1 files changed, 139 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/unittests/Utility/ConstStringTest.cpp b/gnu/llvm/lldb/unittests/Utility/ConstStringTest.cpp
new file mode 100644
index 00000000000..74753b90317
--- /dev/null
+++ b/gnu/llvm/lldb/unittests/Utility/ConstStringTest.cpp
@@ -0,0 +1,139 @@
+//===-- ConstStringTest.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/Utility/ConstString.h"
+#include "llvm/Support/FormatVariadic.h"
+#include "gtest/gtest.h"
+
+using namespace lldb_private;
+
+TEST(ConstStringTest, format_provider) {
+  EXPECT_EQ("foo", llvm::formatv("{0}", ConstString("foo")).str());
+}
+
+TEST(ConstStringTest, MangledCounterpart) {
+  ConstString uvw("uvw");
+  ConstString counterpart;
+  EXPECT_FALSE(uvw.GetMangledCounterpart(counterpart));
+  EXPECT_EQ("", counterpart.GetStringRef());
+
+  ConstString xyz;
+  xyz.SetStringWithMangledCounterpart("xyz", uvw);
+  EXPECT_EQ("xyz", xyz.GetStringRef());
+
+  EXPECT_TRUE(xyz.GetMangledCounterpart(counterpart));
+  EXPECT_EQ("uvw", counterpart.GetStringRef());
+
+  EXPECT_TRUE(uvw.GetMangledCounterpart(counterpart));
+  EXPECT_EQ("xyz", counterpart.GetStringRef());
+}
+
+TEST(ConstStringTest, UpdateMangledCounterpart) {
+  { // Add counterpart
+    ConstString some1;
+    some1.SetStringWithMangledCounterpart("some", ConstString(""));
+  }
+  { // Overwrite empty string
+    ConstString some2;
+    some2.SetStringWithMangledCounterpart("some", ConstString("one"));
+  }
+  { // Overwrite with identical value
+    ConstString some2;
+    some2.SetStringWithMangledCounterpart("some", ConstString("one"));
+  }
+  { // Check counterpart is set
+    ConstString counterpart;
+    EXPECT_TRUE(ConstString("some").GetMangledCounterpart(counterpart));
+    EXPECT_EQ("one", counterpart.GetStringRef());
+  }
+}
+
+TEST(ConstStringTest, FromMidOfBufferStringRef) {
+  // StringRef's into bigger buffer: no null termination
+  const char *buffer = "abcdefghi";
+  llvm::StringRef foo_ref(buffer, 3);
+  llvm::StringRef bar_ref(buffer + 3, 3);
+
+  ConstString foo(foo_ref);
+
+  ConstString bar;
+  bar.SetStringWithMangledCounterpart(bar_ref, foo);
+  EXPECT_EQ("def", bar.GetStringRef());
+
+  ConstString counterpart;
+  EXPECT_TRUE(bar.GetMangledCounterpart(counterpart));
+  EXPECT_EQ("abc", counterpart.GetStringRef());
+
+  EXPECT_TRUE(foo.GetMangledCounterpart(counterpart));
+  EXPECT_EQ("def", counterpart.GetStringRef());
+}
+
+TEST(ConstStringTest, NullAndEmptyStates) {
+  ConstString foo("foo");
+  EXPECT_FALSE(!foo);
+  EXPECT_FALSE(foo.IsEmpty());
+  EXPECT_FALSE(foo.IsNull());
+
+  ConstString empty("");
+  EXPECT_TRUE(!empty);
+  EXPECT_TRUE(empty.IsEmpty());
+  EXPECT_FALSE(empty.IsNull());
+
+  ConstString null;
+  EXPECT_TRUE(!null);
+  EXPECT_TRUE(null.IsEmpty());
+  EXPECT_TRUE(null.IsNull());
+}
+
+TEST(ConstStringTest, CompareConstString) {
+  ConstString foo("foo");
+  ConstString foo2("foo");
+  ConstString bar("bar");
+
+  EXPECT_TRUE(foo == foo2);
+  EXPECT_TRUE(foo2 == foo);
+  EXPECT_TRUE(foo == ConstString("foo"));
+
+  EXPECT_FALSE(foo == bar);
+  EXPECT_FALSE(foo2 == bar);
+  EXPECT_FALSE(foo == ConstString("bar"));
+  EXPECT_FALSE(foo == ConstString("different"));
+  EXPECT_FALSE(foo == ConstString(""));
+  EXPECT_FALSE(foo == ConstString());
+
+  ConstString empty("");
+  EXPECT_FALSE(empty == ConstString("bar"));
+  EXPECT_FALSE(empty == ConstString());
+  EXPECT_TRUE(empty == ConstString(""));
+
+  ConstString null;
+  EXPECT_FALSE(null == ConstString("bar"));
+  EXPECT_TRUE(null == ConstString());
+  EXPECT_FALSE(null == ConstString(""));
+}
+
+TEST(ConstStringTest, CompareStringRef) {
+  ConstString foo("foo");
+
+  EXPECT_TRUE(foo == "foo");
+  EXPECT_TRUE(foo != "");
+  EXPECT_FALSE(foo == static_cast<const char *>(nullptr));
+  EXPECT_TRUE(foo != "bar");
+
+  ConstString empty("");
+  EXPECT_FALSE(empty == "foo");
+  EXPECT_FALSE(empty != "");
+  EXPECT_FALSE(empty == static_cast<const char *>(nullptr));
+  EXPECT_TRUE(empty != "bar");
+
+  ConstString null;
+  EXPECT_FALSE(null == "foo");
+  EXPECT_TRUE(null != "");
+  EXPECT_TRUE(null == static_cast<const char *>(nullptr));
+  EXPECT_TRUE(null != "bar");
+}