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58 lines
1.8 KiB
58 lines
1.8 KiB
package state
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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tmtime "github.com/tendermint/tendermint/libs/time"
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)
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func TestWeightedMedian(t *testing.T) {
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m := make([]*weightedTime, 3)
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t1 := tmtime.Now()
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t2 := t1.Add(5 * time.Second)
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t3 := t1.Add(10 * time.Second)
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m[2] = newWeightedTime(t1, 33) // faulty processes
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m[0] = newWeightedTime(t2, 40) // correct processes
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m[1] = newWeightedTime(t3, 27) // correct processes
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totalVotingPower := int64(100)
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median := weightedMedian(m, totalVotingPower)
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assert.Equal(t, t2, median)
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// median always returns value between values of correct processes
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assert.Equal(t, true, (median.After(t1) || median.Equal(t1)) &&
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(median.Before(t3) || median.Equal(t3)))
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m[1] = newWeightedTime(t1, 40) // correct processes
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m[2] = newWeightedTime(t2, 27) // correct processes
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m[0] = newWeightedTime(t3, 33) // faulty processes
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totalVotingPower = int64(100)
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median = weightedMedian(m, totalVotingPower)
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assert.Equal(t, t2, median)
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// median always returns value between values of correct processes
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assert.Equal(t, true, (median.After(t1) || median.Equal(t1)) &&
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(median.Before(t2) || median.Equal(t2)))
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m = make([]*weightedTime, 8)
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t4 := t1.Add(15 * time.Second)
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t5 := t1.Add(60 * time.Second)
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m[3] = newWeightedTime(t1, 10) // correct processes
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m[1] = newWeightedTime(t2, 10) // correct processes
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m[5] = newWeightedTime(t2, 10) // correct processes
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m[4] = newWeightedTime(t3, 23) // faulty processes
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m[0] = newWeightedTime(t4, 20) // correct processes
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m[7] = newWeightedTime(t5, 10) // faulty processes
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totalVotingPower = int64(83)
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median = weightedMedian(m, totalVotingPower)
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assert.Equal(t, t3, median)
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// median always returns value between values of correct processes
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assert.Equal(t, true, (median.After(t1) || median.Equal(t1)) &&
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(median.Before(t4) || median.Equal(t4)))
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}
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