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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include <utility>
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "courgette/assembly_program.h"
#include "courgette/courgette.h"
#include "courgette/encoded_program.h"
#include "courgette/streams.h"
#include "testing/gtest/include/gtest/gtest.h"
class AdjustmentMethodTest : public testing::Test {
public:
void Test1() const;
private:
void SetUp() {
}
void TearDown() {
}
// Returns one of two similar simple programs. These differ only in Label
// assignment, so it is possible to make them look identical.
scoped_ptr<courgette::AssemblyProgram> MakeProgram(int kind) const {
scoped_ptr<courgette::AssemblyProgram> prog(
new courgette::AssemblyProgram(courgette::EXE_WIN_32_X86));
prog->set_image_base(0x00400000);
courgette::Label* labelA = prog->FindOrMakeAbs32Label(0x00410000);
courgette::Label* labelB = prog->FindOrMakeAbs32Label(0x00410004);
EXPECT_TRUE(prog->EmitAbs32(labelA));
EXPECT_TRUE(prog->EmitAbs32(labelA));
EXPECT_TRUE(prog->EmitAbs32(labelB));
EXPECT_TRUE(prog->EmitAbs32(labelA));
EXPECT_TRUE(prog->EmitAbs32(labelA));
EXPECT_TRUE(prog->EmitAbs32(labelB));
if (kind == 0) {
labelA->index_ = 0;
labelB->index_ = 1;
} else {
labelA->index_ = 1;
labelB->index_ = 0;
}
prog->AssignRemainingIndexes();
return prog;
}
scoped_ptr<courgette::AssemblyProgram> MakeProgramA() const {
return MakeProgram(0);
}
scoped_ptr<courgette::AssemblyProgram> MakeProgramB() const {
return MakeProgram(1);
}
// Returns a string that is the serialized version of |program|.
// Deletes |program|.
std::string Serialize(scoped_ptr<courgette::AssemblyProgram> program) const {
scoped_ptr<courgette::EncodedProgram> encoded;
const courgette::Status encode_status = Encode(*program, &encoded);
EXPECT_EQ(courgette::C_OK, encode_status);
program.reset();
courgette::SinkStreamSet sinks;
const courgette::Status write_status =
WriteEncodedProgram(encoded.get(), &sinks);
EXPECT_EQ(courgette::C_OK, write_status);
encoded.reset();
courgette::SinkStream sink;
bool can_collect = sinks.CopyTo(&sink);
EXPECT_TRUE(can_collect);
return std::string(reinterpret_cast<const char *>(sink.Buffer()),
sink.Length());
}
};
void AdjustmentMethodTest::Test1() const {
scoped_ptr<courgette::AssemblyProgram> prog1 = MakeProgramA();
scoped_ptr<courgette::AssemblyProgram> prog2 = MakeProgramB();
std::string s1 = Serialize(std::move(prog1));
std::string s2 = Serialize(std::move(prog2));
// Don't use EXPECT_EQ because strings are unprintable.
EXPECT_FALSE(s1 == s2); // Unadjusted A and B differ.
scoped_ptr<courgette::AssemblyProgram> prog5 = MakeProgramA();
scoped_ptr<courgette::AssemblyProgram> prog6 = MakeProgramB();
courgette::Status can_adjust = Adjust(*prog5, prog6.get());
EXPECT_EQ(courgette::C_OK, can_adjust);
std::string s5 = Serialize(std::move(prog5));
std::string s6 = Serialize(std::move(prog6));
EXPECT_TRUE(s1 == s5); // Adjustment did not change A (prog5)
EXPECT_TRUE(s5 == s6); // Adjustment did change B into A
}
TEST_F(AdjustmentMethodTest, All) {
Test1();
}
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