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teak-llvm/llvm/unittests/Support/SpecialCaseListTest.cpp
Ilya Biryukov aa981c1802 Reland 9f3fdb0d7f: [Driver] Use VFS to check if sanitizer blacklists exist 
With updates to various LLVM tools that use SpecialCastList.

It was tempting to use RealFileSystem as the default, but that makes it
too easy to accidentally forget passing VFS in clang code.
2019-11-21 11:56:09 +01:00

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//===- SpecialCaseListTest.cpp - Unit tests for SpecialCaseList -----------===//
//
// 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 "llvm/Support/SpecialCaseList.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
class SpecialCaseListTest : public ::testing::Test {
protected:
std::unique_ptr<SpecialCaseList> makeSpecialCaseList(StringRef List,
std::string &Error) {
std::unique_ptr<MemoryBuffer> MB = MemoryBuffer::getMemBuffer(List);
return SpecialCaseList::create(MB.get(), Error);
}
std::unique_ptr<SpecialCaseList> makeSpecialCaseList(StringRef List) {
std::string Error;
auto SCL = makeSpecialCaseList(List, Error);
assert(SCL);
assert(Error == "");
return SCL;
}
std::string makeSpecialCaseListFile(StringRef Contents) {
int FD;
SmallString<64> Path;
sys::fs::createTemporaryFile("SpecialCaseListTest", "temp", FD, Path);
raw_fd_ostream OF(FD, true, true);
OF << Contents;
OF.close();
return Path.str();
}
};
TEST_F(SpecialCaseListTest, Basic) {
std::unique_ptr<SpecialCaseList> SCL =
makeSpecialCaseList("# This is a comment.\n"
"\n"
"src:hello\n"
"src:bye\n"
"src:hi=category\n"
"src:z*=category\n");
EXPECT_TRUE(SCL->inSection("", "src", "hello"));
EXPECT_TRUE(SCL->inSection("", "src", "bye"));
EXPECT_TRUE(SCL->inSection("", "src", "hi", "category"));
EXPECT_TRUE(SCL->inSection("", "src", "zzzz", "category"));
EXPECT_FALSE(SCL->inSection("", "src", "hi"));
EXPECT_FALSE(SCL->inSection("", "fun", "hello"));
EXPECT_FALSE(SCL->inSection("", "src", "hello", "category"));
EXPECT_EQ(3u, SCL->inSectionBlame("", "src", "hello"));
EXPECT_EQ(4u, SCL->inSectionBlame("", "src", "bye"));
EXPECT_EQ(5u, SCL->inSectionBlame("", "src", "hi", "category"));
EXPECT_EQ(6u, SCL->inSectionBlame("", "src", "zzzz", "category"));
EXPECT_EQ(0u, SCL->inSectionBlame("", "src", "hi"));
EXPECT_EQ(0u, SCL->inSectionBlame("", "fun", "hello"));
EXPECT_EQ(0u, SCL->inSectionBlame("", "src", "hello", "category"));
}
TEST_F(SpecialCaseListTest, CorrectErrorLineNumberWithBlankLine) {
std::string Error;
EXPECT_EQ(nullptr, makeSpecialCaseList("# This is a comment.\n"
"\n"
"[not valid\n",
Error));
EXPECT_TRUE(
((StringRef)Error).startswith("malformed section header on line 3:"));
EXPECT_EQ(nullptr, makeSpecialCaseList("\n\n\n"
"[not valid\n",
Error));
EXPECT_TRUE(
((StringRef)Error).startswith("malformed section header on line 4:"));
}
TEST_F(SpecialCaseListTest, SectionRegexErrorHandling) {
std::string Error;
EXPECT_EQ(makeSpecialCaseList("[address", Error), nullptr);
EXPECT_TRUE(((StringRef)Error).startswith("malformed section header "));
