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Diffstat (limited to 'spec/ruby/core/integer/sqrt_spec.rb')
-rw-r--r-- | spec/ruby/core/integer/sqrt_spec.rb | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/spec/ruby/core/integer/sqrt_spec.rb b/spec/ruby/core/integer/sqrt_spec.rb new file mode 100644 index 0000000000..b7d9ef441b --- /dev/null +++ b/spec/ruby/core/integer/sqrt_spec.rb @@ -0,0 +1,33 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +ruby_version_is "2.5" do + describe "Integer.sqrt" do + it "returns an integer" do + Integer.sqrt(10).should be_kind_of(Integer) + end + + it "returns the integer square root of the argument" do + Integer.sqrt(0).should == 0 + Integer.sqrt(1).should == 1 + Integer.sqrt(24).should == 4 + Integer.sqrt(25).should == 5 + Integer.sqrt(10**400).should == 10**200 + end + + it "raises a Math::DomainError if the argument is negative" do + lambda { Integer.sqrt(-4) }.should raise_error(Math::DomainError) + end + + it "accepts any argument that can be coerced to Integer" do + Integer.sqrt(10.0).should == 3 + end + + it "converts the argument with #to_int" do + Integer.sqrt(mock_int(10)).should == 3 + end + + it "raises a TypeError if the argument cannot be coerced to Integer" do + lambda { Integer.sqrt("test") }.should raise_error(TypeError) + end + end +end |