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-rw-r--r--test/v4l2_videodevice/buffer_cache.cpp36
1 files changed, 36 insertions, 0 deletions
diff --git a/test/v4l2_videodevice/buffer_cache.cpp b/test/v4l2_videodevice/buffer_cache.cpp
index b3f2bec1..5a9aa219 100644
--- a/test/v4l2_videodevice/buffer_cache.cpp
+++ b/test/v4l2_videodevice/buffer_cache.cpp
@@ -126,6 +126,35 @@ public:
return TestPass;
}
+ int testIsEmpty(const std::vector<std::unique_ptr<FrameBuffer>> &buffers)
+ {
+ V4L2BufferCache cache(buffers.size());
+
+ if (!cache.isEmpty())
+ return TestFail;
+
+ for (auto const &buffer : buffers) {
+ FrameBuffer &b = *buffer.get();
+ cache.get(b);
+ }
+
+ if (cache.isEmpty())
+ return TestFail;
+
+ unsigned int i;
+ for (i = 0; i < buffers.size() - 1; i++)
+ cache.put(i);
+
+ if (cache.isEmpty())
+ return TestFail;
+
+ cache.put(i);
+ if (!cache.isEmpty())
+ return TestFail;
+
+ return TestPass;
+ }
+
int init() override
{
std::random_device rd;
@@ -204,6 +233,13 @@ public:
if (testHot(&cacheHalf, buffers, numBuffers / 2) != TestPass)
return TestFail;
+ /*
+ * Test that the isEmpty function reports the correct result at
+ * various levels of cache fullness.
+ */
+ if (testIsEmpty(buffers) != TestPass)
+ return TestFail;
+
return TestPass;
}