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Contents
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
# The common logarithm, having base 10
describe "Math.log10" do
it "returns a float" do
Math.log10(1).should be_kind_of(Float)
end
it "return the base-10 logarithm of the argument" do
Math.log10(0.0001).should be_close(-4.0, TOLERANCE)
Math.log10(0.000000000001e-15).should be_close(-27.0, TOLERANCE)
Math.log10(1).should be_close(0.0, TOLERANCE)
Math.log10(10).should be_close(1.0, TOLERANCE)
Math.log10(10e15).should be_close(16.0, TOLERANCE)
end
conflicts_with :Complex do
it "raises an Errno::EDOM if the argument is less than 0" do
lambda { Math.log10(-1e-15) }.should raise_error( Errno::EDOM)
end
end
ruby_version_is ""..."1.9" do
it "raises an ArgumentError if the argument cannot be coerced with Float()" do
lambda { Math.log10("test") }.should raise_error(ArgumentError)
end
end
ruby_version_is "1.9" do
it "raises a TypeError if the argument cannot be coerced with Float()" do
lambda { Math.log10("test") }.should raise_error(TypeError)
end
end
it "raises a TypeError if the argument is nil" do
lambda { Math.log10(nil) }.should raise_error(TypeError)
end
it "accepts any argument that can be coerced with Float()" do
Math.log10(MathSpecs::Float.new).should be_close(0.0, TOLERANCE)
end
end
describe "Math#log10" do
it "is accessible as a private instance method" do
IncludesMath.new.send(:log10, 4.15).should be_close(0.618048096712093, TOLERANCE)
end
end
Version data entries
52 entries across 52 versions & 2 rubygems