text: // Copyright 2013 the V8 project authors. All rights reserved.
  // 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 Google Inc. 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.
  
  #include <limits.h>
  
  #include "src/v8.h"
  
  #include "src/api.h"
  #include "src/base/platform/platform.h"
  #include "src/compilation-cache.h"
  #include "src/execution.h"
  #include "src/isolate.h"
  #include "src/objects-inl.h"
  #include "src/unicode-inl.h"
  #include "src/utils.h"
  #include "test/cctest/cctest.h"
  
  using ::v8::Context;
  using ::v8::Extension;
  using ::v8::Function;
  using ::v8::FunctionTemplate;
  using ::v8::HandleScope;
  using ::v8::Local;
  using ::v8::Message;
  using ::v8::MessageCallback;
  using ::v8::Object;
  using ::v8::ObjectTemplate;
  using ::v8::Persistent;
  using ::v8::Script;
  using ::v8::StackTrace;
  using ::v8::String;
  using ::v8::TryCatch;
  using ::v8::Undefined;
  using ::v8::V8;
  using ::v8::Value;
  
  static void ExpectBoolean(Local<Context> context, bool expected,
                            Local<Value> result) {
    CHECK(result->IsBoolean());
    CHECK_EQ(expected, result->BooleanValue(context).FromJust());
  }
  
  
  static void ExpectInt32(Local<Context> context, int32_t expected,
                          Local<Value> result) {
    CHECK(result->IsInt32());
    CHECK_EQ(expected, result->Int32Value(context).FromJust());
  }
  
  
  static void ExpectNumber(Local<Context> context, double expected,
                           Local<Value> result) {
    CHECK(result->IsNumber());
    CHECK_EQ(expected, result->NumberValue(context).FromJust());
  }
  
  
  static void ExpectUndefined(Local<Value> result) {
    CHECK(result->IsUndefined());
  }
  
  
  // Tests are sorted by order of implementation.
  
  TEST(simple_value) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result = CompileRun("0x271828;");
    ExpectInt32(env.local(), 0x271828, result);
  }
  
  
  TEST(global_variable) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result = CompileRun("var my_global_var = 0x123; my_global_var;");
    ExpectInt32(env.local(), 0x123, result);
  }
  
  
  TEST(simple_function_call) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result = CompileRun(
        "function foo() { return 0x314; }"
        "foo();");
    ExpectInt32(env.local(), 0x314, result);
  }
  
  
  TEST(binary_op) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result = CompileRun(
        "function foo() {"
        "  var a = 0x1200;"
        "  var b = 0x0035;"
        "  return 2 * (a + b - 1);"
        "}"
        "foo();");
    ExpectInt32(env.local(), 0x2468, result);
  }
  
  static void if_comparison_testcontext_helper(Local<Context> context,
                                               char const* op, char const* lhs,
                                               char const* rhs, int expect) {
    char buffer[256];
    snprintf(buffer, sizeof(buffer),
             "var lhs = %s;"
             "var rhs = %s;"
             "if ( lhs %s rhs ) { 1; }"
             "else { 0; }",
             lhs, rhs, op);
    Local<Value> result = CompileRun(buffer);
    ExpectInt32(context, expect, result);
  }
  
  static void if_comparison_effectcontext_helper(Local<Context> context,
                                                 char const* op, char const* lhs,
                                                 char const* rhs, int expect) {
    char buffer[256];
    snprintf(buffer, sizeof(buffer),
             "var lhs = %s;"
             "var rhs = %s;"
             "var test = lhs %s rhs;"
             "if ( test ) { 1; }"
             "else { 0; }",
             lhs, rhs, op);
    Local<Value> result = CompileRun(buffer);
    ExpectInt32(context, expect, result);
  }
  
  static void if_comparison_helper(Local<Context> context, char const* op,
                                   int expect_when_lt, int expect_when_eq,
                                   int expect_when_gt) {
    // TODO(all): Non-SMI tests.
  
