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-rw-r--r--spec/ruby/core/complex/abs2_spec.rb9
1 files changed, 9 insertions, 0 deletions
diff --git a/spec/ruby/core/complex/abs2_spec.rb b/spec/ruby/core/complex/abs2_spec.rb
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+++ b/spec/ruby/core/complex/abs2_spec.rb
@@ -0,0 +1,9 @@
+require_relative '../../spec_helper'
+
+describe "Complex#abs2" do
+ it "returns the sum of the squares of the real and imaginary parts" do
+ Complex(1, -2).abs2.should == 1 + 4
+ Complex(-0.1, 0.2).abs2.should be_close(0.01 + 0.04, TOLERANCE)
+ Complex(0).abs2.should == 0
+ end
+end