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// Copyright 2014 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 main
import (
"reflect"
"testing"
"golang.org/x/tools/benchmark/parse"
)
func TestSelectBest(t *testing.T) {
have := parse.Set{
"Benchmark1": []*parse.Benchmark{
{
Name: "Benchmark1",
N: 10, NsPerOp: 100, Measured: parse.NsPerOp,
Ord: 0,
},
{
Name: "Benchmark1",
N: 10, NsPerOp: 50, Measured: parse.NsPerOp,
Ord: 3,
},
},
"Benchmark2": []*parse.Benchmark{
{
Name: "Benchmark2",
N: 10, NsPerOp: 60, Measured: parse.NsPerOp,
Ord: 1,
},
{
Name: "Benchmark2",
N: 10, NsPerOp: 500, Measured: parse.NsPerOp,
Ord: 2,
},
},
}
want := parse.Set{
"Benchmark1": []*parse.Benchmark{
{
Name: "Benchmark1",
N: 10, NsPerOp: 50, Measured: parse.NsPerOp,
Ord: 0,
},
},
"Benchmark2": []*parse.Benchmark{
{
Name: "Benchmark2",
N: 10, NsPerOp: 60, Measured: parse.NsPerOp,
Ord: 1,
},
},
}
selectBest(have)
if !reflect.DeepEqual(want, have) {
t.Errorf("filtered bench set incorrectly, want %v have %v", want, have)
}
}
func TestFormatNs(t *testing.T) {
tests := []struct {
input float64
expected string
}{
{input: 0, expected: "0.00"},
{input: 0.2, expected: "0.20"},
{input: 2, expected: "2.00"},
{input: 2.2, expected: "2.20"},
{input: 4, expected: "4.00"},
{input: 16, expected: "16.0"},
{input: 16.08, expected: "16.1"},
{input: 128, expected: "128"},
{input: 256.2, expected: "256"},
}
for _, tt := range tests {
actual := formatNs(tt.input)
if actual != tt.expected {
t.Fatalf("%f. got %q, want %q", tt.input, actual, tt.expected)
}
}
}
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