Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/lldb/unittests/Interpreter/CMakeLists.txt

@@ -0,0 +1,13 @@
+add_lldb_unittest(InterpreterTests
+  TestArgs.cpp
+  TestCompletion.cpp
+
+  LINK_LIBS
+    lldbInterpreter
+    lldbUtilityHelpers
+  )
+
+target_link_libraries(InterpreterTests
+  PRIVATE
+  ${PYTHON_LIBRARY}
+  )

external/llvm-project/lldb/unittests/Interpreter/TestArgs.cpp

@@ -0,0 +1,362 @@
+//===-- ArgsTest.cpp --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+
+#include "lldb/Interpreter/Args.h"
+#include "lldb/Utility/StringList.h"
+
+#include <limits>
+#include <sstream>
+
+using namespace lldb_private;
+
+TEST(ArgsTest, TestSingleArg) {
+  Args args;
+  args.SetCommandString("arg");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "arg");
+}
+
+TEST(ArgsTest, TestSingleQuotedArgWithSpace) {
+  Args args;
+  args.SetCommandString("\"arg with space\"");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "arg with space");
+}
+
+TEST(ArgsTest, TestSingleArgWithQuotedSpace) {
+  Args args;
+  args.SetCommandString("arg\\ with\\ space");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "arg with space");
+}
+
+TEST(ArgsTest, TestMultipleArgs) {
+  Args args;
+  args.SetCommandString("this has multiple args");
+  EXPECT_EQ(4u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "this");
+  EXPECT_STREQ(args.GetArgumentAtIndex(1), "has");
+  EXPECT_STREQ(args.GetArgumentAtIndex(2), "multiple");
+  EXPECT_STREQ(args.GetArgumentAtIndex(3), "args");
+}
+
+TEST(ArgsTest, TestOverwriteArgs) {
+  Args args;
+  args.SetCommandString("this has multiple args");
+  EXPECT_EQ(4u, args.GetArgumentCount());
+  args.SetCommandString("arg");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "arg");
+}
+
+TEST(ArgsTest, TestAppendArg) {
+  Args args;
+  args.SetCommandString("first_arg");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+  args.AppendArgument(llvm::StringRef("second_arg"));
+  EXPECT_EQ(2u, args.GetArgumentCount());
+  EXPECT_STREQ(args.GetArgumentAtIndex(0), "first_arg");
+  EXPECT_STREQ(args.GetArgumentAtIndex(1), "second_arg");
+}
+
+TEST(ArgsTest, TestInsertArg) {
+  Args args;
+  args.AppendArgument("1");
+  args.AppendArgument("2");
+  args.AppendArgument("3");
+  args.InsertArgumentAtIndex(1, "1.5");
+  args.InsertArgumentAtIndex(4, "3.5");
+
+  ASSERT_EQ(5u, args.GetArgumentCount());
+  EXPECT_STREQ("1", args.GetArgumentAtIndex(0));
+  EXPECT_STREQ("1.5", args.GetArgumentAtIndex(1));
+  EXPECT_STREQ("2", args.GetArgumentAtIndex(2));
+  EXPECT_STREQ("3", args.GetArgumentAtIndex(3));
+  EXPECT_STREQ("3.5", args.GetArgumentAtIndex(4));
+}
+
+TEST(ArgsTest, TestArgv) {
+  Args args;
+  EXPECT_EQ(nullptr, args.GetArgumentVector());
+
+  args.AppendArgument("1");
+  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[1]);
+
+  args.AppendArgument("2");
+  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[2]);
+
+  args.AppendArgument("3");
+  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[3]);
+
+  args.InsertArgumentAtIndex(1, "1.5");
+  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[3]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[4]);
+
+  args.InsertArgumentAtIndex(4, "3.5");
+  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[3]);
+  EXPECT_NE(nullptr, args.GetArgumentVector()[4]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[5]);
+}
+
+TEST(ArgsTest, StringListConstructor) {
+  StringList list;
+  list << "foo" << "bar" << "baz";
+  Args args(list);
+  ASSERT_EQ(3u, args.GetArgumentCount());
+  EXPECT_EQ("foo", args[0].ref);
+  EXPECT_EQ("bar", args[1].ref);
+  EXPECT_EQ("baz", args[2].ref);
+}
+
+TEST(ArgsTest, GetQuotedCommandString) {
+  Args args;
+  const char *str = "process launch -o stdout.txt -- \"a b c\"";
+  args.SetCommandString(str);
+
