sandboxed-api/sandboxed_api/tools/clang_generator/emitter_test.cc

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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "sandboxed_api/tools/clang_generator/emitter.h"
#include <initializer_list>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/memory/memory.h"
#include "absl/status/statusor.h"
#include "absl/strings/string_view.h"
#include "sandboxed_api/testing.h"
#include "sandboxed_api/tools/clang_generator/frontend_action_test_util.h"
#include "sandboxed_api/tools/clang_generator/generator.h"
#include "sandboxed_api/util/status_matchers.h"
namespace sapi {
namespace {
using ::testing::ElementsAre;
using ::testing::IsEmpty;
using ::testing::MatchesRegex;
using ::testing::SizeIs;
using ::testing::StrEq;
using ::testing::StrNe;
class EmitterForTesting : public Emitter {
public:
using Emitter::functions_;
using Emitter::rendered_types_;
};
class EmitterTest : public FrontendActionTest {};
TEST_F(EmitterTest, BasicFunctionality) {
GeneratorOptions options;
options.out_file = "input.h";
options.set_function_names<std::initializer_list<std::string>>(
{"ExposedFunction"});
EmitterForTesting emitter;
RunFrontendAction(R"(extern "C" void ExposedFunction() {})",
std::make_unique<GeneratorAction>(emitter, options));
EXPECT_THAT(emitter.functions_, SizeIs(1));
absl::StatusOr<std::string> header = emitter.EmitHeader(options);
EXPECT_THAT(header, IsOk());
}
TEST_F(EmitterTest, RelatedTypes) {
EmitterForTesting emitter;
RunFrontendAction(
R"(
namespace std {
using size_t = unsigned long;
} // namespace std
using std::size_t;
typedef enum { kRed, kGreen, kBlue } Color;
struct Channel {
Color color;
size_t width;
size_t height;
};
struct ByValue { int value; };
extern "C" void Colorize(Channel* chan, ByValue v) {}
typedef struct { int member; } MyStruct;
extern "C" void Structize(MyStruct* s);
)",
std::make_unique<GeneratorAction>(emitter, GeneratorOptions()));
// Types from "std" should be skipped
EXPECT_THAT(emitter.rendered_types_["std"], IsEmpty());
EXPECT_THAT(UglifyAll(emitter.rendered_types_[""]),
ElementsAre("typedef enum { kRed, kGreen, kBlue } Color",
"struct Channel {"
" Color color;"
" size_t width;"
" size_t height; }",
"struct ByValue { int value; }",
"typedef struct { int member; } MyStruct"));
}
TEST_F(EmitterTest, NestedStruct) {
EmitterForTesting emitter;
RunFrontendAction(
R"(
struct A {
struct B { int number; };
B b;
int data;
};
extern "C" void Structize(A* s);
)",
std::make_unique<GeneratorAction>(emitter, GeneratorOptions()));
EXPECT_THAT(UglifyAll(emitter.rendered_types_[""]),
ElementsAre("struct A {"
" struct B { int number; };"
" B b;"
" int data; }"));
}
TEST_F(EmitterTest, NestedAnonymousStruct) {
EmitterForTesting emitter;
RunFrontendAction(
R"(
struct A {
struct { int number; } b;
int data;
};
extern "C" void Structize(A* s);
)",
std::make_unique<GeneratorAction>(emitter, GeneratorOptions()));
EXPECT_THAT(UglifyAll(emitter.rendered_types_[""]),
ElementsAre("struct A {"
" struct { int number; } b;"
" int data; }"));
}
TEST_F(EmitterTest, ParentNotCollected) {
EmitterForTesting emitter;
RunFrontendAction(
R"(
struct A {
struct B { int number; };
B b;
int data;
};
extern "C" void Structize(A::B* s);
)",
std::make_unique<GeneratorAction>(emitter, GeneratorOptions()));
EXPECT_THAT(UglifyAll(emitter.rendered_types_[""]),
ElementsAre("struct A {"
" struct B { int number; };"
" B b;"
" int data; }"));
}
TEST_F(EmitterTest, RemoveQualifiers) {
EmitterForTesting emitter;
RunFrontendAction(
R"(
struct A { int data; };
extern "C" void Structize(const A* in, A* out);
)",
std::make_unique<GeneratorAction>(emitter, GeneratorOptions()));
EXPECT_THAT(UglifyAll(emitter.rendered_types_[""]),
ElementsAre("struct A { int data; }"));
}
TEST(IncludeGuard, CreatesRandomizedGuardForEmptyFilename) {
// Copybara will transform the string. This is intentional.
constexpr absl::string_view kGeneratedHeaderPrefix =
"SANDBOXED_API_GENERATED_HEADER_";
const std::string include_guard = GetIncludeGuard("");
EXPECT_THAT(include_guard, MatchesRegex(absl::StrCat(kGeneratedHeaderPrefix,
R"([0-9A-F]+_)")));
EXPECT_THAT(GetIncludeGuard(""), StrNe(include_guard));
}
TEST(IncludeGuard, BasicFunctionality) {
EXPECT_THAT(GetIncludeGuard("boost/graph/compressed_sparse_row_graph.hpp"),
StrEq("BOOST_GRAPH_COMPRESSED_SPARSE_ROW_GRAPH_HPP_"));
// "SAPI_" prefix is there to avoid generating guards starting with "_"
EXPECT_THAT(GetIncludeGuard("/usr/include/unistd.h"),
StrEq("SAPI_USR_INCLUDE_UNISTD_H_"));
}
TEST(IncludeGuard, AvoidReservedIdentifiers) {
EXPECT_THAT(GetIncludeGuard("9p.h"), StrEq("SAPI_9P_H_"));
EXPECT_THAT(GetIncludeGuard("double__under.h"), StrEq("DOUBLE_UNDER_H_"));
EXPECT_THAT(GetIncludeGuard("_single.h"), StrEq("SAPI_SINGLE_H_"));
EXPECT_THAT(GetIncludeGuard("__double.h"), StrEq("SAPI_DOUBLE_H_"));
}
} // namespace
} // namespace sapi