Commit 1d6b316c authored by Xavier Thompson's avatar Xavier Thompson

jinja2: Prevent 'once' from overwriting 'rendered'

See merge request !5
parent 065564b0
......@@ -555,3 +555,40 @@ Removing the canary allows template to be re-rendered::
>>> cat('foo_once')
dummy
It's also possible to use the same file for ``rendered`` and ``once``::
>>> write('buildout.cfg',
... '''
... [buildout]
... parts = template
...
... [template]
... recipe = slapos.recipe.template:jinja2
... template = inline:initial content
... rendered = rendered
... once = ${:rendered}
... ''')
>>> run_buildout() # doctest: +ELLIPSIS
Uninstalling template.
Installing template.
The template install returned None. A path or iterable os paths should be returned.
Template was rendered::
>>> cat('rendered')
initial content
When buildout options are modified, the template will not be rendered again::
>>> with open('buildout.cfg', 'a') as f:
... f.writelines(['template = inline:something different'])
>>> run_buildout()
Uninstalling template.
Installing template.
The template install returned None. A path or iterable os paths should be returned.
Even though we used a different template, the file still contain the first template::
>>> cat('rendered')
initial content
......@@ -266,7 +266,7 @@ class Recipe(object):
finally:
os.close(fd)
if self.once:
open(self.once, 'wb').close()
open(self.once, 'ab').close()
return
return self.rendered
......
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