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-rw-r--r--spec/ruby/core/bignum/plus_spec.rb19
1 files changed, 19 insertions, 0 deletions
diff --git a/spec/ruby/core/bignum/plus_spec.rb b/spec/ruby/core/bignum/plus_spec.rb
new file mode 100644
index 0000000000..411e226649
--- /dev/null
+++ b/spec/ruby/core/bignum/plus_spec.rb
@@ -0,0 +1,19 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Bignum#+" do
+ before :each do
+ @bignum = bignum_value(76)
+ end
+
+ it "returns self plus the given Integer" do
+ (@bignum + 4).should == 9223372036854775888
+ (@bignum + 4.2).should be_close(9223372036854775888.2, TOLERANCE)
+ (@bignum + bignum_value(3)).should == 18446744073709551695
+ end
+
+ it "raises a TypeError when given a non-Integer" do
+ lambda { @bignum + mock('10') }.should raise_error(TypeError)
+ lambda { @bignum + "10" }.should raise_error(TypeError)
+ lambda { @bignum + :symbol}.should raise_error(TypeError)
+ end
+end