diff --git a/test/source.cpp b/test/source.cpp
new file mode 100644
index 0000000..4fa87ab
--- /dev/null
+++ b/test/source.cpp
@@ -0,0 +1,40 @@
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <sdeventplus/source.hpp>
+#include <sdeventplus/test/sdevent.hpp>
+
+namespace sdeventplus
+{
+namespace
+{
+
+using testing::Return;
+
+class SourceTest : public testing::Test
+{
+  protected:
+    testing::StrictMock<SdEventMock> mock;
+    sd_event_source *const expected_source =
+        reinterpret_cast<sd_event_source *>(1234);
+};
+
+TEST_F(SourceTest, NewSourceRef)
+{
+    EXPECT_CALL(mock, sd_event_source_ref(expected_source))
+        .WillOnce(Return(expected_source));
+    Source source(expected_source, &mock);
+
+    EXPECT_CALL(mock, sd_event_source_unref(expected_source))
+        .WillOnce(Return(nullptr));
+}
+
+TEST_F(SourceTest, NewSourceNoRef)
+{
+    Source source(expected_source, std::false_type(), &mock);
+
+    EXPECT_CALL(mock, sd_event_source_unref(expected_source))
+        .WillOnce(Return(nullptr));
+}
+
+} // namespace
+} // namespace sdeventplus