//===- llvm/tools/gollvm/unittests/BackendCore/TestUtilstest.cpp -===//
//
// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//
//===----------------------------------------------------------------------===//

#include "TestUtils.h"
#include "gtest/gtest.h"

using namespace llvm;
using namespace goBackendUnitTests;

namespace {

TEST(TestUtilsTests, ContainsTokens) {
  EXPECT_TRUE(containstokens("a b c   d", "b c"));
  EXPECT_TRUE(containstokens("a b c   d", ""));
  EXPECT_FALSE(containstokens("a b c   d", "b d"));
  EXPECT_FALSE(containstokens("a b c   d", "a b c d e f"));
}

TEST(TestUtilsTests, DiffTokens) {
  std::string reason;
  EXPECT_TRUE(difftokens("a b c   d", "   a        b c d   ", reason));
  EXPECT_FALSE(difftokens("a b c", "a b c d", reason));
  EXPECT_TRUE(containstokens(reason, "lengths differ (3 vs 4) extra expected"));
  EXPECT_FALSE(difftokens("a b c", "a b", reason));
  EXPECT_TRUE(containstokens(reason, "lengths differ (3 vs 2) extra result"));
  EXPECT_FALSE(difftokens("a b c", "a d c", reason));
  EXPECT_TRUE(containstokens(reason, "token vector diff at slot 1"));
  EXPECT_FALSE(difftokens("x b c", "a b c", reason));
  EXPECT_TRUE(containstokens(reason, "token vector diff at slot 0"));
  EXPECT_FALSE(difftokens("a b c", "a b x", reason));
  EXPECT_TRUE(containstokens(reason, "token vector diff at slot 2"));
}

}