109 lines
2.0 KiB
Go
109 lines
2.0 KiB
Go
package test
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import (
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"encoding/binary"
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"testing"
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"github.com/blevesearch/bleve/index/store"
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)
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// test merge behavior
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func encodeUint64(in uint64) []byte {
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rv := make([]byte, 8)
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binary.LittleEndian.PutUint64(rv, in)
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return rv
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}
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func CommonTestMerge(t *testing.T, s store.KVStore) {
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testKey := []byte("k1")
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data := []struct {
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key []byte
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val []byte
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}{
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{testKey, encodeUint64(1)},
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{testKey, encodeUint64(1)},
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}
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// open a writer
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writer, err := s.Writer()
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if err != nil {
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t.Fatal(err)
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}
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// write the data
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batch := writer.NewBatch()
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for _, row := range data {
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batch.Merge(row.key, row.val)
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}
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err = writer.ExecuteBatch(batch)
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if err != nil {
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t.Fatal(err)
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}
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// close the writer
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err = writer.Close()
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if err != nil {
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t.Fatal(err)
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}
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// open a reader
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reader, err := s.Reader()
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if err != nil {
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t.Fatal(err)
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}
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// read key
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returnedVal, err := reader.Get(testKey)
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if err != nil {
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t.Fatal(err)
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}
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// check the value
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mergedval := binary.LittleEndian.Uint64(returnedVal)
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if mergedval != 2 {
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t.Errorf("expected 2, got %d", mergedval)
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}
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// close the reader
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err = reader.Close()
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if err != nil {
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t.Fatal(err)
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}
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}
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// a test merge operator which is just an incrementing counter of uint64
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type TestMergeCounter struct{}
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func (mc *TestMergeCounter) FullMerge(key, existingValue []byte, operands [][]byte) ([]byte, bool) {
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var newval uint64
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if len(existingValue) > 0 {
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newval = binary.LittleEndian.Uint64(existingValue)
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}
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// now process operands
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for _, operand := range operands {
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next := binary.LittleEndian.Uint64(operand)
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newval += next
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}
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rv := make([]byte, 8)
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binary.LittleEndian.PutUint64(rv, newval)
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return rv, true
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}
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func (mc *TestMergeCounter) PartialMerge(key, leftOperand, rightOperand []byte) ([]byte, bool) {
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left := binary.LittleEndian.Uint64(leftOperand)
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right := binary.LittleEndian.Uint64(rightOperand)
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rv := make([]byte, 8)
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binary.LittleEndian.PutUint64(rv, left+right)
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return rv, true
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}
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func (mc *TestMergeCounter) Name() string {
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return "test_merge_counter"
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}
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