Tests: Move AK tests to Tests/AK

1 files changed, 23 insertions, 0 deletions

diff --git a/Tests/AK/TestBitCast.cpp b/Tests/AK/TestBitCast.cpp
new file mode 100644
index 0000000000..baf270f9b6
--- /dev/null
+++ b/Tests/AK/TestBitCast.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <AK/BitCast.h>
+
+template<typename A, typename B>
+void check_cast_both_ways(const A& a, const B& b)
+{
+    EXPECT_EQ((bit_cast<A, B>(b)), a);
+    EXPECT_EQ((bit_cast<B, A>(a)), b);
+}
+
+TEST_CASE(double_int_conversion)
+{
+    check_cast_both_ways(static_cast<u64>(0), 0.0);
+    check_cast_both_ways(static_cast<u64>(1) << 63, -0.0);
+    check_cast_both_ways(static_cast<u64>(0x4172f58bc0000000), 19880124.0);
+}