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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package memory
import (
"testing"
"github.com/stretchr/testify/assert"
)
func isAlignedTo(addr, alignment int) bool {
return addr&(alignment-1) == 0
}
func TestGoAllocator_Allocate(t *testing.T) {
tests := []struct {
name string
sz int
}{
{"lt alignment", 33},
{"gt alignment unaligned", 65},
{"eq alignment", 64},
{"large unaligned", 4097},
{"large aligned", 8192},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
a := &GoAllocator{}
buf := a.Allocate(test.sz)
addr := addressOf(buf)
assert.True(t, isAlignedTo(int(addr), alignment))
assert.Equal(t, test.sz, len(buf), "invalid len")
assert.Equal(t, test.sz, cap(buf), "invalid cap")
})
}
}
func TestGoAllocator_Reallocate(t *testing.T) {
tests := []struct {
name string
sz1, sz2 int
}{
{"smaller", 200, 100},
{"same", 200, 200},
{"larger", 200, 300},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
a := &GoAllocator{}
buf := a.Allocate(test.sz1)
for i := range buf {
buf[i] = byte(i & 0xff)
}
exp := make([]byte, test.sz2)
copy(exp, buf)
newBuf := a.Reallocate(test.sz2, buf)
assert.Equal(t, exp, newBuf)
})
}
}
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