Don't let pristine-tar spew on stderr

Capture its output and only dump it on failure. This makes "gbp
import-orig" and test runs less verbose.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/test_PristineTar.py b/tests/test_PristineTar.py
index e837ef8..1e7f2dc 100644
--- a/tests/test_PristineTar.py
+++ b/tests/test_PristineTar.py
@@ -122,6 +122,22 @@ def test_pristine_tar_checkout():
     >>> repo.pristine_tar.checkout('upstream', '1.0', 'gzip', '..')
     """
 
+def test_pristine_tar_checkout_nonexistent():
+    """
+    Checkout a tarball that does not exist using pristine-tar
+
+    Methods tested:
+         - L{gbp.deb.pristinetar.DebianPristineTar.checkout}
+
+    >>> import gbp.deb.git
+    >>> repo = gbp.deb.git.DebianGitRepository(repo_dir)
+    >>> repo.pristine_tar.checkout('upstream', '1.1', 'gzip', '..')
+    Traceback (most recent call last):
+    ...
+    CommandExecFailed: Pristine-tar couldn't checkout "upstream_1.1.orig.tar.gz": fatal: Path 'upstream_1.1.orig.tar.gz.delta' does not exist in 'refs/heads/pristine-tar'
+    pristine-tar: git show refs/heads/pristine-tar:upstream_1.1.orig.tar.gz.delta failed
+    <BLANKLINE>
+    """
 
 def test_teardown():
     """