handle: Support for releasing management of values

Sometimes we want to be able to break the value out of the container and
unmanage it.

Change-Id: I1ded8571561760f7adf8bbf9a24cf21c989e4898
Signed-off-by: William A. Kennington III <wak@google.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/test/handle/managed.cpp b/test/handle/managed.cpp
index b3ba6a6..155ba59 100644
--- a/test/handle/managed.cpp
+++ b/test/handle/managed.cpp
@@ -48,10 +48,13 @@ TEST_F(ManagedHandleTest, EmptyNoStorage)
     SimpleHandle h(std::nullopt);
     EXPECT_FALSE(h);
     EXPECT_THROW(h.value(), std::bad_optional_access);
+    EXPECT_THROW((void)h.release(), std::bad_optional_access);
     h.reset();
     EXPECT_FALSE(h.has_value());
     EXPECT_THROW(h.value(), std::bad_optional_access);
+    EXPECT_THROW((void)h.release(), std::bad_optional_access);
     EXPECT_EQ(std::nullopt, h.maybe_value());
+    EXPECT_EQ(std::nullopt, h.maybe_release());
 }
 
 TEST_F(ManagedHandleTest, EmptyWithStorage)
@@ -164,6 +167,24 @@ TEST_F(ManagedHandleTest, ResetNewPopulatedWithStorage)
     dropped.clear();
 }
 
+TEST_F(ManagedHandleTest, Release)
+{
+    constexpr int expected = 3;
+    int val = expected;
+    SimpleHandle h(std::move(val));
+    EXPECT_EQ(expected, h.release());
+    EXPECT_FALSE(h);
+}
+
+TEST_F(ManagedHandleTest, MaybeRelease)
+{
+    constexpr int expected = 3;
+    int val = expected;
+    SimpleHandle h(std::move(val));
+    EXPECT_EQ(expected, h.maybe_release());
+    EXPECT_FALSE(h);
+}
+
 TEST_F(ManagedHandleTest, MoveConstructWithStorage)
 {
     constexpr int expected = 3;