.cfg',
   ... """
@@ -374,12 +367,26 @@ repository::
   >>> cd(sample_buildout)
   >>> print system(buildout)
   Updating git-clone.
-  Fetching origin
 
   >>> cd(sample_buildout, 'parts', 'git-clone')
   >>> print system('cat setup.py')
   foo
 
+Then, when update occurs, nothing is done::
+
+  >>> cd(sample_buildout, 'parts', 'git-clone')
+  >>> print system('echo kept > local_change')
+
+  >>> print system('git remote add broken http://git.erp5.org/repos/nowhere')
+  ...
+
+  >>> cd(sample_buildout)
+  >>> print system(buildout)
+  Updating git-clone.
+  >>> cd(sample_buildout, 'parts', 'git-clone')
+  >>> print system('cat local_change')
+  kept
+
 In case of uninstall, buildout will keep the repository directory::
 
   >>> cd(sample_buildout)
@@ -403,33 +410,12 @@ In case of uninstall, buildout will keep the repository directory::
   Installing git-clone.
   destination directory already exists.
 
-If an error occurs during update, the error is catched to prevent buildout
-behavior of deleting parts it failed to update. One type of possible error is
-fetching from a non existant remote::
-  >>> write(sample_buildout, 'buildout.cfg',
-  ... """
-  ... [buildout]
-  ... parts = git-clone
-  ...
-  ... [git-clone]
-  ... recipe = slapos.recipe.build:gitclone
-  ... repository = http://git.erp5.org/repos/slapos.recipe.build.git
-  ... """)
-  >>> print system(buildout)
-  Installing git-clone.
-  ...
-  >>> cd(sample_buildout, 'parts', 'git-clone')
-  >>> print system('echo kept > local_change')
-  >>> print system('git remote add broken https://git.erp5.org/repos/nowhere')
-  ...
-  >>> print system(buildout)
-  Updating git-clone.
-  ...
-  Unable to update:
-  ...
-  >>> print system('cat local_change')
-  kept
+Specific git binary
+~~~~~~~~~~~~~~~~~~~
 
+The default git command is `git`, if for a any reason you don't
+have git in your path, you can specify git binary path with `git-command`
+option.
 
 Ignore SSL certificate
 ~~~~~~~~~~~~~~~~~~~~~~