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Fix KLineWindow.Tail

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This commit is contained in:
なるみ 2021-05-22 05:22:38 +08:00
parent 4fde442722
commit 50d96f1276
2 changed files with 5 additions and 2 deletions
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2
pkg/types/kline.go
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@ -355,7 +355,7 @@ func (k KLineWindow) Tail(size int) KLineWindow {
}
win := make(KLineWindow, size)
copy(win, k[length-1-size:])
copy(win, k[length-size:])
return win
}

5
pkg/types/kline_test.go
View File

@ -9,17 +9,20 @@ import (
func TestKLineWindow_Tail(t *testing.T) {
var win = KLineWindow{
{Open: 11600.0, Close: 11600.0, High: 11600.0, Low: 11600.0},
{Open: 11600.0, Close: 11600.0, High: 11600.0, Low: 11600.0},
{Open: 11700.0, Close: 11700.0, High: 11700.0, Low: 11700.0},
}
var win2 = win.Tail(1)
assert.Len(t, win2, 1)
assert.ElementsMatch(t, win2, win[1:])
var win3 = win.Tail(2)
assert.Len(t, win3, 2)
assert.ElementsMatch(t, win3, win)
var win4 = win.Tail(3)
assert.Len(t, win4, 2)
assert.ElementsMatch(t, win4, win)
}
func TestKLineWindow_Truncate(t *testing.T) {