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fixedpoint: add sort interface support on fixedpoint
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@ -5,3 +5,20 @@ type Slice []Value
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func (s Slice) Reduce(init Value, reducer Reducer) Value {
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return Reduce(s, init, reducer)
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}
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// Defaults to ascending sort
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func (s Slice) Len() int { return len(s) }
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func (s Slice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (s Slice) Less(i, j int) bool { return s[i].Compare(s[j]) < 0 }
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type Ascending []Value
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func (s Ascending) Len() int { return len(s) }
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func (s Ascending) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (s Ascending) Less(i, j int) bool { return s[i].Compare(s[j]) < 0 }
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type Descending []Value
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func (s Descending) Len() int { return len(s) }
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func (s Descending) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (s Descending) Less(i, j int) bool { return s[i].Compare(s[j]) > 0 }
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35
pkg/fixedpoint/slice_test.go
Normal file
35
pkg/fixedpoint/slice_test.go
Normal file
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@ -0,0 +1,35 @@
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package fixedpoint
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import (
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"sort"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestSortInterface(t *testing.T) {
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slice := Slice{
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NewFromInt(7),
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NewFromInt(3),
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NewFromInt(1),
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NewFromInt(2),
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NewFromInt(5),
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}
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sort.Sort(slice)
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assert.Equal(t, "1", slice[0].String())
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assert.Equal(t, "2", slice[1].String())
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assert.Equal(t, "3", slice[2].String())
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assert.Equal(t, "5", slice[3].String())
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sort.Sort(Descending(slice))
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assert.Equal(t, "7", slice[0].String())
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assert.Equal(t, "5", slice[1].String())
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assert.Equal(t, "3", slice[2].String())
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assert.Equal(t, "2", slice[3].String())
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sort.Sort(Ascending(slice))
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assert.Equal(t, "1", slice[0].String())
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assert.Equal(t, "2", slice[1].String())
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assert.Equal(t, "3", slice[2].String())
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assert.Equal(t, "5", slice[3].String())
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}
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