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%") }