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// Copyright 2011 Google Inc. All Rights Reserved.
//
// 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 <gtest/gtest.h>
#ifdef _WIN32
#include <io.h>
#include <windows.h>
#endif
#include "disk_interface.h"
#include "graph.h"
#include "test.h"
namespace {
class DiskInterfaceTest : public testing::Test {
public:
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) {
EXPECT_EQ(0, disk_.Stat("nosuchfile"));
// On Windows, the errno for a file in a nonexistent directory
// is different.
EXPECT_EQ(0, disk_.Stat("nosuchdir/nosuchfile"));
// 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"));
}
TEST_F(DiskInterfaceTest, StatBadPath) {
#ifdef _WIN32
string bad_path("cc:\\foo");
EXPECT_EQ(-1, disk_.Stat(bad_path));
#else
string too_long_name(512, 'x');
EXPECT_EQ(-1, disk_.Stat(too_long_name));
#endif
}
TEST_F(DiskInterfaceTest, StatExistingFile) {
ASSERT_TRUE(Touch("file"));
EXPECT_GT(disk_.Stat("file"), 1);
}
TEST_F(DiskInterfaceTest, ReadFile) {
string err;
EXPECT_EQ("", disk_.ReadFile("foobar", &err));
EXPECT_EQ("", err);
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));
EXPECT_EQ(kTestContent, disk_.ReadFile(kTestFile, &err));
EXPECT_EQ("", err);
}
TEST_F(DiskInterfaceTest, MakeDirs) {
EXPECT_TRUE(disk_.MakeDirs("path/with/double//slash/"));
}
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"));
}
struct StatTest : public StateTestWithBuiltinRules,
public DiskInterface {
StatTest() : scan_(&state_, this) {}
// DiskInterface implementation.
virtual TimeStamp Stat(const string& path);
virtual bool WriteFile(const string& path, const string& contents) {
assert(false);
return true;
}
virtual bool MakeDir(const string& path) {
assert(false);
return false;
}
virtual string ReadFile(const string& path, string* err) {
assert(false);
return "";
}
virtual int RemoveFile(const string& path) {
assert(false);
return 0;
}
DependencyScan scan_;
map<string, TimeStamp> mtimes_;
vector<string> stats_;
};
TimeStamp StatTest::Stat(const string& path) {
stats_.push_back(path);
map<string, TimeStamp>::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");
out->Stat(this);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out->in_edge(), 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");
out->Stat(this);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out->in_edge(), 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");
out->Stat(this);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out->in_edge(), 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");
out->Stat(this);
ASSERT_EQ(1u, stats_.size());
scan_.RecomputeDirty(out->in_edge(), NULL);
ASSERT_FALSE(GetNode("in")->dirty());
ASSERT_TRUE(GetNode("mid")->dirty());
ASSERT_TRUE(GetNode("out")->dirty());
}
} // namespace
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