lldb/unittests/Interpreter/TestRegexCommand.cpp

   1 //===-- TestRegexCommand.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 "Commands/CommandObjectRegexCommand.h"
  10 #include "llvm/Testing/Support/Error.h"
  11 #include "gtest/gtest.h"
  12
  13 using namespace lldb_private;
  14 using namespace lldb;
  15
  16 namespace {
  17 class TestRegexCommand : public CommandObjectRegexCommand {
  18 public:
  19   using CommandObjectRegexCommand::SubstituteVariables;
  20
  21   static std::string
  22   Substitute(llvm::StringRef input,
  23              const llvm::SmallVectorImpl<llvm::StringRef> &replacements) {
  24     llvm::Expected<std::string> str = SubstituteVariables(input, replacements);
  25     if (!str)
  26       return llvm::toString(str.takeError());
  27     return *str;
  28   }
  29 };
  30 } // namespace
  31
  32 TEST(RegexCommandTest, SubstituteVariablesSuccess) {
  33   const llvm::SmallVector<llvm::StringRef, 4> substitutions = {"all", "foo",
  34                                                                "bar", "baz"};
  35
  36   EXPECT_EQ(TestRegexCommand::Substitute("%0", substitutions), "all");
  37   EXPECT_EQ(TestRegexCommand::Substitute("%1", substitutions), "foo");
  38   EXPECT_EQ(TestRegexCommand::Substitute("%2", substitutions), "bar");
  39   EXPECT_EQ(TestRegexCommand::Substitute("%3", substitutions), "baz");
  40   EXPECT_EQ(TestRegexCommand::Substitute("%1%2%3", substitutions), "foobarbaz");
  41   EXPECT_EQ(TestRegexCommand::Substitute("#%1#%2#%3#", substitutions),
  42             "#foo#bar#baz#");
  43 }
  44
  45 TEST(RegexCommandTest, SubstituteVariablesFailed) {
  46   const llvm::SmallVector<llvm::StringRef, 4> substitutions = {"all", "foo",
  47                                                                "bar", "baz"};
  48
  49   ASSERT_THAT_EXPECTED(
  50       TestRegexCommand::SubstituteVariables("%1%2%3%4", substitutions),
  51       llvm::Failed());
  52   ASSERT_THAT_EXPECTED(
  53       TestRegexCommand::SubstituteVariables("%5", substitutions),
  54       llvm::Failed());
  55   ASSERT_THAT_EXPECTED(
  56       TestRegexCommand::SubstituteVariables("%11", substitutions),
  57       llvm::Failed());
  58 }
  59
  60 TEST(RegexCommandTest, SubstituteVariablesNoRecursion) {
  61   const llvm::SmallVector<llvm::StringRef, 4> substitutions = {"all", "%2",
  62                                                                "%3", "%4"};
  63   EXPECT_EQ(TestRegexCommand::Substitute("%0", substitutions), "all");
  64   EXPECT_EQ(TestRegexCommand::Substitute("%1", substitutions), "%2");
  65   EXPECT_EQ(TestRegexCommand::Substitute("%2", substitutions), "%3");
  66   EXPECT_EQ(TestRegexCommand::Substitute("%3", substitutions), "%4");
  67   EXPECT_EQ(TestRegexCommand::Substitute("%1%2%3", substitutions), "%2%3%4");
  68 }