forked from OSchip/llvm-project
468 lines
14 KiB
C++
468 lines
14 KiB
C++
//===- unittests/libclang/LibclangTest.cpp --- libclang tests -------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang-c/Index.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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#include <fstream>
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#include <set>
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#define DEBUG_TYPE "libclang-test"
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TEST(libclang, clang_parseTranslationUnit2_InvalidArgs) {
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EXPECT_EQ(CXError_InvalidArguments,
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clang_parseTranslationUnit2(nullptr, nullptr, nullptr, 0, nullptr,
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0, 0, nullptr));
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}
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TEST(libclang, clang_createTranslationUnit_InvalidArgs) {
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EXPECT_EQ(nullptr, clang_createTranslationUnit(nullptr, nullptr));
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}
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TEST(libclang, clang_createTranslationUnit2_InvalidArgs) {
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EXPECT_EQ(CXError_InvalidArguments,
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clang_createTranslationUnit2(nullptr, nullptr, nullptr));
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CXTranslationUnit TU = reinterpret_cast<CXTranslationUnit>(1);
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EXPECT_EQ(CXError_InvalidArguments,
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clang_createTranslationUnit2(nullptr, nullptr, &TU));
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EXPECT_EQ(nullptr, TU);
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}
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namespace {
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struct TestVFO {
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const char *Contents;
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CXVirtualFileOverlay VFO;
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TestVFO(const char *Contents) : Contents(Contents) {
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VFO = clang_VirtualFileOverlay_create(0);
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}
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void map(const char *VPath, const char *RPath) {
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CXErrorCode Err = clang_VirtualFileOverlay_addFileMapping(VFO, VPath, RPath);
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EXPECT_EQ(Err, CXError_Success);
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}
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void mapError(const char *VPath, const char *RPath, CXErrorCode ExpErr) {
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CXErrorCode Err = clang_VirtualFileOverlay_addFileMapping(VFO, VPath, RPath);
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EXPECT_EQ(Err, ExpErr);
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}
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~TestVFO() {
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if (Contents) {
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char *BufPtr;
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unsigned BufSize;
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clang_VirtualFileOverlay_writeToBuffer(VFO, 0, &BufPtr, &BufSize);
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std::string BufStr(BufPtr, BufSize);
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EXPECT_STREQ(Contents, BufStr.c_str());
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free(BufPtr);
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}
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clang_VirtualFileOverlay_dispose(VFO);
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}
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};
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}
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TEST(libclang, VirtualFileOverlay_Basic) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/virtual\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo.h\",\n"
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" 'external-contents': \"/real/foo.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/virtual/foo.h", "/real/foo.h");
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}
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TEST(libclang, VirtualFileOverlay_Unicode) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/\\u266B\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"\\u2602.h\",\n"
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" 'external-contents': \"/real/\\u2602.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/♫/☂.h", "/real/☂.h");
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}
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TEST(libclang, VirtualFileOverlay_InvalidArgs) {
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TestVFO T(nullptr);
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T.mapError("/path/./virtual/../foo.h", "/real/foo.h",
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CXError_InvalidArguments);
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}
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TEST(libclang, VirtualFileOverlay_RemapDirectories) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/another/dir\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo2.h\",\n"
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" 'external-contents': \"/real/foo2.h\"\n"
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" }\n"
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" ]\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/virtual/dir\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo1.h\",\n"
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" 'external-contents': \"/real/foo1.h\"\n"
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" },\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo3.h\",\n"
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" 'external-contents': \"/real/foo3.h\"\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"in/subdir\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo4.h\",\n"
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" 'external-contents': \"/real/foo4.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/virtual/dir/foo1.h", "/real/foo1.h");
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T.map("/another/dir/foo2.h", "/real/foo2.h");
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T.map("/path/virtual/dir/foo3.h", "/real/foo3.h");
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T.map("/path/virtual/dir/in/subdir/foo4.h", "/real/foo4.h");
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}
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TEST(libclang, VirtualFileOverlay_CaseInsensitive) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'case-sensitive': 'false',\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/virtual\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo.h\",\n"
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" 'external-contents': \"/real/foo.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/virtual/foo.h", "/real/foo.h");
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clang_VirtualFileOverlay_setCaseSensitivity(T.VFO, false);
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}
