File: sample.test

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snack 2.2.10-dfsg1-12.1
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# Commands covered: sound sample
#

package require -exact snack 2.2

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

test sample-1.1 {sample command, get} {
  set s [snack::sound snd]
  $s length 10
  set res [$s sample 0]
  $s destroy
  set res
} 0

test sample-1.2 {sample command, set/get} {
  set s [snack::sound snd]
  $s length 10
  $s sample 9 17
  set res [$s sample 9]
  $s destroy
  set res
} 17

test sample-1.3 {sample command, index out of bounds} {
  set s [snack::sound snd]
  $s length 10
  catch {$s sample 10 17} msg
  $s destroy
  set msg
} {Index out of bounds}

test sample-1.4 {sample command, too many samples given} {
  set s [snack::sound snd]
  $s length 10
  catch {$s sample 9 17 18} msg
  $s destroy
  set msg
} {Too many samples given}

test sample-2.1 {sample command, stereo get} {
  set s [snack::sound snd -channels 2]
  $s length 10
  set res [$s sample 9]
  $s destroy
  set res
} {0 0}

test sample-2.2 {sample command, stereo get/set left channel} {
  set s [snack::sound snd -channels 2]
  $s length 10
  $s sample 9 17
  set res [$s sample 9]
  $s destroy
  set res
} {17 0}

test sample-2.3 {sample command, stereo get/set left channel using ?} {
  set s [snack::sound snd -channels 2]
  $s length 10
  $s sample 9 17 ?
  set res [$s sample 9]
  $s destroy
  set res
} {17 0}

test sample-2.4 {sample command, stereo get/set right channel} {
  set s [snack::sound snd -channels 2]
  $s length 10
  $s sample 9 ? 18
  set res [$s sample 9]
  $s destroy
  set res
} {0 18}

test sample-2.5 {sample command, stereo get/set both channels} {
  set s [snack::sound snd -channels 2]
  $s length 10
  $s sample 9 17 18
  set res [$s sample 9]
  $s destroy
  set res
} {17 18}

test sample-3.1 {sample command, get from loaded ex1.wav} {
  set s [snack::sound snd -load ex1.wav]
  set res [$s sample 0]
  $s destroy
  set res
} {1177}

test sample-3.2 {sample command, get from linked ex1.wav} {
  set s [snack::sound snd -file ex1.wav]
  set res [$s sample 0]
  $s destroy
  set res
} {1177}

test sample-4.1 {sample command, wrong # args} {
  set s [snack::sound snd]
  catch {$s sample} msg
  $s destroy
  set msg
} {wrong # args: should be "snd sample index ?val? ..."}

test sample-5.1 {sample command, float sample set/get} {
  set s [snack::sound snd -encoding float]
  $s length 10
  $s sample 9 32767.0
  set res [$s sample 9]
  $s destroy
  set res
} 32767.000000

test sample-5.2 {sample command, float sample set/get} {
  set s [snack::sound snd -encoding float -precision double]
  $s length 10
  $s sample 9 32767.0
  set res [$s sample 9]
  $s destroy
  set res
} 32767.000000000000

test sample-6.1 {sample command, 3-channel get} {
  set s [snack::sound snd -channels 3]
  $s length 10
  set res [$s sample 9]
  $s destroy
  set res
} {0 0 0}

test sample-6.2 {sample command, 3-channel get/set channel 0} {
  set s [snack::sound snd -channels 3]
  $s length 10
  $s sample 9 17
  set res [$s sample 9]
  $s destroy
  set res
} {17 0 0}

test sample-6.3 {sample command, 3-channel get/set channel 0 using ?} {
  set s [snack::sound snd -channels 3]
  $s length 10
  $s sample 9 17 ? ?
  set res [$s sample 9]
  $s destroy
  set res
} {17 0 0}

test sample-6.4 {sample command, 3-channel get/set channel 1} {
  set s [snack::sound snd -channels 3]
  $s length 10
  $s sample 9 ? 18 ?
  set res [$s sample 9]
  $s destroy
  set res
} {0 18 0}

test sample-6.5 {sample command, 3-channel get/set channel 2} {
  set s [snack::sound snd -channels 3]
  $s length 10
  $s sample 9 ? ? 19
  set res [$s sample 9]
  $s destroy
  set res
} {0 0 19}

test sample-6.6 {sample command, 3-channel get/set all channels} {
  set s [snack::sound snd -channels 3]
  $s length 10
  $s sample 9 17 18 19
  set res [$s sample 9]
  $s destroy
  set res
} {17 18 19}

test sample-7.1 {sample command, set/get with configure channels} {
  set s [snack::sound snd -channels 1]
  $s length 100
  $s sample 15 17
  $s sample 16 18
  $s sample 17 19
  $s configure -channels 3
  set res [$s sample 5]
  $s destroy
  set res
} {17 18 19}

test sample-7.2 {sample command, set/get with configure channels} {
  set s [snack::sound snd -channels 3]
  $s length 100
  $s sample 15 17 18 19
  $s configure -channels 5
  set res [$s sample 9]
  $s destroy
  set res
} {17 18 19 0 0}

test sample-8.1 {sample command, lin24 sample set/get} {
  set s [snack::sound snd -encoding lin24]
  $s length 10
  $s sample 9 32768
  $s sample 8 -8388608
  $s sample 7 8388607
  set res [$s sample 9],[$s sample 8],[$s sample 7]
  $s destroy
  set res
} 32768,-8388608,8388607

# cleanup
::tcltest::cleanupTests
return