From 0981e010eda7aa872fe2c6ee83a1e20654fa69ef Mon Sep 17 00:00:00 2001
From: Alec Thomas <alec@swapoff.org>
Date: Mon, 30 Mar 2015 11:53:41 +1100
Subject: Test that components aren't reused on deleted entities.

See #92.
---
 CMakeLists.txt         |  2 +-
 entityx/Entity_test.cc | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 mode change 100755 => 100644 CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
old mode 100755
new mode 100644
index c026e6c..206acea
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ set(ENTITYX_VERSION ${ENTITYX_MAJOR_VERSION}.${ENTITYX_MINOR_VERSION}.${ENTITYX_
 
 include_directories(${CMAKE_CURRENT_LIST_DIR})
 
-set(ENTITYX_BUILD_TESTING false CACHE BOOL "Enable building of tests.")
+set(ENTITYX_BUILD_TESTING true CACHE BOOL "Enable building of tests.")
 set(ENTITYX_RUN_BENCHMARKS false CACHE BOOL "Run benchmarks (in conjunction with -DENTITYX_BUILD_TESTING=1).")
 set(ENTITYX_MAX_COMPONENTS 64 CACHE STRING "Set the maximum number of components.")
 set(ENTITYX_DT_TYPE double CACHE STRING "The type used for delta time in EntityX update methods.")
diff --git a/entityx/Entity_test.cc b/entityx/Entity_test.cc
index 6d0dfa1..7ea4231 100644
--- a/entityx/Entity_test.cc
+++ b/entityx/Entity_test.cc
@@ -578,3 +578,17 @@ TEST_CASE("TestComponentDestructorCalledWhenEntityDestroyed") {
   test.destroy();
   REQUIRE(freed == true);
 }
+
+TEST_CASE_METHOD(EntityManagerFixture, "TestComponentsRemovedFromReusedEntities") {
+  Entity a = em.create();
+  Entity::Id aid = a.id();
+  a.assign<Position>(1, 2);
+  a.destroy();
+
+  Entity b = em.create();
+  Entity::Id bid = b.id();
+
+  REQUIRE(aid.index() == bid.index());
+  REQUIRE(!b.has_component<Position>());
+  b.assign<Position>(3, 4);
+}
-- 
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