* Negative caching, i.e. caching of build failures. Disabled by

  default.  This is mostly useful for Hydra.

1 files changed, 22 insertions, 0 deletions

diff --git a/tests/negative-caching.sh b/tests/negative-caching.sh
new file mode 100644
index 000000000000..e618e9443ef2
--- /dev/null
+++ b/tests/negative-caching.sh
@@ -0,0 +1,22 @@
+source common.sh
+
+clearStore
+
+set +e
+
+opts="--option build-cache-failure true --print-build-trace"
+
+# This build should fail, and the failure should be cached.
+log=$($nixbuild $opts negative-caching.nix -A fail 2>&1) && fail "should fail"
+echo "$log" | grep -q "@ build-failed" || fail "no build-failed trace"
+
+# Do it again.  The build shouldn't be tried again.
+log=$($nixbuild $opts negative-caching.nix -A fail 2>&1) && fail "should fail"
+echo "$log" | grep -q "FAIL" && fail "failed build not cached"
+echo "$log" | grep -q "@ build-failed .* cached" || fail "trace doesn't say cached"
+
+# Check that --keep-going works properly with cached failures.
+log=$($nixbuild $opts --keep-going negative-caching.nix -A depOnFail 2>&1) && fail "should fail"
+echo "$log" | grep -q "FAIL" && fail "failed build not cached (2)"
+echo "$log" | grep -q "@ build-failed .* cached" || fail "trace doesn't say cached (2)"
+echo "$log" | grep -q "@ build-succeeded .*-succeed" || fail "didn't keep going"