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//===- llvm/unittest/Support/FileCheckTest.cpp - FileCheck tests --===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/FileCheck.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
class FileCheckTest : public ::testing::Test {};
TEST_F(FileCheckTest, FileCheckContext) {
FileCheckPatternContext Cxt;
std::vector<std::string> GlobalDefines;
// Define local and global variables from command-line.
GlobalDefines.emplace_back(std::string("LocalVar=FOO"));
Cxt.defineCmdlineVariables(GlobalDefines);
// Check defined variables are present and undefined is absent.
StringRef LocalVarStr = "LocalVar";
StringRef UnknownVarStr = "UnknownVar";
llvm::Optional<StringRef> LocalVar = Cxt.getVarValue(LocalVarStr);
llvm::Optional<StringRef> UnknownVar = Cxt.getVarValue(UnknownVarStr);
EXPECT_TRUE(LocalVar);
EXPECT_EQ(*LocalVar, "FOO");
EXPECT_FALSE(UnknownVar);
// Clear local variables and check they become absent.
Cxt.clearLocalVars();
LocalVar = Cxt.getVarValue(LocalVarStr);
EXPECT_FALSE(LocalVar);
// Redefine global variables and check variables are defined again.
GlobalDefines.emplace_back(std::string("$GlobalVar=BAR"));
Cxt.defineCmdlineVariables(GlobalDefines);
StringRef GlobalVarStr = "$GlobalVar";
llvm::Optional<StringRef> GlobalVar = Cxt.getVarValue(GlobalVarStr);
EXPECT_TRUE(GlobalVar);
EXPECT_EQ(*GlobalVar, "BAR");
// Clear local variables and check global variables remain defined.
Cxt.clearLocalVars();
GlobalVar = Cxt.getVarValue(GlobalVarStr);
EXPECT_TRUE(GlobalVar);
}
} // namespace
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