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//
// 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
//
// http://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 <assert.h>
#include <stdio.h>
#ifdef _WIN32
#include <io.h>
#include <windows.h>
#include <direct.h>
#endif
#include "disk_interface.h"
#include "graph.h"
#include "test.h"
using namespace std;
namespace {
struct DiskInterfaceTest : public testing::Test {
virtual void SetUp() {
// These tests do real disk accesses, so create a temp dir.
temp_dir_.CreateAndEnter("Ninja-DiskInterfaceTest");
}
virtual void TearDown() {
temp_dir_.Cleanup();
}
bool Touch(const char* path) {
FILE *f = fopen(path, "w");
if (!f)
return false;
return fclose(f) == 0;
}
ScopedTempDir temp_dir_;
RealDiskInterface disk_;
};
TEST_F(DiskInterfaceTest, StatMissingFile) {
string err;
EXPECT_EQ(0, disk_.Stat("nosuchfile", &err));
EXPECT_EQ("", err);
// On Windows, the errno for a file in a nonexistent directory
// is different.
EXPECT_EQ(0, disk_.Stat("nosuchdir/nosuchfile", &err));
EXPECT_EQ("", err);
// On POSIX systems, the errno is different if a component of the
// path prefix is not a directory.
ASSERT_TRUE(Touch("notadir"));
EXPECT_EQ(0, disk_.Stat("notadir/nosuchfile", &err));
EXPECT_EQ("", err);
}
TEST_F(DiskInterfaceTest, StatMissingFileWithCache) {
disk_.AllowStatCache(true);
string err;
// On Windows, the errno for FindFirstFileExA, which is used when the stat
// cache is enabled, is different when the directory name is not a directory.
ASSERT_TRUE(Touch("notadir"));
EXPECT_EQ(0, disk_.Stat("notadir/nosuchfile", &err));
EXPECT_EQ("", err);
}
TEST_F(DiskInterfaceTest, StatBadPath) {
string err;
#ifdef _WIN32
string bad_path("cc:\\foo");
EXPECT_EQ(-1, disk_.Stat(bad_path, &err));
EXPECT_NE("", err);
#else
string too_long_name(512, 'x');
EXPECT_EQ(-1, disk_.Stat(too_long_name, &err));
EXPECT_NE("", err);
#endif
}
TEST_F(DiskInterfaceTest, StatExistingFile) {
string err;
ASSERT_TRUE(Touch("file"));
EXPECT_GT(disk_.Stat("file", &err), 1);
EXPECT_EQ("", err);
}
#ifdef _WIN32
TEST_F(DiskInterfaceTest, StatExistingFileWithLongPath) {
string err;
char currentdir[32767];
_getcwd(currentdir, sizeof(currentdir));
const string filename = string(currentdir) +
"\\filename_with_256_characters_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx\
xxxxxxxxxxxxxxxxxxxxx";
const string prefixed = "\\\\?\\" + filename;
ASSERT_TRUE(Touch(prefixed.c_str()));
EXPECT_GT(disk_.Stat(disk_.AreLongPathsEnabled() ?
