97 lines
1.8 KiB
Go
97 lines
1.8 KiB
Go
package math_test
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import (
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"testing"
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"github.com/matryer/is"
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"go.sour.is/pkg/math"
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)
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func TestMath(t *testing.T) {
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is := is.New(t)
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is.Equal(5, math.Abs(-5))
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is.Equal(math.Abs(5), math.Abs(-5))
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is.Equal(10, math.Max(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))
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is.Equal(1, math.Min(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))
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is.Equal(1, math.Min(89, 71, 54, 48, 49, 1, 72, 88, 25, 69))
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is.Equal(89, math.Max(89, 71, 54, 48, 49, 1, 72, 88, 25, 69))
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is.Equal(0.9348207729, math.Max(
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0.3943310720,
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0.1090868377,
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0.9348207729,
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0.3525527584,
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0.4359833682,
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0.7958538081,
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0.1439352569,
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0.1547311967,
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0.6403818871,
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0.8618832818,
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))
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is.Equal(0.1090868377, math.Min(
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0.3943310720,
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0.1090868377,
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0.9348207729,
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0.3525527584,
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0.4359833682,
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0.7958538081,
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0.1439352569,
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0.1547311967,
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0.6403818871,
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0.8618832818,
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))
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}
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func TestPagerBox(t *testing.T) {
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is := is.New(t)
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tests := []struct {
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first uint64
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last uint64
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pos int64
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n int64
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start uint64
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count int64
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}{
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{1, 10, 0, 10, 1, 10},
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{1, 10, 0, 11, 1, 10},
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{1, 5, 0, 10, 1, 5},
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{1, 10, 4, 10, 5, 6},
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{1, 10, 5, 10, 6, 5},
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{1, 10, 0, -10, 0, 0},
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{1, 10, 1, -1, 2, -1},
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{1, 10, 1, -10, 2, -1},
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{1, 10, -1, 1, 10, 1},
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{1, 10, -2, 10, 9, 2},
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{1, 10, -1, -1, 10, -1},
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{1, 10, -2, -10, 9, -9},
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{1, 10, 0, -10, 0, 0},
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{1, 10, 10, 10, 0, 0},
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{1, 10, 0, AllEvents, 1, 10},
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{1, 10, -1, -AllEvents, 10, -10},
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{5, 10, 0, 1, 5, 1},
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}
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for _, tt := range tests {
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start, count := math.PagerBox(tt.first, tt.last, tt.pos, tt.n)
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if count > 0 {
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t.Log(tt, "|", start, count, int64(start)+count-1)
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} else {
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t.Log(tt, "|", start, count, int64(start)+count+1)
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}
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is.Equal(start, tt.start)
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is.Equal(count, tt.count)
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}
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}
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const AppendOnly = ^uint64(0)
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const AllEvents = int64(AppendOnly >> 1)
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