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89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
// Copyright © 2025 Hardcore Engineering Inc.
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//
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// Licensed under the Eclipse Public License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License. You may
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// obtain a copy of the License at https://www.eclipse.org/legal/epl-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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//
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package transcoding_test
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import (
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"sync"
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"sync/atomic"
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"testing"
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"github.com/huly-stream/internal/pkg/transcoding"
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"github.com/stretchr/testify/require"
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)
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func TestLimiter(t *testing.T) {
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limiter := transcoding.NewLimiter(10)
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t.Run("Initial capacity", func(t *testing.T) {
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require.Equal(t, int64(10), limiter.GetCapacity())
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})
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t.Run("Successful consume", func(t *testing.T) {
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success := limiter.TryConsume(5)
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require.True(t, success)
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require.Equal(t, int64(5), limiter.GetCapacity())
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})
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t.Run("Failed consume", func(t *testing.T) {
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success := limiter.TryConsume(10)
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require.False(t, success)
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require.Equal(t, int64(5), limiter.GetCapacity())
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})
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t.Run("Return capacity", func(t *testing.T) {
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limiter.ReturnCapacity(3)
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require.Equal(t, int64(8), limiter.GetCapacity())
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})
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t.Run("Exceeding max capacity", func(t *testing.T) {
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limiter.ReturnCapacity(10)
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require.Equal(t, int64(10), limiter.GetCapacity())
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})
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}
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func TestLimiterConcurrency(t *testing.T) {
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limiter := transcoding.NewLimiter(10)
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var wg sync.WaitGroup
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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limiter.TryConsume(2)
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}()
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}
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wg.Wait()
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require.LessOrEqual(t, limiter.GetCapacity(), int64(0))
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}
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func TestLimiterCAS(t *testing.T) {
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limiter := transcoding.NewLimiter(10)
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var successful int64
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var wg sync.WaitGroup
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for i := 0; i < 1000; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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if limiter.TryConsume(1) {
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atomic.AddInt64(&successful, 1)
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}
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}()
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}
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wg.Wait()
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require.Equal(t, int64(10), successful)
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require.Equal(t, int64(0), limiter.GetCapacity())
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}
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