From 455a7b95776440a56fd5d545d3b9a01cbae1d8e7 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Tue, 28 Aug 2007 09:21:47 +0000
Subject: * Test case to show that parallel builds of different fixed-output  
 derivations that produce the same output path don't work properly   wrt
 locking.  This happens a lot in the build farm when fetchurl   derivations
 downloading the same file on different platforms are   executed in parallel
 and then copied back to the main machine.

---
 tests/fixed.nix.in | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'tests/fixed.nix.in')

diff --git a/tests/fixed.nix.in b/tests/fixed.nix.in
index ab2448871dbe..47eff91e059f 100644
--- a/tests/fixed.nix.in
+++ b/tests/fixed.nix.in
@@ -1,6 +1,6 @@
 rec {
 
-  f = builder: mode: algo: hash: derivation {
+  f2 = dummy: builder: mode: algo: hash: derivation {
     name = "fixed";
     system = "@system@";
     builder = "@shell@";
@@ -9,8 +9,11 @@ rec {
     outputHashAlgo = algo;
     outputHash = hash;
     PATH = "@testPath@";
+    inherit dummy;
   };
 
+  f = f2 "";
+
   good = [
     (f ./fixed.builder1.sh "flat" "md5" "8ddd8be4b179a529afa5f2ffae4b9858")
     (f ./fixed.builder1.sh "flat" "sha1" "a0b65939670bc2c010f4d5d6a0b3e4e4590fb92b")
@@ -35,4 +38,11 @@ rec {
     (f ./fixed.builder1.sh "flat" "md5" "ddd8be4b179a529afa5f2ffae4b9858")
   ];
 
+  # Test for building two derivations in parallel that produce the
+  # same output path because they're fixed-output derivations.
+  parallelSame = [
+    (f2 "foo" ./fixed.builder2.sh "flat" "md5" "3670af73070fa14077ad74e0f5ea4e42")
+    (f2 "bar" ./fixed.builder2.sh "flat" "md5" "3670af73070fa14077ad74e0f5ea4e42")
+  ];
+
 }
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