Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 272 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/unittests/Interpreter/TestCompletion.cpp b/gnu/llvm/lldb/unittests/Interpreter/TestCompletion.cpp
new file mode 100644
index 00000000000..838a7a9e54d
--- /dev/null
+++ b/gnu/llvm/lldb/unittests/Interpreter/TestCompletion.cpp
@@ -0,0 +1,272 @@
+//===-- TestCompletion.cpp --------------------------------------*- C++ -*-===//
+//
+// 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 "lldb/Host/FileSystem.h"
+#include "lldb/Interpreter/CommandCompletions.h"
+#include "lldb/Utility/StringList.h"
+#include "lldb/Utility/TildeExpressionResolver.h"
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+#include "TestingSupport/MockTildeExpressionResolver.h"
+#include "TestingSupport/SubsystemRAII.h"
+#include "TestingSupport/TestUtilities.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;
+
+namespace {
+
+class CompletionTest : public testing::Test {
+  SubsystemRAII<FileSystem> subsystems;
+
+protected:
+  /// Unique temporary directory in which all created filesystem entities must
+  /// be placed. It is removed at the end of the test suite.
+  SmallString<128> BaseDir;
+
+  /// The working directory that we got when starting the test. Every test
+  /// should chdir into this directory first because some tests maybe chdir
+  /// into another one during their run.
+  static SmallString<128> OriginalWorkingDir;
+
+  SmallString<128> DirFoo;
+  SmallString<128> DirFooA;
+  SmallString<128> DirFooB;
+  SmallString<128> DirFooC;
+  SmallString<128> DirBar;
+  SmallString<128> DirBaz;
+  SmallString<128> DirTestFolder;
+  SmallString<128> DirNested;
+
+  SmallString<128> FileAA;
+  SmallString<128> FileAB;
+  SmallString<128> FileAC;
+  SmallString<128> FileFoo;
+  SmallString<128> FileBar;
+  SmallString<128> FileBaz;
+
+  void SetUp() override {
+    // chdir back into the original working dir this test binary started with.
+    // A previous test may have have changed the working dir.
+    ASSERT_NO_ERROR(fs::set_current_path(OriginalWorkingDir));
+
+    // Get the name of the current test. To prevent that by chance two tests
+    // get the same temporary directory if createUniqueDirectory fails.
+    auto test_info = ::testing::UnitTest::GetInstance()->current_test_info();
+    ASSERT_TRUE(test_info != nullptr);
+    std::string name = test_info->name();
+    ASSERT_NO_ERROR(fs::createUniqueDirectory("FsCompletion-" + name, BaseDir));
+
+    const char *DirNames[] = {"foo", "fooa", "foob",        "fooc",
+                              "bar", "baz",  "test_folder", "foo/nested"};
+    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, &DirNested};
+    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_directories(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 SetUpTestCase() {
+    ASSERT_NO_ERROR(fs::current_path(OriginalWorkingDir));
+  }
+
+  void TearDown() override {
+    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;
+  }
+
+  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.
+    CommandCompletions::DiskDirectories(Prefix + "foo", Results, Resolver);
+    ASSERT_EQ(4u, 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.
+    CommandCompletions::DiskDirectories(Twine(Prefix) + "b", Results, Resolver);
+    ASSERT_EQ(2u, Results.GetSize());
+    EXPECT_TRUE(HasEquivalentFile(DirBar, Results));
+    EXPECT_TRUE(HasEquivalentFile(DirBaz, Results));
+  }
+};
+
+SmallString<128> CompletionTest::OriginalWorkingDir;
+} // namespace
+
+static std::vector<std::string> toVector(const StringList &SL) {
+  std::vector<std::string> Result;
+  for (size_t Idx = 0; Idx < SL.GetSize(); ++Idx)
+    Result.push_back(SL[Idx]);
+  return Result;
+}
+using testing::UnorderedElementsAre;
+
+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.
+  // Sanity check that the path we complete on exists and isn't too long.
+  CommandCompletions::DiskDirectories(Twine(BaseDir) + "/fooa", Results,
+                                      Resolver);
+  ASSERT_EQ(1u, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+
+  CommandCompletions::DiskDirectories(Twine(BaseDir) + "/.", Results, Resolver);
+  ASSERT_EQ(0u, Results.GetSize());
+
+  // When the same directory ends with a slash, it finds all children.
+  CommandCompletions::DiskDirectories(Prefixes[0], Results, Resolver);
+  ASSERT_EQ(7u, 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.
+  CommandCompletions::DiskFiles(Twine(BaseDir) + "/fooa", Results, Resolver);
+  ASSERT_EQ(1u, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(DirFooA, Results));
+
+  // The previous check verified a directory match.  But it should work for
+  // files too.
+  CommandCompletions::DiskFiles(Twine(BaseDir) + "/aa", Results, Resolver);
+  ASSERT_EQ(1u, Results.GetSize());
+  EXPECT_TRUE(HasEquivalentFile(FileAA, Results));
+
+  // When it ends with a slash, it should find all files and directories.
+  CommandCompletions::DiskFiles(Twine(BaseDir) + "/", Results, Resolver);
+  ASSERT_EQ(13u, 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.
+  CommandCompletions::DiskFiles(Twine(BaseDir) + "/foo", Results, Resolver);
+  ASSERT_EQ(5u, 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);
+  std::string sep = path::get_separator();
+
+  // Just resolving current user's home directory by itself should return the
+  // directory.
+  StringList Results;
+  CommandCompletions::DiskDirectories("~", Results, Resolver);
+  EXPECT_THAT(toVector(Results), UnorderedElementsAre("~" + sep));
+
+  // With a slash appended, it should return all items in the directory.
+  CommandCompletions::DiskDirectories("~/", Results, Resolver);
+  EXPECT_THAT(toVector(Results),
+              UnorderedElementsAre(
+                  "~/foo" + sep, "~/fooa" + sep, "~/foob" + sep, "~/fooc" + sep,
+                  "~/bar" + sep, "~/baz" + sep, "~/test_folder" + sep));
+
+  // Check that we can complete directories in nested paths
+  CommandCompletions::DiskDirectories("~/foo/", Results, Resolver);
+  EXPECT_THAT(toVector(Results), UnorderedElementsAre("~/foo/nested" + sep));
+
+  CommandCompletions::DiskDirectories("~/foo/nes", Results, Resolver);
+  EXPECT_THAT(toVector(Results), UnorderedElementsAre("~/foo/nested" + sep));
+
+  // 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.
+  CommandCompletions::DiskDirectories("~Lars", Results, Resolver);
+  EXPECT_THAT(toVector(Results), UnorderedElementsAre("~Lars" + sep));
+
+  // But with a username that is not found, no results are returned.
+  CommandCompletions::DiskDirectories("~Dave", Results, Resolver);
+  EXPECT_THAT(toVector(Results), UnorderedElementsAre());
+
+  // And if there are multiple matches, it should return all of them.
+  CommandCompletions::DiskDirectories("~La", Results, Resolver);
+  EXPECT_THAT(toVector(Results),
+              UnorderedElementsAre("~Lars" + sep, "~Larry" + sep));
+}