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Diffstat (limited to 'spec/ruby/core/fixnum/div_spec.rb')
-rw-r--r-- | spec/ruby/core/fixnum/div_spec.rb | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/core/fixnum/div_spec.rb b/spec/ruby/core/fixnum/div_spec.rb new file mode 100644 index 0000000000..be9b498508 --- /dev/null +++ b/spec/ruby/core/fixnum/div_spec.rb @@ -0,0 +1,44 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Fixnum#div with a Fixnum" do + it "returns self divided by the given argument as an Integer" do + 2.div(2).should == 1 + 1.div(2).should == 0 + 5.div(2).should == 2 + end +end + +describe "Fixnum#div" do + it "rounds towards -inf" do + 8192.div(10).should == 819 + 8192.div(-10).should == -820 + (-8192).div(10).should == -820 + (-8192).div(-10).should == 819 + end + + it "coerces self and the given argument to Floats and returns self divided by other as Fixnum" do + 1.div(0.2).should == 5 + 1.div(0.16).should == 6 + 1.div(0.169).should == 5 + -1.div(50.4).should == -1 + 1.div(bignum_value).should == 0 + end + + it "raises a ZeroDivisionError when the given argument is 0 and a Float" do + lambda { 0.div(0.0) }.should raise_error(ZeroDivisionError) + lambda { 10.div(0.0) }.should raise_error(ZeroDivisionError) + lambda { -10.div(0.0) }.should raise_error(ZeroDivisionError) + end + + it "raises a ZeroDivisionError when the given argument is 0" do + lambda { 13.div(0) }.should raise_error(ZeroDivisionError) + end + + it "raises a TypeError when given a non-Integer" do + lambda { + (obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10) + 13.div(obj) + }.should raise_error(TypeError) + lambda { 5.div("2") }.should raise_error(TypeError) + end +end |