/3rd_party/llvm/unittests/ADT/TwineTest.cpp
https://code.google.com/p/softart/ · C++ · 87 lines · 56 code · 15 blank · 16 comment · 0 complexity · 840f17c066dd8c04fb71b954b33f2504 MD5 · raw file
- //===- TwineTest.cpp - Twine unit tests -----------------------------------===//
- //
- // The LLVM Compiler Infrastructure
- //
- // This file is distributed under the University of Illinois Open Source
- // License. See LICENSE.TXT for details.
- //
- //===----------------------------------------------------------------------===//
- #include "llvm/ADT/Twine.h"
- #include "llvm/ADT/SmallString.h"
- #include "llvm/Support/raw_ostream.h"
- #include "gtest/gtest.h"
- using namespace llvm;
- namespace {
- std::string repr(const Twine &Value) {
- std::string res;
- llvm::raw_string_ostream OS(res);
- Value.printRepr(OS);
- return OS.str();
- }
- TEST(TwineTest, Construction) {
- EXPECT_EQ("", Twine().str());
- EXPECT_EQ("hi", Twine("hi").str());
- EXPECT_EQ("hi", Twine(std::string("hi")).str());
- EXPECT_EQ("hi", Twine(StringRef("hi")).str());
- EXPECT_EQ("hi", Twine(StringRef(std::string("hi"))).str());
- EXPECT_EQ("hi", Twine(StringRef("hithere", 2)).str());
- }
- TEST(TwineTest, Numbers) {
- EXPECT_EQ("123", Twine(123U).str());
- EXPECT_EQ("123", Twine(123).str());
- EXPECT_EQ("-123", Twine(-123).str());
- EXPECT_EQ("123", Twine(123).str());
- EXPECT_EQ("-123", Twine(-123).str());
- EXPECT_EQ("7b", Twine::utohexstr(123).str());
- }
- TEST(TwineTest, Characters) {
- EXPECT_EQ("x", Twine('x').str());
- EXPECT_EQ("x", Twine(static_cast<unsigned char>('x')).str());
- EXPECT_EQ("x", Twine(static_cast<signed char>('x')).str());
- }
- TEST(TwineTest, Concat) {
- // Check verse repr, since we care about the actual representation not just
- // the result.
- // Concat with null.
- EXPECT_EQ("(Twine null empty)",
- repr(Twine("hi").concat(Twine::createNull())));
- EXPECT_EQ("(Twine null empty)",
- repr(Twine::createNull().concat(Twine("hi"))));
-
- // Concat with empty.
- EXPECT_EQ("(Twine cstring:\"hi\" empty)",
- repr(Twine("hi").concat(Twine())));
- EXPECT_EQ("(Twine cstring:\"hi\" empty)",
- repr(Twine().concat(Twine("hi"))));
- // Concatenation of unary ropes.
- EXPECT_EQ("(Twine cstring:\"a\" cstring:\"b\")",
- repr(Twine("a").concat(Twine("b"))));
- // Concatenation of other ropes.
- EXPECT_EQ("(Twine rope:(Twine cstring:\"a\" cstring:\"b\") cstring:\"c\")",
- repr(Twine("a").concat(Twine("b")).concat(Twine("c"))));
- EXPECT_EQ("(Twine cstring:\"a\" rope:(Twine cstring:\"b\" cstring:\"c\"))",
- repr(Twine("a").concat(Twine("b").concat(Twine("c")))));
- }
- TEST(TwineTest, toNullTerminatedStringRef) {
- SmallString<8> storage;
- EXPECT_EQ(0, *Twine("hello").toNullTerminatedStringRef(storage).end());
- EXPECT_EQ(0,
- *Twine(StringRef("hello")).toNullTerminatedStringRef(storage).end());
- }
- // I suppose linking in the entire code generator to add a unit test to check
- // the code size of the concat operation is overkill... :)
- } // end anonymous namespace