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86 lines
1.7 KiB
86 lines
1.7 KiB
3 years ago
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// Copyright 2021 The Prometheus Authors
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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 chunkenc
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import (
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"math"
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestVarbitInt(t *testing.T) {
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numbers := []int64{
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math.MinInt64,
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-36028797018963968, -36028797018963967,
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-16777216, -16777215,
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-131072, -131071,
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-2048, -2047,
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-256, -255,
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-32, -31,
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-4, -3,
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-1, 0, 1,
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4, 5,
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32, 33,
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256, 257,
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2048, 2049,
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131072, 131073,
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16777216, 16777217,
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36028797018963968, 36028797018963969,
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math.MaxInt64,
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}
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bs := bstream{}
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for _, n := range numbers {
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putVarbitInt(&bs, n)
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}
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bsr := newBReader(bs.bytes())
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for _, want := range numbers {
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got, err := readVarbitInt(&bsr)
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require.NoError(t, err)
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require.Equal(t, want, got)
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}
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}
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func TestVarbitUint(t *testing.T) {
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numbers := []uint64{
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0, 1,
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7, 8,
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63, 64,
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511, 512,
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4095, 4096,
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262143, 262144,
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33554431, 33554432,
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72057594037927935, 72057594037927936,
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math.MaxUint64,
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}
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bs := bstream{}
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for _, n := range numbers {
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putVarbitUint(&bs, n)
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}
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bsr := newBReader(bs.bytes())
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for _, want := range numbers {
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got, err := readVarbitUint(&bsr)
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require.NoError(t, err)
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require.Equal(t, want, got)
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}
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}
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