bindings: cxx: tests: add a test case for chip::unwatch_line_info()

We don't have any test case for chip::unwatch_line_info() so add a simple
one similar to the one we have for the core C library.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/bindings/cxx/tests/tests-info-event.cpp b/bindings/cxx/tests/tests-info-event.cpp
index 2ec51760684f8afb0812ac50c0a1f02ec88d5f1e..ee3149675b05252e8f93ef580e3ad334e51ea4e0 100644 (file)
--- a/bindings/cxx/tests/tests-info-event.cpp
+++ b/bindings/cxx/tests/tests-info-event.cpp
@@ -103,6 +103,30 @@ TEST_CASE("Lines can be watched", "[info-event][chip]")
        }
 }
 
+TEST_CASE("line info can be unwatched", "[info-event]")
+{
+       auto sim = make_sim()
+               .set_num_lines(8)
+               .build();
+
+       ::gpiod::chip chip(sim.dev_path());
+
+       auto info = chip.watch_line_info(5);
+
+       auto request = chip
+               .prepare_request()
+               .add_line_settings(5, ::gpiod::line_settings())
+               .do_request();
+
+       REQUIRE(chip.wait_info_event(::std::chrono::seconds(1)));
+       auto event = chip.read_info_event();
+       REQUIRE(event.type() == event_type::LINE_REQUESTED);
+
+       chip.unwatch_line_info(5);
+
+       REQUIRE_FALSE(chip.wait_info_event(::std::chrono::milliseconds(100)));
+}
+
 TEST_CASE("info_event can be copied and moved", "[info-event]")
 {
        auto sim = make_sim().build();