filename : prefixed, &err), 1);
EXPECT_EQ("", err);
}
#endif
TEST_F(DiskInterfaceTest, StatExistingDir) {
string err;
ASSERT_TRUE(disk_.MakeDir("subdir"));
ASSERT_TRUE(disk_.MakeDir("subdir/subsubdir"));
EXPECT_GT(disk_.Stat("..", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat(".", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("subdir", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("subdir/subsubdir", &err), 1);
EXPECT_EQ("", err);
EXPECT_EQ(disk_.Stat("subdir", &err),
disk_.Stat("subdir/.", &err));
EXPECT_EQ(disk_.Stat("subdir", &err),
disk_.Stat("subdir/subsubdir/..", &err));
EXPECT_EQ(disk_.Stat("subdir/subsubdir", &err),
disk_.Stat("subdir/subsubdir/.", &err));
}
#ifdef _WIN32
TEST_F(DiskInterfaceTest, StatCache) {
string err;
ASSERT_TRUE(Touch("file1"));
ASSERT_TRUE(Touch("fiLE2"));
ASSERT_TRUE(disk_.MakeDir("subdir"));
ASSERT_TRUE(disk_.MakeDir("subdir/subsubdir"));
ASSERT_TRUE(Touch("subdir\\subfile1"));
ASSERT_TRUE(Touch("subdir\\SUBFILE2"));
ASSERT_TRUE(Touch("subdir\\SUBFILE3"));
disk_.AllowStatCache(false);
TimeStamp parent_stat_uncached = disk_.Stat("..", &err);
disk_.AllowStatCache(true);
EXPECT_GT(disk_.Stat("FIle1", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("file1", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("subdir/subfile2", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("sUbdir\\suBFile1", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("..", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat(".", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("subdir", &err), 1);
EXPECT_EQ("", err);
EXPECT_GT(disk_.Stat("subdir/subsubdir", &err), 1);
EXPECT_EQ("", err);
#ifndef _MSC_VER // TODO: Investigate why. Also see https://github.com/ninja-build/ninja/pull/1423
EXPECT_EQ(disk_.Stat("subdir", &err),
disk_.Stat("subdir/.", &err));
EXPECT_EQ("", err);
EXPECT_EQ(disk_.Stat("subdir", &err),
disk_.Stat("subdir/subsubdir/..", &err));
#endif
EXPECT_EQ("", err);
EXPECT_EQ(disk_.Stat("..", &err), parent_stat_uncached);
EXPECT_EQ("", err);
EXPECT_EQ(disk_.Stat("subdir/subsubdir", &err),
disk_.Stat("subdir/subsubdir/.", &err));
EXPECT_EQ("", err);
// Test error cases.
string bad_path("cc:\\foo");
EXPECT_EQ(-1, disk_.Stat(bad_path, &err));
EXPECT_NE("", err); err.clear();
EXPECT_EQ(-1, disk_.Stat(bad_path, &err));
EXPECT_NE("", err); err.clear();
EXPECT_EQ(0, disk_.Stat("nosuchfile", &err));
EXPECT_EQ("", err);
EXPECT_EQ(0, disk_.Stat("nosuchdir/nosuchfile", &err));
EXPECT_EQ("", err);
}
#endif
TEST_F(DiskInterfaceTest, ReadFile) {
string err;
std::string content;
ASSERT_EQ(DiskInterface::NotFound,
disk_.ReadFile("foobar", &content, &err));
EXPECT_EQ("", content);
EXPECT_NE("", err); // actual value is platform-specific
err.clear();
const char* kTestFile = "testfile";
FILE* f = fopen(kTestFile, "wb");
ASSERT_TRUE(f);
const char* kTestContent = "test content\nok";
fprintf(f, "%s", kTestContent);
ASSERT_EQ(0, fclose(f));
ASSERT_EQ(DiskInterface::Okay,
disk_.ReadFile(kTestFile, &content, &err));
EXPECT_EQ(kTestContent, content);
EXPECT_EQ("", err);
}
TEST_F(DiskInterfaceTest, MakeDirs) {
string path = "path/with/double//slash/";
EXPECT_TRUE(disk_.MakeDirs(path));
FILE* f = fopen((path + "a_file").c_str(), "w");
EXPECT_TRUE(f);
EXPECT_EQ(0, fclose(f));
#ifdef _WIN32
string path2 = "another\\with\\back\\\\slashes\\";
EXPECT_TRUE(disk_.MakeDirs(path2));
FILE* f2 = fopen((path2 + "a_file").c_str(), "w");
EXPECT_TRUE(f2);
EXPECT_EQ(0, fclose(f2));
#endif
}
TEST_F(DiskInterfaceTest, RemoveFile) {
const char* kFileName = "file-to-remove";
ASSERT_TRUE(Touch(kFileName));
EXPECT_EQ(0, disk_.RemoveFile(kFileName));
EXPECT_EQ(1, disk_.RemoveFile(kFileName));
EXPECT_EQ(1, disk_.RemoveFile("does not exist"));
#ifdef _WIN32
ASSERT_TRUE(Touch(kFileName));
EXPECT_EQ(0, system((std::string("attrib +R ") + kFileName).c_str()));
EXPECT_EQ(0, disk_.RemoveFile(kFileName));
EXPECT_EQ(1, disk_.RemoveFile(kFileName));
#endif
}
TEST_F(DiskInterfaceTest, RemoveDirectory) {
const char* kDirectoryName = "directory-to-remove";
EXPECT_TRUE(disk_.MakeDir(kDirectoryName));
EXPECT_EQ(0, disk_.RemoveFile(kDirectoryName));
EXPECT_EQ(1, disk_.RemoveFile(kDirectoryName));
EXPECT_EQ(1, disk_.RemoveFile("does not exist"));
}
struct StatTest : public StateTestWithBuiltinRules,
public DiskInterface {
StatTest() : scan_(&state_, NULL, NULL, this, NULL, NULL) {}
// DiskInterface implementation.
