test_dct.bats

#!/usr/bin/env bats
# ------------------------------------------------------------------------ #
# Copyright 2021 SPTK Working Group                                        #
#                                                                          #
# Licensed under the Apache License, Version 2.0 (the "License");          #
# you may not use this file except in compliance with the License.         #
# You may obtain a copy of the License at                                  #
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#     http://www.apache.org/licenses/LICENSE-2.0                           #
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# Unless required by applicable law or agreed to in writing, software      #
# distributed under the License is distributed on an "AS IS" BASIS,        #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
# See the License for the specific language governing permissions and      #
# limitations under the License.                                           #
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sptk3=tools/sptk/bin
sptk4=bin
tmp=test_dct

setup() {
    mkdir -p $tmp
}

teardown() {
    rm -rf $tmp
}

@test "dct: compatibility" {
    # Real
    $sptk3/nrand -l 20 | $sptk3/dct -l 8 > $tmp/1
    $sptk3/nrand -l 20 | $sptk4/dct -l 8 > $tmp/2
    run $sptk4/aeq $tmp/1 $tmp/2
    [ "$status" -eq 0 ]

    # Complex
    $sptk3/nrand -l 20 | $sptk3/dct -l 8 -I > $tmp/1
    $sptk3/nrand -l 20 | $sptk4/dct -l 8 -q 0 -o 0 > $tmp/2
    run $sptk4/aeq $tmp/1 $tmp/2
    [ "$status" -eq 0 ]

    # DFT instead of FFT
    $sptk3/nrand -l 20 | $sptk3/dct -l 10 > $tmp/1
    $sptk3/nrand -l 20 | $sptk4/dct -l 10 > $tmp/2
    run $sptk4/aeq $tmp/1 $tmp/2
    [ "$status" -eq 0 ]
}

@test "dct: reversibility" {
    $sptk3/nrand -l 16 > $tmp/1
    $sptk4/dct -l 8 $tmp/1 | $sptk4/idct -l 8 > $tmp/2
    run $sptk4/aeq $tmp/1 $tmp/2
    [ "$status" -eq 0 ]
}

@test "dct: valgrind" {
    $sptk3/nrand -l 20 > $tmp/1
    run valgrind $sptk4/dct -l 4 $tmp/1
    [ "$(echo "${lines[-1]}" | sed -r 's/.*SUMMARY: ([0-9]*) .*/\1/')" -eq 0 ]
}