44 lines
567 B
Go
44 lines
567 B
Go
package ratecounter
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import (
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"sync"
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"testing"
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)
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func TestCounter(t *testing.T) {
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var c Counter
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check := func(expected int64) {
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val := c.Value()
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if val != expected {
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t.Error("Expected ", val, " to equal ", expected)
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}
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}
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check(0)
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c.Incr(1)
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check(1)
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c.Incr(9)
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check(10)
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// Concurrent usage
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wg := &sync.WaitGroup{}
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wg.Add(3)
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for i := 1; i <= 3; i++ {
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go func(val int64) {
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c.Incr(val)
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wg.Done()
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}(int64(i))
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}
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wg.Wait()
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check(16)
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}
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func BenchmarkCounter(b *testing.B) {
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var c Counter
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for i := 0; i < b.N; i++ {
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c.Incr(1)
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}
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}
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