From 64917da5d01bb5a3ea38220804c4411960025e02 Mon Sep 17 00:00:00 2001 From: "Bobby R. Bruce" Date: Wed, 9 Oct 2019 16:07:16 -0700 Subject: [PATCH] tests: Added GTests for base/types.cc Change-Id: I9515735efdd452a9f8c98f37f4ec2c27120929f5 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21659 Reviewed-by: Bobby R. Bruce Reviewed-by: Jason Lowe-Power Reviewed-by: Daniel Carvalho Maintainer: Bobby R. Bruce Maintainer: Jason Lowe-Power Tested-by: kokoro --- src/base/SConscript | 1 + src/base/types.test.cc | 186 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 187 insertions(+) create mode 100644 src/base/types.test.cc diff --git a/src/base/SConscript b/src/base/SConscript index b11775daf..661a21911 100644 --- a/src/base/SConscript +++ b/src/base/SConscript @@ -77,6 +77,7 @@ Source('time.cc') Source('trace.cc') GTest('trie.test', 'trie.test.cc') Source('types.cc') +GTest('types.test', 'types.test.cc', 'types.cc') Source('loader/aout_object.cc') Source('loader/dtb_file.cc') diff --git a/src/base/types.test.cc b/src/base/types.test.cc new file mode 100644 index 000000000..9adb3782f --- /dev/null +++ b/src/base/types.test.cc @@ -0,0 +1,186 @@ +/* + * Copyright (c) 2019 The Regents of the University of California + * All rights reserved + * + * The license below extends only to copyright in the software and shall + * not be construed as granting a license to any other intellectual + * property including but not limited to intellectual property relating + * to a hardware implementation of the functionality of the software + * licensed hereunder. You may use the software subject to the license + * terms below provided that you ensure that this notice is replicated + * unmodified and in its entirety in all distributions of the software, + * modified or unmodified, in source code or in binary form. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Bobby R. Bruce + */ + +#include + +#include + +#include "base/types.hh" + +/* + * The following test the Cycles class. Cycles is a wrapper for uint64_t. + * It overloads most commonly used operators. + */ +TEST(CyclesTest, NoCycles) +{ + Cycles cycles; + EXPECT_EQ(0, cycles); +} + +TEST(CyclesTest, PrefixIncrement) +{ + Cycles cycles(0); + EXPECT_EQ(1, ++cycles); + EXPECT_EQ(2, ++cycles); + EXPECT_EQ(2, cycles); +} + + +TEST(CyclesTest, PrefixDecrement) +{ + Cycles cycles(10); + EXPECT_EQ(9, --cycles); + EXPECT_EQ(8, --cycles); + EXPECT_EQ(8, cycles); +} + +TEST(CyclesTest, InPlaceAddition) +{ + Cycles cycles(12); + Cycles to_add(5); + cycles += to_add; + EXPECT_EQ(17, cycles); +} + +TEST(CyclesTest, GreaterThanLessThan) +{ + Cycles one_cycle(1); + Cycles two_cycles(2); + EXPECT_TRUE(two_cycles > one_cycle); + EXPECT_TRUE(one_cycle < two_cycles); +} + +TEST(CyclesTest, AddCycles) +{ + Cycles cycles_1(10); + Cycles cycles_2(15); + Cycles added = cycles_1 + cycles_2; + EXPECT_EQ(25, added); +} + +TEST(CyclesTest, SubtractCycles) +{ + Cycles cycles_1(25); + Cycles cycles_2(1); + Cycles subtracted = cycles_1 - cycles_2; + EXPECT_EQ(24, subtracted); +} + +TEST(CyclesTest, ShiftRight) +{ + Cycles cycles(1ULL << 40); + Cycles cycles_shifted = cycles >> 5; + EXPECT_EQ((1ULL << 35), cycles_shifted); +} + +TEST(CyclesTest, ShiftLeft) +{ + Cycles cycles(1ULL << 40); + Cycles cycles_shifted = cycles << 20; + EXPECT_EQ((1ULL << 60), cycles_shifted); +} + +TEST(CyclesTest, OutStream) +{ + Cycles cycles(56); + std::ostringstream ss; + ss << "The number of cycles is: " << cycles << std::endl; + EXPECT_EQ("The number of cycles is: 56\n", ss.str()); +} + +/* + * MicroPCRomBit is a constant. This simple test verifies it has not changed. + * The following MicroPC tests rely heavily on this constant. + */ +TEST(MicroPCTest, CheckMicroPCRomBit) +{ + EXPECT_EQ((1 << 15), MicroPCRomBit); +} + +TEST(MicroPCTest, RomMicroPCTest) +{ + EXPECT_EQ(MicroPCRomBit + (1 << 8), romMicroPC(MicroPCRomBit + (1 << 8))); +} + +TEST(MicroPCTest, NormalMicroPCTest) +{ + EXPECT_EQ((1 << 8), normalMicroPC((1 << 8) + MicroPCRomBit)); +} + +TEST(MicroPCTest, IsRomMicroPCTest) +{ + EXPECT_TRUE(isRomMicroPC(MicroPCRomBit + (1 << 8))); +} + +TEST(MicroPCTest, IsNotRomMicroPCTest) +{ + EXPECT_FALSE(isRomMicroPC((1 << 8))); +} + +/* + * Both the "floatToBits32" and "floatToBits64" functions use the standard + * union approach to carry out type punning. These checks are simple regression + * tests. + */ +TEST(TypesTest, FloatToBits32) +{ + EXPECT_EQ(0x3e828f5c, floatToBits32(0.255)); +} + +TEST(TypesTest, floatToBits64) +{ + EXPECT_EQ(0x3fd067dfe32a0664, floatToBits64(0.25634)); +} + +/* + * "floatToBits(double val)" and "floatToBits(float val)" are simple overloads + * for "floatToBits64" and "floatToBits32" respectively. Ergo, these tests + * check this is the case. + */ +TEST(TypesTest, floatsToBitsDoubleInput) +{ + double val = 0.84023; + EXPECT_EQ(floatToBits64(val), floatToBits(val)); +} + +TEST(TypesTest, floatsToBitsFloatInput) +{ + float val = 0.04567; + EXPECT_EQ(floatToBits32(val), floatToBits(val)); +} \ No newline at end of file -- 2.30.2