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      1 //===- unittests/AST/DeclTest.cpp --- Declaration tests -------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // Unit tests for the ASTVector container.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "llvm/Support/Compiler.h"
     15 #include "clang/AST/ASTContext.h"
     16 #include "clang/AST/ASTVector.h"
     17 #include "clang/Basic/Builtins.h"
     18 #include "gtest/gtest.h"
     19 
     20 using namespace clang;
     21 
     22 namespace clang {
     23 namespace ast {
     24 
     25 namespace {
     26 class ASTVectorTest : public ::testing::Test {
     27 protected:
     28   ASTVectorTest()
     29       : FileMgr(FileMgrOpts), DiagID(new DiagnosticIDs()),
     30         Diags(DiagID, new DiagnosticOptions, new IgnoringDiagConsumer()),
     31         SourceMgr(Diags, FileMgr), Idents(LangOpts, nullptr),
     32         Ctxt(LangOpts, SourceMgr, Idents, Sels, Builtins) {}
     33 
     34   FileSystemOptions FileMgrOpts;
     35   FileManager FileMgr;
     36   IntrusiveRefCntPtr<DiagnosticIDs> DiagID;
     37   DiagnosticsEngine Diags;
     38   SourceManager SourceMgr;
     39   LangOptions LangOpts;
     40   IdentifierTable Idents;
     41   SelectorTable Sels;
     42   Builtin::Context Builtins;
     43   ASTContext Ctxt;
     44 };
     45 } // unnamed namespace
     46 
     47 TEST_F(ASTVectorTest, Compile) {
     48   ASTVector<int> V;
     49   V.insert(Ctxt, V.begin(), 0);
     50 }
     51 
     52 TEST_F(ASTVectorTest, InsertFill) {
     53   ASTVector<double> V;
     54 
     55   // Ensure returned iterator points to first of inserted elements
     56   auto I = V.insert(Ctxt, V.begin(), 5, 1.0);
     57   ASSERT_EQ(V.begin(), I);
     58 
     59   // Check non-empty case as well
     60   I = V.insert(Ctxt, V.begin() + 1, 5, 1.0);
     61   ASSERT_EQ(V.begin() + 1, I);
     62 
     63   // And insert-at-end
     64   I = V.insert(Ctxt, V.end(), 5, 1.0);
     65   ASSERT_EQ(V.end() - 5, I);
     66 }
     67 
     68 TEST_F(ASTVectorTest, InsertEmpty) {
     69   ASTVector<double> V;
     70 
     71   // Ensure no pointer overflow when inserting empty range
     72   int Values[] = { 0, 1, 2, 3 };
     73   ArrayRef<int> IntVec(Values);
     74   auto I = V.insert(Ctxt, V.begin(), IntVec.begin(), IntVec.begin());
     75   ASSERT_EQ(V.begin(), I);
     76   ASSERT_TRUE(V.empty());
     77 
     78   // Non-empty range
     79   I = V.insert(Ctxt, V.begin(), IntVec.begin(), IntVec.end());
     80   ASSERT_EQ(V.begin(), I);
     81 
     82   // Non-Empty Vector, empty range
     83   I = V.insert(Ctxt, V.end(), IntVec.begin(), IntVec.begin());
     84   ASSERT_EQ(V.begin() + IntVec.size(), I);
     85 
     86   // Non-Empty Vector, non-empty range
     87   I = V.insert(Ctxt, V.end(), IntVec.begin(), IntVec.end());
     88   ASSERT_EQ(V.begin() + IntVec.size(), I);
     89 }
     90 
     91 } // end namespace ast
     92 } // end namespace clang
     93