1 //===- StringExtrasTest.cpp - Unit tests for String extras ----------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/ADT/StringExtras.h"
11 #include "gtest/gtest.h"
12 
13 using namespace llvm;
14 
15 TEST(StringExtrasTest, Join) {
16   std::vector<std::string> Items;
17   EXPECT_EQ("", join(Items.begin(), Items.end(), " <sep> "));
18 
19   Items = {"foo"};
20   EXPECT_EQ("foo", join(Items.begin(), Items.end(), " <sep> "));
21 
22   Items = {"foo", "bar"};
23   EXPECT_EQ("foo <sep> bar", join(Items.begin(), Items.end(), " <sep> "));
24 
25   Items = {"foo", "bar", "baz"};
26   EXPECT_EQ("foo <sep> bar <sep> baz",
27             join(Items.begin(), Items.end(), " <sep> "));
28 }
29 
30 TEST(StringExtrasTest, JoinItems) {
31   const char *Foo = "foo";
32   std::string Bar = "bar";
33   llvm::StringRef Baz = "baz";
34   char X = 'x';
35 
36   EXPECT_EQ("", join_items(" <sep> "));
37   EXPECT_EQ("", join_items('/'));
38 
39   EXPECT_EQ("foo", join_items(" <sep> ", Foo));
40   EXPECT_EQ("foo", join_items('/', Foo));
41 
42   EXPECT_EQ("foo <sep> bar", join_items(" <sep> ", Foo, Bar));
43   EXPECT_EQ("foo/bar", join_items('/', Foo, Bar));
44 
45   EXPECT_EQ("foo <sep> bar <sep> baz", join_items(" <sep> ", Foo, Bar, Baz));
46   EXPECT_EQ("foo/bar/baz", join_items('/', Foo, Bar, Baz));
47 
48   EXPECT_EQ("foo <sep> bar <sep> baz <sep> x",
49             join_items(" <sep> ", Foo, Bar, Baz, X));
50 
51   EXPECT_EQ("foo/bar/baz/x", join_items('/', Foo, Bar, Baz, X));
52 }
53 
54 TEST(StringExtrasTest, ToAndFromHex) {
55   std::vector<uint8_t> OddBytes = {0x5, 0xBD, 0x0D, 0x3E, 0xCD};
56   std::string OddStr = "05BD0D3ECD";
57   StringRef OddData(reinterpret_cast<const char *>(OddBytes.data()),
58                     OddBytes.size());
59   EXPECT_EQ(OddStr, toHex(OddData));
60   EXPECT_EQ(OddData, fromHex(StringRef(OddStr).drop_front()));
61 
62   std::vector<uint8_t> EvenBytes = {0xA5, 0xBD, 0x0D, 0x3E, 0xCD};
63   std::string EvenStr = "A5BD0D3ECD";
64   StringRef EvenData(reinterpret_cast<const char *>(EvenBytes.data()),
65                      EvenBytes.size());
66   EXPECT_EQ(EvenStr, toHex(EvenData));
67   EXPECT_EQ(EvenData, fromHex(EvenStr));
68 }