mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-13 13:11:37 +01:00
82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
package storage
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import (
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"reflect"
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"testing"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
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)
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func TestMarshaledBlockHeaderSize(t *testing.T) {
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// This test makes sure marshaled format isn't changed.
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// If this test breaks then the storage format has been changed,
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// so it may become incompatible with the previously written data.
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expectedSize := 89
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if marshaledBlockHeaderSize != expectedSize {
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t.Fatalf("unexpected marshaledBlockHeaderSize; got %d; want %d", marshaledBlockHeaderSize, expectedSize)
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}
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}
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func TestBlockHeaderMarshalUnmarshal(t *testing.T) {
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var bh blockHeader
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for i := 0; i < 1000; i++ {
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bh.TSID.MetricID = uint64(i + 1)
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bh.MinTimestamp = int64(-i*1e3 + 2)
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bh.MaxTimestamp = int64(i*2e3 + 3)
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bh.TimestampsBlockOffset = uint64(i*12345 + 4)
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bh.ValuesBlockOffset = uint64(i*3243 + 5)
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bh.TimestampsBlockSize = uint32((i*892 + 6) % maxBlockSize)
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bh.ValuesBlockSize = uint32((i*894 + 7) % maxBlockSize)
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bh.RowsCount = uint32(i*3 + 8)
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bh.Scale = int16(i - 434 + 9)
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bh.TimestampsMarshalType = encoding.MarshalType((i + 10) % 7)
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bh.ValuesMarshalType = encoding.MarshalType((i + 11) % 7)
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bh.PrecisionBits = 1 + uint8((i+12)%64)
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testBlockHeaderMarshalUnmarshal(t, &bh)
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}
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}
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func testBlockHeaderMarshalUnmarshal(t *testing.T, bh *blockHeader) {
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t.Helper()
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dst := bh.Marshal(nil)
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if len(dst) != marshaledBlockHeaderSize {
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t.Fatalf("unexpected dst size; got %d; want %d", len(dst), marshaledBlockHeaderSize)
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}
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var bh1 blockHeader
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tail, err := bh1.Unmarshal(dst)
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if err != nil {
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t.Fatalf("cannot unmarshal bh=%+v from dst=%x: %s", bh, dst, err)
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}
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if len(tail) > 0 {
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t.Fatalf("unexpected tail left after unmarshaling of bh=%+v: %x", bh, tail)
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}
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if !reflect.DeepEqual(bh, &bh1) {
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t.Fatalf("unexpected bh unmarshaled; got\n%+v; want\n%+v", &bh1, bh)
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}
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prefix := []byte("foo")
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dstNew := bh.Marshal(prefix)
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if string(dstNew[:len(prefix)]) != string(prefix) {
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t.Fatalf("unexpected prefix after marshaling bh=%+v; got\n%x; want\n%x", bh, dstNew[:len(prefix)], prefix)
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}
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if string(dstNew[len(prefix):]) != string(dst) {
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t.Fatalf("unexpected prefixed dst for bh=%+v; got\n%x; want\n%x", bh, dstNew[len(prefix):], dst)
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}
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suffix := []byte("bar")
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dst = append(dst, suffix...)
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var bh2 blockHeader
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tail, err = bh2.Unmarshal(dst)
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if err != nil {
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t.Fatalf("cannot unmarshal bh=%+v from suffixed dst=%x: %s", bh, dst, err)
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}
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if string(tail) != string(suffix) {
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t.Fatalf("unexpected tail after unmarshaling bh=%+v; got\n%x; want\n%x", bh, tail, suffix)
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}
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if !reflect.DeepEqual(bh, &bh2) {
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t.Fatalf("unexpected bh unmarshaled after adding suffix; got\n%+v; want\n%+v", &bh2, bh)
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}
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}
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