[zircon/blobfs] Add large integration test example.
This is an example of porting an integration test that requires
a special-size ramdisk (and doesn't run on real hardware).
ZX-4203 #comment Port LargeBlobTest.UseSecondBitmap
Change-Id: I322aea9ea34e34dbf6f848b7559309b2adc81a31
diff --git a/zircon/system/ulib/blobfs/test/integration/blobfs_integration_test.cpp b/zircon/system/ulib/blobfs/test/integration/blobfs_integration_test.cpp
index 9aab6eb..6bc0ad8 100644
--- a/zircon/system/ulib/blobfs/test/integration/blobfs_integration_test.cpp
+++ b/zircon/system/ulib/blobfs/test/integration/blobfs_integration_test.cpp
@@ -1999,43 +1999,46 @@
END_TEST;
}
-static bool TestLargeBlob() {
- BEGIN_TEST;
+*/
- BlobfsTest blobfsTest(FsTestType::kNormal);
+class LargeBlobTest : public BlobfsTest {
+ public:
+ LargeBlobTest() {
+ // Create blobfs with enough data blocks to ensure 2 block bitmap blocks.
+ // Any number above kBlobfsBlockBits should do, and the larger the
+ // number, the bigger the disk (and memory used for the test).
+ superblock_.flags = 0;
+ superblock_.inode_count = blobfs::kBlobfsDefaultInodeCount;
+ superblock_.journal_block_count = blobfs::kDefaultJournalBlocks;
+ superblock_.data_block_count = 12 * blobfs::kBlobfsBlockBits / 10;
- // Create blobfs with enough data blocks to ensure 2 block bitmap blocks.
- blobfs::Superblock superblock;
- superblock.flags = 0;
- superblock.inode_count = blobfs::kBlobfsDefaultInodeCount;
- superblock.journal_block_count = blobfs::kDefaultJournalBlocks;
- superblock.data_block_count = 2 * blobfs::kBlobfsBlockBits;
- ASSERT_EQ(superblock.data_block_count % 2, 0);
+ const int kBlockSize = 512;
+ uint64_t blobfs_blocks = blobfs::TotalBlocks(superblock_);
+ uint64_t num_blocks = (blobfs_blocks * blobfs::kBlobfsBlockSize) / kBlockSize;
+ ramdisk_ = std::make_unique<RamDisk>(kBlockSize, num_blocks);
+ device_path_ = ramdisk_->path();
+ }
- uint64_t blobfs_blocks = blobfs::TotalBlocks(superblock);
- uint64_t ramdisk_blocks = (blobfs_blocks * blobfs::kBlobfsBlockSize)
- / blobfsTest.GetBlockSize();
- blobfsTest.SetBlockCount(ramdisk_blocks);
+ protected:
+ blobfs::Superblock superblock_;
- ASSERT_TRUE(blobfsTest.Init());
+ private:
+ std::unique_ptr<RamDisk> ramdisk_;
+};
+TEST_F(LargeBlobTest, UseSecondBitmap) {
// Create (and delete) a blob large enough to overflow into the second bitmap block.
- fbl::unique_ptr<fs_test_utils::BlobInfo> info;
- size_t blob_size = ((superblock.data_block_count / 2) + 1) * blobfs::kBlobfsBlockSize;
- ASSERT_TRUE(fs_test_utils::GenerateRandomBlob(MOUNT_PATH, blob_size, &info));
+ std::unique_ptr<fs_test_utils::BlobInfo> info;
+ size_t blob_size = ((superblock_.data_block_count / 2) + 1) * blobfs::kBlobfsBlockSize;
+ ASSERT_TRUE(fs_test_utils::GenerateRandomBlob(kMountPath, blob_size, &info));
fbl::unique_fd fd;
- ASSERT_TRUE(MakeBlob(info.get(), &fd));
+ ASSERT_NO_FAILURES(MakeBlob(info.get(), &fd));
ASSERT_EQ(syncfs(fd.get()), 0);
ASSERT_EQ(close(fd.release()), 0);
ASSERT_EQ(unlink(info->path), 0);
-
- ASSERT_TRUE(blobfsTest.Teardown());
- END_TEST;
}
-*/
-
} // namespace
/*
@@ -2081,7 +2084,6 @@
RUN_TESTS(LARGE, CreateWriteReopen)
RUN_TEST_MEDIUM(TestCreateFailure)
RUN_TEST_MEDIUM(TestExtendFailure)
-RUN_TEST_LARGE(TestLargeBlob)
RUN_TESTS(SMALL, TestFailedWrite)
END_TEST_CASE(blobfs_tests)
