blob: 13916ff2475cdf8cba65b41cdcad38af5cc31d20 [file] [log] [blame]
// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package benchmath
import (
"math"
"testing"
)
func TestSummaryFormat(t *testing.T) {
check := func(center, lo, hi float64, want string) {
t.Helper()
s := Summary{Center: center, Lo: lo, Hi: hi}
got := s.PctRangeString()
if got != want {
t.Errorf("for %v CI [%v, %v], got %s, want %s", center, lo, hi, got, want)
}
}
inf := math.Inf(1)
check(1, 0.5, 1.1, "50%")
check(1, 0.9, 1.5, "50%")
check(1, 1, 1, "0%")
check(-1, -0.5, -1.1, "50%")
check(-1, -0.9, -1.5, "50%")
check(-1, -1, -1, "0%")
check(1, -inf, 1, "∞")
check(1, 1, inf, "∞")
check(1, -1, 1, "?")
check(1, -1, -1, "?")
check(-1, -1, 1, "?")
check(-1, 1, -1, "?")
check(0, -1, 1, "?")
check(0, 0, 0, "0%")
}
func TestComparisonFormat(t *testing.T) {
check := func(p float64, n1, n2 int, want string) {
t.Helper()
got := Comparison{P: p, N1: n1, N2: n2}.String()
if got != want {
t.Errorf("for %v,%v,%v, got %s, want %s", p, n1, n2, got, want)
}
}
check(0.5, 1, 2, "p=0.500 n=1+2")
check(0.5, 2, 2, "p=0.500 n=2")
check(0, 1, 2, "n=1+2")
check(0, 2, 2, "n=2")
checkD := func(p, old, new, alpha float64, want string) {
got := Comparison{P: p, Alpha: alpha}.FormatDelta(old, new)
if got != want {
t.Errorf("for p=%v %v=>%v @%v, got %s, want %s", p, old, new, alpha, got, want)
}
}
checkD(0.5, 0, 0, 0.05, "~")
checkD(0.01, 0, 0, 0.05, "0.00%")
checkD(0.01, 1, 1, 0.05, "0.00%")
checkD(0.01, 0, 1, 0.05, "?")
checkD(0.01, 1, 1.5, 0.05, "+50.00%")
checkD(0.01, 1, 0.5, 0.05, "-50.00%")
}