Move Courgette...

courgette/adjustment_method_unittest.cc

+// Copyright (c) 2009 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/path_service.h"
+#include "base/file_util.h"
+#include "base/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();
+    prog->set_image_base(0x00400000);
+
+    courgette::Label* labelA = prog->FindOrMakeAbs32Label(0x00410000);
+    courgette::Label* labelB = prog->FindOrMakeAbs32Label(0x00410004);
+
+    prog->EmitAbs32(labelA);
+    prog->EmitAbs32(labelA);
+    prog->EmitAbs32(labelB);
+    prog->EmitAbs32(labelA);
+    prog->EmitAbs32(labelA);
+    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();
+}