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llvm-project/llvm/unittests/Support/SpecialCaseListTest.cpp

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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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