Add a test for OutMessage.Grow.
parent
e329c0ef33
commit
ad65849346
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@ -92,7 +92,10 @@ func TestOutMessageReset(t *testing.T) {
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const trials = 100
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for i := 0; i < trials; i++ {
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fillWithGarbage(unsafe.Pointer(h), int(unsafe.Sizeof(*h)))
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err := fillWithGarbage(unsafe.Pointer(h), int(unsafe.Sizeof(*h)))
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if err != nil {
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t.Fatalf("fillWithGarbage: %v", err)
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}
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om.Reset()
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if h.Len != 0 {
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@ -109,6 +112,32 @@ func TestOutMessageReset(t *testing.T) {
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}
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}
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func TestOutMessageGrow(t *testing.T) {
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var om OutMessage
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// Overwrite with garbage.
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err := fillWithGarbage(unsafe.Pointer(&om), int(unsafe.Sizeof(om)))
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if err != nil {
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t.Fatalf("fillWithGarbage: %v", err)
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}
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// Zero the header.
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om.Reset()
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// Grow to the max size. This should zero the message.
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if p := om.Grow(MaxReadSize); p == nil {
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t.Fatal("Grow returned nil")
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}
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// Check that everything has been zeroed.
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b := om.Bytes()
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for i, x := range b {
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if x != 0 {
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t.Fatalf("non-zero byte 0x%02x at offset %d", x, i)
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}
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}
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}
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func BenchmarkOutMessageReset(b *testing.B) {
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// A single buffer, which should fit in some level of CPU cache.
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b.Run("Single buffer", func(b *testing.B) {
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