+  std::string stdstr;
+  ASSERT_TRUE(args.GetQuotedCommandString(stdstr));
+  EXPECT_EQ(str, stdstr);
+}
+
+TEST(ArgsTest, BareSingleQuote) {
+  Args args;
+  args.SetCommandString("a\\'b");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+
+  EXPECT_STREQ("a'b", args.GetArgumentAtIndex(0));
+}
+
+TEST(ArgsTest, DoubleQuotedItem) {
+  Args args;
+  args.SetCommandString("\"a b c\"");
+  EXPECT_EQ(1u, args.GetArgumentCount());
+
+  EXPECT_STREQ("a b c", args.GetArgumentAtIndex(0));
+}
+
+TEST(ArgsTest, AppendArguments) {
+  Args args;
+  const char *argv[] = {"1", "2", nullptr};
+  const char *argv2[] = {"3", "4", nullptr};
+
+  args.AppendArguments(argv);
+  ASSERT_EQ(2u, args.GetArgumentCount());
+  EXPECT_STREQ("1", args.GetArgumentVector()[0]);
+  EXPECT_STREQ("2", args.GetArgumentVector()[1]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[2]);
+  EXPECT_STREQ("1", args.GetArgumentAtIndex(0));
+  EXPECT_STREQ("2", args.GetArgumentAtIndex(1));
+
+  args.AppendArguments(argv2);
+  ASSERT_EQ(4u, args.GetArgumentCount());
+  EXPECT_STREQ("1", args.GetArgumentVector()[0]);
+  EXPECT_STREQ("2", args.GetArgumentVector()[1]);
+  EXPECT_STREQ("3", args.GetArgumentVector()[2]);
+  EXPECT_STREQ("4", args.GetArgumentVector()[3]);
+  EXPECT_EQ(nullptr, args.GetArgumentVector()[4]);
+  EXPECT_STREQ("1", args.GetArgumentAtIndex(0));
+  EXPECT_STREQ("2", args.GetArgumentAtIndex(1));
+  EXPECT_STREQ("3", args.GetArgumentAtIndex(2));
+  EXPECT_STREQ("4", args.GetArgumentAtIndex(3));
+}
+
+TEST(ArgsTest, GetArgumentArrayRef) {
+  Args args("foo bar");
+  auto ref = args.GetArgumentArrayRef();
+  ASSERT_EQ(2u, ref.size());
+  EXPECT_STREQ("foo", ref[0]);
+  EXPECT_STREQ("bar", ref[1]);
+}
+
+TEST(ArgsTest, StringToBoolean) {
+  bool success = false;
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("true"), false, nullptr));
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("on"), false, nullptr));
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("yes"), false, nullptr));
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("1"), false, nullptr));
+
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("true"), false, &success));
+  EXPECT_TRUE(success);
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("on"), false, &success));
+  EXPECT_TRUE(success);
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("yes"), false, &success));
+  EXPECT_TRUE(success);
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("1"), false, &success));
+  EXPECT_TRUE(success);
+
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("false"), true, nullptr));
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("off"), true, nullptr));
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("no"), true, nullptr));
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("0"), true, nullptr));
+
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("false"), true, &success));
+  EXPECT_TRUE(success);
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("off"), true, &success));
+  EXPECT_TRUE(success);
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("no"), true, &success));
+  EXPECT_TRUE(success);
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("0"), true, &success));
+  EXPECT_TRUE(success);
+
+  EXPECT_FALSE(Args::StringToBoolean(llvm::StringRef("10"), false, &success));
+  EXPECT_FALSE(success);
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef("10"), true, &success));
+  EXPECT_FALSE(success);
+  EXPECT_TRUE(Args::StringToBoolean(llvm::StringRef(""), true, &success));
+  EXPECT_FALSE(success);
+}
+
+TEST(ArgsTest, StringToChar) {
+  bool success = false;
+
+  EXPECT_EQ('A', Args::StringToChar("A", 'B', nullptr));
+  EXPECT_EQ('B', Args::StringToChar("B", 'A', nullptr));
+
+  EXPECT_EQ('A', Args::StringToChar("A", 'B', &success));
