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// Copyright 2012 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 "deps_log.h"
#include "graph.h"
#include "util.h"
#include "test.h"
namespace {
const char kTestFilename[] = "DepsLogTest-tempfile";
struct DepsLogTest : public testing::Test {
virtual void SetUp() {
// In case a crashing test left a stale file behind.
unlink(kTestFilename);
}
virtual void TearDown() {
//unlink(kTestFilename);
}
};
TEST_F(DepsLogTest, WriteRead) {
State state1;
DepsLog log1;
string err;
EXPECT_TRUE(log1.OpenForWrite(kTestFilename, &err));
ASSERT_EQ("", err);
{
vector<Node*> deps;
deps.push_back(state1.GetNode("foo.h"));
deps.push_back(state1.GetNode("bar.h"));
log1.RecordDeps(state1.GetNode("out.o"), 1, deps);
deps.clear();
deps.push_back(state1.GetNode("foo.h"));
deps.push_back(state1.GetNode("bar2.h"));
log1.RecordDeps(state1.GetNode("out2.o"), 2, deps);
}
log1.Close();
State state2;
DepsLog log2;
EXPECT_TRUE(log2.Load(kTestFilename, &state2, &err));
ASSERT_EQ("", err);
ASSERT_EQ(log1.nodes().size(), log2.nodes().size());
for (int i = 0; i < (int)log1.nodes().size(); ++i) {
Node* node1 = log1.nodes()[i];
Node* node2 = log2.nodes()[i];
ASSERT_EQ(i, node1->id());
ASSERT_EQ(node1->id(), node2->id());
}
// log1 has no deps entries, as it was only used for writing.
// Manually check the entries in log2.
DepsLog::Deps* deps = log2.GetDeps(state2.GetNode("out.o"));
ASSERT_TRUE(deps);
ASSERT_EQ(1, deps->mtime);
ASSERT_EQ(2, deps->node_count);
ASSERT_EQ("foo.h", deps->nodes[0]->path());
ASSERT_EQ("bar.h", deps->nodes[1]->path());
}
// Verify that adding the same deps twice doesn't grow the file.
TEST_F(DepsLogTest, DoubleEntry) {
// Write some deps to the file and grab its size.
int file_size;
{
State state;
DepsLog log;
string err;
EXPECT_TRUE(log.OpenForWrite(kTestFilename, &err));
ASSERT_EQ("", err);
vector<Node*> deps;
deps.push_back(state.GetNode("foo.h"));
deps.push_back(state.GetNode("bar.h"));
log.RecordDeps(state.GetNode("out.o"), 1, deps);
log.Close();
struct stat st;
ASSERT_EQ(0, stat(kTestFilename, &st));
file_size = (int)st.st_size;
ASSERT_GT(file_size, 0);
}
// Now reload the file, and readd the same deps.
{
State state;
DepsLog log;
string err;
EXPECT_TRUE(log.Load(kTestFilename, &state, &err));
EXPECT_TRUE(log.OpenForWrite(kTestFilename, &err));
ASSERT_EQ("", err);
vector<Node*> deps;
deps.push_back(state.GetNode("foo.h"));
deps.push_back(state.GetNode("bar.h"));
log.RecordDeps(state.GetNode("out.o"), 1, deps);
log.Close();
struct stat st;
ASSERT_EQ(0, stat(kTestFilename, &st));
int file_size_2 = (int)st.st_size;
ASSERT_EQ(file_size, file_size_2);
}
}
// Verify that adding the new deps works and can be compacted away.
TEST_F(DepsLogTest, Recompact) {
// Write some deps to the file and grab its size.
int file_size;
{
State state;
DepsLog log;
string err;
ASSERT_TRUE(log.OpenForWrite(kTestFilename, &err));
ASSERT_EQ("", err);
vector<Node*> deps;
deps.push_back(state.GetNode("foo.h"));
deps.push_back(state.GetNode("bar.h"));
log.RecordDeps(state.GetNode("out.o"), 1, deps);
log.Close();
struct stat st;
ASSERT_EQ(0, stat(kTestFilename, &st));
file_size = (int)st.st_size;
ASSERT_GT(file_size, 0);
}
// Now reload the file, and add slighly different deps.
int file_size_2;
{
State state;
DepsLog log;
string err;
ASSERT_TRUE(log.Load(kTestFilename, &state, &err));
ASSERT_TRUE(log.OpenForWrite(kTestFilename, &err));
ASSERT_EQ("", err);
vector<Node*> deps;
deps.push_back(state.GetNode("foo.h"));
log.RecordDeps(state.GetNode("out.o"), 1, deps);
log.Close();
struct stat st;
ASSERT_EQ(0, stat(kTestFilename, &st));
file_size_2 = (int)st.st_size;
// The file should grow to record the new deps.
ASSERT_GT(file_size_2, file_size);
}
// Now reload the file, verify the new deps have replaced the old, then
// recompact.
{
State state;
DepsLog log;
string err;
ASSERT_TRUE(log.Load(kTestFilename, &state, &err));
DepsLog::Deps* deps = log.GetDeps(state.GetNode("out.o"));
ASSERT_TRUE(deps);
ASSERT_EQ(1, deps->mtime);
ASSERT_EQ(1, deps->node_count);
ASSERT_EQ("foo.h", deps->nodes[0]->path());
ASSERT_TRUE(log.Recompact(kTestFilename, &err));
struct stat st;
ASSERT_EQ(0, stat(kTestFilename, &st));
int file_size_3 = (int)st.st_size;
// The file should have shrunk a bit for the smaller deps.
ASSERT_LT(file_size_3, file_size_2);
}
}
// Verify that invalid file headers cause a new build.
TEST_F(DepsLogTest, InvalidHeader) {
const char *kInvalidHeaders[] = {
"", // Empty file.
"# ninjad", // Truncated first line.
"# ninjadeps\n", // No version int.
"# ninjadeps\n\001\002", // Truncated version int.
"# ninjadeps\n\001\002\003\004" // Invalid version int.
};
for (size_t i = 0; i < sizeof(kInvalidHeaders) / sizeof(kInvalidHeaders[0]);
++i) {
FILE* deps_log = fopen(kTestFilename, "wb");
ASSERT_TRUE(deps_log != NULL);
ASSERT_EQ(
strlen(kInvalidHeaders[i]),
fwrite(kInvalidHeaders[i], 1, strlen(kInvalidHeaders[i]), deps_log));
ASSERT_EQ(0 ,fclose(deps_log));
string err;
DepsLog log;
State state;
ASSERT_TRUE(log.Load(kTestFilename, &state, &err));
EXPECT_EQ("bad deps log signature or version; starting over", err);
}
}
} // anonymous namespace
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