js/src/jsapi-tests/testIsCompilableUnit.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "mozilla/Utf8.h"  // mozilla::Utf8Unit
   6
   7 #include <string_view>
   8
   9 #include "js/CompilationAndEvaluation.h"  // JS_Utf8BufferIsCompilableUnit
  10 #include "js/ErrorReport.h"               // JSErrorReport
  11 #include "js/GlobalObject.h"              // JS::CurrentGlobalOrNull
  12 #include "js/RootingAPI.h"                // JS::Rooted
  13 #include "js/SourceText.h"                // JS::SourceText, JS::SourceOwnership
  14 #include "js/Warnings.h"                  // JS::SetWarningReporter
  15 #include "jsapi-tests/tests.h"
  16
  17 static bool gIsCompilableUnitWarned = false;
  18
  19 BEGIN_TEST(testIsCompilableUnit) {
  20   JS::SetWarningReporter(cx, WarningReporter);
  21
  22   // Compilable case.
  23   {
  24     static constexpr std::string_view src = "1";
  25     CHECK(JS_Utf8BufferIsCompilableUnit(cx, global, src.data(), src.length()));
  26     CHECK(!JS_IsExceptionPending(cx));
  27     CHECK(!gIsCompilableUnitWarned);
  28   }
  29
  30   // Not compilable cases.
  31   {
  32     static constexpr std::string_view src = "1 + ";
  33     CHECK(!JS_Utf8BufferIsCompilableUnit(cx, global, src.data(), src.length()));
  34     CHECK(!JS_IsExceptionPending(cx));
  35     CHECK(!gIsCompilableUnitWarned);
  36   }
  37
  38   {
  39     static constexpr std::string_view src = "() =>";
  40     CHECK(!JS_Utf8BufferIsCompilableUnit(cx, global, src.data(), src.length()));
  41     CHECK(!JS_IsExceptionPending(cx));
  42     CHECK(!gIsCompilableUnitWarned);
  43   }
  44
  45   // Compilable but warned case.
  46   {
  47     static constexpr std::string_view src = "() => { return; unreachable(); }";
  48     CHECK(JS_Utf8BufferIsCompilableUnit(cx, global, src.data(), src.length()));
  49     CHECK(!JS_IsExceptionPending(cx));
  50     CHECK(!gIsCompilableUnitWarned);
  51   }
  52
  53   // Invalid UTF-8 case.
  54   // This should report error with returning *true*.
  55   {
  56     static constexpr std::string_view src = "\x80";
  57     CHECK(JS_Utf8BufferIsCompilableUnit(cx, global, src.data(), src.length()));
  58     CHECK(JS_IsExceptionPending(cx));
  59     CHECK(!gIsCompilableUnitWarned);
  60     JS_ClearPendingException(cx);
  61   }
  62
  63   return true;
  64 }
  65
  66 static void WarningReporter(JSContext* cx, JSErrorReport* report) {
  67   gIsCompilableUnitWarned = true;
  68 }
  69 END_TEST(testIsCompilableUnit);