+  EXPECT_TRUE(success);
+  EXPECT_EQ('B', Args::StringToChar("B", 'A', &success));
+  EXPECT_TRUE(success);
+
+  EXPECT_EQ('A', Args::StringToChar("", 'A', &success));
+  EXPECT_FALSE(success);
+  EXPECT_EQ('A', Args::StringToChar("ABC", 'A', &success));
+  EXPECT_FALSE(success);
+}
+
+TEST(ArgsTest, StringToScriptLanguage) {
+  bool success = false;
+
+  EXPECT_EQ(lldb::eScriptLanguageDefault,
+            Args::StringToScriptLanguage(llvm::StringRef("default"),
+                                         lldb::eScriptLanguageNone, nullptr));
+  EXPECT_EQ(lldb::eScriptLanguagePython,
+            Args::StringToScriptLanguage(llvm::StringRef("python"),
+                                         lldb::eScriptLanguageNone, nullptr));
+  EXPECT_EQ(lldb::eScriptLanguageNone,
+            Args::StringToScriptLanguage(llvm::StringRef("none"),
+                                         lldb::eScriptLanguagePython, nullptr));
+
+  EXPECT_EQ(lldb::eScriptLanguageDefault,
+            Args::StringToScriptLanguage(llvm::StringRef("default"),
+                                         lldb::eScriptLanguageNone, &success));
+  EXPECT_TRUE(success);
+  EXPECT_EQ(lldb::eScriptLanguagePython,
+            Args::StringToScriptLanguage(llvm::StringRef("python"),
+                                         lldb::eScriptLanguageNone, &success));
+  EXPECT_TRUE(success);
+  EXPECT_EQ(lldb::eScriptLanguageNone,
+            Args::StringToScriptLanguage(llvm::StringRef("none"),
+                                         lldb::eScriptLanguagePython,
+                                         &success));
+  EXPECT_TRUE(success);
+
+  EXPECT_EQ(lldb::eScriptLanguagePython,
+            Args::StringToScriptLanguage(llvm::StringRef("invalid"),
+                                         lldb::eScriptLanguagePython,
+                                         &success));
+  EXPECT_FALSE(success);
+}
+
+TEST(ArgsTest, StringToVersion) {}
+
+// Environment Variable Tests
+
+class EnvVarFixture: public ::testing::Test {
+protected:
+
+    void SetUp() {
+        args.AppendArgument(llvm::StringRef("Arg1=foo"));
+        args.AppendArgument(llvm::StringRef("Arg2"));
+        args.AppendArgument(llvm::StringRef("Arg3=bar"));
+    }
+
+    size_t GetIndexForEnvVar(llvm::StringRef envvar_name) {
+        size_t argument_index = std::numeric_limits<size_t>::max();
+        EXPECT_TRUE(args.ContainsEnvironmentVariable(envvar_name,
+                                                     &argument_index));
+        EXPECT_LT(argument_index, args.GetArgumentCount());
+        return argument_index;
+    }
+
+    Args  args;
+};
+
+
+TEST_F(EnvVarFixture, TestContainsEnvironmentVariableNoValue) {
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(llvm::StringRef("Arg2")));
+}
+
+TEST_F(EnvVarFixture, TestContainsEnvironmentVariableWithValue) {
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(llvm::StringRef("Arg3")));
+}
+
+TEST_F(EnvVarFixture, TestContainsEnvironmentVariableNonExistentVariable) {
+    auto nonexistent_envvar = llvm::StringRef("ThisEnvVarShouldNotExist");
+    EXPECT_FALSE(args.ContainsEnvironmentVariable(nonexistent_envvar));
+}
+
+TEST_F(EnvVarFixture, TestReplaceEnvironmentVariableInitialNoValueWithNoValue) {
+    auto envvar_name = llvm::StringRef("Arg2");
+    auto argument_index = GetIndexForEnvVar(envvar_name);
+
+    args.AddOrReplaceEnvironmentVariable(envvar_name, llvm::StringRef(""));
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(envvar_name));
+    EXPECT_EQ(envvar_name, args.GetArgumentAtIndex(argument_index));
+}
+
+TEST_F(EnvVarFixture, TestReplaceEnvironmentVariableInitialNoValueWithValue) {
+    auto envvar_name = llvm::StringRef("Arg2");
+    auto argument_index = GetIndexForEnvVar(envvar_name);
+
+    auto new_value = llvm::StringRef("NewValue");
