Add a new tests for copying components.

tests/CMakeLists.txt

@@ -1,4 +1,5 @@
 set(TEST_SOURCES
+component_copy.cpp
 dep_canonicalization.cpp
 dependency_loop.cpp
 explicit_provider_injection.cpp

tests/component_copy.cpp

@@ -0,0 +1,39 @@
+// expect-success
+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fruit/fruit.h>
+
+using fruit::Component;
+using fruit::Injector;
+
+struct X {
+  INJECT(X()) = default;
+};
+
+fruit::Component<X> getComponent() {
+  auto c = fruit::createComponent();
+  auto copy = c;
+  return copy;
+}
+
+int main() {
+  Component<X> component = getComponent();
+  Injector<X> injector(component);
+  injector.get<X*>();
+
+  return 0;
+}