1//===-- ConstStringTest.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 "lldb/Utility/ConstString.h"
10#include "llvm/Support/FormatVariadic.h"
11#include "gtest/gtest.h"
12
13using namespace lldb_private;
14
15TEST(ConstStringTest, format_provider) {
16 EXPECT_EQ("foo", llvm::formatv("{0}", ConstString("foo")).str());
17}
18
19TEST(ConstStringTest, MangledCounterpart) {
20 ConstString uvw("uvw");
21 ConstString counterpart;
22 EXPECT_FALSE(uvw.GetMangledCounterpart(counterpart));
23 EXPECT_EQ("", counterpart.GetStringRef());
24
25 ConstString xyz;
26 xyz.SetStringWithMangledCounterpart(demangled: "xyz", mangled: uvw);
27 EXPECT_EQ("xyz", xyz.GetStringRef());
28
29 EXPECT_TRUE(xyz.GetMangledCounterpart(counterpart));
30 EXPECT_EQ("uvw", counterpart.GetStringRef());
31
32 EXPECT_TRUE(uvw.GetMangledCounterpart(counterpart));
33 EXPECT_EQ("xyz", counterpart.GetStringRef());
34}
35
36TEST(ConstStringTest, UpdateMangledCounterpart) {
37 { // Add counterpart
38 ConstString some1;
39 some1.SetStringWithMangledCounterpart(demangled: "some", mangled: ConstString(""));
40 }
41 { // Overwrite empty string
42 ConstString some2;
43 some2.SetStringWithMangledCounterpart(demangled: "some", mangled: ConstString("one"));
44 }
45 { // Overwrite with identical value
46 ConstString some2;
47 some2.SetStringWithMangledCounterpart(demangled: "some", mangled: ConstString("one"));
48 }
49 { // Check counterpart is set
50 ConstString counterpart;
51 EXPECT_TRUE(ConstString("some").GetMangledCounterpart(counterpart));
52 EXPECT_EQ("one", counterpart.GetStringRef());
53 }
54}
55
56TEST(ConstStringTest, FromMidOfBufferStringRef) {
57 // StringRef's into bigger buffer: no null termination
58 const char *buffer = "abcdefghi";
59 llvm::StringRef foo_ref(buffer, 3);
60 llvm::StringRef bar_ref(buffer + 3, 3);
61
62 ConstString foo(foo_ref);
63
64 ConstString bar;
65 bar.SetStringWithMangledCounterpart(demangled: bar_ref, mangled: foo);
66 EXPECT_EQ("def", bar.GetStringRef());
67
68 ConstString counterpart;
69 EXPECT_TRUE(bar.GetMangledCounterpart(counterpart));
70 EXPECT_EQ("abc", counterpart.GetStringRef());
71
72 EXPECT_TRUE(foo.GetMangledCounterpart(counterpart));
73 EXPECT_EQ("def", counterpart.GetStringRef());
74}
75
76TEST(ConstStringTest, NullAndEmptyStates) {
77 ConstString foo("foo");
78 EXPECT_FALSE(!foo);
79 EXPECT_FALSE(foo.IsEmpty());
80 EXPECT_FALSE(foo.IsNull());
81
82 ConstString empty("");
83 EXPECT_TRUE(!empty);
84 EXPECT_TRUE(empty.IsEmpty());
85 EXPECT_FALSE(empty.IsNull());
86
87 ConstString null;
88 EXPECT_TRUE(!null);
89 EXPECT_TRUE(null.IsEmpty());
90 EXPECT_TRUE(null.IsNull());
91 EXPECT_TRUE(null.GetString().empty());
92}
93
94TEST(ConstStringTest, CompareConstString) {
95 ConstString foo("foo");
96 ConstString foo2("foo");
97 ConstString bar("bar");
98
99 EXPECT_TRUE(foo == foo2);
100 EXPECT_TRUE(foo2 == foo);
101 EXPECT_TRUE(foo == ConstString("foo"));
102
103 EXPECT_FALSE(foo == bar);
104 EXPECT_FALSE(foo2 == bar);
105 EXPECT_FALSE(foo == ConstString("bar"));
106 EXPECT_FALSE(foo == ConstString("different"));
107 EXPECT_FALSE(foo == ConstString(""));
108 EXPECT_FALSE(foo == ConstString());
109
110 ConstString empty("");
111 EXPECT_FALSE(empty == ConstString("bar"));
112 EXPECT_FALSE(empty == ConstString());
113 EXPECT_TRUE(empty == ConstString(""));
114
115 ConstString null;
116 EXPECT_FALSE(null == ConstString("bar"));
117 EXPECT_TRUE(null == ConstString());
118 EXPECT_FALSE(null == ConstString(""));
119}
120
121TEST(ConstStringTest, CompareStringRef) {
122 ConstString foo("foo");
123
124 EXPECT_TRUE(foo == "foo");
125 EXPECT_TRUE(foo != "");
126 EXPECT_FALSE(foo == static_cast<const char *>(nullptr));
127 EXPECT_TRUE(foo != "bar");
128
129 ConstString empty("");
130 EXPECT_FALSE(empty == "foo");
131 EXPECT_FALSE(empty != "");
132 EXPECT_FALSE(empty == static_cast<const char *>(nullptr));
133 EXPECT_TRUE(empty != "bar");
134
135 ConstString null;
136 EXPECT_FALSE(null == "foo");
137 EXPECT_TRUE(null != "");
138 EXPECT_TRUE(null == static_cast<const char *>(nullptr));
139 EXPECT_TRUE(null != "bar");
140}
141
142TEST(ConstStringTest, StringConversions) {
143 ConstString foo("foo");
144
145 // Member functions.
146 EXPECT_EQ(llvm::StringRef("foo"), foo.GetStringRef());
147 EXPECT_EQ(std::string("foo"), foo.GetString());
148 EXPECT_STREQ("foo", foo.AsCString());
149
150 // Conversion operators.
151 EXPECT_EQ(llvm::StringRef("foo"), llvm::StringRef(foo));
152 EXPECT_EQ(std::string("foo"), std::string_view(foo));
153 EXPECT_EQ(std::string("foo"), std::string(foo));
154}
155

source code of lldb/unittests/Utility/ConstStringTest.cpp