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-rw-r--r--tests/Makefile.am4
-rw-r--r--tests/gc-concurrent.builder.sh9
-rw-r--r--tests/gc-concurrent.nix.in25
-rw-r--r--tests/gc-concurrent.sh19
4 files changed, 56 insertions, 1 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f58dfa48608c..53ecfe1fb7d7 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -34,10 +34,11 @@ fallback.sh: fallback.nix
 nix-push.sh: dependencies.nix
 nix-pull.sh: dependencies.nix
 gc.sh: dependencies.nix
+gc-concurrent.sh: gc-concurrent.nix
 
 TESTS = init.sh hash.sh lang.sh simple.sh dependencies.sh locking.sh parallel.sh \
   build-hook.sh substitutes.sh substitutes2.sh fallback.sh nix-push.sh gc.sh \
-  verify.sh nix-pull.sh
+  gc-concurrent.sh verify.sh nix-pull.sh
 
 XFAIL_TESTS =
 
@@ -54,5 +55,6 @@ EXTRA_DIST = $(TESTS) \
   build-hook.nix.in build-hook.hook.sh \
   substitutes.nix.in substituter.sh \
   substitutes2.nix.in substituter2.sh \
+  gc-concurrent.nix.in gc-concurrent.builder.sh \
   fallback.nix.in \
   $(wildcard lang/*.nix) $(wildcard lang/*.exp)
diff --git a/tests/gc-concurrent.builder.sh b/tests/gc-concurrent.builder.sh
new file mode 100644
index 000000000000..561c2292e98f
--- /dev/null
+++ b/tests/gc-concurrent.builder.sh
@@ -0,0 +1,9 @@
+export PATH=/bin:/usr/bin:$PATH
+
+mkdir $out
+echo $(cat $input1/foo)$(cat $input2/bar) > $out/foobar
+
+sleep 5
+mkdir $out || true
+
+ln -s $input2 $out/input-2
\ No newline at end of file
diff --git a/tests/gc-concurrent.nix.in b/tests/gc-concurrent.nix.in
new file mode 100644
index 000000000000..0d62849bc52f
--- /dev/null
+++ b/tests/gc-concurrent.nix.in
@@ -0,0 +1,25 @@
+let {
+
+  input1 = derivation {
+    name = "dependencies-input-1";
+    system = "@system@";
+    builder = "@shell@";
+    args = ["-e" "-x" ./dependencies.builder1.sh];
+  };
+
+  input2 = derivation {
+    name = "dependencies-input-2";
+    system = "@system@";
+    builder = "@shell@";
+    args = ["-e" "-x" ./dependencies.builder2.sh];
+  };
+
+  body = derivation {
+    name = "gc-concurrent";
+    system = "@system@";
+    builder = "@shell@";
+    args = ["-e" "-x" ./gc-concurrent.builder.sh];
+    inherit input1 input2;
+  };
+
+}
\ No newline at end of file
diff --git a/tests/gc-concurrent.sh b/tests/gc-concurrent.sh
new file mode 100644
index 000000000000..d85c609825ee
--- /dev/null
+++ b/tests/gc-concurrent.sh
@@ -0,0 +1,19 @@
+storeExpr=$($TOP/src/nix-instantiate/nix-instantiate gc-concurrent.nix)
+outPath=$($TOP/src/nix-store/nix-store -q $storeExpr)
+
+
+# Start a build in the background.
+$TOP/src/nix-store/nix-store -rvv "$storeExpr" &
+pid=$!
+
+# Run the garbage collector while the build is running.
+sleep 2
+$NIX_BIN_DIR/nix-collect-garbage
+
+# Wait for the build to finish.
+echo waiting for pid $pid to finish...
+wait $pid
+
+# Check that the root and its dependencies haven't been deleted.
+cat $outPath/foobar
+cat $outPath/input-2/bar