mirror of
https://github.com/langhuihui/monibuca.git
synced 2025-12-24 13:48:04 +08:00
77 lines
2.5 KiB
Go
77 lines
2.5 KiB
Go
// Copyright 2017 Google Inc. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package measurement
|
|
|
|
import (
|
|
"math"
|
|
"testing"
|
|
)
|
|
|
|
func TestScale(t *testing.T) {
|
|
for _, tc := range []struct {
|
|
value int64
|
|
fromUnit, toUnit string
|
|
wantValue float64
|
|
wantUnit string
|
|
}{
|
|
{1, "s", "ms", 1000, "ms"},
|
|
{1, "kb", "b", 1024, "B"},
|
|
{1, "kbyte", "b", 1024, "B"},
|
|
{1, "kilobyte", "b", 1024, "B"},
|
|
{1, "mb", "kb", 1024, "kB"},
|
|
{1, "gb", "mb", 1024, "MB"},
|
|
{1024, "gb", "tb", 1, "TB"},
|
|
{1024, "tb", "pb", 1, "PB"},
|
|
{2048, "mb", "auto", 2, "GB"},
|
|
{3.1536e7, "s", "auto", 8760, "hrs"},
|
|
{-1, "s", "ms", -1000, "ms"},
|
|
{1, "foo", "count", 1, ""},
|
|
{1, "foo", "bar", 1, "bar"},
|
|
{2000, "count", "count", 2000, ""},
|
|
{2000, "count", "auto", 2000, ""},
|
|
{2000, "count", "minimum", 2000, ""},
|
|
{8e10, "nanogcu", "petagcus", 8e-14, "P*GCU"},
|
|
{1.5e10, "microGCU", "teraGCU", 1.5e-8, "T*GCU"},
|
|
{3e6, "milliGCU", "gigagcu", 3e-6, "G*GCU"},
|
|
{1000, "kilogcu", "megagcu", 1, "M*GCU"},
|
|
{2000, "GCU", "kiloGCU", 2, "k*GCU"},
|
|
{7, "megaGCU", "gcu", 7e6, "GCU"},
|
|
{5, "gigagcus", "milligcu", 5e12, "m*GCU"},
|
|
{7, "teragcus", "microGCU", 7e18, "u*GCU"},
|
|
{1, "petaGCU", "nanogcus", 1e24, "n*GCU"},
|
|
{100, "NanoGCU", "auto", 100, "n*GCU"},
|
|
{5000, "nanogcu", "auto", 5, "u*GCU"},
|
|
{3000, "MicroGCU", "auto", 3, "m*GCU"},
|
|
{4000, "MilliGCU", "auto", 4, "GCU"},
|
|
{4000, "GCU", "auto", 4, "k*GCU"},
|
|
{5000, "KiloGCU", "auto", 5, "M*GCU"},
|
|
{6000, "MegaGCU", "auto", 6, "G*GCU"},
|
|
{7000, "GigaGCU", "auto", 7, "T*GCU"},
|
|
{8000, "TeraGCU", "auto", 8, "P*GCU"},
|
|
{9000, "PetaGCU", "auto", 9000, "P*GCU"},
|
|
} {
|
|
if gotValue, gotUnit := Scale(tc.value, tc.fromUnit, tc.toUnit); !floatEqual(gotValue, tc.wantValue) || gotUnit != tc.wantUnit {
|
|
t.Errorf("Scale(%d, %q, %q) = (%g, %q), want (%g, %q)",
|
|
tc.value, tc.fromUnit, tc.toUnit, gotValue, gotUnit, tc.wantValue, tc.wantUnit)
|
|
}
|
|
}
|
|
}
|
|
|
|
func floatEqual(a, b float64) bool {
|
|
diff := math.Abs(a - b)
|
|
avg := (math.Abs(a) + math.Abs(b)) / 2
|
|
return diff/avg < 0.0001
|
|
}
|