EXPECT_EQ(makeSpecialCaseList("[[]", Error), nullptr);
EXPECT_TRUE(((StringRef)Error).startswith("malformed regex for section [: "));
EXPECT_EQ(makeSpecialCaseList("src:=", Error), nullptr);
EXPECT_TRUE(((StringRef)Error).endswith("Supplied regexp was blank"));
}
TEST_F(SpecialCaseListTest, Section) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("src:global\n"
"[sect1|sect2]\n"
"src:test1\n"
"[sect3*]\n"
"src:test2\n");
EXPECT_TRUE(SCL->inSection("arbitrary", "src", "global"));
EXPECT_TRUE(SCL->inSection("", "src", "global"));
EXPECT_TRUE(SCL->inSection("sect1", "src", "test1"));
EXPECT_FALSE(SCL->inSection("sect1-arbitrary", "src", "test1"));
EXPECT_FALSE(SCL->inSection("sect", "src", "test1"));
EXPECT_FALSE(SCL->inSection("sect1", "src", "test2"));
EXPECT_TRUE(SCL->inSection("sect2", "src", "test1"));
EXPECT_TRUE(SCL->inSection("sect3", "src", "test2"));
EXPECT_TRUE(SCL->inSection("sect3-arbitrary", "src", "test2"));
EXPECT_FALSE(SCL->inSection("", "src", "test1"));
EXPECT_FALSE(SCL->inSection("", "src", "test2"));
}
TEST_F(SpecialCaseListTest, GlobalInit) {
std::unique_ptr<SpecialCaseList> SCL =
makeSpecialCaseList("global:foo=init\n");
EXPECT_FALSE(SCL->inSection("", "global", "foo"));
EXPECT_FALSE(SCL->inSection("", "global", "bar"));
EXPECT_TRUE(SCL->inSection("", "global", "foo", "init"));
EXPECT_FALSE(SCL->inSection("", "global", "bar", "init"));
SCL = makeSpecialCaseList("type:t2=init\n");
EXPECT_FALSE(SCL->inSection("", "type", "t1"));
EXPECT_FALSE(SCL->inSection("", "type", "t2"));
EXPECT_FALSE(SCL->inSection("", "type", "t1", "init"));
EXPECT_TRUE(SCL->inSection("", "type", "t2", "init"));
SCL = makeSpecialCaseList("src:hello=init\n");
EXPECT_FALSE(SCL->inSection("", "src", "hello"));
EXPECT_FALSE(SCL->inSection("", "src", "bye"));
EXPECT_TRUE(SCL->inSection("", "src", "hello", "init"));
EXPECT_FALSE(SCL->inSection("", "src", "bye", "init"));
}
TEST_F(SpecialCaseListTest, Substring) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("src:hello\n"
"fun:foo\n"
"global:bar\n");
EXPECT_FALSE(SCL->inSection("", "src", "othello"));
EXPECT_FALSE(SCL->inSection("", "fun", "tomfoolery"));
EXPECT_FALSE(SCL->inSection("", "global", "bartender"));
SCL = makeSpecialCaseList("fun:*foo*\n");
EXPECT_TRUE(SCL->inSection("", "fun", "tomfoolery"));
EXPECT_TRUE(SCL->inSection("", "fun", "foobar"));
}
TEST_F(SpecialCaseListTest, InvalidSpecialCaseList) {
std::string Error;
EXPECT_EQ(nullptr, makeSpecialCaseList("badline", Error));
EXPECT_EQ("malformed line 1: 'badline'", Error);
EXPECT_EQ(nullptr, makeSpecialCaseList("src:bad[a-", Error));
EXPECT_EQ("malformed regex in line 1: 'bad[a-': invalid character range",
Error);
EXPECT_EQ(nullptr, makeSpecialCaseList("src:a.c\n"
"fun:fun(a\n",
Error));
EXPECT_EQ("malformed regex in line 2: 'fun(a': parentheses not balanced",
Error);
std::vector<std::string> Files(1, "unexisting");
EXPECT_EQ(nullptr,
SpecialCaseList::create(Files, *vfs::getRealFileSystem(), Error));
