text: //===- llvm/unittest/IR/DebugInfo.cpp - DebugInfo 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/IR/DebugInfoMetadata.h"
  #include "gtest/gtest.h"
  
  using namespace llvm;
  
  namespace {
  
  TEST(DINodeTest, getFlag) {
    // Some valid flags.
    EXPECT_EQ(DINode::FlagPublic, DINode::getFlag("DIFlagPublic"));
    EXPECT_EQ(DINode::FlagProtected, DINode::getFlag("DIFlagProtected"));
    EXPECT_EQ(DINode::FlagPrivate, DINode::getFlag("DIFlagPrivate"));
    EXPECT_EQ(DINode::FlagVector, DINode::getFlag("DIFlagVector"));
    EXPECT_EQ(DINode::FlagRValueReference,
              DINode::getFlag("DIFlagRValueReference"));
  
    // FlagAccessibility shouldn't work.
    EXPECT_EQ(0u, DINode::getFlag("DIFlagAccessibility"));
  
    // Some other invalid strings.
    EXPECT_EQ(0u, DINode::getFlag("FlagVector"));
    EXPECT_EQ(0u, DINode::getFlag("Vector"));
    EXPECT_EQ(0u, DINode::getFlag("other things"));
    EXPECT_EQ(0u, DINode::getFlag("DIFlagOther"));
  }
  
  TEST(DINodeTest, getFlagString) {
    // Some valid flags.
    EXPECT_EQ(StringRef("DIFlagPublic"),
              DINode::getFlagString(DINode::FlagPublic));
    EXPECT_EQ(StringRef("DIFlagProtected"),
              DINode::getFlagString(DINode::FlagProtected));
    EXPECT_EQ(StringRef("DIFlagPrivate"),
              DINode::getFlagString(DINode::FlagPrivate));
    EXPECT_EQ(StringRef("DIFlagVector"),
              DINode::getFlagString(DINode::FlagVector));
    EXPECT_EQ(StringRef("DIFlagRValueReference"),
              DINode::getFlagString(DINode::FlagRValueReference));
  
    // FlagAccessibility actually equals FlagPublic.
    EXPECT_EQ(StringRef("DIFlagPublic"),
              DINode::getFlagString(DINode::FlagAccessibility));
  
    // Some other invalid flags.
    EXPECT_EQ(StringRef(),
              DINode::getFlagString(DINode::FlagPublic | DINode::FlagVector));
    EXPECT_EQ(StringRef(), DINode::getFlagString(DINode::FlagFwdDecl |
                                                 DINode::FlagArtificial));
    EXPECT_EQ(StringRef(),
              DINode::getFlagString(static_cast<DINode::DIFlags>(0xffff)));
  }
  
  TEST(DINodeTest, splitFlags) {
  // Some valid flags.
  #define CHECK_SPLIT(FLAGS, VECTOR, REMAINDER)                                  \
    {                                                                            \
      SmallVector<DINode::DIFlags, 8> V;                                         \
      EXPECT_EQ(REMAINDER, DINode::splitFlags(FLAGS, V));                        \
      EXPECT_TRUE(makeArrayRef(V).equals(VECTOR));                               \
    }
    CHECK_SPLIT(DINode::FlagPublic, {DINode::FlagPublic}, DINode::FlagZero);
    CHECK_SPLIT(DINode::FlagProtected, {DINode::FlagProtected}, DINode::FlagZero);
    CHECK_SPLIT(DINode::FlagPrivate, {DINode::FlagPrivate}, DINode::FlagZero);
    CHECK_SPLIT(DINode::FlagVector, {DINode::FlagVector}, DINode::FlagZero);
    CHECK_SPLIT(DINode::FlagRValueReference, {DINode::FlagRValueReference},
                DINode::FlagZero);
    DINode::DIFlags Flags[] = {DINode::FlagFwdDecl, DINode::FlagVector};
    CHECK_SPLIT(DINode::FlagFwdDecl | DINode::FlagVector, Flags,
                DINode::FlagZero);
    CHECK_SPLIT(DINode::FlagZero, {}, DINode::FlagZero);
  #undef CHECK_SPLIT
  }
  
  } // end namespace
  