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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 "base/strings/string_util.h"
#include "courgette/assembly_program.h"
#include "courgette/courgette.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 a simple programs. They differ only in the
// label assignment, so that it is possible to make them look identical.
courgette::AssemblyProgram* MakeProgram(int kind) const {
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;
}
courgette::AssemblyProgram* MakeProgramA() const { return MakeProgram(0); }
courgette::AssemblyProgram* MakeProgramB() const { return MakeProgram(1); }
// Returns a string that is the serialized version of |program|.
// Deletes |program|.
std::string Serialize(courgette::AssemblyProgram *program) const {
courgette::EncodedProgram* encoded = NULL;
const courgette::Status encode_status = Encode(program, &encoded);
EXPECT_EQ(courgette::C_OK, encode_status);
DeleteAssemblyProgram(program);
courgette::SinkStreamSet sinks;
const courgette::Status write_status = WriteEncodedProgram(encoded, &sinks);
EXPECT_EQ(courgette::C_OK, write_status);
DeleteEncodedProgram(encoded);
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 {
courgette::AssemblyProgram* prog1 = MakeProgramA();
courgette::AssemblyProgram* prog2 = MakeProgramB();
std::string s1 = Serialize(prog1);
std::string s2 = Serialize(prog2);
// Don't use EXPECT_EQ because strings are unprintable.
EXPECT_FALSE(s1 == s2); // Unadjusted A and B differ.
courgette::AssemblyProgram* prog5 = MakeProgramA();
courgette::AssemblyProgram* prog6 = MakeProgramB();
courgette::Status can_adjust = Adjust(*prog5, prog6);
EXPECT_EQ(courgette::C_OK, can_adjust);
std::string s5 = Serialize(prog5);
std::string s6 = Serialize(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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