intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 69 insertions, 0 deletions

diff --git a/util/system/hi_lo_ut.cpp b/util/system/hi_lo_ut.cpp
new file mode 100644
index 0000000000..850c12327d
--- /dev/null
+++ b/util/system/hi_lo_ut.cpp
@@ -0,0 +1,69 @@
+#include <util/system/hi_lo.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+
+#include "defaults.h"
+
+Y_UNIT_TEST_SUITE(HiLo) {
+    Y_UNIT_TEST(HiLo32) {
+        ui64 x = 0;
+        Lo32(x) = 18;
+        UNIT_ASSERT_VALUES_EQUAL(x, 18);
+
+        Hi32(x) = 33;
+        UNIT_ASSERT_VALUES_EQUAL(x, 141733920786);
+
+        const ui64 y = 0x33c06196e94c03ab;
+        UNIT_ASSERT_VALUES_EQUAL(Lo32(y).Get(), 0xe94c03ab);
+        UNIT_ASSERT_VALUES_EQUAL(Hi32(y).Get(), 0x33c06196);
+    }
+
+    Y_UNIT_TEST(HiLo16) {
+        ui32 x = 0;
+        Lo16(x) = 18;
+        UNIT_ASSERT_VALUES_EQUAL(x, 18);
+
+        Hi16(x) = 33;
+        UNIT_ASSERT_VALUES_EQUAL(x, 2162706);
+
+        const ui32 y = 0xe94c03ab;
+        UNIT_ASSERT_VALUES_EQUAL(Lo16(y).Get(), 0x03ab);
+        UNIT_ASSERT_VALUES_EQUAL(Hi16(y).Get(), 0xe94c);
+    }
+
+    Y_UNIT_TEST(HiLo8) {
+        ui16 x = 0;
+        Lo8(x) = 18;
+        UNIT_ASSERT_VALUES_EQUAL(x, 18);
+
+        Hi8(x) = 33;
+        UNIT_ASSERT_VALUES_EQUAL(x, 8466);
+
+        const ui16 y = 0x03ab;
+        UNIT_ASSERT_VALUES_EQUAL(Lo8(y).Get(), 0xab);
+        UNIT_ASSERT_VALUES_EQUAL(Hi8(y).Get(), 0x03);
+    }
+
+    Y_UNIT_TEST(Combined) {
+        ui32 x = 0;
+        Lo8(Lo16(x)) = 18;
+        UNIT_ASSERT_VALUES_EQUAL(x, 18);
+
+        Hi8(Lo16(x)) = 33;
+        UNIT_ASSERT_VALUES_EQUAL(x, 8466);
+
+        const ui32 y = 0xe94c03ab;
+        UNIT_ASSERT_VALUES_EQUAL(Lo8(Lo16(y)).Get(), 0xab);
+        UNIT_ASSERT_VALUES_EQUAL(Hi8(Lo16(y)).Get(), 0x03);
+    }
+
+    Y_UNIT_TEST(NarrowFromWide) {
+        const ui64 x = 0x1122334455667788ull;
+        UNIT_ASSERT_VALUES_EQUAL(Lo8(x).Get(), 0x88);
+        UNIT_ASSERT_VALUES_EQUAL(Hi8(x).Get(), 0x11);
+        UNIT_ASSERT_VALUES_EQUAL(Lo16(x).Get(), 0x7788);
+        UNIT_ASSERT_VALUES_EQUAL(Hi16(x).Get(), 0x1122);
+        UNIT_ASSERT_VALUES_EQUAL(Lo32(x).Get(), 0x55667788);
+        UNIT_ASSERT_VALUES_EQUAL(Hi32(x).Get(), 0x11223344);
+    }
+}