TEST_F(TestFileCache, WriteAndReadBack) {
// Set up something for FileCache to read in.
char data_fn[] = "/tmp/hhvm_unit_test-testdata.XXXXXX";
int data_fd = mkstemp(data_fn);
ASSERT_GT(data_fd, 0);
FILE* f = fdopen(data_fd, "w");
ASSERT_TRUE(f != nullptr);
fprintf(f, "%s", kTestData);
fclose(f);
// Set up a cache and put this data file in it.
FileCache fc;
fc.write("_unit_test_one_", data_fn);
fc.write("_unit_test_two_", false);
fc.write("/__invalid__/path/with/directories", true);
string temp_dir;
ASSERT_TRUE(makeTempDir(&temp_dir));
string cache_fn(temp_dir);
cache_fn.append("/cache.dump");
// Flush to disk.
fc.save(cache_fn.c_str());
// Sniff around the on-disk temp file.
FileCache ondisk;
EXPECT_EQ(ondisk.getVersion(cache_fn.c_str()), 2);
// Read back into another cache.
FileCache fc2;
fc2.loadMmap(cache_fn.c_str(), 1);
EXPECT_TRUE(fc2.fileExists("_unit_test_one_"));
int read_len;
bool compressed = false;
const char* read_data = fc2.read("_unit_test_one_", read_len, compressed);
EXPECT_STREQ(kTestData, read_data);
EXPECT_EQ(fc2.fileSize("_unit_test_one_", false), strlen(kTestData));
EXPECT_TRUE(fc2.fileExists("_unit_test_two_"));
EXPECT_FALSE(fc2.fileExists("_unit_test_three_"));
EXPECT_TRUE(fc2.dirExists("/__invalid__"));
EXPECT_TRUE(fc2.dirExists("/__invalid__/path"));
EXPECT_TRUE(fc2.dirExists("/__invalid__/path/with"));
EXPECT_TRUE(fc2.fileExists("/__invalid__/path/with/directories"));
// -1 is a magic value... here it means "it's a PHP file"...
EXPECT_EQ(fc2.fileSize("unit_test_two_", false), -1);
// ... and here it means "this thing does not exist".
EXPECT_EQ(fc2.fileSize("unit_test_three_", false), -1);
fc2.dump();
// Clean up the mess.
ASSERT_EQ(unlink(cache_fn.c_str()), 0);
ASSERT_EQ(rmdir(temp_dir.c_str()), 0);
ASSERT_EQ(unlink(data_fn), 0);
}