+    args.AddOrReplaceEnvironmentVariable(envvar_name, new_value);
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(envvar_name));
+
+    std::stringstream stream;
+    stream << envvar_name.str() << '=' << new_value.str();
+    EXPECT_EQ(llvm::StringRef(stream.str()),
+              args.GetArgumentAtIndex(argument_index));
+}
+
+TEST_F(EnvVarFixture, TestReplaceEnvironmentVariableInitialValueWithNoValue) {
+    auto envvar_name = llvm::StringRef("Arg1");
+    auto argument_index = GetIndexForEnvVar(envvar_name);
+
+    args.AddOrReplaceEnvironmentVariable(envvar_name, llvm::StringRef(""));
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(envvar_name));
+    EXPECT_EQ(envvar_name, args.GetArgumentAtIndex(argument_index));
+}
+
+TEST_F(EnvVarFixture, TestReplaceEnvironmentVariableInitialValueWithValue) {
+    auto envvar_name = llvm::StringRef("Arg1");
+    auto argument_index = GetIndexForEnvVar(envvar_name);
+
+    auto new_value = llvm::StringRef("NewValue");
+    args.AddOrReplaceEnvironmentVariable(envvar_name, new_value);
+    EXPECT_TRUE(args.ContainsEnvironmentVariable(envvar_name));
+
+    std::stringstream stream;
+    stream << envvar_name.str() << '=' << new_value.str();
+    EXPECT_EQ(llvm::StringRef(stream.str()),
+              args.GetArgumentAtIndex(argument_index));
+}

external/llvm-project/lldb/unittests/Interpreter/TestCompletion.cpp

@@ -0,0 +1,306 @@
+//===-- TestCompletion.cpp --------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+#include "lldb/Interpreter/CommandCompletions.h"
+#include "lldb/Utility/StringList.h"
+#include "lldb/Utility/TildeExpressionResolver.h"
+
+#include "TestingSupport/MockTildeExpressionResolver.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+
+namespace fs = llvm::sys::fs;
+namespace path = llvm::sys::path;
+using namespace llvm;
+using namespace lldb_private;
+
+#define ASSERT_NO_ERROR(x)                                                     \
+  if (std::error_code ASSERT_NO_ERROR_ec = x) {                                \
+    SmallString<128> MessageStorage;                                           \
+    raw_svector_ostream Message(MessageStorage);                               \
+    Message << #x ": did not return errc::success.\n"                          \
+            << "error number: " << ASSERT_NO_ERROR_ec.value() << "\n"          \
+            << "error message: " << ASSERT_NO_ERROR_ec.message() << "\n";      \
+    GTEST_FATAL_FAILURE_(MessageStorage.c_str());                              \
+  } else {                                                                     \
+  }
+
+namespace {
+
+class CompletionTest : public testing::Test {
+protected:
+  /// Unique temporary directory in which all created filesystem entities must
+  /// be placed. It is removed at the end of the test suite.
+  static SmallString<128> BaseDir;
+
+  static SmallString<128> OriginalWorkingDir;
+
+  static SmallString<128> DirFoo;
+  static SmallString<128> DirFooA;
+  static SmallString<128> DirFooB;
+  static SmallString<128> DirFooC;
+  static SmallString<128> DirBar;
+  static SmallString<128> DirBaz;
+  static SmallString<128> DirTestFolder;
+
+  static SmallString<128> FileAA;
+  static SmallString<128> FileAB;
+  static SmallString<128> FileAC;
+  static SmallString<128> FileFoo;
+  static SmallString<128> FileBar;
+  static SmallString<128> FileBaz;
+
+  void SetUp() override { llvm::sys::fs::set_current_path(OriginalWorkingDir); }
+
+  static void SetUpTestCase() {
+    llvm::sys::fs::current_path(OriginalWorkingDir);
+
+    ASSERT_NO_ERROR(fs::createUniqueDirectory("FsCompletion", BaseDir));
+    const char *DirNames[] = {"foo", "fooa", "foob",       "fooc",
+                              "bar", "baz",  "test_folder"};
+    const char *FileNames[] = {"aa1234.tmp",  "ab1234.tmp",  "ac1234.tmp",
