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ESTreeTest.cpp
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73 lines (59 loc) · 1.94 KB
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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 "llvh/Support/Casting.h"
#include "llvh/Support/SourceMgr.h"
#include "llvh/Support/YAMLParser.h"
#include "hermes/AST/ASTBuilder.h"
#include "hermes/AST/ESTreeVisitors.h"
#include "hermes/Parser/JSONParser.h"
#include "gtest/gtest.h"
using llvh::cast;
using llvh::dyn_cast;
using namespace hermes;
namespace {
const char *SimpleESTreeProgram =
" {"
" \"type\": \"Program\","
" \"body\": ["
" { "
" \"type\": \"FunctionDeclaration\","
" \"id\": {"
" \"type\": \"Identifier\","
" \"name\": \"my_name_is_foo\""
" }, "
" \"params\": [], "
" \"body\": {"
" \"type\": \"BlockStatement\","
" \"body\": [], "
" }, "
" \"generator\": false,"
" \"async\": false"
" } "
" ], "
" }";
TEST(ESTreeTest, EmptyTest) {
Context context;
parser::JSONFactory factory(context.getAllocator());
parser::JSONParser parser(
factory, SimpleESTreeProgram, context.getSourceErrorManager());
auto parsed = parser.parse();
ASSERT_TRUE(parsed.hasValue());
auto ast = ESTree::buildAST(context, parsed.getValue());
ASSERT_TRUE(ast.hasValue());
auto Node = ast.getValue();
/// Collect some information about the graph traits.
ESTree::TreeTrait TT;
Node->visit(TT);
EXPECT_EQ((int)TT.CurrDepth, 0);
EXPECT_EQ((int)TT.MaxDepth, 3);
EXPECT_EQ((int)TT.Count, 4);
auto &ProgramBody = cast<ESTree::ProgramNode>(Node)->_body;
auto FuncDecl = cast<ESTree::FunctionDeclarationNode>(&ProgramBody.front());
auto Name = cast<ESTree::IdentifierNode>(FuncDecl->_id)->_name;
EXPECT_STREQ("my_name_is_foo", Name->c_str());
}
} // end anonymous namespace