From 88cd2d41acb994684a3e4ead1b1676019f43b4b6 Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Thu, 8 Feb 2018 11:26:18 -0500
Subject: Add plugins to make Nix more extensible.

All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
---
 tests/local.mk              |  5 +++--
 tests/plugins.sh            |  7 +++++++
 tests/plugins/local.mk      |  9 +++++++++
 tests/plugins/plugintest.cc | 10 ++++++++++
 4 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 tests/plugins.sh
 create mode 100644 tests/plugins/local.mk
 create mode 100644 tests/plugins/plugintest.cc

(limited to 'tests')

diff --git a/tests/local.mk b/tests/local.mk
index e90b9f7da4ad..51bc09dd4322 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -22,7 +22,8 @@ nix_tests = \
   run.sh \
   brotli.sh \
   pure-eval.sh \
-  check.sh
+  check.sh \
+  plugins.sh
   # parallel.sh
 
 install-tests += $(foreach x, $(nix_tests), tests/$(x))
@@ -31,4 +32,4 @@ tests-environment = NIX_REMOTE= $(bash) -e
 
 clean-files += $(d)/common.sh
 
-installcheck: $(d)/common.sh
+installcheck: $(d)/common.sh $(d)/plugins/plugintest.so
diff --git a/tests/plugins.sh b/tests/plugins.sh
new file mode 100644
index 000000000000..6d18d1da0d18
--- /dev/null
+++ b/tests/plugins.sh
@@ -0,0 +1,7 @@
+source common.sh
+
+set -o pipefail
+
+res=$(nix eval '(builtins.constNull true)' --option plugin-files $PWD/plugins/plugintest.so)
+
+[ "$res"x = "nullx" ]
diff --git a/tests/plugins/local.mk b/tests/plugins/local.mk
new file mode 100644
index 000000000000..a5f19b087c82
--- /dev/null
+++ b/tests/plugins/local.mk
@@ -0,0 +1,9 @@
+libraries += plugintest
+
+plugintest_DIR := $(d)
+
+plugintest_SOURCES := $(d)/plugintest.cc
+
+plugintest_ALLOW_UNDEFINED := 1
+
+plugintest_EXCLUDE_FROM_LIBRARY_LIST := 1
diff --git a/tests/plugins/plugintest.cc b/tests/plugins/plugintest.cc
new file mode 100644
index 000000000000..f788c4814322
--- /dev/null
+++ b/tests/plugins/plugintest.cc
@@ -0,0 +1,10 @@
+#include "primops.hh"
+
+using namespace nix;
+
+static void prim_constNull (EvalState & state, const Pos & pos, Value ** args, Value & v)
+{
+    mkNull(v);
+}
+
+static RegisterPrimOp r("constNull", 1, prim_constNull);
-- 
cgit 1.4.1