+                               "foo1234.tmp", "bar1234.tmp", "baz1234.tmp"};
+    SmallString<128> *Dirs[] = {&DirFoo, &DirFooA, &DirFooB,      &DirFooC,
+                                &DirBar, &DirBaz,  &DirTestFolder};
+    for (auto Dir : llvm::zip(DirNames, Dirs)) {
+      auto &Path = *std::get<1>(Dir);
+      Path = BaseDir;
+      path::append(Path, std::get<0>(Dir));
+      ASSERT_NO_ERROR(fs::create_directory(Path));
+    }
+
+    SmallString<128> *Files[] = {&FileAA,  &FileAB,  &FileAC,
+                                 &FileFoo, &FileBar, &FileBaz};
+    for (auto File : llvm::zip(FileNames, Files)) {
+      auto &Path = *std::get<1>(File);
+      Path = BaseDir;
+      path::append(Path, std::get<0>(File));
+      int FD;
+      ASSERT_NO_ERROR(fs::createUniqueFile(Path, FD, Path));
+      ::close(FD);
+    }
+  }
+
+  static void TearDownTestCase() {
+    ASSERT_NO_ERROR(fs::remove_directories(BaseDir));
+  }
+
+  static bool HasEquivalentFile(const Twine &Path, const StringList &Paths) {
+    for (size_t I = 0; I < Paths.GetSize(); ++I) {
+      if (fs::equivalent(Path, Paths[I]))
+        return true;
+    }
+    return false;
+  }
+
+  static bool ContainsExactString(const Twine &Str, const StringList &Paths) {
+    SmallString<16> Storage;
+    StringRef Rendered = Str.toStringRef(Storage);
+    for (size_t I = 0; I < Paths.GetSize(); ++I) {
+      if (Paths[I] == Rendered)
+        return true;
+    }
+    return false;
+  }
+
+  void DoDirCompletions(const Twine &Prefix,
+                        StandardTildeExpressionResolver &Resolver,
+                        StringList &Results) {
+    // When a partial name matches, it returns all matches.  If it matches both
+    // a full name AND some partial names, it returns all of them.
+    uint32_t Count =
+        CommandCompletions::DiskDirectories(Prefix + "foo", Results, Resolver);
+    ASSERT_EQ(4u, Count);
+    ASSERT_EQ(Count, Results.GetSize());
+    EXPECT_TRUE(HasEquivalentFile(DirFoo, Results));
+    EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+    EXPECT_TRUE(HasEquivalentFile(DirFooB, Results));
+    EXPECT_TRUE(HasEquivalentFile(DirFooC, Results));
+
+    // If it matches only partial names, it still works as expected.
+    Count = CommandCompletions::DiskDirectories(Twine(Prefix) + "b", Results,
+                                                Resolver);
+    ASSERT_EQ(2u, Count);
+    ASSERT_EQ(Count, Results.GetSize());
+    EXPECT_TRUE(HasEquivalentFile(DirBar, Results));
+    EXPECT_TRUE(HasEquivalentFile(DirBaz, Results));
+  }
+};
+
+SmallString<128> CompletionTest::BaseDir;
+SmallString<128> CompletionTest::OriginalWorkingDir;
+
+SmallString<128> CompletionTest::DirFoo;
+SmallString<128> CompletionTest::DirFooA;
+SmallString<128> CompletionTest::DirFooB;
+SmallString<128> CompletionTest::DirFooC;
+SmallString<128> CompletionTest::DirBar;
+SmallString<128> CompletionTest::DirBaz;
+SmallString<128> CompletionTest::DirTestFolder;
+
+SmallString<128> CompletionTest::FileAA;
+SmallString<128> CompletionTest::FileAB;
+SmallString<128> CompletionTest::FileAC;
+SmallString<128> CompletionTest::FileFoo;
+SmallString<128> CompletionTest::FileBar;
+SmallString<128> CompletionTest::FileBaz;
+}
+
+TEST_F(CompletionTest, DirCompletionAbsolute) {
+  // All calls to DiskDirectories() return only directories, even when
+  // there are files which also match.  The tests below all check this
+  // by asserting an exact result count, and verifying against known
+  // folders.
+
+  std::string Prefixes[] = {(Twine(BaseDir) + "/").str(), ""};
+
+  StandardTildeExpressionResolver Resolver;
+  StringList Results;
+
+  // When a directory is specified that doesn't end in a slash, it searches
+  // for that directory, not items under it.
