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//===-- ConstStringTest.cpp -----------------------------------------------===//
//
// 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");
}
TEST(ConstStringTest, StringConversions) {
ConstString foo("foo");
// Member functions.
EXPECT_EQ(llvm::StringRef("foo"), foo.GetStringRef());
EXPECT_EQ(std::string("foo"), foo.GetString());
EXPECT_STREQ("foo", foo.AsCString());
// Conversion operators.
EXPECT_EQ(llvm::StringRef("foo"), llvm::StringRef(foo));
EXPECT_EQ(std::string("foo"), std::string_view(foo));
EXPECT_EQ(std::string("foo"), std::string(foo));
}
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