js/src/jsapi-tests/testGCCellPtr.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "jsapi.h"
   9 #include "jspubtd.h"
  10
  11 #include "js/CompilationAndEvaluation.h"  // JS::Compile
  12 #include "js/SourceText.h"                // JS::Source{Ownership,Text}
  13 #include "jsapi-tests/tests.h"
  14
  15 JS::GCCellPtr GivesAndTakesCells(JS::GCCellPtr cell) { return cell; }
  16
  17 BEGIN_TEST(testGCCellPtr) {
  18   JS::RootedObject obj(cx, JS_NewPlainObject(cx));
  19   CHECK(obj);
  20
  21   JS::RootedString str(cx, JS_NewStringCopyZ(cx, "probably foobar"));
  22   CHECK(str);
  23
  24   const char* code = "function foo() { return 'bar'; }";
  25
  26   JS::CompileOptions opts(cx);
  27
  28   JS::SourceText<mozilla::Utf8Unit> srcBuf;
  29   CHECK(srcBuf.init(cx, code, strlen(code), JS::SourceOwnership::Borrowed));
  30
  31   JS::RootedScript script(cx, JS::Compile(cx, opts, srcBuf));
  32   CHECK(script);
  33
  34   CHECK(!JS::GCCellPtr(nullptr));
  35
  36   CHECK(JS::GCCellPtr(obj.get()));
  37   CHECK(JS::GCCellPtr(obj.get()).kind() == JS::TraceKind::Object);
  38   CHECK(JS::ObjectValue(*obj).toGCCellPtr().kind() == JS::TraceKind::Object);
  39
  40   CHECK(JS::GCCellPtr(str.get()));
  41   CHECK(JS::GCCellPtr(str.get()).kind() == JS::TraceKind::String);
  42   CHECK(JS::StringValue(str).toGCCellPtr().kind() == JS::TraceKind::String);
  43
  44   CHECK(JS::GCCellPtr(script.get()));
  45   CHECK(!JS::GCCellPtr(nullptr));
  46   CHECK(JS::GCCellPtr(script.get()).kind() == JS::TraceKind::Script);
  47
  48   JS::GCCellPtr objcell(obj.get());
  49   JS::GCCellPtr scriptcell = JS::GCCellPtr(script.get());
  50   CHECK(GivesAndTakesCells(objcell));
  51   CHECK(GivesAndTakesCells(scriptcell));
  52
  53   JS::GCCellPtr copy = objcell;
  54   CHECK(copy == objcell);
  55
  56   return true;
  57 }
  58 END_TEST(testGCCellPtr)