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Updated tests to do both rational and non-rational, since
fixing a rational bug was so huge.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| $:.unshift(File.expand_path(File.join(File.dirname(__FILE__), 'lib'))) | ||
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| require 'quantity/dimension' | ||
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| describe Quantity::Dimension do | ||
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| # We use these for testing dimension. the systems are tested in a separate spec. | ||
| # we'll be using these for the rest of the specs | ||
| before(:each) do | ||
| @length = Quantity::Dimension.for(:length) | ||
| @mass = Quantity::Dimension.for(:mass) | ||
| @area = Quantity::Dimension.for(:area) | ||
| @accel = Quantity::Dimension.for(:acceleration) | ||
| @force = Quantity::Dimension.for(:force) | ||
| @time = Quantity::Dimension.for(:time) | ||
| end | ||
|
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| it "should be creatable and internd with the DSL" do | ||
| class Length < Quantity::Dimension ; end | ||
| class Area < Quantity::Dimension ; end | ||
| class Acceleration < Quantity::Dimension ; end | ||
| Length.add_dimension :length, :width | ||
| Area.add_dimension :'length^2' | ||
| Acceleration.add_dimension :'length/time^2' | ||
| Quantity::Dimension.add_dimension :mass | ||
| Quantity::Dimension.add_dimension :time | ||
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| length = Quantity::Dimension.for(:length) | ||
| mass = Quantity::Dimension.for(:mass) | ||
| area = Quantity::Dimension.for(:area) | ||
| accel = Quantity::Dimension.for(:acceleration) | ||
| time = Quantity::Dimension.for(:time) | ||
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| ml = Quantity::Dimension.add_dimension mass * length | ||
| t2 = Quantity::Dimension.add_dimension time**2 | ||
| Quantity::Dimension.add_dimension ml / t2, :force | ||
| #Quantity::Dimension.add_dimension :'length*mass/time^2', :force | ||
| force = Quantity::Dimension.for(:'length*mass/time^2') | ||
| force2 = Quantity::Dimension.for(:'mass*length/time^2') | ||
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| length.to_s.should == "length" | ||
| length.class.should == Length | ||
| length.name.should == :length | ||
| area.to_s.should == "area" | ||
| area.name.should == :area | ||
| area.class.should == Area | ||
| area.string_form.should == 'length^2' | ||
| accel.class.should == Acceleration | ||
| accel.to_s.should == "acceleration" | ||
| accel.name.should == :acceleration | ||
| mass.to_s.should == "mass" | ||
| mass.name.should == :mass | ||
| mass.class.should == Quantity::Dimension | ||
| Quantity::Dimension.for(:width).should equal(length) | ||
| force.name.should == :force # note normalized reordering | ||
| force.to_s.should == "force" # note normalized reordering | ||
| force.string_form.should == "length*mass/time^2" # note normalized reordering | ||
| force.class.should == Quantity::Dimension | ||
| force2.should equal(force) | ||
| end | ||
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| it "should have a name" do | ||
| @length.name.should == :length | ||
| @force.name.should == :force | ||
| end | ||
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| it "should track numerators and denominators" do | ||
| @length.numerators.first.dimension.should == :length | ||
| @length.numerators.first.power.should == 1 | ||
| @force.numerators.first.dimension.should == :length | ||
| @force.numerators.first.power== 1 | ||
| @force.numerators[1].dimension.should == :mass | ||
| @force.numerators[1].power== 1 | ||
| @force.denominators.first.dimension.should == :time | ||
| @force.denominators.first.power.should == 2 | ||
| end | ||
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| it "should provide a vaguely parsable string format" do | ||
| component = Quantity::Dimension::DimensionComponent.new(:length,3) | ||
| component2 = Quantity::Dimension::DimensionComponent.new(:length,2) | ||
| component3 = Quantity::Dimension::DimensionComponent.new(:time,2) | ||
| component4 = Quantity::Dimension::DimensionComponent.new(:length,5) | ||
| Quantity::Dimension.string_form([component],[]).should=='length^3' | ||
| Quantity::Dimension.string_form([component,component2],[]).should=='length^3*length^2' | ||
| Quantity::Dimension.string_form([component,component2],[component3]).should=='length^3*length^2/time^2' | ||
| Quantity::Dimension.parse_string_form('length^3*length^2/time^2').inspect.should == [[component4],[component3]].inspect | ||
| end | ||
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| it "should multiply dimensions" do | ||
| volume = @area * @length | ||
| volume.numerators.first.dimension.should == :length | ||
| volume.numerators.first.power.should == 3 | ||
| area2 = @length * @length | ||
| area2.numerators.first.dimension.should == :length | ||
| area2.numerators.first.power.should == 2 | ||
| area2.should equal(@area) | ||
| force_top = @mass * @length | ||