EXPECT_EQ(0U, Error.find("can't open file 'unexisting':"));
}
TEST_F(SpecialCaseListTest, EmptySpecialCaseList) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("");
EXPECT_FALSE(SCL->inSection("", "foo", "bar"));
}
TEST_F(SpecialCaseListTest, MultipleBlacklists) {
std::vector<std::string> Files;
Files.push_back(makeSpecialCaseListFile("src:bar\n"
"src:*foo*\n"
"src:ban=init\n"));
Files.push_back(makeSpecialCaseListFile("src:baz\n"
"src:*fog*\n"));
auto SCL = SpecialCaseList::createOrDie(Files, *vfs::getRealFileSystem());
EXPECT_TRUE(SCL->inSection("", "src", "bar"));
EXPECT_TRUE(SCL->inSection("", "src", "baz"));
EXPECT_FALSE(SCL->inSection("", "src", "ban"));
EXPECT_TRUE(SCL->inSection("", "src", "ban", "init"));
EXPECT_TRUE(SCL->inSection("", "src", "tomfoolery"));
EXPECT_TRUE(SCL->inSection("", "src", "tomfoglery"));
for (auto &Path : Files)
sys::fs::remove(Path);
}
TEST_F(SpecialCaseListTest, NoTrigramsInRules) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:b.r\n"
"fun:za*az\n");
EXPECT_TRUE(SCL->inSection("", "fun", "bar"));
EXPECT_FALSE(SCL->inSection("", "fun", "baz"));
EXPECT_TRUE(SCL->inSection("", "fun", "zakaz"));
EXPECT_FALSE(SCL->inSection("", "fun", "zaraza"));
}
TEST_F(SpecialCaseListTest, NoTrigramsInARule) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:*bar*\n"
"fun:za*az\n");
EXPECT_TRUE(SCL->inSection("", "fun", "abara"));
EXPECT_FALSE(SCL->inSection("", "fun", "bor"));
EXPECT_TRUE(SCL->inSection("", "fun", "zakaz"));
EXPECT_FALSE(SCL->inSection("", "fun", "zaraza"));
}
TEST_F(SpecialCaseListTest, RepetitiveRule) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:*bar*bar*bar*bar*\n"
"fun:bar*\n");
EXPECT_TRUE(SCL->inSection("", "fun", "bara"));
EXPECT_FALSE(SCL->inSection("", "fun", "abara"));
EXPECT_TRUE(SCL->inSection("", "fun", "barbarbarbar"));
EXPECT_TRUE(SCL->inSection("", "fun", "abarbarbarbar"));
EXPECT_FALSE(SCL->inSection("", "fun", "abarbarbar"));
}
TEST_F(SpecialCaseListTest, SpecialSymbolRule) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("src:*c\\+\\+abi*\n");
EXPECT_TRUE(SCL->inSection("", "src", "c++abi"));
EXPECT_FALSE(SCL->inSection("", "src", "c\\+\\+abi"));
}
TEST_F(SpecialCaseListTest, PopularTrigram) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("fun:*aaaaaa*\n"
"fun:*aaaaa*\n"
"fun:*aaaa*\n"
"fun:*aaa*\n");
EXPECT_TRUE(SCL->inSection("", "fun", "aaa"));
EXPECT_TRUE(SCL->inSection("", "fun", "aaaa"));
EXPECT_TRUE(SCL->inSection("", "fun", "aaaabbbaaa"));
}
TEST_F(SpecialCaseListTest, EscapedSymbols) {
std::unique_ptr<SpecialCaseList> SCL = makeSpecialCaseList("src:*c\\+\\+abi*\n"
"src:*hello\\\\world*\n");
EXPECT_TRUE(SCL->inSection("", "src", "dir/c++abi"));
EXPECT_FALSE(SCL->inSection("", "src", "dir/c\\+\\+abi"));
EXPECT_FALSE(SCL->inSection("", "src", "c\\+\\+abi"));
EXPECT_TRUE(SCL->inSection("", "src", "C:\\hello\\world"));
EXPECT_TRUE(SCL->inSection("", "src", "hello\\world"));
EXPECT_FALSE(SCL->inSection("", "src", "hello\\\\world"));
}
}
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