bindings: cxx: tests: add a test-case for reading multiple line events

Extend the test coverage of C++ bindings with tests of reading of
multiple line events at once.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/bindings/cxx/tests/tests-event.cpp b/bindings/cxx/tests/tests-event.cpp
index 87133339b435f9475b146500e64b515307e0b401..63b6cc5f2f48e77f0567cfdc78c59b6750bbae5a 100644 (file)
--- a/bindings/cxx/tests/tests-event.cpp
+++ b/bindings/cxx/tests/tests-event.cpp
@@ -8,6 +8,7 @@
 #include <catch2/catch.hpp>
 #include <gpiod.hpp>
 #include <poll.h>
+#include <thread>
 
 #include "gpio-mockup.hpp"
 
@@ -217,3 +218,33 @@ TEST_CASE("It's possible to read values from lines requested for events", "[even
                REQUIRE(line.get_value() == 0);
        }
 }
+
+TEST_CASE("It's possible to read more than one line event", "[event][line]")
+{
+       mockup::probe_guard mockup_chips({ 8 });
+       ::gpiod::chip chip(mockup::instance().chip_name(0));
+       auto line = chip.get_line(4);
+       ::gpiod::line_request config;
+
+       config.consumer = consumer.c_str();
+       config.request_type = ::gpiod::line_request::EVENT_BOTH_EDGES;
+
+       line.request(config);
+
+       mockup::instance().chip_set_pull(0, 4, 1);
+       ::std::this_thread::sleep_for(::std::chrono::milliseconds(10));
+       mockup::instance().chip_set_pull(0, 4, 0);
+       ::std::this_thread::sleep_for(::std::chrono::milliseconds(10));
+       mockup::instance().chip_set_pull(0, 4, 1);
+       ::std::this_thread::sleep_for(::std::chrono::milliseconds(10));
+
+       auto events = line.event_read_multiple();
+
+       REQUIRE(events.size() == 3);
+       REQUIRE(events.at(0).event_type == ::gpiod::line_event::RISING_EDGE);
+       REQUIRE(events.at(1).event_type == ::gpiod::line_event::FALLING_EDGE);
+       REQUIRE(events.at(2).event_type == ::gpiod::line_event::RISING_EDGE);
+       REQUIRE(events.at(0).source == line);
+       REQUIRE(events.at(1).source == line);
+       REQUIRE(events.at(2).source == line);
+}