    if_comparison_testcontext_helper(context, op, "1", "3", expect_when_lt);
    if_comparison_testcontext_helper(context, op, "5", "5", expect_when_eq);
    if_comparison_testcontext_helper(context, op, "9", "7", expect_when_gt);
  
    if_comparison_effectcontext_helper(context, op, "1", "3", expect_when_lt);
    if_comparison_effectcontext_helper(context, op, "5", "5", expect_when_eq);
    if_comparison_effectcontext_helper(context, op, "9", "7", expect_when_gt);
  }
  
  
  TEST(if_comparison) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
  
    if_comparison_helper(env.local(), "<", 1, 0, 0);
    if_comparison_helper(env.local(), "<=", 1, 1, 0);
    if_comparison_helper(env.local(), "==", 0, 1, 0);
    if_comparison_helper(env.local(), "===", 0, 1, 0);
    if_comparison_helper(env.local(), ">=", 0, 1, 1);
    if_comparison_helper(env.local(), ">", 0, 0, 1);
    if_comparison_helper(env.local(), "!=", 1, 0, 1);
    if_comparison_helper(env.local(), "!==", 1, 0, 1);
  }
  
  
  TEST(unary_plus) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result;
    // SMI
    result = CompileRun("var a = 1234; +a");
    ExpectInt32(env.local(), 1234, result);
    // Number
    result = CompileRun("var a = 1234.5; +a");
    ExpectNumber(env.local(), 1234.5, result);
    // String (SMI)
    result = CompileRun("var a = '1234'; +a");
    ExpectInt32(env.local(), 1234, result);
    // String (Number)
    result = CompileRun("var a = '1234.5'; +a");
    ExpectNumber(env.local(), 1234.5, result);
    // Check side effects.
    result = CompileRun("var a = 1234; +(a = 4321); a");
    ExpectInt32(env.local(), 4321, result);
  }
  
  
  TEST(unary_minus) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result;
    result = CompileRun("var a = 1234; -a");
    ExpectInt32(env.local(), -1234, result);
    result = CompileRun("var a = 1234.5; -a");
    ExpectNumber(env.local(), -1234.5, result);
    result = CompileRun("var a = 1234; -(a = 4321); a");
    ExpectInt32(env.local(), 4321, result);
    result = CompileRun("var a = '1234'; -a");
    ExpectInt32(env.local(), -1234, result);
    result = CompileRun("var a = '1234.5'; -a");
    ExpectNumber(env.local(), -1234.5, result);
  }
  
  
  TEST(unary_void) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result;
    result = CompileRun("var a = 1234; void (a);");
    ExpectUndefined(result);
    result = CompileRun("var a = 0; void (a = 42); a");
    ExpectInt32(env.local(), 42, result);
    result = CompileRun("var a = 0; void (a = 42);");
    ExpectUndefined(result);
  }
  
  
  TEST(unary_not) {
    LocalContext env;
    v8::HandleScope scope(env->GetIsolate());
    Local<Value> result;
    result = CompileRun("var a = 1234; !a");
    ExpectBoolean(env.local(), false, result);
    result = CompileRun("var a = 0; !a");
    ExpectBoolean(env.local(), true, result);
    result = CompileRun("var a = 0; !(a = 1234); a");
    ExpectInt32(env.local(), 1234, result);
    result = CompileRun("var a = '1234'; !a");
    ExpectBoolean(env.local(), false, result);
    result = CompileRun("var a = ''; !a");
    ExpectBoolean(env.local(), true, result);
    result = CompileRun("var a = 1234; !!a");
    ExpectBoolean(env.local(), true, result);
    result = CompileRun("var a = 0; !!a");
    ExpectBoolean(env.local(), false, result);
    result = CompileRun("var a = 0; if ( !a ) { 1; } else { 0; }");
    ExpectInt32(env.local(), 1, result);
    result = CompileRun("var a = 1; if ( !a ) { 1; } else { 0; }");
    ExpectInt32(env.local(), 0, result);
  }
  