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require File.expand_path(File.dirname(__FILE__)+"/spec_helper.rb")
describe Rubyvis::Scale::Log do
if Rubyvis::JohnsonLoader.available?
context "direct protovis API comparison" do
before(:all) do
@rt= Rubyvis::JohnsonLoader.new("/data/LogScale.js").runtime
end
before do
@h=280
@h_dom=1000
@y = Rubyvis.Scale.log(1, @h_dom).range(1,@h)
@rt[:h_dom] = @h_dom
@rt[:h] = @h
@y_js=@rt.evaluate("y=pv.Scale.log(1, h_dom).range(1,h)")
@v1,@v2,@v3=rand()+1,rand()+3,rand()+5
@rt[:v1]=@v1
@rt[:v2]=@v2
@rt[:v3]=@v3
end
it "domain() implemented equally" do
@y.domain(@v1)
@rt.evaluate("y.domain(v1)")
@y.domain.should==@rt.evaluate("y.domain()").to_a
@y.domain(@v1,@v2,@v3)
@rt.evaluate("y.domain(v1,v2,v3)")
@y.domain.should==@rt.evaluate("y.domain()").to_a
end
it "scale() implemented equally for complex domain" do
@y.domain(@v1,@v2,@v3)
@rt.evaluate("y.domain(v1,v2,v3)")
@y.scale(@v1+1).should==@rt.evaluate("y(v1+1)")
@y.scale(@v2+1).should==@rt.evaluate("y(v2+1)")
@y.scale(@v3+1).should==@rt.evaluate("y(v3+1)")
end
it "invert() implemented equally" do
@y.domain(@v1,@v2,@v3)
@rt.evaluate("y.domain(v1,v2,v3)")
@y.invert(@v1+1).should==@rt.evaluate("y.invert(v1+1)")
@y.invert(@v2+1).should==@rt.evaluate("y.invert(v2+1)")
@y.invert(@v3+1).should==@rt.evaluate("y.invert(v3+1)")
end
it "ticks() implemented equally for numbers" do
@y.ticks.should==@rt.evaluate("y.ticks()").to_a
end
it "nice() implemented equally" do
@y.domain(@v1,@v2)
@rt.evaluate("y.domain(v1,v2)")
@y.nice
@rt.evaluate("y.nice()")
@y.domain.should==@rt.evaluate("y.domain()").to_a
end
end
end
it "should be created as Javascript" do
h=280
y = Rubyvis.Scale.log(1, 1500)
end
before do
@h=280
@h_dom=1000
@y = Rubyvis.Scale.log(1, @h_dom).range(1,@h)
end
it "y should be a Scale" do
@y.should be_a(Rubyvis::Scale::Log)
end
it "should respond to domain" do
@y.domain.should==[1, 1000]
@y.domain(1)
@y.domain.should==[1,1]
@y.domain(1,100,300)
@y.domain.should==[1,100,300]
end
it "should respond to range" do
@y.range.should==[1, 280]
@y.range(1)
@y.range.should==[1,1]
@y.range(1,100,300)
@y.range.should==[1,100,300]
end
it "should returns correct scale" do
@y.scale(@h_dom).should==280
@y[@h_dom].should==280
val=20
@y.scale(val).should be_within( 0.001).of(121.995)
end
it "should returns correct invert" do
@y.invert(100).should be_within( 0.001).of(11.601)
@y.invert(200).should be_within( 0.001).of(137.970)
end
it "should returns correct ticks" do
t=1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900,1000
@y.ticks.should==t
end
it "should return :ArgumentError on domain that includes 0 or less" do
h=280
h_dom=1000
expect {Rubyvis.Scale.log(-1, @h_dom)}.to raise_error(ArgumentError)
end
it "should returns correct ticks with subdivisions" do
t=1,5,10,50,100,500,1000
@y.ticks(2).should==t
t=1,2.5,5,7.5,10,25,50,75,100,250,500,750,1000
@y.ticks(4).should==t
t=1,2,4,6,8,10,20,40,60,80,100,200,400,600,800,1000
@y.ticks(5).should==t
t=1,10,100,1000
@y.ticks(1).should==t
end
it "should nice nicely" do
@y.domain([0.20147987687960267, 0.996679553296417])
@y.nice
@y.domain().should==[0.1,1]
end
end
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