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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/core/math/log_spec.rb | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) |
Move spec/rubyspec to spec/ruby for consistency
* 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
Diffstat (limited to 'spec/ruby/core/math/log_spec.rb')
-rw-r--r-- | spec/ruby/core/math/log_spec.rb | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/spec/ruby/core/math/log_spec.rb b/spec/ruby/core/math/log_spec.rb new file mode 100644 index 0000000000..9bcccb55e2 --- /dev/null +++ b/spec/ruby/core/math/log_spec.rb @@ -0,0 +1,59 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +# The natural logarithm, having base Math::E +describe "Math.log" do + it "returns a float" do + Math.log(1).should be_kind_of(Float) + end + + it "returns the natural logarithm of the argument" do + Math.log(0.0001).should be_close(-9.21034037197618, TOLERANCE) + Math.log(0.000000000001e-15).should be_close(-62.1697975108392, TOLERANCE) + Math.log(1).should be_close(0.0, TOLERANCE) + Math.log(10).should be_close( 2.30258509299405, TOLERANCE) + Math.log(10e15).should be_close(36.8413614879047, TOLERANCE) + end + + conflicts_with :Complex do + it "raises an Errno::EDOM if the argument is less than 0" do + lambda { Math.log(-1e-15) }.should raise_error(Errno::EDOM) + end + end + + it "raises a TypeError if the argument cannot be coerced with Float()" do + lambda { Math.log("test") }.should raise_error(TypeError) + end + + it "raises a TypeError for numerical values passed as string" do + lambda { Math.log("10") }.should raise_error(TypeError) + end + + it "accepts a second argument for the base" do + Math.log(9, 3).should be_close(2, TOLERANCE) + Math.log(8, 1.4142135623730951).should be_close(6, TOLERANCE) + end + + it "raises a TypeError when the numerical base cannot be coerced to a float" do + lambda { Math.log(10, "2") }.should raise_error(TypeError) + lambda { Math.log(10, nil) }.should raise_error(TypeError) + end + + it "returns NaN given NaN" do + Math.log(nan_value).nan?.should be_true + end + + it "raises a TypeError if the argument is nil" do + lambda { Math.log(nil) }.should raise_error(TypeError) + end + + it "accepts any argument that can be coerced with Float()" do + Math.log(MathSpecs::Float.new).should be_close(0.0, TOLERANCE) + end +end + +describe "Math#log" do + it "is accessible as a private instance method" do + IncludesMath.new.send(:log, 5.21).should be_close(1.65057985576528, TOLERANCE) + end +end |