llvm/unittests/Support/SymbolRemappingReaderTest.cpp

   1 //===- unittests/Support/SymbolRemappingReaderTest.cpp --------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/Support/SymbolRemappingReader.h"
  10 #include "llvm/Support/MemoryBuffer.h"
  11 #include "gtest/gtest.h"
  12
  13 using namespace llvm;
  14
  15 namespace {
  16 class SymbolRemappingReaderTest : public testing::Test {
  17 public:
  18   std::unique_ptr<MemoryBuffer> Buffer;
  19   SymbolRemappingReader Reader;
  20
  21   std::string readWithErrors(StringRef Text, StringRef BufferName) {
  22     Buffer = MemoryBuffer::getMemBuffer(Text, BufferName);
  23     Error E = Reader.read(*Buffer);
  24     EXPECT_TRUE((bool)E);
  25     return toString(std::move(E));
  26   }
  27
  28   void read(StringRef Text, StringRef BufferName) {
  29     Buffer = MemoryBuffer::getMemBuffer(Text, BufferName);
  30     Error E = Reader.read(*Buffer);
  31     EXPECT_FALSE((bool)E);
  32   }
  33 };
  34 } // unnamed namespace
  35
  36 TEST_F(SymbolRemappingReaderTest, ParseErrors) {
  37   EXPECT_EQ(readWithErrors("error", "foo.map"),
  38             "foo.map:1: Expected 'kind mangled_name mangled_name', "
  39             "found 'error'");
  40
  41   EXPECT_EQ(readWithErrors("error m1 m2", "foo.map"),
  42             "foo.map:1: Invalid kind, expected 'name', 'type', or 'encoding', "
  43             "found 'error'");
  44 }
  45
  46 TEST_F(SymbolRemappingReaderTest, DemanglingErrors) {
  47   EXPECT_EQ(readWithErrors("type i banana", "foo.map"),
  48             "foo.map:1: Could not demangle 'banana' as a <type>; "
  49             "invalid mangling?");
  50   EXPECT_EQ(readWithErrors("name i 1X", "foo.map"),
  51             "foo.map:1: Could not demangle 'i' as a <name>; "
  52             "invalid mangling?");
  53   EXPECT_EQ(readWithErrors("name 1X 1fv", "foo.map"),
  54             "foo.map:1: Could not demangle '1fv' as a <name>; "
  55             "invalid mangling?");
  56   EXPECT_EQ(readWithErrors("encoding 1fv 1f1gE", "foo.map"),
  57             "foo.map:1: Could not demangle '1f1gE' as a <encoding>; "
  58             "invalid mangling?");
  59 }
  60
  61 TEST_F(SymbolRemappingReaderTest, BadMappingOrder) {
  62   StringRef Map = R"(
  63     # N::foo == M::bar
  64     name N1N3fooE N1M3barE
  65
  66     # N:: == M::
  67     name 1N 1M
  68   )";
  69   EXPECT_EQ(readWithErrors(Map, "foo.map"),
  70             "foo.map:6: Manglings '1N' and '1M' have both been used in prior "
  71             "remappings. Move this remapping earlier in the file.");
  72 }
  73
  74 TEST_F(SymbolRemappingReaderTest, RemappingsAdded) {
  75   StringRef Map = R"(
  76     # A::foo == B::bar
  77     name N1A3fooE N1B3barE
  78
  79     # int == long
  80     type i l
  81
  82     # void f<int>() = void g<int>()
  83     encoding 1fIiEvv 1gIiEvv
  84   )";
  85
  86   read(Map, "foo.map");
  87   auto Key = Reader.insert("_ZN1B3bar3bazIiEEvv");
  88   EXPECT_NE(Key, SymbolRemappingReader::Key());
  89   EXPECT_EQ(Key, Reader.lookup("_ZN1A3foo3bazIlEEvv"));
  90   EXPECT_NE(Key, Reader.lookup("_ZN1C3foo3bazIlEEvv"));
  91
  92   Key = Reader.insert("_Z1fIiEvv");
  93   EXPECT_NE(Key, SymbolRemappingReader::Key());
  94   EXPECT_EQ(Key, Reader.lookup("_Z1gIlEvv"));
  95 }