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TEST(libclang, VirtualFileOverlay_SharedPrefix) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/foo\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"bar\",\n"
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" 'external-contents': \"/real/bar\"\n"
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" },\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"bar.h\",\n"
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" 'external-contents': \"/real/bar.h\"\n"
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" }\n"
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" ]\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/foobar\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"baz.h\",\n"
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" 'external-contents': \"/real/baz.h\"\n"
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" }\n"
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" ]\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foobarbaz.h\",\n"
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" 'external-contents': \"/real/foobarbaz.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/foo/bar.h", "/real/bar.h");
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T.map("/path/foo/bar", "/real/bar");
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T.map("/path/foobar/baz.h", "/real/baz.h");
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T.map("/path/foobarbaz.h", "/real/foobarbaz.h");
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}
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TEST(libclang, VirtualFileOverlay_AdjacentDirectory) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/dir1\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo.h\",\n"
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" 'external-contents': \"/real/foo.h\"\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"subdir\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"bar.h\",\n"
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" 'external-contents': \"/real/bar.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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" },\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/path/dir2\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"baz.h\",\n"
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" 'external-contents': \"/real/baz.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/path/dir1/foo.h", "/real/foo.h");
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T.map("/path/dir1/subdir/bar.h", "/real/bar.h");
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T.map("/path/dir2/baz.h", "/real/baz.h");
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}
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TEST(libclang, VirtualFileOverlay_TopLevel) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" {\n"
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" 'type': 'directory',\n"
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" 'name': \"/\",\n"
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" 'contents': [\n"
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" {\n"
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" 'type': 'file',\n"
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" 'name': \"foo.h\",\n"
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" 'external-contents': \"/real/foo.h\"\n"
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" }\n"
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" ]\n"
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" }\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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T.map("/foo.h", "/real/foo.h");
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}
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TEST(libclang, VirtualFileOverlay_Empty) {
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const char *contents =
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"{\n"
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" 'version': 0,\n"
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" 'roots': [\n"
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" ]\n"
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"}\n";
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TestVFO T(contents);
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}
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TEST(libclang, ModuleMapDescriptor) {
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const char *Contents =
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"framework module TestFrame {\n"
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" umbrella header \"TestFrame.h\"\n"
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"\n"
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" export *\n"
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" module * { export * }\n"
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"}\n";
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CXModuleMapDescriptor MMD = clang_ModuleMapDescriptor_create(0);
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clang_ModuleMapDescriptor_setFrameworkModuleName(MMD, "TestFrame");
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clang_ModuleMapDescriptor_setUmbrellaHeader(MMD, "TestFrame.h");
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char *BufPtr;
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unsigned BufSize;
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clang_ModuleMapDescriptor_writeToBuffer(MMD, 0, &BufPtr, &BufSize);
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std::string BufStr(BufPtr, BufSize);
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EXPECT_STREQ(Contents, BufStr.c_str());
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free(BufPtr);
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clang_ModuleMapDescriptor_dispose(MMD);
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}
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class LibclangReparseTest : public ::testing::Test {
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std::set<std::string> Files;
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public:
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std::string TestDir;
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CXIndex Index;
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CXTranslationUnit ClangTU;
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unsigned TUFlags;
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void SetUp() override {
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llvm::SmallString<256> Dir;
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ASSERT_FALSE(llvm::sys::fs::createUniqueDirectory("libclang-test", Dir));
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TestDir = Dir.str();
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TUFlags = CXTranslationUnit_DetailedPreprocessingRecord |
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clang_defaultEditingTranslationUnitOptions();
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Index = clang_createIndex(0, 0);
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}
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void TearDown() override {
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clang_disposeTranslationUnit(ClangTU);
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clang_disposeIndex(Index);
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for (const std::string &Path : Files)
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llvm::sys::fs::remove(Path);
