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package gatt
import (
"bytes"
"testing"
)
// TODO: More test coverage.
func TestL2capWriterChunk(t *testing.T) {
cases := []struct {
mtu uint16
head int
chunk int
ok bool
}{
{mtu: 5, head: 0, chunk: 4, ok: true},
{mtu: 5, head: 0, chunk: 5, ok: true},
{mtu: 5, head: 0, chunk: 6, ok: false},
{mtu: 5, head: 1, chunk: 3, ok: true},
{mtu: 5, head: 1, chunk: 4, ok: true},
{mtu: 5, head: 1, chunk: 5, ok: false},
}
for _, tt := range cases {
w := newL2capWriter(tt.mtu)
var want []byte
for i := 0; i < tt.head; i++ {
w.WriteByteFit(byte(i))
want = append(want, byte(i))
}
w.Chunk()
for i := 0; i < tt.chunk; i++ {
w.WriteByteFit(byte(i))
if tt.ok {
want = append(want, byte(i))
}
}
ok := w.Commit()
if ok != tt.ok {
t.Errorf("Chunk(%d %d %d) commit: got %t want %t", tt.mtu, tt.head, tt.chunk, ok, tt.ok)
continue
}
if !bytes.Equal(want, w.Bytes()) {
t.Errorf("Chunk(%d %d %d) write: got %x want %x", tt.mtu, tt.head, tt.chunk, w.Bytes(), want)
}
}
}
func TestL2capWriterPanicDoubleChunk(t *testing.T) {
defer func() { recover() }()
w := newL2capWriter(5)
w.Chunk()
w.Chunk()
t.Errorf("l2capWriter should panic on double-chunk")
}
func TestL2capWriterPanicCommitBeforeChunk(t *testing.T) {
defer func() { recover() }()
w := newL2capWriter(5)
w.Commit()
t.Errorf("l2capWriter should panic on commit-before-chunk")
}
func TestL2capWriterPanicDoubleCommit(t *testing.T) {
defer func() { recover() }()
w := newL2capWriter(5)
w.Chunk()
w.Commit()
w.Commit()
t.Errorf("l2capWriter should panic on double-commit")
}
func BenchmarkWriteUint16(b *testing.B) {
for i := 0; i < b.N; i++ {
w := newL2capWriter(17)
w.WriteUint16Fit(0)
}
}
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