mirror of
https://github.com/dolthub/dolt.git
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55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
// Copyright 2019 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package nbs
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestCompressedChunkIsEmpty(t *testing.T) {
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if !EmptyCompressedChunk.IsEmpty() {
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t.Fatal("EmptyCompressedChunkIsEmpty() should equal true.")
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}
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if !(CompressedChunk{}).IsEmpty() {
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t.Fatal("CompressedChunk{}.IsEmpty() should equal true.")
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}
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}
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func TestCanReadAhead(t *testing.T) {
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type expected struct {
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end uint64
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can bool
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}
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type testCase struct {
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rec offsetRec
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start uint64
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end uint64
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blockSize uint64
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ex expected
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}
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for _, c := range []testCase{
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testCase{offsetRec{offset: 8191, length: 2048}, 0, 4096, 4096, expected{end: 10239, can: true}},
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testCase{offsetRec{offset: 8191, length: 2048}, 0, 4096, 2048, expected{end: 4096, can: false}},
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testCase{offsetRec{offset: 2048, length: 2048}, 0, 4096, 2048, expected{end: 4096, can: true}},
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testCase{offsetRec{offset: (1 << 27), length: 2048}, 0, 128 * 1024 * 1024, 4096, expected{end: 134217728, can: false}},
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} {
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end, can := canReadAhead(c.rec, c.start, c.end, c.blockSize)
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assert.Equal(t, c.ex.end, end)
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assert.Equal(t, c.ex.can, can)
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}
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}
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