github.com/onflow/flow-go@v0.35.7-crescendo-preview.23-atree-inlining/fvm/environment/block_info_test.go (about)

     1  package environment_test
     2  
     3  import (
     4  	"fmt"
     5  	"testing"
     6  
     7  	"github.com/stretchr/testify/require"
     8  
     9  	"github.com/onflow/flow-go/cmd/util/ledger/util"
    10  	"github.com/onflow/flow-go/fvm/environment"
    11  	"github.com/onflow/flow-go/fvm/tracing"
    12  	"github.com/onflow/flow-go/model/flow"
    13  	storageErr "github.com/onflow/flow-go/storage"
    14  	"github.com/onflow/flow-go/utils/unittest"
    15  )
    16  
    17  func TestBlockInfo(t *testing.T) {
    18  	tracer := tracing.NewMockTracerSpan()
    19  	meter := &util.NopMeter{}
    20  	blocks := &mockBlocks{
    21  		blocks: make(map[uint64]*flow.Header),
    22  	}
    23  	height := uint64(flow.DefaultTransactionExpiry)
    24  	header := unittest.BlockHeaderWithHeight(height)
    25  
    26  	bi := environment.NewBlockInfo(tracer, meter, header, blocks)
    27  
    28  	// verify the current block exists
    29  	blocks.Add(header)
    30  	b, exists, err := bi.GetBlockAtHeight(height)
    31  	require.NoError(t, err)
    32  	require.True(t, exists)
    33  	require.Equal(t, header.Height, b.Height)
    34  
    35  	// verify blocks that do not exist
    36  	b, exists, err = bi.GetBlockAtHeight(height + 1)
    37  	require.NoError(t, err)
    38  	require.False(t, exists)
    39  
    40  	// verify that the block at the height before the lowest accepted height exists
    41  	lowestAcceptedHeight := height - flow.DefaultTransactionExpiry
    42  	lowestHeader := unittest.BlockHeaderWithHeight(lowestAcceptedHeight)
    43  	blocks.Add(lowestHeader)
    44  	b, exists, err = bi.GetBlockAtHeight(lowestAcceptedHeight)
    45  	require.NoError(t, err)
    46  	require.True(t, exists)
    47  	require.Equal(t, lowestHeader.Height, b.Height)
    48  
    49  	// verify that the block at the height before the lowest accepted height does not exist
    50  	_, exists, err = bi.GetBlockAtHeight(lowestAcceptedHeight - 1)
    51  	require.NoError(t, err)
    52  	require.False(t, exists)
    53  }
    54  
    55  type mockBlocks struct {
    56  	blocks map[uint64]*flow.Header
    57  }
    58  
    59  func (m *mockBlocks) ByHeightFrom(height uint64, header *flow.Header) (*flow.Header, error) {
    60  	h, ok := m.blocks[height]
    61  	if !ok {
    62  		return nil, fmt.Errorf("block does not exist: %w", storageErr.ErrNotFound)
    63  	}
    64  	return h, nil
    65  }
    66  
    67  func (m *mockBlocks) Add(h *flow.Header) {
    68  	m.blocks[h.Height] = h
    69  }