PortAudio.jl/test/runtests.jl

#!/usr/bin/env julia

using BaseTestNext
using PortAudio
using SampleTypes

# these test are currently set up to run on OSX

@testset "PortAudio Tests" begin
    @testset "Reports version" begin
        io = IOBuffer()
        PortAudio.versioninfo(io)
        result = takebuf_string(io)
        # make sure this is the same version I tested with
        @test result ==
            """PortAudio V19-devel (built Aug  6 2014 17:54:39)
            Version Number: 1899
            """
    end
    @testset "Open Default Device" begin
        devs = PortAudio.devices()
        source = PortAudioSource()
        sink = PortAudioSink()
        buf = read(source, 0.1s)
        @test size(buf) == (round(Int, 0.1s * samplerate(source)), nchannels(source))
        write(sink, buf)
        close(source)
        close(sink)
    end
    @testset "Open Device by name" begin
        devs = PortAudio.devices()
        source = PortAudioSource("Built-in Microph")
        sink = PortAudioSink("Built-in Output")
        buf = read(source, 0.1s)
        @test size(buf) == (round(Int, 0.1s * samplerate(source)), nchannels(source))
        write(sink, buf)
        io = IOBuffer()
        show(io, source)
        @test takebuf_string(io) ==
            """PortAudio.PortAudioSource{Float32,SIUnits.SIQuantity{Int64,0,0,-1,0,0,0,0,0,0}}("Built-in Microph")
               2 channels sampled at 48000 s⁻¹"""
        show(io, sink)
        @test takebuf_string(io) ==
            """PortAudio.PortAudioSink{Float32,SIUnits.SIQuantity{Int64,0,0,-1,0,0,0,0,0,0}}("Built-in Output")
            2 channels sampled at 48000 s⁻¹"""
        close(source)
        close(sink)
    end
    @testset "Error on wrong name" begin
        @test_throws ErrorException PortAudioSource("foobarbaz")
        @test_throws ErrorException PortAudioSink("foobarbaz")
    end
    # no way to check that the right data is actually getting read or written here,
    # but at least it's not crashing.
    @testset "Queued Writing" begin
        sink = PortAudioSink()
        buf = SampleBuf(rand(eltype(sink), 48000, nchannels(sink))*0.1, samplerate(sink))
        t1 = @async write(sink, buf)
        t2 = @async write(sink, buf)
        @test wait(t1) == 48000
        @test wait(t2) == 48000
        close(sink)
    end
    @testset "Queued Reading" begin
        source = PortAudioSource()
        buf = SampleBuf(rand(eltype(source), 48000, nchannels(source)), samplerate(source))
        t1 = @async read!(source, buf)
        t2 = @async read!(source, buf)
        @test wait(t1) == 48000
        @test wait(t2) == 48000
        close(source)
    end
end