File: stats_test.go

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package accounting

import (
	"fmt"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
)

func TestETA(t *testing.T) {
	for _, test := range []struct {
		size, total int64
		rate        float64
		wantETA     time.Duration
		wantOK      bool
		wantString  string
	}{
		{size: 0, total: 100, rate: 1.0, wantETA: 100 * time.Second, wantOK: true, wantString: "1m40s"},
		{size: 50, total: 100, rate: 1.0, wantETA: 50 * time.Second, wantOK: true, wantString: "50s"},
		{size: 100, total: 100, rate: 1.0, wantETA: 0 * time.Second, wantOK: true, wantString: "0s"},
		{size: -1, total: 100, rate: 1.0, wantETA: 0, wantOK: false, wantString: "-"},
		{size: 200, total: 100, rate: 1.0, wantETA: 0, wantOK: false, wantString: "-"},
		{size: 10, total: -1, rate: 1.0, wantETA: 0, wantOK: false, wantString: "-"},
		{size: 10, total: 20, rate: 0.0, wantETA: 0, wantOK: false, wantString: "-"},
		{size: 10, total: 20, rate: -1.0, wantETA: 0, wantOK: false, wantString: "-"},
		{size: 0, total: 0, rate: 1.0, wantETA: 0, wantOK: false, wantString: "-"},
	} {
		t.Run(fmt.Sprintf("size=%d/total=%d/rate=%f", test.size, test.total, test.rate), func(t *testing.T) {
			gotETA, gotOK := eta(test.size, test.total, test.rate)
			assert.Equal(t, test.wantETA, gotETA)
			assert.Equal(t, test.wantOK, gotOK)
			gotString := etaString(test.size, test.total, test.rate)
			assert.Equal(t, test.wantString, gotString)
		})
	}
}

func TestPercentage(t *testing.T) {
	assert.Equal(t, percent(0, 1000), "0%")
	assert.Equal(t, percent(1, 1000), "0%")
	assert.Equal(t, percent(9, 1000), "1%")
	assert.Equal(t, percent(500, 1000), "50%")
	assert.Equal(t, percent(1000, 1000), "100%")
	assert.Equal(t, percent(1E8, 1E9), "10%")
	assert.Equal(t, percent(1E8, 1E9), "10%")
	assert.Equal(t, percent(0, 0), "-")
	assert.Equal(t, percent(100, -100), "-")
	assert.Equal(t, percent(-100, 100), "-")
	assert.Equal(t, percent(-100, -100), "-")
}