mirror of
https://github.com/bluenviron/mediamtx
synced 2025-01-11 17:39:51 +00:00
73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
package mpegtstimedec
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import (
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestNegativeDiff(t *testing.T) {
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d := New(64523434)
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ts := d.Decode(64523434 - 90000)
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require.Equal(t, -1*time.Second, ts)
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ts = d.Decode(64523434)
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require.Equal(t, time.Duration(0), ts)
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ts = d.Decode(64523434 + 90000*2)
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require.Equal(t, 2*time.Second, ts)
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ts = d.Decode(64523434 + 90000)
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require.Equal(t, 1*time.Second, ts)
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}
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func TestOverflow(t *testing.T) {
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d := New(0x1FFFFFFFF - 20)
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i := int64(0x1FFFFFFFF - 20)
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secs := time.Duration(0)
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const stride = 150
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lim := int64(uint64(0x1FFFFFFFF - (stride * 90000)))
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for n := 0; n < 100; n++ {
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// overflow
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i += 90000 * stride
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secs += stride
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ts := d.Decode(i)
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require.Equal(t, secs*time.Second, ts)
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// reach 2^32 slowly
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secs += stride
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i += 90000 * stride
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for ; i < lim; i += 90000 * stride {
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ts = d.Decode(i)
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require.Equal(t, secs*time.Second, ts)
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secs += stride
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}
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}
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}
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func TestOverflowAndBack(t *testing.T) {
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d := New(0x1FFFFFFFF - 90000 + 1)
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ts := d.Decode(0x1FFFFFFFF - 90000 + 1)
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require.Equal(t, time.Duration(0), ts)
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ts = d.Decode(90000)
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require.Equal(t, 2*time.Second, ts)
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ts = d.Decode(0x1FFFFFFFF - 90000 + 1)
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require.Equal(t, time.Duration(0), ts)
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ts = d.Decode(0x1FFFFFFFF - 90000*2 + 1)
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require.Equal(t, -1*time.Second, ts)
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ts = d.Decode(0x1FFFFFFFF - 90000 + 1)
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require.Equal(t, time.Duration(0), ts)
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ts = d.Decode(90000)
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require.Equal(t, 2*time.Second, ts)
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}
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