forked from TrueCloudLab/neoneo-go
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package cache
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import (
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/stretchr/testify/require"
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)
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func TestRelayCache_Add(t *testing.T) {
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const capacity = 3
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payloads := getDifferentItems(t, capacity+1)
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c := NewFIFOCache(capacity)
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require.Equal(t, 0, c.queue.Len())
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require.Equal(t, 0, len(c.elems))
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for i := 1; i < capacity; i++ {
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c.Add(&payloads[i])
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require.True(t, c.Has(payloads[i].Hash()))
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require.Equal(t, i, c.queue.Len())
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require.Equal(t, i, len(c.elems))
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}
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// add already existing payload
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c.Add(&payloads[1])
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require.Equal(t, capacity-1, c.queue.Len())
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require.Equal(t, capacity-1, len(c.elems))
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c.Add(&payloads[0])
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require.Equal(t, capacity, c.queue.Len())
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require.Equal(t, capacity, len(c.elems))
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// capacity does not exceed maximum
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c.Add(&payloads[capacity])
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require.Equal(t, capacity, c.queue.Len())
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require.Equal(t, capacity, len(c.elems))
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// recent payloads are still present in cache
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require.Equal(t, &payloads[0], c.Get(payloads[0].Hash()))
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for i := 2; i <= capacity; i++ {
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require.Equal(t, &payloads[i], c.Get(payloads[i].Hash()))
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}
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// oldest payload was removed
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require.Equal(t, nil, c.Get(payloads[1].Hash()))
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}
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type testHashable []byte
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// Hash implements Hashable.
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func (h testHashable) Hash() util.Uint256 { return hash.Sha256(h) }
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func getDifferentItems(t *testing.T, n int) []testHashable {
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items := make([]testHashable, n)
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for i := range items {
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items[i] = []byte{byte(i)}
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}
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return items
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}
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