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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/fixtures/classes'
extended_on :rubinius do
describe "Math.log2" do
it "returns a float" do
Math.log2(5.79).should be_close(2.53356334821451, TOLERANCE)
end
it "returns the natural logarithm of the argument" do
Math.log2(1.1).should be_close(0.137503523749935, TOLERANCE)
Math.log2(3.14).should be_close(1.6507645591169, TOLERANCE)
end
it "raises an Errno::EDOM if the argument is less than 0" do
lambda { Math.log2(-1e-15) }.should raise_error( Errno::EDOM)
end
it "raises an ArgumentError if the argument cannot be coerced with Float()" do
lambda { Math.log2("test") }.should raise_error(ArgumentError)
end
it "raises a TypeError if the argument is nil" do
lambda { Math.log2(nil) }.should raise_error(TypeError)
end
it "accepts any argument that can be coerced with Float()" do
Math.log2(MathSpecs::Float.new).should be_close(0.0, TOLERANCE)
end
end
end
ruby_version_is "1.9" do
describe "Math.log2" do
it "needs to be reviewed for spec completeness"
end
end
Version data entries
64 entries across 64 versions & 1 rubygems