| force_top.numerators.first.dimension.should == :length | ||
| force_top.numerators.first.power.should == 1 | ||
| force_top.numerators.length.should == 2 | ||
| force_top.numerators[1].dimension.should == :mass | ||
| force_top.name.should == :"length*mass" | ||
| end | ||
|
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| it "should divide dimensions" do | ||
| speed = @length / @time | ||
| speed.name.should == :'length/time' | ||
| speed.numerators.first.dimension.should == :length | ||
| speed.numerators.first.power.should == 1 | ||
| speed.denominators.first.power.should == 1 | ||
| speed.denominators.first.dimension.should == :time | ||
| speed2 = @length / @time | ||
| speed.should equal(speed2) | ||
| accel = speed / @time | ||
| accel.numerators.first.dimension.should == :length | ||
| accel.numerators.first.power.should == 1 | ||
| accel.denominators.first.power.should == 2 | ||
| accel.denominators.first.dimension.should == :time | ||
| accel.should equal(@accel) | ||
| force = @accel * @mass | ||
| force.numerators.first.dimension.should == :length | ||
| force.numerators.first.power.should == 1 | ||
| force.numerators[1].dimension.should == :mass | ||
| force.numerators[1].power.should == 1 | ||
| force.denominators.first.power.should == 2 | ||
| force.denominators.first.dimension.should == :time | ||
| @force.should equal(force) | ||
| accel = @force / @mass | ||
| accel.numerators.first.dimension.should == :length | ||
| accel.numerators.first.power.should == 1 | ||
| accel.denominators.first.power.should == 2 | ||
| accel.denominators.first.dimension.should == :time | ||
| @accel.should equal(accel) | ||
| area = @length * @length | ||
| area.numerators.first.dimension.should == :length | ||
| area.numerators.first.power.should == 2 | ||
| volume = @area * @length | ||
| volume.numerators.first.dimension.should == :length | ||
| volume.numerators.first.power.should == 3 | ||
| area = volume / @length | ||
| area.numerators.first.dimension.should == :length | ||
| area.numerators.first.power.should == 2 | ||
| area.should equal(@area) | ||
| end | ||
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| it "should allow exponentiation" do | ||
| (@length**3).should == @length * @length * @length | ||
| end | ||
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| # this is useful for testing | ||
| it "should allow resetting the world" do | ||
| Quantity::Dimension.__reset! | ||
| x = Quantity::Dimension.for(:length) | ||
| x.should == nil | ||
| end | ||
| end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,156 +1,6 @@ | ||
| $:.unshift(File.expand_path(File.join(File.dirname(__FILE__), 'lib'))) | ||
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| require 'quantity/dimension' | ||
| load 'dimension-real.spec' | ||
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| describe Quantity::Dimension do | ||
|
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| # We use these for testing dimension. the systems are tested in a separate spec. | ||
| # we'll be using these for the rest of the specs | ||
| before(:each) do | ||
| @length = Quantity::Dimension.for(:length) | ||
| @mass = Quantity::Dimension.for(:mass) | ||
| @area = Quantity::Dimension.for(:area) | ||
| @accel = Quantity::Dimension.for(:acceleration) | ||
| @force = Quantity::Dimension.for(:force) | ||
| @time = Quantity::Dimension.for(:time) | ||
| end | ||
| require 'rational' | ||
|
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| it "should be creatable and internd with the DSL" do | ||
| class Length < Quantity::Dimension ; end | ||
| class Area < Quantity::Dimension ; end | ||
| class Acceleration < Quantity::Dimension ; end | ||
| Length.add_dimension :length, :width | ||
| Area.add_dimension :'length^2' | ||
| Acceleration.add_dimension :'length/time^2' | ||
| Quantity::Dimension.add_dimension :mass | ||
| Quantity::Dimension.add_dimension :time | ||
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| length = Quantity::Dimension.for(:length) | ||
| mass = Quantity::Dimension.for(:mass) | ||
| area = Quantity::Dimension.for(:area) | ||
| accel = Quantity::Dimension.for(:acceleration) | ||
| time = Quantity::Dimension.for(:time) | ||
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| ml = Quantity::Dimension.add_dimension mass * length | ||
| t2 = Quantity::Dimension.add_dimension time**2 | ||
| Quantity::Dimension.add_dimension ml / t2, :force | ||
| #Quantity::Dimension.add_dimension :'length*mass/time^2', :force | ||
| force = Quantity::Dimension.for(:'length*mass/time^2') | ||
| force2 = Quantity::Dimension.for(:'mass*length/time^2') | ||
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| length.to_s.should == "length" | ||
| length.class.should == Length | ||
| length.name.should == :length | ||
| area.to_s.should == "area" | ||
| area.name.should == :area | ||
| area.class.should == Quantity::Dimension::Area | ||
| area.string_form.should == 'length^2' | ||
| accel.class.should == Acceleration | ||
| accel.to_s.should == "acceleration" | ||
| accel.name.should == :acceleration | ||