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llvm::sys::fs::remove(TestDir);
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}
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void WriteFile(std::string &Filename, const std::string &Contents) {
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if (!llvm::sys::path::is_absolute(Filename)) {
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llvm::SmallString<256> Path(TestDir);
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llvm::sys::path::append(Path, Filename);
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Filename = Path.str();
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Files.insert(Filename);
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}
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std::ofstream OS(Filename);
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OS << Contents;
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}
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void DisplayDiagnostics() {
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unsigned NumDiagnostics = clang_getNumDiagnostics(ClangTU);
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for (unsigned i = 0; i < NumDiagnostics; ++i) {
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auto Diag = clang_getDiagnostic(ClangTU, i);
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DEBUG(llvm::dbgs() << clang_getCString(clang_formatDiagnostic(
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Diag, clang_defaultDiagnosticDisplayOptions())) << "\n");
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clang_disposeDiagnostic(Diag);
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}
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}
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bool ReparseTU(unsigned num_unsaved_files, CXUnsavedFile* unsaved_files) {
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if (clang_reparseTranslationUnit(ClangTU, num_unsaved_files, unsaved_files,
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clang_defaultReparseOptions(ClangTU))) {
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DEBUG(llvm::dbgs() << "Reparse failed\n");
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return false;
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}
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DisplayDiagnostics();
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return true;
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}
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};
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TEST_F(LibclangReparseTest, Reparse) {
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const char *HeaderTop = "#ifndef H\n#define H\nstruct Foo { int bar;";
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const char *HeaderBottom = "\n};\n#endif\n";
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const char *CppFile = "#include \"HeaderFile.h\"\nint main() {"
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" Foo foo; foo.bar = 7; foo.baz = 8; }\n";
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std::string HeaderName = "HeaderFile.h";
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std::string CppName = "CppFile.cpp";
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WriteFile(CppName, CppFile);
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WriteFile(HeaderName, std::string(HeaderTop) + HeaderBottom);
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ClangTU = clang_parseTranslationUnit(Index, CppName.c_str(), nullptr, 0,
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nullptr, 0, TUFlags);
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EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
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DisplayDiagnostics();
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// Immedaitely reparse.
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ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
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EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
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std::string NewHeaderContents =
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std::string(HeaderTop) + "int baz;" + HeaderBottom;
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WriteFile(HeaderName, NewHeaderContents);
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// Reparse after fix.
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ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
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EXPECT_EQ(0U, clang_getNumDiagnostics(ClangTU));
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}
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TEST_F(LibclangReparseTest, ReparseWithModule) {
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const char *HeaderTop = "#ifndef H\n#define H\nstruct Foo { int bar;";
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const char *HeaderBottom = "\n};\n#endif\n";
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const char *MFile = "#include \"HeaderFile.h\"\nint main() {"
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" struct Foo foo; foo.bar = 7; foo.baz = 8; }\n";
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const char *ModFile = "module A { header \"HeaderFile.h\" }\n";
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std::string HeaderName = "HeaderFile.h";
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std::string MName = "MFile.m";
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std::string ModName = "module.modulemap";
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WriteFile(MName, MFile);
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WriteFile(HeaderName, std::string(HeaderTop) + HeaderBottom);
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WriteFile(ModName, ModFile);
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std::string ModulesCache = std::string("-fmodules-cache-path=") + TestDir;
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const char *Args[] = { "-fmodules", ModulesCache.c_str(),
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"-I", TestDir.c_str() };
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int NumArgs = sizeof(Args) / sizeof(Args[0]);
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ClangTU = clang_parseTranslationUnit(Index, MName.c_str(), Args, NumArgs,
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nullptr, 0, TUFlags);
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EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
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DisplayDiagnostics();
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// Immedaitely reparse.
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ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
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EXPECT_EQ(1U, clang_getNumDiagnostics(ClangTU));
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std::string NewHeaderContents =
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std::string(HeaderTop) + "int baz;" + HeaderBottom;
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WriteFile(HeaderName, NewHeaderContents);
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// Reparse after fix.
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ASSERT_TRUE(ReparseTU(0, nullptr /* No unsaved files. */));
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EXPECT_EQ(0U, clang_getNumDiagnostics(ClangTU));
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}
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