/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jsapi_tests_tests_h
#define jsapi_tests_tests_h
#include <string>
#include <type_traits>
#include "jsapi.h"
#include "gc/GC.h"
#include "js/AllocPolicy.h"
#include "js/ArrayBuffer.h" // BufferContentsDeleter
#include "js/Principals.h" // JSPrincipals
#include "js/RegExpFlags.h" // JS::RegExpFlags
#include "js/RootingAPI.h" // JS::PersistentRootedObject
#include "js/Value.h"
#include "js/Vector.h"
#include "vm/JSContext.h"
namespace jsapitest {
enum class TestKind { Runtime, Frontend };
class TestBase {
public:
TestBase* next = nullptr;
const TestKind kind;
bool knownFail =
false;
std::string msgs;
TestBase(TestKind kind);
virtual ~TestBase() {}
bool isRuntimeTest()
const {
return kind == TestKind::Runtime; }
virtual const char* name() =
0;
virtual bool run() =
0;
// These methods may be overridden by the test to perform additional
// initialization after any JSContext and global have been created.
virtual bool init() {
return true; }
virtual void uninit() {}
virtual void maybeAppendException(std::string& message) {}
bool fail(
const std::string& msg = std::string(),
const char* filename =
"-",
int lineno =
0);
std::string messages()
const {
return msgs; }
};
class RuntimeTest :
public TestBase {
public:
JSContext* cx = nullptr;
JS::PersistentRootedObject global;
// Whether this test is willing to skip its init() and reuse a global (and
// JSContext etc.) from a previous test that also has reuseGlobal=true. It
// also means this test is willing to skip its uninit() if it is followed by
// another reuseGlobal test.
bool reuseGlobal =
false;
// Downcase TestBase to RuntimeTest.
static RuntimeTest* From(TestBase* test);
RuntimeTest();
virtual ~RuntimeTest();
// Initialize the context, possibly with one from a previously run test.
bool initContext(JSContext* maybeReusedContext);
// If this test is ok with its cx and global being reused, release this
// test's cx to be reused by another test.
JSContext* maybeForgetContext();
static void MaybeFreeContext(JSContext* maybeCx);
void uninit() override;
#define EXEC(s) \
do { \
if (!exec(s, __FILE__, __LINE__)) { \
return false; \
} \
}
while (
false)
bool exec(
const char* utf8,
const char* filename,
int lineno);
// Like exec(), but doesn't call fail() if JS::Evaluate returns false.
bool execDontReport(
const char* utf8,
const char* filename,
int lineno);
#define EVAL(s, vp) \
do { \
if (!evaluate(s, __FILE__, __LINE__, vp)) { \
return false; \
} \
}
while (
false)
bool evaluate(
const char* utf8,
const char* filename,
int lineno,
JS::MutableHandleValue vp);
std::string jsvalToSource(JS::HandleValue v);
std::string toSource(
char c);
std::string toSource(
long v);
std::string toSource(
unsigned long v);
std::string toSource(
long long v);
std::string toSource(
unsigned long long v);
std::string toSource(
double d);
std::string toSource(
unsigned int v);
std::string toSource(
int v);
std::string toSource(
bool v);
std::string toSource(JS::RegExpFlags flags);
std::string toSource(JSAtom* v);
// Note that in some still-supported GCC versions (we think anything before
// GCC 4.6), this template does not work when the second argument is
// nullptr. It infers type U = long int. Use CHECK_NULL instead.
template <
typename T,
typename U>
bool checkEqual(
const T& actual,
const U& expected,
const char* actualExpr,
const char* expectedExpr,
const char* filename,
int lineno) {
static_assert(std::is_signed_v<T> == std::is_signed_v<U>,
"using CHECK_EQUAL with different-signed inputs triggers "
"compiler warnings");
static_assert(
std::is_unsigned_v<T> == std::is_unsigned_v<U>,
"using CHECK_EQUAL with different-signed inputs triggers compiler "
"warnings");
if (actual == expected) {
return true;
}
fail(std::string(
"CHECK_EQUAL failed: expected (") + expectedExpr +
") = " + toSource(expected) +
", got (" + actualExpr +
") = " + toSource(actual),
filename, lineno);
return false;
}
#define CHECK_EQUAL(actual, expected) \
do { \
if (!checkEqual(actual, expected,
#actual,
#expected, __FILE__, \
__LINE__)) { \
return false; \
} \
}
while (
false)
template <
typename T>
bool checkNull(
const T* actual,
const char* actualExpr,
const char* filename,
int lineno) {
if (actual == nullptr) {
return true;
}
fail(std::string(
"CHECK_NULL failed: expected nullptr, got (") +
actualExpr +
") = " + toSource(actual),
filename, lineno);
return false;
}
#define CHECK_NULL(actual) \
do { \
if (!checkNull(actual,
#actual, __FILE__, __LINE__)) { \
return false; \
} \
}
while (
false)
bool checkSame(
const JS::Value& actualArg,
const JS::Value& expectedArg,
const char* actualExpr,
const char* expectedExpr,
const char* filename,
int lineno);
#define CHECK_SAME(actual, expected) \
