require File.expand_path(File.dirname(__FILE__) + '/spec_helper') describe AviGlitch do it 'should raise an error against unsupported files' do lambda { avi = AviGlitch.open __FILE__ }.should raise_error(RuntimeError) end it 'should return AviGlitch::Base object through the method #open' do avi = AviGlitch.open @in avi.should be_kind_of AviGlitch::Base end it 'should save the same file when nothing is changed' do avi = AviGlitch.open @in avi.glitch do |d| d end avi.output @out FileUtils.cmp(@in, @out).should be true end it 'can glitch each keyframe' do avi = AviGlitch.open @in n = 0 avi.glitch :keyframe do |kf| n += 1 kf.slice(10..kf.size) end avi.output @out i_size = File.stat(@in).size o_size = File.stat(@out).size o_size.should == i_size - (10 * n) AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'can glitch each keyframe with index' do avi = AviGlitch.open @in a_size = 0 avi.glitch :keyframe do |f| a_size += 1 f end b_size = 0 avi.glitch_with_index :keyframe do |kf, idx| b_size += 1 if idx < 25 kf.slice(10..kf.size) else kf end end expect(a_size).to be == b_size avi.output @out i_size = File.stat(@in).size o_size = File.stat(@out).size o_size.should == i_size - (10 * 25) AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'should have some alias methods' do lambda { avi = AviGlitch.open @in avi.write @out }.should_not raise_error AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'can glitch with :*frames instead of :*frame' do avi = AviGlitch.open @in count = 0 avi.glitch :keyframes do |kf| count += 1 kf end avi.close count.should > 0 end it 'should close file when output' do avi = AviGlitch.open @in avi.output @out lambda { avi.glitch do |f| f end }.should raise_error(IOError) end it 'can explicit close file' do avi = AviGlitch.open @in avi.close lambda { avi.glitch do |f| f end }.should raise_error(IOError) end it 'should offer one liner style coding' do lambda { AviGlitch.open(@in).glitch(:keyframe){|d| '0' * d.size}.output(@out) }.should_not raise_error AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'should not raise error in multiple glitches' do lambda { avi = AviGlitch.open @in avi.glitch(:keyframe) do |d| d.gsub(/\d/, '') end avi.glitch(:keyframe) do |d| nil end avi.glitch(:audioframe) do |d| d * 2 end avi.output @out }.should_not raise_error AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'can work with another frames instance' do a = AviGlitch.open @in a.glitch :keyframe do |d| nil end a.output(@out.to_s + 'x.avi') b = AviGlitch.open @in c = AviGlitch.open(@out.to_s + 'x.avi') b.frames = c.frames b.output @out AviGlitch::Base.surely_formatted?(@out, true).should be true end it 'should mutate keyframes into deltaframes' do a = AviGlitch.open @in a.mutate_keyframes_into_deltaframes! a.output @out a = AviGlitch.open @out a.frames.each do |f| f.is_keyframe?.should be false end a = AviGlitch.open @in a.mutate_keyframes_into_deltaframes! 0..50 a.output @out a = AviGlitch.open @out a.frames.each_with_index do |f, i| if i <= 50 f.is_keyframe?.should be false end end end it 'should check if keyframes exist.' do a = AviGlitch.open @in a.has_keyframe?.should be true a.glitch :keyframe do |f| nil end a.has_keyframe?.should be false end it 'should #remove_all_keyframes!' do a = AviGlitch.open @in a.has_keyframe?.should be true a.remove_all_keyframes! a.has_keyframe?.should be false end it 'should count same number of specific frames' do a = AviGlitch.open @in dc1 = 0 dc2 = 0 a.frames.each do |f| dc1 += 1 if f.is_deltaframe? end a.glitch(:deltaframe) do |d| dc2 += 1 d end expect(dc1).to eq(dc2) end end