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SegmentTest.cpp

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SegmentTest.cpp

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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <gtest/gtest.h>
#include <hermes/CompileJS.h>
#include <hermes/hermes.h>
#include "SegmentTestCompile.h"
using namespace facebook::jsi;
using namespace facebook::hermes;
namespace {
TEST(SegmentTest, LoadSegmentTest) {
std::shared_ptr<HermesRuntime> rt = makeHermesRuntime();
std::string mainCode = R"(
loadSegment(1, require.context);
var foo = require('./foo.js');
x = foo.x;
)";
std::string segmentCode = R"(
exports.x = 42;
)";
auto code = hermes::genSplitCode(mainCode, segmentCode);
auto mainBC = std::make_unique<StringBuffer>(std::move(code.first));
auto segmentBC = std::make_unique<StringBuffer>(std::move(code.second));
Function loadSegment = Function::createFromHostFunction(
*rt,
PropNameID::forAscii(*rt, "loadSegment"),
2,
[&segmentBC](
Runtime &rt, const Value &thisVal, const Value *args, size_t count) {
if (count < 2) {
return Value::undefined();
}
static_cast<HermesRuntime &>(rt).loadSegment(
std::move(segmentBC), args[1]);
return Value::undefined();
});
rt->global().setProperty(*rt, "loadSegment", loadSegment);
rt->evaluateJavaScript(std::move(mainBC), "main.js");
ASSERT_EQ(rt->global().getProperty(*rt, "x").getNumber(), 42);
}
} // namespace
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