do { \
if (!checkSame(actual, expected,
#actual,
#expected, __FILE__, \
__LINE__)) { \
return false; \
} \
}
while (
false)
#define CHECK(expr) \
do { \
if (!(expr)) { \
return fail(std::string(
"CHECK failed: " #expr), __FILE__, __LINE__); \
} \
}
while (
false)
void maybeAppendException(std::string& message) override;
static const JSClass* basicGlobalClass();
protected:
static void reportWarning(JSContext* cx, JSErrorReport* report);
static bool print(JSContext* cx,
unsigned argc, JS::Value* vp);
bool definePrint();
virtual JSContext* createContext();
virtual const JSClass* getGlobalClass() {
return basicGlobalClass(); }
virtual JSObject* createGlobal(JSPrincipals* principals = nullptr);
};
class FrontendTest :
public TestBase {
public:
FrontendTest();
virtual ~FrontendTest() {}
};
}
// namespace jsapitest
#define BEGIN_TEST_WITH_ATTRIBUTES_AND_EXTRA(testname, attrs, extra) \
class cls_
##testname :
public jsapitest::RuntimeTest { \
public: \
virtual const char* name() override {
return #testname; } \
extra
bool run() override attrs
#define BEGIN_TEST_WITH_ATTRIBUTES(testname, attrs) \
BEGIN_TEST_WITH_ATTRIBUTES_AND_EXTRA(testname, attrs, )
#define BEGIN_TEST(testname) BEGIN_TEST_WITH_ATTRIBUTES(testname, )
#define BEGIN_FRONTEND_TEST_WITH_ATTRIBUTES_AND_EXTRA(testname, attrs, extra) \
class cls_
##testname :
public jsapitest::FrontendTest { \
public: \
virtual const char* name() override {
return #testname; } \
extra
bool run() override attrs
#define BEGIN_FRONTEND_TEST_WITH_ATTRIBUTES(testname, attrs) \
BEGIN_FRONTEND_TEST_WITH_ATTRIBUTES_AND_EXTRA(testname, attrs, )
#define BEGIN_FRONTEND_TEST(testname) \
BEGIN_FRONTEND_TEST_WITH_ATTRIBUTES(testname, )
#define BEGIN_REUSABLE_TEST(testname) \
BEGIN_TEST_WITH_ATTRIBUTES_AND_EXTRA( \
testname, , cls_
##testname() : RuntimeTest() { reuseGlobal =
true; })
#define END_TEST(testname) \
} \
; \
MOZ_RUNINIT
static cls_
##testname cls_
##testname
##_instance;
/*
* A "fixture" is a subclass of RuntimeTest that holds common definitions
* for a set of tests. Each test that wants to use the fixture should use
* BEGIN_FIXTURE_TEST and END_FIXTURE_TEST, just as one would use BEGIN_TEST and
* END_TEST, but include the fixture class as the first argument. The fixture
* class's declarations are then in scope for the test bodies.
*/
#define BEGIN_FIXTURE_TEST(fixture, testname) \
class cls_
##testname :
public fixture { \
public: \
virtual const char* name() override {
return #testname; } \
bool run() override
#define END_FIXTURE_TEST(fixture, testname) \
} \
; \
MOZ_RUNINIT
static cls_
##testname cls_
##testname
##_instance;
/*
* A class for creating and managing one temporary file.
*
* We could use the ISO C temporary file functions here, but those try to
* create files in the root directory on Windows, which fails for users
* without Administrator privileges.
*/
class TempFile {
const char* name;
FILE* stream;
public:
TempFile();
~TempFile();
/*
* Return a stream for a temporary file named |fileName|. Infallible.
* Use only once per TempFile instance. If the file is not explicitly
* closed and deleted via the member functions below, this object's
* destructor will clean them up.
*/
FILE* open(
const char* fileName);
/* Close the temporary file's stream. */
void close();
/* Delete the temporary file. */
void remove();
};
// Just a wrapper around JSPrincipals that allows static construction.
class TestJSPrincipals :
public JSPrincipals {
public:
explicit TestJSPrincipals(
int rc =
0);
bool write(JSContext* cx, JSStructuredCloneWriter* writer) override;
bool isSystemPrincipal() override {
return true; }
bool isAddonPrincipal() override {
return true; }
};
// A class that simulates externally memory-managed data, for testing with
// array buffers.
class ExternalData {
char* contents_;
size_t len_;
bool uniquePointerCreated_ =
false;
public:
explicit ExternalData(
const char* str);
size_t len()
const {
return len_; }
void* contents()
const {
return contents_; }
char* asString()
const {
return contents_; }
bool wasFreed()
const {
return !contents_; }
void free();
mozilla::UniquePtr<
void, JS::BufferContentsDeleter> pointer();
static void freeCallback(
void* contents,
void* userData);
};
class AutoGCParameter {
JSContext* cx_;
JSGCParamKey key_;
uint32_t value_;
public:
AutoGCParameter(JSContext* cx, JSGCParamKey key, uint32_t value);
~AutoGCParameter();
};
/*
* Temporarily disable the GC zeal setting. This is only useful in tests that
* need very explicit GC behavior and should not be used elsewhere.
*/
class AutoLeaveZeal {
#ifdef JS_GC_ZEAL
JSContext* cx_;
uint32_t zealBits_;
uint32_t frequency_;
#endif
public:
explicit AutoLeaveZeal(JSContext* cx);
~AutoLeaveZeal();
};
#endif /* jsapi_tests_tests_h */