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-rw-r--r--spec/ruby/core/bignum/complement_spec.rb9
1 files changed, 9 insertions, 0 deletions
diff --git a/spec/ruby/core/bignum/complement_spec.rb b/spec/ruby/core/bignum/complement_spec.rb
new file mode 100644
index 0000000000..be6bc21b19
--- /dev/null
+++ b/spec/ruby/core/bignum/complement_spec.rb
@@ -0,0 +1,9 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Bignum#~" do
+ it "returns self with each bit flipped" do
+ (~bignum_value(48)).should == -9223372036854775857
+ (~(-bignum_value(21))).should == 9223372036854775828
+ (~bignum_value(1)).should == -9223372036854775810
+ end
+end