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1d15d5f080
* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
139 lines
3.4 KiB
Ruby
139 lines
3.4 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "Kernel.rand" do
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it "is a private method" do
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Kernel.should have_private_instance_method(:rand)
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end
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it "returns a float if no argument is passed" do
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rand.should be_kind_of(Float)
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end
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it "returns an integer for an integer argument" do
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rand(77).should be_kind_of(Integer)
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end
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it "returns an integer for a float argument greater than 1" do
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rand(1.3).should be_kind_of(Integer)
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end
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it "returns a float for an argument between -1 and 1" do
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rand(-0.999).should be_kind_of(Float)
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rand(-0.01).should be_kind_of(Float)
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rand(0).should be_kind_of(Float)
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rand(0.01).should be_kind_of(Float)
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rand(0.999).should be_kind_of(Float)
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end
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it "ignores the sign of the argument" do
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[0, 1, 2, 3].should include(rand(-4))
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end
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it "never returns a value greater or equal to 1.0 with no arguments" do
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1000.times do
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(0...1.0).should include(rand)
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end
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end
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it "never returns a value greater or equal to any passed in max argument" do
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1000.times do
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(0...100).to_a.should include(rand(100))
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end
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end
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it "calls to_int on its argument" do
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l = mock('limit')
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l.should_receive(:to_int).and_return 7
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rand l
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end
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context "given an exclusive range" do
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it "returns an Integer between the two Integers" do
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1000.times do
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x = rand(4...6)
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x.should be_kind_of(Integer)
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(4...6).should include(x)
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end
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end
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it "returns a Float between the given Integer and Float" do
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1000.times do
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x = rand(4...6.5)
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x.should be_kind_of(Float)
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(4...6.5).should include(x)
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end
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end
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it "returns a Float between the given Float and Integer" do
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1000.times do
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x = rand(3.5...6)
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x.should be_kind_of(Float)
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(3.5...6).should include(x)
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end
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end
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it "returns a Float between the two given Floats" do
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1000.times do
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x = rand(3.5...6.5)
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x.should be_kind_of(Float)
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(3.5...6.5).should include(x)
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end
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end
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end
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context "given an inclusive range" do
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it "returns an Integer between the two Integers" do
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1000.times do
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x = rand(4..6)
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x.should be_kind_of(Integer)
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(4..6).should include(x)
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end
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end
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it "returns a Float between the given Integer and Float" do
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1000.times do
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x = rand(4..6.5)
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x.should be_kind_of(Float)
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(4..6.5).should include(x)
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end
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end
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it "returns a Float between the given Float and Integer" do
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1000.times do
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x = rand(3.5..6)
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x.should be_kind_of(Float)
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(3.5..6).should include(x)
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end
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end
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it "returns a Float between the two given Floats" do
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1000.times do
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x = rand(3.5..6.5)
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x.should be_kind_of(Float)
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(3.5..6.5).should include(x)
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end
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end
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end
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it "returns a numeric for an range argument where max is < 1" do
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rand(0.25..0.75).should be_kind_of(Numeric)
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end
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it "returns nil when range is backwards" do
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rand(1..0).should be_nil
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end
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it "returns the range start/end when Float range is 0" do
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rand(1.0..1.0).should eql(1.0)
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end
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it "returns the range start/end when Integer range is 0" do
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rand(42..42).should eql(42)
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end
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end
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describe "Kernel#rand" do
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it "needs to be reviewed for spec completeness"
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end
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