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c12e300bb8
Summary: Move top-level Python packages `mercurial`, `hgext` and `hgdemandimport` to a new top-level package `edenscm`. This allows the Python packages provided by the upstream Mercurial to be installed side-by-side. To maintain compatibility, `edenscm/` gets added to `sys.path` in `mercurial/__init__.py`. Reviewed By: phillco, ikostia Differential Revision: D13853115 fbshipit-source-id: b296b0673dc54c61ef6a591ebc687057ff53b22e
64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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#include <folly/portability/GTest.h>
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#include <array>
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#include "edenscm/mercurial/bitmanipulation.h"
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namespace {
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// This is basically like std::make_array<char>(), but uses memcpy to avoid
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// undefined behavior when handling input bytes that fit in unsigned char
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// but not char.
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//
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// We need to return array<char> rather than array<unsigned char> since the
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// functions we are testing expect a 'const char*'
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template <typename... Args>
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constexpr std::array<char, sizeof...(Args)> make_buf(Args&&... args) {
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std::array<unsigned char, sizeof...(Args)> unsigned_array = {
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{static_cast<unsigned char>(std::forward<Args>(args))...}};
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std::array<char, sizeof...(Args)> result{{}};
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memcpy(result.data(), unsigned_array.data(), unsigned_array.size());
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return result;
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}
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} // namespace
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TEST(BitManipulation, getbe32) {
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EXPECT_EQ(0x12345678, getbe32(make_buf(0x12, 0x34, 0x56, 0x78).data()));
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EXPECT_EQ(0x12345678, getbe32(make_buf(0x12, 0x34, 0x56, 0x78).data()));
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EXPECT_EQ(0xffffffffUL, getbe32(make_buf(0xff, 0xff, 0xff, 0xff).data()));
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}
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TEST(BitManipulation, putbe32) {
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std::array<char, 4> buf;
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putbe32(0x87654321UL, buf.data());
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EXPECT_EQ(0x87654321UL, getbe32(buf.data()));
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putbe32(0, buf.data());
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EXPECT_EQ(0, getbe32(buf.data()));
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putbe32(42, buf.data());
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EXPECT_EQ(42, getbe32(buf.data()));
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}
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TEST(BitManipulation, getbeuint16) {
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EXPECT_EQ(0x1234, getbeuint16(make_buf(0x12, 0x34).data()));
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EXPECT_EQ(0xffff, getbeuint16(make_buf(0xff, 0xff).data()));
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}
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TEST(BitManipulation, getbeint16) {
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EXPECT_EQ(0x1234, getbeint16(make_buf(0x12, 0x34).data()));
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EXPECT_EQ(-1, getbeint16(make_buf(0xff, 0xff).data()));
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EXPECT_EQ(-2, getbeint16(make_buf(0xff, 0xfe).data()));
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}
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TEST(BitManipulation, getbefloat64) {
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EXPECT_EQ(0.0, getbefloat64(make_buf(0, 0, 0, 0, 0, 0, 0, 0).data()));
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EXPECT_EQ(-0.0, getbefloat64(make_buf(0x80, 0, 0, 0, 0, 0, 0, 0).data()));
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EXPECT_DOUBLE_EQ(
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2.0, getbefloat64(make_buf(0x40, 0, 0, 0, 0, 0, 0, 1).data()));
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EXPECT_DOUBLE_EQ(
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-8.0, getbefloat64(make_buf(0xc0, 0x20, 0, 0, 0, 0, 0, 1).data()));
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EXPECT_DOUBLE_EQ(
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-4.0,
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getbefloat64(
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make_buf(0xc0, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff).data()));
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}
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