TimeStamp Stat(const string& path, string* err) const override;
bool WriteFile(const string& path, const string& contents,
bool /*crlf_on_windows*/) override {
assert(false);
return true;
}
bool MakeDir(const string& path) override {
assert(false);
return false;
}
Status ReadFile(const string& path, string* contents, string* err) override {
assert(false);
return NotFound;
}
int RemoveFile(const string& path) override {
assert(false);
return 0;
}
DependencyScan scan_;
map<string, TimeStamp> mtimes_;
mutable vector<string> stats_;
};
TimeStamp StatTest::Stat(const string& path, string* err) const {
stats_.push_back(path);
map<string, TimeStamp>::const_iterator i = mtimes_.find(path);
if (i == mtimes_.end())
return 0; // File not found.
return i->second;
}
TEST_F(StatTest, Simple) {
ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat in\n"));
Node* out = GetNode("out");
string err;
EXPECT_TRUE(out->Stat(this, &err));
EXPECT_EQ("", err);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out, NULL, NULL);
ASSERT_EQ(2u, stats_.size());
ASSERT_EQ("out", stats_[0]);
ASSERT_EQ("in", stats_[1]);
}
TEST_F(StatTest, TwoStep) {
ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n"));
Node* out = GetNode("out");
string err;
EXPECT_TRUE(out->Stat(this, &err));
EXPECT_EQ("", err);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out, NULL, NULL);
ASSERT_EQ(3u, stats_.size());
ASSERT_EQ("out", stats_[0]);
ASSERT_TRUE(GetNode("out")->dirty());
ASSERT_EQ("mid", stats_[1]);
ASSERT_TRUE(GetNode("mid")->dirty());
ASSERT_EQ("in", stats_[2]);
}
TEST_F(StatTest, Tree) {
ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat mid1 mid2\n"
"build mid1: cat in11 in12\n"
"build mid2: cat in21 in22\n"));
Node* out = GetNode("out");
string err;
EXPECT_TRUE(out->Stat(this, &err));
EXPECT_EQ("", err);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out, NULL, NULL);
ASSERT_EQ(1u + 6u, stats_.size());
ASSERT_EQ("mid1", stats_[1]);
ASSERT_TRUE(GetNode("mid1")->dirty());
ASSERT_EQ("in11", stats_[2]);
}
TEST_F(StatTest, Middle) {
ASSERT_NO_FATAL_FAILURE(AssertParse(&state_,
"build out: cat mid\n"
"build mid: cat in\n"));
mtimes_["in"] = 1;
mtimes_["mid"] = 0; // missing
mtimes_["out"] = 1;
Node* out = GetNode("out");
string err;
EXPECT_TRUE(out->Stat(this, &err));
EXPECT_EQ("", err);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out, NULL, NULL);
ASSERT_FALSE(GetNode("in")->dirty());
ASSERT_TRUE(GetNode("mid")->dirty());
ASSERT_TRUE(GetNode("out")->dirty());
}
} // namespace
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