+  size_t Count =
+      CommandCompletions::DiskDirectories(BaseDir, Results, Resolver);
+  ASSERT_EQ(1u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(BaseDir, Results));
+
+  // When the same directory ends with a slash, it finds all children.
+  Count = CommandCompletions::DiskDirectories(Prefixes[0], Results, Resolver);
+  ASSERT_EQ(7u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFoo, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooB, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooC, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirBar, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirBaz, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirTestFolder, Results));
+
+  DoDirCompletions(Twine(BaseDir) + "/", Resolver, Results);
+  llvm::sys::fs::set_current_path(BaseDir);
+  DoDirCompletions("", Resolver, Results);
+}
+
+TEST_F(CompletionTest, FileCompletionAbsolute) {
+  // All calls to DiskFiles() return both files and directories  The tests below
+  // all check this by asserting an exact result count, and verifying against
+  // known folders.
+
+  StandardTildeExpressionResolver Resolver;
+  StringList Results;
+  // When an item is specified that doesn't end in a slash but exactly matches
+  // one item, it returns that item.
+  size_t Count = CommandCompletions::DiskFiles(Twine(BaseDir) + "/fooa",
+                                               Results, Resolver);
+  ASSERT_EQ(1u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+
+  // The previous check verified a directory match.  But it should work for
+  // files too.
+  Count =
+      CommandCompletions::DiskFiles(Twine(BaseDir) + "/aa", Results, Resolver);
+  ASSERT_EQ(1u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(FileAA, Results));
+
+  // When it ends with a slash, it should find all files and directories.
+  Count =
+      CommandCompletions::DiskFiles(Twine(BaseDir) + "/", Results, Resolver);
+  ASSERT_EQ(13u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFoo, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooB, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooC, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirBar, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirBaz, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirTestFolder, Results));
+
+  EXPECT_TRUE(HasEquivalentFile(FileAA, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileAB, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileAC, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileFoo, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileBar, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileBaz, Results));
+
+  // When a partial name matches, it returns all file & directory matches.
+  Count =
+      CommandCompletions::DiskFiles(Twine(BaseDir) + "/foo", Results, Resolver);
+  ASSERT_EQ(5u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFoo, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooB, Results));
+  EXPECT_TRUE(HasEquivalentFile(DirFooC, Results));
+  EXPECT_TRUE(HasEquivalentFile(FileFoo, Results));
+}
+
+TEST_F(CompletionTest, DirCompletionUsername) {
+  MockTildeExpressionResolver Resolver("James", BaseDir);
+  Resolver.AddKnownUser("Kirk", DirFooB);
+  Resolver.AddKnownUser("Lars", DirFooC);
+  Resolver.AddKnownUser("Jason", DirFoo);
+  Resolver.AddKnownUser("Larry", DirFooA);
+
+  // Just resolving current user's home directory by itself should return the
+  // directory.
+  StringList Results;
+  size_t Count = CommandCompletions::DiskDirectories("~", Results, Resolver);
+  ASSERT_EQ(1u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(ContainsExactString(Twine("~") + path::get_separator(), Results));
+
+  // With a slash appended, it should return all items in the directory.
+  Count = CommandCompletions::DiskDirectories("~/", Results, Resolver);
+  ASSERT_EQ(7u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/foo") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/fooa") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/foob") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/fooc") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/bar") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~/baz") + path::get_separator(), Results));
+  EXPECT_TRUE(ContainsExactString(
+      Twine("~/test_folder") + path::get_separator(), Results));
+
+  // With ~username syntax it should return one match if there is an exact
+  // match.
+  // It shouldn't translate to the actual directory, it should keep the form the
+  // user typed.
+  Count = CommandCompletions::DiskDirectories("~Lars", Results, Resolver);
+  ASSERT_EQ(1u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~Lars") + path::get_separator(), Results));
+
+  // But with a username that is not found, no results are returned.
+  Count = CommandCompletions::DiskDirectories("~Dave", Results, Resolver);
+  ASSERT_EQ(0u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+
+  // And if there are multiple matches, it should return all of them.
+  Count = CommandCompletions::DiskDirectories("~La", Results, Resolver);
+  ASSERT_EQ(2u, Count);
+  ASSERT_EQ(Count, Results.GetSize());
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~Lars") + path::get_separator(), Results));
+  EXPECT_TRUE(
+      ContainsExactString(Twine("~Larry") + path::get_separator(), Results));
+}