206 lines
8.6 KiB
C++
206 lines
8.6 KiB
C++
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// Copyright 2018, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Google Mock - a framework for writing C++ mock classes.
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//
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// This file tests the internal preprocessor macro library.
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#include <string>
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#include "gmock/gmock.h"
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#include "gmock/internal/gmock-pp.h"
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namespace testing {
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namespace {
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// Matcher to verify that to strings are identical up to whitespace
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// Not 100% correct, because it treats "AB" as equal to "A B".
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::testing::Matcher<const std::string&> SameExceptSpaces(const std::string& s) {
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auto remove_spaces = [](std::string to_split) {
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to_split.erase(std::remove(to_split.begin(), to_split.end(), ' '),
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to_split.end());
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return to_split;
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};
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return ::testing::ResultOf(remove_spaces, remove_spaces(s));
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}
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// Verify that a macro expands to a given text. Ignores whitespace difference.
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// In MSVC, GMOCK_PP_STRINGIZE() returns nothing, rather than "". So concatenate
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// with an empty string.
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#define EXPECT_EXPANSION(Result, Macro) \
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EXPECT_THAT("" GMOCK_PP_STRINGIZE(Macro), SameExceptSpaces(Result))
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TEST(Macros, Cat) {
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EXPECT_EXPANSION("14", GMOCK_PP_CAT(1, 4));
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EXPECT_EXPANSION("+=", GMOCK_PP_CAT(+, =));
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}
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TEST(Macros, Narg) {
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EXPECT_EXPANSION("1", GMOCK_PP_NARG());
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EXPECT_EXPANSION("1", GMOCK_PP_NARG(x));
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EXPECT_EXPANSION("2", GMOCK_PP_NARG(x, y));
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EXPECT_EXPANSION("3", GMOCK_PP_NARG(x, y, z));
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EXPECT_EXPANSION("4", GMOCK_PP_NARG(x, y, z, w));
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EXPECT_EXPANSION("0", GMOCK_PP_NARG0());
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EXPECT_EXPANSION("1", GMOCK_PP_NARG0(x));
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EXPECT_EXPANSION("2", GMOCK_PP_NARG0(x, y));
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}
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TEST(Macros, Comma) {
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EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA());
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EXPECT_EXPANSION("1", GMOCK_PP_HAS_COMMA(, ));
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EXPECT_EXPANSION("0", GMOCK_PP_HAS_COMMA((, )));
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}
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TEST(Macros, IsEmpty) {
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EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY());
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EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(, ));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(a));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_EMPTY(()));
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#define GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1
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EXPECT_EXPANSION("1", GMOCK_PP_IS_EMPTY(GMOCK_PP_INTERNAL_IS_EMPTY_TEST_1));
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}
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TEST(Macros, If) {
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EXPECT_EXPANSION("1", GMOCK_PP_IF(1, 1, 2));
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EXPECT_EXPANSION("2", GMOCK_PP_IF(0, 1, 2));
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}
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TEST(Macros, HeadTail) {
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EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1));
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EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2));
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EXPECT_EXPANSION("1", GMOCK_PP_HEAD(1, 2, 3));
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EXPECT_EXPANSION("", GMOCK_PP_TAIL(1));
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EXPECT_EXPANSION("2", GMOCK_PP_TAIL(1, 2));
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EXPECT_EXPANSION("2", GMOCK_PP_HEAD(GMOCK_PP_TAIL(1, 2, 3)));
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}
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TEST(Macros, Parentheses) {
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EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss()));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_BEGIN_PARENS(sss() sss));
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EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)));
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EXPECT_EXPANSION("1", GMOCK_PP_IS_BEGIN_PARENS((sss)ss));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss()));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS(sss() sss));
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EXPECT_EXPANSION("1", GMOCK_PP_IS_ENCLOSED_PARENS((sss)));
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EXPECT_EXPANSION("0", GMOCK_PP_IS_ENCLOSED_PARENS((sss)ss));
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EXPECT_EXPANSION("1 + 1", GMOCK_PP_REMOVE_PARENS((1 + 1)));
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}
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TEST(Macros, Increment) {
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EXPECT_EXPANSION("1", GMOCK_PP_INC(0));
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EXPECT_EXPANSION("2", GMOCK_PP_INC(1));
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EXPECT_EXPANSION("3", GMOCK_PP_INC(2));
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EXPECT_EXPANSION("4", GMOCK_PP_INC(3));
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EXPECT_EXPANSION("5", GMOCK_PP_INC(4));
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EXPECT_EXPANSION("16", GMOCK_PP_INC(15));
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}
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#define JOINER_CAT(a, b) a##b
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#define JOINER(_N, _Data, _Elem) JOINER_CAT(_Data, _N) = _Elem
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TEST(Macros, Repeat) {
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EXPECT_EXPANSION("", GMOCK_PP_REPEAT(JOINER, X, 0));
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EXPECT_EXPANSION("X0=", GMOCK_PP_REPEAT(JOINER, X, 1));
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EXPECT_EXPANSION("X0= X1=", GMOCK_PP_REPEAT(JOINER, X, 2));
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EXPECT_EXPANSION("X0= X1= X2=", GMOCK_PP_REPEAT(JOINER, X, 3));
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EXPECT_EXPANSION("X0= X1= X2= X3=", GMOCK_PP_REPEAT(JOINER, X, 4));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4=", GMOCK_PP_REPEAT(JOINER, X, 5));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5=", GMOCK_PP_REPEAT(JOINER, X, 6));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6=",
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GMOCK_PP_REPEAT(JOINER, X, 7));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7=",
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GMOCK_PP_REPEAT(JOINER, X, 8));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8=",
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GMOCK_PP_REPEAT(JOINER, X, 9));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9=",
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GMOCK_PP_REPEAT(JOINER, X, 10));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10=",
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GMOCK_PP_REPEAT(JOINER, X, 11));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11=",
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GMOCK_PP_REPEAT(JOINER, X, 12));
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EXPECT_EXPANSION("X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12=",
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GMOCK_PP_REPEAT(JOINER, X, 13));
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EXPECT_EXPANSION(
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"X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13=",
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GMOCK_PP_REPEAT(JOINER, X, 14));
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EXPECT_EXPANSION(
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"X0= X1= X2= X3= X4= X5= X6= X7= X8= X9= X10= X11= X12= X13= X14=",
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GMOCK_PP_REPEAT(JOINER, X, 15));
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}
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TEST(Macros, ForEach) {
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EXPECT_EXPANSION("", GMOCK_PP_FOR_EACH(JOINER, X, ()));
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EXPECT_EXPANSION("X0=a", GMOCK_PP_FOR_EACH(JOINER, X, (a)));
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EXPECT_EXPANSION("X0=a X1=b", GMOCK_PP_FOR_EACH(JOINER, X, (a, b)));
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EXPECT_EXPANSION("X0=a X1=b X2=c", GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h)));
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EXPECT_EXPANSION("X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
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"X13=n",
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GMOCK_PP_FOR_EACH(JOINER, X, (a, b, c, d, e, f, g, h, i, j, k, l, m, n)));
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EXPECT_EXPANSION(
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"X0=a X1=b X2=c X3=d X4=e X5=f X6=g X7=h X8=i X9=j X10=k X11=l X12=m "
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"X13=n X14=o",
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GMOCK_PP_FOR_EACH(JOINER, X,
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(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o)));
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}
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} // namespace
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} // namespace testing
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