| mass.to_s.should == "mass" | ||
| mass.name.should == :mass | ||
| mass.class.should == Quantity::Dimension | ||
| Quantity::Dimension.for(:width).should equal(length) | ||
| force.name.should == :force # note normalized reordering | ||
| force.to_s.should == "force" # note normalized reordering | ||
| force.string_form.should == "length*mass/time^2" # note normalized reordering | ||
| force.class.should == Quantity::Dimension | ||
| force2.should equal(force) | ||
| end | ||
|
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| it "should have a name" do | ||
| @length.name.should == :length | ||
| @force.name.should == :force | ||
| end | ||
|
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| it "should track numerators and denominators" do | ||
| @length.numerators.first.dimension.should == :length | ||
| @length.numerators.first.power.should == 1 | ||
| @force.numerators.first.dimension.should == :length | ||
| @force.numerators.first.power== 1 | ||
| @force.numerators[1].dimension.should == :mass | ||
| @force.numerators[1].power== 1 | ||
| @force.denominators.first.dimension.should == :time | ||
| @force.denominators.first.power.should == 2 | ||
| end | ||
|
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| it "should provide a vaguely parsable string format" do | ||
| component = Quantity::Dimension::DimensionComponent.new(:length,3) | ||
| component2 = Quantity::Dimension::DimensionComponent.new(:length,2) | ||
| component3 = Quantity::Dimension::DimensionComponent.new(:time,2) | ||
| component4 = Quantity::Dimension::DimensionComponent.new(:length,5) | ||
| Quantity::Dimension.string_form([component],[]).should=='length^3' | ||
| Quantity::Dimension.string_form([component,component2],[]).should=='length^3*length^2' | ||
| Quantity::Dimension.string_form([component,component2],[component3]).should=='length^3*length^2/time^2' | ||
| Quantity::Dimension.parse_string_form('length^3*length^2/time^2').inspect.should == [[component4],[component3]].inspect | ||
| end | ||
|
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| it "should multiply dimensions" do | ||
| volume = @area * @length | ||
| volume.numerators.first.dimension.should == :length | ||
| volume.numerators.first.power.should == 3 | ||
| area2 = @length * @length | ||
| area2.numerators.first.dimension.should == :length | ||
| area2.numerators.first.power.should == 2 | ||
| area2.should equal(@area) | ||
| force_top = @mass * @length | ||
| force_top.numerators.first.dimension.should == :length | ||
| force_top.numerators.first.power.should == 1 | ||
| force_top.numerators.length.should == 2 | ||
| force_top.numerators[1].dimension.should == :mass | ||
| force_top.name.should == :"length*mass" | ||
| end | ||
|
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| it "should divide dimensions" do | ||
| speed = @length / @time | ||
| speed.name.should == :'length/time' | ||
| speed.numerators.first.dimension.should == :length | ||
| speed.numerators.first.power.should == 1 | ||
| speed.denominators.first.power.should == 1 | ||
| speed.denominators.first.dimension.should == :time | ||
| speed2 = @length / @time | ||
| speed.should equal(speed2) | ||
| accel = speed / @time | ||
| accel.numerators.first.dimension.should == :length | ||
| accel.numerators.first.power.should == 1 | ||
| accel.denominators.first.power.should == 2 | ||
| accel.denominators.first.dimension.should == :time | ||
| accel.should equal(@accel) | ||
| force = @accel * @mass | ||
| force.numerators.first.dimension.should == :length | ||
| force.numerators.first.power.should == 1 | ||
| force.numerators[1].dimension.should == :mass | ||
| force.numerators[1].power.should == 1 | ||
| force.denominators.first.power.should == 2 | ||
| force.denominators.first.dimension.should == :time | ||
| @force.should equal(force) | ||
| accel = @force / @mass | ||
| accel.numerators.first.dimension.should == :length | ||
| accel.numerators.first.power.should == 1 | ||
| accel.denominators.first.power.should == 2 | ||
| accel.denominators.first.dimension.should == :time | ||
| @accel.should equal(accel) | ||
| area = @length * @length | ||
| area.numerators.first.dimension.should == :length | ||
| area.numerators.first.power.should == 2 | ||
| volume = @area * @length | ||
| volume.numerators.first.dimension.should == :length | ||
| volume.numerators.first.power.should == 3 | ||
| area = volume / @length | ||
| area.numerators.first.dimension.should == :length | ||
| area.numerators.first.power.should == 2 | ||
| area.should equal(@area) | ||
| end | ||
|
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| it "should allow exponentiation" do | ||
| (@length**3).should == @length * @length * @length | ||
| end | ||
|
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| # this is useful for testing | ||
| it "should allow resetting the world" do | ||
| Quantity::Dimension.__reset! | ||
| x = Quantity::Dimension.for(:length) | ||
| x.should == nil | ||
| end | ||
| end | ||
| load 'dimension-real.spec' |
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